JP5893843B2 - Touch panel - Google Patents

Description

  The present invention relates to a touch panel, and more particularly to a five-wire resistive touch panel.

  As the touch panel, a resistive film system having a simple structure and a simple control system is generally used, and 4-wire, 5-wire, 8-wire, etc. touch panels have been proposed. In the 5-wire resistive touch panel (see FIG. 1), since the conductive film provided on the upper substrate disposed on the operation surface side is only for potential reading, in a 4-wire or 8-wire touch panel There is no problematic edge sliding. Therefore, the 5-wire resistive film type touch panel is used in a severe use environment or an environment where a long durability is desired.

  FIG. 1 is an exploded perspective view of a conventional touch panel. In FIG. 1, a five-wire resistive touch panel is taken as an example of the touch panel 300. In FIG. 1, it is difficult to show a plurality of grooves 316 shown in FIG.

  Referring to FIG. 1, a conventional touch panel 300 includes a lower substrate 301, an upper substrate 302, a spacer 303, and a flexible wiring substrate 304.

  FIG. 2 is an enlarged plan view of the lower substrate shown in FIG. 2, the same components as those of the lower substrate 301 shown in FIG. 2 indicates an operation area (hereinafter referred to as “operation area P”).

  Referring to FIGS. 1 and 2, the lower substrate 301 has a glass substrate 311, a transparent resistance film 312, an electrode 315, and a plurality of grooves 316. The transparent resistance film 312 is formed on the upper surface 311A of the glass substrate 311.

  The electrode 315 has a frame shape and includes electrode patterns 321 to 324 and power feeding units 326 to 329.

  The electrode patterns 331 and 322 are patterns extending in the X and X directions. The electrode patterns 331 and 322 are formed on the upper surface 312 </ b> A of the transparent resistance film 312 in a portion located on the outer periphery of the glass substrate 311. The electrode patterns 331 and 322 are arranged to face each other.

  The electrode patterns 323 and 324 are patterns extending in the Y and Y directions. The electrode patterns 323 and 324 are formed on the upper surface 312 </ b> A of the transparent resistance film 312 in a portion located on the outer periphery of the glass substrate 311. The electrode patterns 323 and 324 are arranged to face each other.

  The power feeding units 326 to 329 are provided on the upper surface 312 </ b> A of the transparent resistance film 312 at a portion arranged at the corner of the glass substrate 311. The power feeding unit 326 is configured integrally with one end of the electrode patterns 321 and 323. The power feeding unit 327 is configured integrally with one end of the electrode patterns 322 and 324. The power feeding unit 328 is configured integrally with the other ends of the electrode patterns 321 and 324. The power feeding unit 329 is configured integrally with the other end of the electrode patterns 322 and 323. The electrode 315 configured as described above is formed by, for example, a printing method.

  The plurality of grooves 316 are formed so as to penetrate the transparent resistance film 312 at a portion corresponding to the formation region of the electrode patterns 321 to 324. The plurality of grooves 316 are U-shaped grooves. The plurality of grooves 316 are shaped such that the contact area between the transparent resistance film 312 and the electrode patterns 321 to 324 increases at the center of the electrode patterns 321 to 324 and decreases at the ends of the electrode patterns 321 to 324. ing.

  By providing such a plurality of grooves 316, it is possible to reduce the distortion (not shown) of the potential distribution formed at the corners of the operation region P that is square in plan view.

  The upper substrate 302 has a film substrate 335, a transparent resistance film 336, and a coordinate detection electrode 337. The transparent resistance film 336 is provided on the lower surface 335 </ b> A of the film substrate 335 facing the spacer 303. The coordinate detection electrode 337 is provided on the lower surface of the transparent resistance film 336.

  The spacer 303 has a frame shape. The spacer 303 is disposed between the lower substrate 301 and the upper substrate 302 and bonded to the lower substrate 301 and the upper substrate 302. The spacer 303 is a member for keeping a gap between the lower substrate 301 and the upper substrate 302 at a predetermined interval.

  In the touch panel 300 having the above configuration, the potential distribution extending in the X and X directions and the potential distribution extending in the Y and Y directions are alternately changed by changing the voltage applied to the power feeding units 326 to 329. (For example, refer to Patent Document 1).

JP 2007-25904 A

  FIG. 3 is a diagram for explaining problems of the conventional touch panel. FIG. 3 schematically shows an example of a potential distribution 332 formed in the transparent resistance film 312 when a voltage of 0 V is applied to the power feeding units 326 and 328 and a voltage of 5 V is applied to the power feeding units 327 and 329. In FIG. 3, the same components as those of the lower substrate 301 shown in FIG. Further, Q shown in FIG. 3 indicates a region where the potential distribution 332 is distorted in the operation region P (hereinafter referred to as “distortion generation region Q”).

  FIG. 4 is a diagram for explaining another problem of the conventional touch panel. 4 schematically illustrates an example of potential distributions 335 and 336 formed in the transparent resistance film 312 when a voltage of 0 V is applied to the power feeding units 327 and 328 and a voltage of 5 V is applied to the power feeding units 326 and 329. Show. The potential distribution 335 indicates a potential distribution formed outside the operation region P, and the potential distribution 336 indicates a potential distribution formed in the operation region P. In FIG. 4, the same components as those of the structure shown in FIG.

  As shown in FIG. 3, in the conventional touch panel 300, when a defect occurs during manufacturing of the touch panel 300 (specifically, for example, the thickness of the electrode 315 is not uniform or the film quality of the transparent resistance film 312 is abnormal). There is a problem in that the distortion of the potential distribution 332 (potential distribution formed by potential lines extending in the X and X directions) due to the above-described defect cannot be eliminated.

  The above problem also occurs when a potential distribution (not shown) constituted by potential lines extending in the Y and Y directions is formed on the transparent resistance film 312.

  Further, as shown in FIG. 4, in the conventional touch panel 300, both ends of the potential distribution 336 formed slightly inside the corner of the operation region P are curved in a direction toward the center of the electrode patterns 321 and 322. There is a problem that the potential distribution 336 is distorted.

  Note that the above problem also occurs when a potential distribution (not shown) constituted by potential lines extending in the X and X directions is generated.

  Therefore, the present invention has been made in view of the above points, and an object of the present invention is to provide a touch panel that can eliminate potential distribution distortion and perform accurate position detection.

According to one aspect of the present invention, a rectangular first transparent substrate body,
A first transparent resistance film formed on an upper surface of the first transparent substrate body and having an operation region;
The electrode pattern disposed on the top surface of the first transparent resistance film so as to correspond to the four sides of the first transparent substrate body, and the portions corresponding to the four corners of the first transparent substrate. An electrode having a power feeding portion disposed on the upper surface of the first transparent resistance film and configured integrally with the electrode pattern;
It is formed in a U-shape that penetrates through the first transparent resistance film in a portion corresponding to the electrode pattern formation region, contacts the end side of the first transparent substrate body in a plan view, and faces outward. A plurality of grooves configured to increase the contact area between the electrode pattern and the first transparent resistance film from the center of the electrode pattern toward the end of the electrode pattern;
A first substrate having:
A second transparent substrate body disposed so as to face the first transparent resistance film via a spacer, and formed on a lower surface of the second transparent substrate body, facing the first transparent resistance film. A second transparent resistance film, a coordinate detection electrode formed on the lower surface of the second transparent resistance film,
A second substrate having:
With
When a voltage is applied to the power feeding unit, the touch panel detects the coordinates of the contact position by detecting the potential of the contact position based on the potential distribution formed in the first transparent resistance film,
A plurality of first transparent films extending through the first transparent resistance film in a portion located between the groove portions and extending in a direction orthogonal to the arrangement direction of the plurality of groove portions. Provided a groove,
Said first transparent resistive film portion located between the electrode pattern of the portion facing the potential distribution distortion generation region and the potential distribution distortion generation region, as well as through the first transparent resistive film, the a second groove extending in a direction perpendicular to the first groove, the second groove, connecting a plurality of the first grooves to each other, or the plurality of the first grooves groove A touch panel characterized by connecting the two is provided.

  According to the present invention, a plurality of first transparent resistance films located between the groove portions penetrate through the first transparent resistance film and extend in a direction orthogonal to the arrangement direction of the plurality of groove portions. When the first groove is provided and distortion occurs in the potential distribution in the operation region, the first portion of the portion located between the strain generation region where the distortion of the potential distribution has occurred and the portion of the electrode pattern facing the strain generation region. One transparent resistance film is provided with a second groove penetrating the first transparent resistance film and extending in a direction orthogonal to the first groove, and the plurality of first grooves are connected by the second groove. By doing so, it becomes difficult to apply a potential to the potential line from the electrode pattern of the portion facing the second groove, so that the curved potential line can be made substantially straight. As a result, it is possible to eliminate the distortion of the potential distribution caused by the trouble that occurs during the manufacture of the touch panel, and thus accurate position detection can be performed.

According to another aspect of the present invention, a rectangular first transparent substrate body,
A first transparent resistance film formed on an upper surface of the first transparent substrate body and having an operation region;
The electrode pattern disposed on the top surface of the first transparent resistance film so as to correspond to the four sides of the first transparent substrate body, and the portions corresponding to the four corners of the first transparent substrate. An electrode having a power feeding portion disposed on the upper surface of the first transparent resistance film and configured integrally with the electrode pattern;
The electrode pattern is formed so as to penetrate through the first transparent resistance film at a portion corresponding to the electrode pattern formation region, and the electrode pattern and the first pattern are moved from the center of the electrode pattern toward the end of the electrode pattern. A plurality of grooves configured to increase the contact area with the transparent resistance film,
A first substrate having:
A second transparent substrate body disposed so as to face the first transparent resistance film via a spacer, and formed on a lower surface of the second transparent substrate body, facing the first transparent resistance film. A second transparent resistance film, and a coordinate detection electrode formed on the lower surface of the second transparent resistance film;
A second substrate having:
With
When a voltage is applied to the power feeding unit, the touch panel detects the coordinates of the contact position by detecting the potential of the contact position based on the potential distribution formed in the first transparent resistance film,
When the potential distribution is distorted in the operation region, the resistance value of the electrode pattern of the portion facing the strain generating region where the potential distribution strain is generated is set to the resistance value of the portion not facing the strain generating region. A touch panel characterized by having a resistance value higher than that of the electrode pattern is provided.

  According to the present invention, when the potential distribution is distorted in the operation region, the resistance value of the electrode pattern of the portion facing the strain generating region where the potential distribution is distorted is set to the portion not facing the strain generating region. By making the resistance value higher than the resistance value of the electrode pattern, it becomes difficult to apply a potential to the potential line constituting the potential distribution from the electrode pattern of the portion having the higher resistance value, so that the end of the potential line constituting the potential distribution is expanded. It is possible to set (potential distribution distortion) so that the intervals between the ends of the potential lines are substantially equal. As a result, it is possible to eliminate the distortion of the potential distribution caused by the malfunction during the manufacture of the touch panel, so that accurate position detection can be performed.

According to another aspect of the present invention, a rectangular first transparent substrate body,
A first transparent resistance film formed on an upper surface of the first transparent substrate body and having an operation region;
The electrode pattern disposed on the top surface of the first transparent resistance film so as to correspond to the four sides of the first transparent substrate body, and the portions corresponding to the four corners of the first transparent substrate. An electrode having a power feeding portion disposed on the upper surface of the first transparent resistance film and configured integrally with the electrode pattern;
The electrode pattern is formed so as to penetrate through the first transparent resistance film at a portion corresponding to the electrode pattern formation region, and the electrode pattern and the first pattern are moved from the center of the electrode pattern toward the end of the electrode pattern. A plurality of grooves configured to increase the contact area with the transparent resistance film,
A first substrate having:
A second transparent substrate body disposed so as to face the first transparent resistance film via a spacer, and formed on a lower surface of the second transparent substrate body, facing the first transparent resistance film. A second transparent resistance film, and a coordinate detection electrode formed on the lower surface of the second transparent resistance film;
A second substrate having:
With
When a voltage is applied to the power feeding unit, the touch panel detects the coordinates of the contact position by detecting the potential of the contact position based on the potential distribution formed in the first transparent resistance film,
The electrode pattern is provided with a plurality of through portions arranged in the extending direction of the electrode pattern and penetrating the electrode pattern,
When distortion occurs in the potential distribution in the operation region, the through-hole formed in the electrode pattern in a portion facing the strain generation region where the distortion of the potential distribution occurs is filled with a conductive paste. Is provided.

  According to the present invention, when the electrode pattern is provided with a plurality of through portions that are arranged in the extending direction of the electrode pattern and penetrate the electrode pattern, and the potential distribution is distorted in the operation region, the potential distribution is distorted. Fill the penetration part formed in the electrode pattern of the part facing the generated strain generation region with the conductive paste, the resistance value of the electrode pattern of the part filled with the conductive paste, and the conductive paste in the penetration part By making the resistance value lower than the resistance value of the electrode pattern in the portion not filled with, it becomes easier to apply a potential from the electrode pattern in the lower resistance portion to the potential line constituting the potential distribution. It is possible to widen the convergence of the ends of the lines (distortion of the potential distribution) so that the intervals between the ends of the potential lines are substantially equal. As a result, it is possible to eliminate the distortion of the potential distribution caused by the malfunction during the manufacture of the touch panel, so that accurate position detection can be performed.

  According to the present invention, it is possible to eliminate the distortion of the potential distribution and perform accurate position detection.

It is the perspective view which decomposed | disassembled the conventional touch panel. It is the top view to which the lower board | substrate shown in FIG. 1 was expanded. It is a figure for demonstrating the problem of the conventional touch panel. It is a figure for demonstrating the other problem of the conventional touch panel. 1 is a perspective view showing a schematic configuration of a touch panel according to a first embodiment of the present invention. It is a top view of the 1st board | substrate shown in FIG. It is sectional drawing of the BB line direction of the 1st board | substrate shown in FIG. It is a figure which shows typically an example of the distortion of the electric potential distribution of the touchscreen in which the 2nd groove | channel is not formed. It is a perspective view which shows schematic structure of the touchscreen which concerns on the 2nd Embodiment of this invention. FIG. 10 is a plan view of the first substrate shown in FIG. 9. It is a figure which shows typically an example of the distortion of the electric potential distribution of the touchscreen provided with the electrode in which the cutting part is not formed. It is a perspective view which shows schematic structure of the touchscreen which concerns on the 3rd Embodiment of this invention. It is a top view of the 1st board | substrate shown in FIG. It is a figure which shows typically an example of the distortion of the electric potential distribution of the touchscreen provided with the electrode by which the electroconductive paste is not filled in the penetration part. It is a perspective view which shows schematic structure of the touchscreen which concerns on the 4th Embodiment of this invention. FIG. 16 is a plan view of the first substrate shown in FIG. 15. It is a figure which shows typically an example of the electric potential distribution which consists of the electric potential line of the Y and Y direction formed with the touch panel of this Embodiment. It is a perspective view which shows schematic structure of the touchscreen which concerns on the 5th Embodiment of this invention. It is a top view of the 1st board | substrate shown in FIG. FIG. 20 is a cross-sectional view of the first substrate shown in FIG. 19 in the II line direction. It is a perspective view which shows schematic structure of the touchscreen which concerns on the 6th Embodiment of this invention. It is a top view of the 1st board | substrate shown in FIG. It is sectional drawing of the JJ line direction of the 1st board | substrate shown in FIG. It is a perspective view which shows schematic structure of the touchscreen which concerns on the 7th Embodiment of this invention. FIG. 25 is a plan view of the first substrate shown in FIG. 24. It is sectional drawing of the KK line direction of the 1st board | substrate shown in FIG. It is sectional drawing of the other 1st board | substrate applicable to the touchscreen of this Embodiment. It is a perspective view which shows schematic structure of the touchscreen which concerns on the 8th Embodiment of this invention. FIG. 29 is a plan view of the first substrate shown in FIG. 28.

  Next, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 5 is a perspective view showing a schematic configuration of the touch panel according to the first embodiment of the present invention. In FIG. 5, the X and X directions indicate the longitudinal directions of the first and second substrates 11 and 12, and the Y and Y directions indicate the directions orthogonal to the X and X directions. Further, in FIG. 5, it is difficult to illustrate the plurality of groove portions 23, the first grooves 24, and the second grooves 27 to 29 illustrated in FIG. 6, which will be described later, and accordingly, the plurality of groove portions 23 and the first grooves 24. The illustration of the second grooves 27 to 29 is omitted.

  Referring to FIG. 5, the touch panel 10 according to the first embodiment includes a first substrate 11, a second substrate 12, a spacer 13, and an FCP (flexible substrate) 15.

  6 is a plan view of the first substrate shown in FIG. 5, and FIG. 7 is a cross-sectional view of the first substrate shown in FIG. 6 in the BB line direction. In FIG. 6, A indicates an area where the touch panel 10 is operated (pressed) (hereinafter referred to as “operation area A”).

5 to 7, the first substrate 11 is a lower substrate, and includes a first transparent substrate body 21, a first transparent resistance film 22, a plurality of grooves 23, and a first groove. 24, the electrode 25, and the 1st transparent substrate main body 21 which has the 2nd groove | channels 27-29 are made into the rectangle by which the X and X directions were made into the longitudinal direction. The first transparent substrate main body 21 extends in the X and X directions and is opposed to the sides 31 and 32, the sides 33 and 34 are extended in the Y and Y directions and are opposed to each other, and the corners 36. ~ 39. The corner 36 is composed of two sides 32 and 33 that are orthogonal to each other. The corner 37 is composed of two sides 31 and 34 that are orthogonal to each other. The corner portion 38 is composed of two sides 32 and 34 that are orthogonal to each other. The corner 39 is composed of two sides 31 and 33 that are orthogonal to each other. As the first transparent substrate body 21, for example, a glass substrate can be used.

The first transparent resistance film 22 is provided on the upper surface 21 </ b> A of the first transparent substrate body 21. The first transparent resistance film 22 is a film in which a potential distribution is formed. The first transparent resistance film 22 has an operation area A. As the material of the first transparent resistance film 22, for example, a material in which Al or Ga is added to ITO (Indinm Tin Oxide), ZnO (zinc oxide), or a material in which Sb or the like is added to SnO ₂ is used. it can.

  The plurality of groove portions 23 are formed in the first transparent resistance film 22 at a portion located outside the operation region A. In the plurality of groove portions 23, electrode patterns 41 to 44, which will be described later, constituting the electrode 25 are formed. The plurality of groove portions 23 penetrate the first transparent resistance film 22.

  The plurality of groove portions 23 are configured such that the contact area between the electrode patterns 41 to 44 and the first transparent resistance film 22 increases from the center portion of the electrode patterns 41 to 44 toward the end portions of the electrode patterns 41 to 44. It is said that. The shape of the plurality of grooves 23 can be, for example, a U-shape. The plurality of groove portions 23 can be formed by, for example, laser processing.

  By forming the plurality of groove portions 23 having the above-described configuration in the first transparent resistance film 22, problems that occur during the manufacture of the touch panel 10 (specifically, for example, the thickness of the electrode 25 is not uniform or the first In the case where there is no abnormality in the film quality of the transparent resistance film 22), the overall distortion of the potential distribution formed in the operation region A can be improved.

  A plurality of the first grooves 24 are formed in the first transparent resistance film 22 in a portion located between the groove portions 23. The first groove 24 is a groove extending in a direction orthogonal to the arrangement direction of the plurality of groove portions 23. The first groove 24 is a groove that penetrates the first transparent resistance film 22 and exposes the upper surface 21 </ b> A of the first transparent substrate body 21. The width of the first groove 24 can be set to 0.1 mm, for example. The first groove 24 can be formed by, for example, laser processing.

  In this manner, the first groove 24 can be easily formed by forming the first groove 24 using laser processing.

  FIG. 8 is a diagram schematically illustrating an example of the distortion of the potential distribution of the touch panel in which the second groove is not formed. In FIG. 8, when a voltage of 0 V is applied to the power feeding units 46 and 48 of the first substrate 11-1 in which the second grooves 27 to 29 are not formed, and a voltage of 5 V is applied to the power feeding units 47 and 49. 5 schematically shows an example of the potential distribution 52 (potential distribution formed by potential lines extending in the X and X directions) formed in the first transparent resistance film 22. In FIG. 8, the same components as those of the first substrate 11 shown in FIG.

  Note that, at the stage where the initial inspection of the potential distribution of the touch panel 10 is performed, the first substrate 11 has the same configuration as the first substrate 11-1 shown in FIG. In other words, the second grooves 27 to 29 are not formed in the first substrate 11 at the stage of performing the first measurement of the potential distribution of the touch panel 10.

Here, before describing the second groove 28, an example of the potential distribution 52 formed on the first substrate 11-1 that does not include the second grooves 27 to 29 will be described with reference to FIG. 8. To do. The potential distribution 52 has strain generation regions C ₁ and C ₂ that are regions where the distortion of the potential distribution 52 is generated. The strain generation region C ₁ faces the center portion of the electrode pattern 41. Potential line located distortion generation area C ₁ is protruded electrode pattern 41 side.

The strain generation region C < _b > ₂ faces the center portion of the electrode pattern 42. Potential line located distortion generation area C ₂ is projected on the electrode pattern 42 side.

As described above, when the potential distribution 52 has the strain generation regions C ₁ and C ₂ , accurate position detection cannot be performed using the touch panel 10, so that it is necessary to eliminate the distortion of the potential distribution 52.

  In FIG. 8, the case where the distortion of the potential distribution 52 configured by the potential lines extending in the X and X directions is described as an example, but in reality, the power supply units 46 and 49 have a voltage of 5V. Measurement of distortion of potential distribution (not shown) constituted by potential lines (not shown) extending in the Y and Y directions by applying a voltage and applying a voltage of 0 V to the power feeding units 47 and 48. Also do.

Strain generation regions D ₁ and D ₂ shown in FIG. 8 indicate distortion of a potential distribution (not shown) constituted by potential lines (not shown) extending in the Y and Y directions. Although not shown in the distortion generation region D _1, the potential line such as to protrude in the central portion of the electrode pattern 43 is formed. Although not shown in the distortion generation region D _2, potential line such as to protrude in the central portion of the electrode pattern 44 is formed.

The strain generation regions C ₁ , C ₂ , D ₁ , and D ₂ are troubles that occur during the manufacture of the touch panel 10 (specifically, for example, variations in the thickness of the electrode 25 or abnormal film quality of the first transparent resistance film 22). Etc.).

  Further, when forming a potential distribution 52 made up of potential lines extending in the X and X directions and a potential distribution (not shown) made up of potential lines extending in the Y and Y directions, they are applied to the power supply units 46 to 49. The voltage to be applied is not limited to 0V and 5V.

  Next, the electrode 25 will be described with reference to FIG. The electrode 25 has a frame shape, and is provided on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located outside the operation region A. The electrode 25 includes electrode patterns 41 to 44 and power supply units 46 to 49.

  The electrode pattern 41 is a pattern extending in the X and X directions, and is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located near the side 32 of the first transparent substrate body 21.

  The electrode pattern 42 is a pattern extending in the X and X directions, and is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located near the side 31 of the first transparent substrate body 21. The electrode pattern 42 is a pattern facing the electrode pattern 41.

  The electrode pattern 43 is a pattern extending in the Y and Y directions, and is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located in the vicinity of the side 33 of the first transparent substrate body 21.

  The electrode pattern 44 is a pattern extending in the Y and Y directions, and is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located in the vicinity of the side 34 of the first transparent substrate body 21. The electrode pattern 44 is a pattern facing the electrode pattern 43.

  The power feeding unit 46 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 at a portion formed at the corner 36 of the first transparent substrate body 21. The power feeding unit 46 is configured integrally with one end of the electrode patterns 41 and 43. As a result, the power feeding unit 46 is electrically connected to the electrode patterns 41 and 43.

  The power feeding unit 47 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 at a portion formed at the corner 37 of the first transparent substrate body 21. The power feeding unit 47 is configured integrally with one end of the electrode patterns 42 and 44. As a result, the power feeding section 47 is electrically connected to the electrode patterns 42 and 44.

  The power feeding unit 48 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 at the portion formed at the corner 38 of the first transparent substrate body 21. The power feeding unit 48 is configured integrally with the other end of the electrode patterns 41 and 44. As a result, the power feeding unit 48 is electrically connected to the electrode patterns 41 and 44.

  The power feeding portion 49 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 at a portion formed at the corner portion 39 of the first transparent substrate body 21. The power feeding portion 49 is configured integrally with the other end of the electrode patterns 42 and 43. As a result, the power feeding portion 49 is electrically connected to the electrode patterns 42 and 43.

  When the power feeding units 46 to 49 form a potential distribution 52 composed of potential lines extending in the X and X directions and a potential distribution (not shown) composed of potential lines extending in the Y and Y directions, Is a portion to which is applied. The thickness of the power feeding portions 46 to 49 is configured to be substantially equal to the thickness of the electrode patterns 41 to 44.

  The electrode 25 having the above-described configuration can be formed, for example, by applying a conductive paste by a printing method (for example, a screen printing method). Further, as the conductive paste used as the base material of the electrode 25, for example, a silver / carbon paste can be used.

The second grooves 27 and 28, the first transparent resistive film portion located between the distortion generation area _C 1, _{C 2} of the distortion generation area _C 1, _{C 2} and opposed portions of the electrode patterns 41 and 42 22 is formed. The second grooves 27 and 28 are grooves extending in a direction perpendicular to the first groove 24 and penetrate the first transparent resistance film 22. The second groove portion 27 is formed so as to connect a plurality of first grooves 24 formed between the two groove portions 23. The second groove portion 28 is disposed on both sides of the second groove 27. The second groove 28 is formed so as to connect the groove portion 23 and the plurality of first grooves 24. The width of the second grooves 27 and 28 can be set to 0.1 mm, for example.

Thus, the first transparent resistance film 22 of the portion located between the distortion generation area _C 1, _{C 2} and the counter electrode patterns 41 and 42 and the distortion generation area _C 1 of the part, _{C 2,} a plurality of The first groove 24 or the plurality of first grooves 24 and the groove portion 23 are connected to the first groove 24, and the second grooves 27 and 28 that are orthogonal to the first groove 24 are provided to face the second grooves 27 and 28. Since it is difficult to apply a potential to the potential line from the electrode patterns 41 and 42 at the portions to be curved, the curved potential line can be made substantially straight. As a result, it is possible to eliminate the distortion of the potential distribution 52 caused by a problem that occurs at the time of manufacturing the touch panel 10, so that accurate position detection can be performed.

The second groove 29 includes a strain generating region _D 1, _{D 2,} the first transparent resistive film portion located between the distortion generation region _D 1, _{D 2} and opposed portions of the electrode patterns 43, 44 22 Is formed. The second groove 29 is a groove extending in a direction orthogonal to the first groove 24 and penetrates the first transparent resistance film 22. The second groove 29 is formed so as to connect the groove portion 23 and the plurality of first grooves 24. The width of the second groove 29 can be set to 0.1 mm, for example.

Thus, the first transparent resistance film 22 of the portion located between the distortion generation region _D 1, _{D 2} and the electrode patterns 43, 44 and the distortion generation area _D 1 of the opposed portions, _{D 2,} a plurality of By providing a second groove 29 that is connected to the first groove 24 and the groove portion 23 and orthogonal to the first groove 24, a potential distribution (Y, It is possible to eliminate the distortion of the potential distribution formed by the potential lines extending in the Y direction, so that accurate position detection can be performed.

  The second grooves 27 to 29 described above may be formed by, for example, laser processing.

  Thus, by forming the second grooves 27 to 29 using laser processing, the second grooves 27 to 29 can be easily and accurately formed in the first transparent resistance film 22.

  Referring to FIG. 5, the second substrate 12 includes a second transparent substrate body 61, a second transparent resistance film 62, and a coordinate detection electrode 63. The second transparent substrate body 61 is a transparent film-like substrate and is rectangular. As a material of the second transparent substrate body 61, for example, PET (Polyethylene terephthalate), PC (Polycarbonate), and a resin material transparent in the visible region can be used.

  The second transparent resistance film 62 is provided on the lower surface 61 </ b> A of the second transparent substrate body 61 that faces the spacer 13. The coordinate detection electrode 63 is provided on the lower surface 62 </ b> A of the second transparent resistance film 62.

  The spacer 13 has a frame shape. The spacer 13 is disposed between the first substrate 11 and the second substrate 12, and the first substrate 11 and the second substrate 12 via a double-sided tape or an adhesive (both not shown). And is glued. The spacer 13 is a member for keeping a gap between the first substrate 11 and the second substrate 12 at a predetermined interval.

According to the touch panel of the present embodiment, the strain generation regions C ₁ and C _{2 of} the potential distribution 52 constituted by the potential lines extending in the X and X directions and the portions facing the strain generation regions C ₁ and C _2. A portion of the first transparent resistance film 22 located between the electrode patterns 41 and 42 is connected to the plurality of first grooves 24, or the plurality of first grooves 24 and the groove portions 23, and the first grooves Strain distribution regions D ₁ and D _{2 of} a potential distribution (not shown) formed by potential lines extending in the Y and Y directions and provided with second grooves 27 and 28 orthogonal to 24, and strain generation regions A portion of the first transparent resistance film 22 positioned between the electrode patterns 43 and 44 facing the portions D ₁ and D ₂ is connected to the plurality of first grooves 24 and the groove portions 23, and the first grooves 24, a potential line extending in the X and X directions is provided. It is possible to eliminate the distortion of the potential distribution 52 constituted by the above and the distortion of the potential distribution (not shown) constituted by the potential lines extending in the Y and Y directions, so that accurate position detection is performed. be able to.

(Second Embodiment)
FIG. 9 is a perspective view showing a schematic configuration of a touch panel according to the second embodiment of the present invention. In FIG. 9, the same components as those of the touch panel 10 of the first embodiment are denoted by the same reference numerals. In FIG. 9, since it is difficult to illustrate the plurality of groove portions 23, the illustration of the plurality of groove portions 23 is omitted.

  Referring to FIG. 9, the touch panel 65 according to the second embodiment is the same as the touch panel 10 according to the first embodiment except that a first substrate 66 is provided instead of the first substrate 11 provided in the touch panel 10. The touch panel 10 is configured in the same manner.

  FIG. 10 is a plan view of the first substrate shown in FIG. In FIG. 10, the same components as those of the first substrate 11 shown in FIG.

  Referring to FIG. 10, the first substrate 66 is provided with an electrode 68 instead of the electrode 25 provided on the first substrate 11 described in the first embodiment, and is provided on the first substrate 11. The configuration is the same as that of the first substrate 11 except that the first and second grooves 24 and 27 to 29 are removed from the constituent elements.

  FIG. 11 is a diagram schematically illustrating an example of the distortion of the potential distribution of the touch panel including an electrode in which a cutting portion is not formed. In FIG. 11, a voltage of 0 V is applied to the power feeding parts 46 and 48 of the electrode 68-1 before the cutting parts 77A, 77B, 82A and 82B described later are formed, and a voltage of 5 V is applied to the power feeding parts 47 and 49. A potential distribution 69 formed at this time is schematically shown. In FIG. 11, the same components as those of the first substrate 66 shown in FIG.

  Here, before describing the electrode 68 having the cutting portions 77A, 77B, 82A, and 82B shown in FIG. 10, the touch panel including the electrode 68-1 in which the cutting portions 77A, 77B, 82A, and 82B are not formed is provided. An example of the potential distribution 69 to be formed will be described.

Referring to FIG. 11, the potential distribution 69 has strain generation regions E ₁ and E ₂ that are regions where the distortion of the potential distribution 69 occurs. Distortion generation region E ₁ is opposed to the electrode pattern 71 located on the side feeding unit 49. End of the potential line located in the distortion generation region E ₁ is a widened shape.

Distortion generation region E ₂ is opposed to the electrode pattern 72 located to the feeding section 47 side. End of the potential lines located in the distortion generation region E in ₂ is the spread shape.

As described above, when the potential distribution 69 has the strain generation regions E ₁ and E ₂ , accurate position detection cannot be performed using the touch panel 65, and thus it is necessary to eliminate the distortion of the potential distribution 69.

  In FIG. 11, the case where the distortion of the potential distribution 69 configured by the potential lines extending in the X and X directions is described as an example. However, in reality, the power supply units 46 and 49 have a voltage of 5V. Measurement of distortion of potential distribution (not shown) constituted by potential lines (not shown) extending in the Y and Y directions by applying a voltage and applying a voltage of 0 V to the power feeding units 47 and 48. Also do.

Strain generation regions F ₁ and F ₂ shown in FIG. 11 show distortion of a potential distribution (not shown) constituted by potential lines (not shown) extending in the Y and Y directions. Although not shown in the drawing, potential lines extending in the Y and Y directions are formed in the strain generation regions F ₁ and F ₂ so that the ends thereof are widened.

The strain generation regions E ₁ , E ₂ , F ₁ , F ₂ are defects that occur during the manufacture of the touch panel 65 (specifically, for example, variations in the thickness of the electrode 25 or abnormal film quality of the first transparent resistance film 22). Etc.).

  Further, when forming a potential distribution 69 made up of potential lines extending in the X and X directions and a potential distribution (not shown) made up of potential lines extending in the Y and Y directions, they are applied to the power supply units 46 to 49. The voltage to be applied is not limited to 0V and 5V.

  Here, the electrode 68 will be described with reference to FIG. The electrode 68 has a frame shape, and is provided on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located outside the operation region A. The electrode 68 is configured in the same manner as the electrode 25 except that electrode patterns 71 to 74 are provided instead of the electrode patterns 41 to 44 provided on the electrode 25 described in the first embodiment.

  The electrode pattern 71 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 at a portion located in the vicinity of the side 33 of the first transparent substrate body 21. The electrode pattern 71 is shaped like a ladder. The electrode pattern 71 has a pair of wiring patterns 76 and 77 extending in the Y and Y directions, and a connecting portion 79. One end portion of the pair of wiring patterns 76 and 77 is configured integrally with the power feeding portion 46, and the other end portion of the pair of wiring patterns 76 and 77 is configured integrally with the power feeding portion 49. Yes.

  The wiring pattern 76 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located inside the region where the wiring pattern 77 is formed. The wiring pattern 77 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located outside the formation area of the wiring pattern 76. The wiring pattern 77 is electrically connected to the wiring pattern 76 via a plurality of connection portions 79.

The wiring pattern 77 has two cutting portions 77A and 77B. Wiring patterns 77 of the portion located between the cutting portions 77A and the cutting unit 77B is opposed to the distortion generation region E _1. The cutting portions 77A and 77B are for preventing a current from flowing through the wiring pattern 77 in a portion located between the cutting portions 77A and 77B. Thereby, it becomes possible to make the resistance value of the electrode pattern 71 of the part located between cutting part 77A, 77B higher than the resistance value of the electrode pattern 71 of another part.

Thus, the distortion generation region E ₁ and the facing portion of the cutting portion 77A to the wiring pattern 77, provided 77B, cutting unit 77A, by increasing the resistance of the portion of the electrode pattern 71 located between 77B, Since it is difficult for a potential to be applied to the potential lines constituting the potential distribution 69 from the portion of the electrode pattern 71 located between the cutting portions 77A and 77B, the end of the potential lines constituting the potential distribution 69 (potential distribution 69) is reduced. Can be corrected so that the intervals between the ends of the potential lines are substantially equal (see FIG. 10). As a result, it is possible to eliminate the distortion of the potential distribution 69 caused by a defect during manufacturing of the touch panel 65.

  The width of the wiring patterns 76 and 77 having the above configuration can be set to, for example, 0.5 mm to 1 mm. Further, the cutting portions 77A and 77B may be formed by laser processing, for example.

  As described above, the cutting portions 77A and 77B can be easily formed by narrowing the width of the wiring patterns 76 and 77 and cutting the wiring pattern 77 with a laser.

  The connection portion 79 is provided on the upper surface 22A of the first transparent resistance film 22 in a portion surrounded by the groove portions 23 arranged in the Y and Y directions. The connecting portion 79 is a pattern orthogonal to the pair of wiring patterns 76 and 77. One end of the connecting portion 79 is configured integrally with the wiring pattern 76, and the other end of the connecting portion 79 is configured integrally with the wiring pattern 77. As a result, the pair of wiring patterns 76 and 77 are electrically connected via the plurality of connecting portions 79.

The electrode pattern 72 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 at a portion located in the vicinity of the side 34 of the first transparent substrate body 21. The electrode pattern 72 has the same configuration as the electrode pattern 71. One end of the pair of wiring patterns 76 and 77 constituting the electrode pattern 72 is formed integrally with the power feeding unit 48, and the other end of the pair of wiring patterns 76 and 77 constituting the electrode pattern 72. Is configured integrally with the power feeding section 47. Cutting portion 77A provided on the electrode pattern 72, 77B are formed on the wiring pattern 77 of the distortion generation region E ₂ facing the portion.

The electrode pattern 72 having such a configuration can obtain the same effect as the electrode pattern 71 described above. Specifically, it is possible to eliminate the distortion of the potential distribution 69 in the portion corresponding to the strain generating area E _2.

  The electrode pattern 73 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 at a portion located in the vicinity of the side 32 of the first transparent substrate body 21. The electrode pattern 73 is shaped like a ladder. The electrode pattern 73 has a pair of wiring patterns 81 and 82 extending in the X and X directions, and a connection portion 84. One end of the pair of wiring patterns 81, 82 is configured integrally with the power feeding unit 46, and the other end of the pair of wiring patterns 81, 82 constituting the electrode pattern 73 is connected to the power feeding unit 48. It is constructed integrally.

  The wiring pattern 81 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located inside the formation region of the wiring pattern 82. The wiring pattern 82 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 at a portion located outside the region where the wiring pattern 81 is formed. The wiring pattern 82 is electrically connected to the wiring pattern 81 via a plurality of connection portions 84.

The wiring pattern 82 has two cutting portions 82A and 82B. Wiring patterns 82 of the portion located between the cutting portions 82A and the cutting unit 82B is opposed to the distortion generation area F _1. The cutting portions 82A and 82B are for preventing a current from flowing through the wiring pattern 82 located between the cutting portions 82A and 82B. Thereby, it becomes possible to make the resistance value of the electrode pattern 73 of the part located between cutting part 82A, 82B higher than the resistance value of the electrode pattern 73 of another part.

Thus, the distortion generation area F ₁ facing the portion of the wiring pattern 82 in the cutting unit 82A, 82B to be provided, the cutting unit 82A, by increasing the resistance of the portion of the electrode pattern 82 located between 82B, Since it becomes difficult to apply a potential to the potential lines extending in the Y and Y directions constituting the potential distribution (not shown) from the portion of the electrode pattern 73 located between the cutting portions 82A and 82B, the strain generation region F ₁ It is possible to eliminate the distortion of the potential distribution in the portion corresponding to.

  The width of the wiring patterns 81 and 82 configured as described above can be set to, for example, 0.5 mm to 1 mm. Further, the cutting portions 82A and 82B may be formed by laser processing, for example.

  As described above, the cutting portions 82A and 82B can be easily formed by narrowing the width of the wiring patterns 81 and 82 and cutting the wiring pattern 82 with a laser.

  The connection portion 84 is provided on the upper surface 22A of the first transparent resistance film 22 in a portion surrounded by the groove portions 23 arranged in the X and X directions. The connecting portion 84 is a pattern orthogonal to the pair of wiring patterns 81 and 82. One end of the connecting portion 84 is configured integrally with the wiring pattern 81, and the other end of the connecting portion 84 is configured integrally with the wiring pattern 82. As a result, the pair of wiring patterns 81 and 82 are electrically connected via the plurality of connecting portions 84.

The electrode pattern 74 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 at a portion located near the side 31 of the first transparent substrate body 21. The electrode pattern 74 has the same configuration as the electrode pattern 73. One end portion of the pair of wiring patterns 81 and 82 constituting the electrode pattern 74 is formed integrally with the power feeding portion 47, and the other end portion of the pair of wiring patterns 81 and 82 constituting the electrode pattern 74. Is configured integrally with the power feeding section 49. Cut portion 82A provided on the electrode pattern 74, 82B is opposed to the distortion generation area _{F 2.} The cutting portions 82A and 82B are for preventing a current from flowing through the wiring pattern 82 located between the cutting portions 82A and 82B. Thereby, it becomes possible to make the resistance value of the electrode pattern 73 of the part located between cutting part 82A, 82B higher than the resistance value of the electrode pattern 73 of another part.

The electrode pattern 74 having such a configuration can obtain the same effect as the electrode pattern 73 described above. Specifically, it is possible to solve Y, potential lines extending in the Y-direction distortion of the configured potential distribution (not shown) (distortion of the potential distribution of a portion corresponding to the distortion generation area F ₂₎ .

  As a material of the electrode 68 having the above-described configuration, a black conductive paste (for example, silver / carbon paste) may be used.

  As described above, by using a conductive paste made of black that easily absorbs laser as the material of the electrode 68, the processing time when forming the cut portions 77A, 77B, 82A, and 82B using laser processing is shortened. can do.

According to the touch panel of the present embodiment, distortion generation region _E 1, _{E 2} and cut portion 77A in the wiring pattern 77 of the opposing portions to form 77B, distortion generation region _E 1, _{E 2} and opposed portions The resistance values of the electrode patterns 71 and 72 are increased, and the cut portions 82A and 82B are formed in the wiring pattern 82 in the portion facing the strain generation regions F ₁ and F _{2 so as} to face the strain generation regions F ₁ and F _2. By increasing the resistance value of the electrode patterns 73 and 74 in the portions to be formed, the potential distribution 69 constituted by the potential lines extending in the X and X directions and the potential lines extending in the Y and Y directions are configured. Since it is possible to eliminate the distortion (not shown) of the potential distribution, accurate position detection can be performed.

  In the touch panel 65 according to the present embodiment, the cut portions 77A, 77B, 82A, and 82B are formed in the wiring patterns 77 and 82 arranged on the outer side among the wiring patterns 76, 77, 81, and 82 constituting the electrode 68. However, the cut portions 77A, 77B, 82A, and 82B may be formed not in the wiring patterns 77 and 82 arranged outside but in the wiring patterns 76 and 81 arranged inside. .

(Third embodiment)
FIG. 12 is a perspective view showing a schematic configuration of a touch panel according to the third embodiment of the present invention. In FIG. 12, the same components as those of the touch panel 10 of the first embodiment are denoted by the same reference numerals. In FIG. 12, since it is difficult to illustrate the plurality of groove portions 23, the illustration of the plurality of groove portions 23 is omitted.

  Referring to FIG. 12, the touch panel 90 according to the third embodiment is the same as the touch panel 10 according to the first embodiment except that a first substrate 91 is provided instead of the first substrate 11 provided in the touch panel 10. The touch panel 10 is configured in the same manner.

  FIG. 13 is a plan view of the first substrate shown in FIG. In FIG. 13, the same components as those of the first substrate 11 shown in FIG.

  Referring to FIG. 13, the first substrate 91 has a structure of the electrode 25 provided on the first substrate 11 described in the first embodiment, and further includes through portions 97 and 98 and a conductive paste 101, The first substrate 11 has the same configuration as that of the first substrate 11 except that the first and second grooves 24 and 27 to 29 provided on the first substrate 11 are excluded from the constituent elements. ing.

  FIG. 14 is a diagram schematically illustrating an example of the distortion of the potential distribution of the touch panel including the electrode in which the penetrating portion is not filled with the conductive paste. In FIG. 14, a voltage of 0 V is applied to the power feeding portions 46 and 48 of the electrode 93-1 before the through portions 97 and 98 are filled with the conductive paste 101 and 102, and a voltage of 5 V is applied to the power feeding portions 47 and 49. A potential distribution 95 formed in the first transparent resistance film 22 when applied is schematically shown. In FIG. 14, the same components as those of the first substrate 91 shown in FIG.

  Here, before explaining the electrode 93 shown in FIG. 13, an example of the potential distribution 95 formed on the touch panel provided with the electrode 93-1 before the through portions 97 and 98 are filled with the conductive pastes 101 and 102. Will be described.

Referring to FIG. 14, the potential distribution 95 is configured by potential lines extending in the X and X directions, and includes strain generation regions G ₁ and G ₂ that are regions where the strain of the potential distribution 95 is generated. The strain generation region G ₁ faces the central portion of the electrode pattern 43. The ends of the potential lines located in the strain generation region G ₁ are focused on the central portion of the electrode pattern 43.

The strain generation region G ₂ is opposed to the central portion of the electrode pattern 44. The ends of the potential lines located in the strain generation region G ₂ are focused on the central portion of the electrode pattern 44.

As described above, when the potential distribution 95 includes the strain generation regions G ₁ and G ₂ , accurate position detection cannot be performed using the touch panel 90, and thus it is necessary to eliminate the distortion of the potential distribution 95.

  In FIG. 14, the case where the distortion of the potential distribution 95 configured by the potential lines extending in the X and X directions is described as an example. However, in reality, the power supply units 46 and 49 have a voltage of 5V. Measurement of distortion of potential distribution (not shown) constituted by potential lines (not shown) extending in the Y and Y directions by applying a voltage and applying a voltage of 0 V to the power feeding units 47 and 48. Also do.

Strain generation regions H ₁ and H ₂ shown in FIG. 14 indicate distortion of a potential distribution (not shown) formed by potential lines extending in the Y and Y directions. Although not shown in the drawing, potential lines extending in the Y and Y directions are formed in the strain generation regions H ₁ and H ₂ so that the ends are converged.

The strain generation regions G ₁ , G ₂ , H ₁ , and H ₂ are defects that occur during the manufacture of the touch panel 90 (specifically, for example, variations in the thickness of the electrode 93 or abnormal film quality of the first transparent resistance film 22). Etc.).

  Further, when forming a potential distribution 95 composed of potential lines extending in the X and X directions and a potential distribution (not shown) composed of potential lines extending in the Y and Y directions, they are applied to the power supply units 46 to 49. The voltage to be applied is not limited to 0V and 5V.

  Here, the electrode 93 will be described with reference to FIGS. 13 and 14. The electrode 93 has a frame shape, and is provided on the upper surface 22 </ b> A of the first transparent resistance film 22 disposed outside the operation region A.

  The penetrating portion 97 is formed so as to penetrate the electrode patterns 43 and 44 of the portion facing the first transparent resistance film 22 surrounded by the groove portion 23. The penetrating part 97 exposes the upper surface 22A of the first transparent resistance film 22.

  The penetrating part 98 is formed so as to penetrate through the electrode patterns 41 and 42 in a portion facing the first transparent resistance film 22 surrounded by the groove part 23. The penetrating portion 98 exposes the upper surface 22A of the first transparent resistance film 22.

  The electrode patterns 41 to 44 in which the through portions 97 and 98 are formed can be formed by, for example, a printing method (for example, a screen printing method).

The conductive paste 101 is provided so as to fill a plurality of through-holes 97 disposed in portions facing the strain generation regions G ₁ and G ₂ . In the conductive paste 101, the resistance value of the electrode patterns 43 and 44 in the portion filled with the conductive paste 101 is made lower than the resistance value of the electrode patterns 43 and 44 in the portion not filled with the conductive paste 101. belongs to. As the conductive paste 101, for example, a silver / carbon paste can be used.

Thus, to form a plurality of through portions 97 to the wiring pattern 43 and 44, the through portion 97 disposed distortion generation area G _1, G ₂ opposing portions, the conductive filling the through portion 97 pastes 101 , And the resistance values of the wiring patterns 43 and 44 in the opposing portions of the strain generating areas G ₁ and G ₂ are made lower than the resistance values of the wiring patterns 43 and 44 in the other parts, so that the strain generating areas G ₁ , expanding the end portion of the potential lines corresponding to G _2, X, it is possible to eliminate the distortion of the potential distribution 95, which is constituted by the potential lines extending in the X direction.

The conductive paste 102 is provided so as to fill a plurality of penetrating portions 98 at portions facing the strain occurrence regions H ₁ and H ₂ . In the conductive paste 102, the resistance value of the electrode patterns 41 and 42 in the portion filled with the conductive paste 102 is made lower than the resistance value of the electrode patterns 41 and 42 in the portion not filled with the conductive paste 102. belongs to. As the conductive paste 102, for example, a silver / carbon paste can be used.

As described above, the conductive paste 102 is formed by forming the plurality of through-holes 98 in the wiring patterns 41 and 42 and filling the through-holes 98 in the through-holes 98 disposed in the portions facing the strain generation regions H ₁ and H _2. the provided is set lower than the resistance value of the strain generating area H _1, H ₂ and opposed portions of the other portions of the wiring patterns 41 and 42 the resistance value of the wiring patterns 41 and 42, the strain generating area H ₁ , H ₂ , the end of the potential line corresponding to H ₂ can be widened to eliminate the potential distribution distortion (not shown) formed by the potential lines extending in the Y and Y directions.

  The conductive pastes 101 and 102 can be formed by, for example, a printing method.

According to the touch panel of the present embodiment, the conductive paste that fills the plurality of through-holes 97 that penetrate the wiring patterns 43 and 44 and the through-holes 97 that are disposed in portions facing the strain generation regions G ₁ and G _2. 101, a plurality of penetrating portions 98 penetrating the wiring patterns 41 and 42, and a conductive paste 1021 filling the penetrating portions 98 disposed in portions facing the strain generating regions H ₁ and H ₂ are provided. By reducing the resistance values of the wiring patterns 43 and 44 in the portions facing the generation regions G ₁ and G ₂ and the resistance values of the wiring patterns 41 and 42 in the portions facing the strain generation regions H ₁ and H ₂ , X It is possible to eliminate the distortion of the potential distribution 95 constituted by the potential lines extending in the X and X directions and the distortion (not shown) of the potential distribution constituted by the potential lines extending in the Y and Y directions. So positive It can be performed Do position detection.

  In addition, the formation position of the penetration parts 97 and 98 is not limited to the formation position of the penetration parts 97 and 98 shown in FIG.13 and FIG.14. For example, the through portions 97 and 98 may be formed in the wiring patterns 41 to 44 in the portions arranged between the groove portions 23.

(Fourth embodiment)
FIG. 15 is a perspective view showing a schematic configuration of a touch panel according to the fourth embodiment of the present invention. In FIG. 15, the same components as those of the touch panel 10 of the first embodiment are denoted by the same reference numerals. In FIG. 15, it is difficult to illustrate the plurality of groove portions 23, and therefore the illustration of the plurality of groove portions 23 is omitted.

  Referring to FIG. 15, the touch panel 105 according to the fourth embodiment is the same as the touch panel 10 according to the first embodiment except that a first substrate 106 is provided instead of the first substrate 11 provided in the touch panel 10. The touch panel 10 is configured in the same manner.

  FIG. 16 is a plan view of the first substrate shown in FIG. In FIG. 16, the same components as those of the first substrate 11 shown in FIG. FIG. 17 is a diagram schematically illustrating an example of a potential distribution made up of potential lines in the Y and Y directions formed by the touch panel of the present embodiment. In FIG. 17, the potential distribution formed in the first transparent resistance film 22 when a voltage of 5 V is applied to the power feeding units 46 and 49 of the electrode 108 and a voltage of 0 V is applied to the power feeding units 47 and 48 is schematically shown. Is shown. In FIG. 17, the same components as those of the first substrate 106 shown in FIG.

  Referring to FIG. 16, the first substrate 106 is provided with an electrode 108 instead of the electrode 25 provided on the first substrate 11 described in the first embodiment, and on the first substrate 11. The structure is the same as that of the first substrate 11 except that the provided first and second grooves 24 and 27 to 29 are excluded from the constituent elements.

  The electrode 108 is configured in the same manner as the electrode 25 except that electrode patterns 111 to 114 are provided instead of the electrode patterns 41 to 44 provided on the electrode 25 described in the first embodiment. The electrode 108 is provided on the upper surface 22A of the portion of the first transparent resistance film 22 located outside the operation region A.

  The electrode pattern 111 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power supply unit 46 and the power supply unit 49. The electrode pattern 111 is a pattern extending in the X and X directions. One end 111 </ b> A of the electrode pattern 111 is shaped so that the width gradually decreases in the direction from the center of the electrode pattern 111 toward the power feeding unit 46. An end 111 </ b> A of the electrode pattern 111 is connected to the power supply unit 46. For example, the width of the end portion 111A of the electrode pattern 111 connected to the power supply unit 46 can be made half the width of the electrode pattern 111 of the portion located between the end portions 111A and 111B.

  The other end 111 </ b> B of the electrode pattern 111 is shaped so that the width gradually decreases in the direction from the center of the electrode pattern 111 toward the power feeding unit 48. An end 111 </ b> B of the electrode pattern 111 is connected to the power feeding unit 48. The width of the width end portion 111B of the portion of the electrode pattern 111 connected to the power supply portion 48 can be, for example, half the width of the portion of the electrode pattern 111 positioned between the end portions 111A and 111B.

  As described above, the widths of the both end portions 111A and 111B of the electrode pattern 111 extending in the X and X directions are reduced, and the end portions 111A of the electrode pattern 111 are moved from the center of the electrode pattern 111 toward the power feeding portions 46 and 48. , 111B by gradually increasing the resistance value, the upper ends of the potential lines extending in the Y and Y directions constituting the potential distribution 117 formed in the operation area A are made X, X, as shown in FIG. The distortion at the upper end of the potential distribution 117 can be eliminated by expanding in the X direction. In other words, the distortion at the upper end of the potential distribution 336 shown in FIG. 4 described above can be eliminated.

  The electrode pattern 112 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power feeding unit 47 and the power feeding unit 49. The electrode pattern 112 is a pattern extending in the X and X directions. The electrode pattern 112 has the same configuration as the electrode pattern 111. The electrode pattern 112 has an end 112A having a shape similar to that of the end 111A, and an end 112B having a shape similar to that of the end 111B. An end 112 </ b> A of the electrode pattern 112 is connected to the power feeding unit 47. An end portion 112 </ b> B of the electrode pattern 112 is connected to the power feeding portion 49.

  The electrode pattern 112 having the above configuration can obtain the same effect as the electrode pattern 111 described above. Specifically, the lower end portion of the potential line extending in the Y and Y directions constituting the potential distribution 117 arranged in the operation area A is expanded in the X and X directions to eliminate the distortion at the lower end of the potential distribution 117. can do.

  The electrode pattern 113 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power supply unit 46 and the power supply unit 49. The electrode pattern 113 is a pattern extending in the Y and Y directions. The electrode pattern 113 includes an end portion 113A having the same shape as the end portion 111A and an end portion 113B having the same shape as the end portion 111B. The electrode pattern 113 is similar to the electrode pattern 111 except that the length of the electrode pattern 113 located between the end portions 113A and 113B is shorter than the length of the electrode pattern 111 located between the end portions 111A and 111B. It is constituted similarly. An end portion 113 </ b> A of the electrode pattern 113 is connected to the power feeding portion 49. An end 113 </ b> B of the electrode pattern 113 is connected to the power feeding unit 46.

  The electrode pattern 114 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power feeding unit 47 and the power feeding unit 48. The electrode pattern 114 is a pattern extending in the Y and Y directions. The electrode pattern 114 has the same configuration as the electrode pattern 113. The electrode pattern 114 includes an end portion 114A having a shape similar to that of the end portion 113A, and an end portion 114B having a shape similar to that of the end portion 113B. An end portion 114 </ b> A of the electrode pattern 114 is connected to the power feeding unit 48. An end 114 </ b> B of the electrode pattern 114 is connected to the power feeding unit 47.

  As described above, the widths of both end portions 113A, 113B, 114A, and 114B of the electrode patterns 113 and 114 extending in the Y and Y directions are narrowed, and the electrode patterns 113 and 114 are moved away from the central portion. By gradually increasing the resistance values of the end portions 113A, 113B, 114A, and 114B of the electrode patterns 113 and 114, in the X and X directions constituting the potential distribution (not shown) formed in the operation region A, Both ends of an extended potential line (not shown) can be expanded in the Y and Y directions to eliminate potential distribution distortion.

  As the conductive material constituting the electrode patterns 111 to 114 having the above-described configuration, for example, a silver / carbon paste can be used.

  The resistance values of the electrode patterns 111 to 114 are preferably set within a range of 90Ω to 150Ω. When the resistance values of the electrode patterns 111 to 114 are smaller than 90Ω, the power consumption of the touch panel 105 is increased, and thus the time during which the touch panel 105 can be continuously used is shortened. Further, when the resistance values of the electrode patterns 111 to 114 are larger than 150Ω, the structure before the widths of both ends 111A, 111B, 112A, 112B, 113A, 113B, 114A, 114B of the electrode patterns 111 to 114 are narrowed 4 is deteriorated (in other words, the potential distribution 336 of the structure shown in FIG. 4 is deteriorated), so that both end portions 111A, 111B, 112A, 112B, 113A, 113B, The effect of narrowing the widths of 114A and 114B is halved.

  According to the touch panel of the present embodiment, the widths of the end portions 111A, 111B, 112A, 112B, 113A, 113B, 114A, and 114B of the electrode patterns 111 to 114 are narrowed and separated from the center of the electrode patterns 111 to 114. By gradually increasing the resistance value of both end portions 111A, 111B, 112A, 112B, 113A, 113B, 114A, 114B of the electrode patterns 111 to 114 with respect to the direction to be applied, the potential lines extend in the Y and Y directions. Since it is possible to eliminate the distortion of the configured potential distribution 117 and the distortion of the potential distribution (not shown) configured by the potential lines extending in the X and X directions, accurate position detection is performed. Can do.

(Fifth embodiment)
FIG. 18 is a perspective view showing a schematic configuration of a touch panel according to the fifth embodiment of the present invention. In FIG. 18, the same components as those of the touch panel 105 of the fourth embodiment are denoted by the same reference numerals. In FIG. 18, since it is difficult to illustrate the plurality of groove portions 23, the illustration of the plurality of groove portions 23 is omitted.

  Referring to FIG. 18, the touch panel 120 according to the fifth embodiment is the same as the touch panel 105 according to the fourth embodiment except that a first substrate 121 is provided instead of the first substrate 106 provided on the touch panel 105. The touch panel 105 is configured in the same manner.

  FIG. 19 is a plan view of the first substrate shown in FIG. 18, and FIG. 20 is a cross-sectional view of the first substrate shown in FIG. 19 and 20, the same components as those of the first substrate 106 shown in FIGS. 15 and 16 are denoted by the same reference numerals.

  Referring to FIGS. 19 and 20, the first substrate 121 is the same as the first substrate except that the electrode 123 is provided instead of the electrode 108 provided on the first substrate 105 described in the fourth embodiment. The substrate 106 has the same configuration.

  The electrode 123 is configured in the same manner as the electrode 108 except that electrode patterns 125 to 128 are provided instead of the electrode patterns 111 to 114 provided on the electrode 108 described in the fourth embodiment.

  The electrode pattern 125 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 at a portion located between the power supply unit 46 and the power supply unit 48. The electrode pattern 125 is a pattern extending in the X and X directions, and includes a first conductor pattern 131 and second conductor patterns 132 and 133.

  The first conductor pattern 131 is a pattern constituting the central portion of the electrode pattern 125. As the first conductive material constituting the first conductor pattern 131, for example, silver / carbon paste can be used.

  The second conductor pattern 132 is disposed between the first conductor pattern 131 and the power feeding unit 46. The second conductive pattern 132 has one end connected to the first conductor pattern 131 and the other end connected to the power feeding unit 46. Thereby, the second conductor pattern 132 electrically connects the power feeding section 46 and the first conductor pattern 131.

  The second conductor pattern 133 is disposed between the first conductor pattern 131 and the power feeding unit 48. The second conductive pattern 133 has one end connected to the first conductor pattern 131 and the other end connected to the power feeding unit 48. Thereby, the second conductor pattern 133 electrically connects the power feeding unit 48 and the first conductor pattern 131.

  The second conductor patterns 132 and 133 are made of a second conductive material having a higher resistance value than the first conductive material constituting the first conductor pattern 131. When a silver / carbon paste is used as the first conductive material, for example, a silver / carbon paste having a higher carbon concentration than the first conductive material can be used as the second conductive material.

  As described above, the second conductor pattern 132 made of the second conductive material having a higher resistance value than the first conductive material at both ends of the first conductive pattern 131 made of the first conductive material. , 133 can be set so that the resistance values at both ends of the electrode pattern 125 are higher than the resistance values of the electrode patterns 125 in other portions. Thereby, the electrode pattern 125 can obtain the same effect as the electrode pattern 111 described in the fourth embodiment. That is, a potential distribution (not shown) configured by potential lines extending in the Y and Y directions by expanding the upper end portion of a potential line (not shown) extending in the Y and Y directions in the X and X directions. It is possible to eliminate the distortion at the upper end of the.

  The electrode pattern 126 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power feeding unit 47 and the power feeding unit 49. The electrode pattern 126 is a pattern extending in the X and X directions, and has the same configuration as the electrode pattern 125. The second conductive pattern 132 constituting the electrode pattern 126 is connected to the power feeding unit 49. The second conductive pattern 133 constituting the electrode pattern 126 is connected to the power feeding unit 47.

  The electrode pattern 126 configured as described above has the same effect as the electrode pattern 125 described above. In other words, a potential distribution (not shown) constituted by potential lines extending in the Y and Y directions by expanding the lower end portion of the potential line (not shown) extending in the Y and Y directions in the X and X directions. ) Can be eliminated.

  The electrode pattern 127 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power supply unit 46 and the power supply unit 49. The electrode pattern 127 is a pattern extending in the Y and Y directions. The electrode pattern 127 includes second conductor patterns 132 and 133 provided on the electrode patterns 125 and 126, and a first conductor pattern 135. The second conductor pattern 132 constituting the electrode pattern 127 is connected to the power feeding unit 46. The second conductor pattern 133 constituting the electrode pattern 127 is connected to the power feeding unit 49.

  The first conductor pattern 135 is configured similarly to the first conductor pattern 131 except that the first conductor pattern 135 is shorter than the first conductor pattern 131 described above. The first conductor pattern 135 has one end connected to the second conductor pattern 132 and the other end connected to the second conductor pattern 133.

  The electrode pattern 127 configured as described above can obtain the same effect as the electrode pattern 113 described in the fourth embodiment. Specifically, one end portion of the potential line (not shown) extending in the X and X directions (the end portion of the potential line formed on the left side of the operation area A shown in FIG. 19) is set in the Y and Y directions. The distortion at one end of the potential distribution (not shown) constituted by the potential lines extending in the X and X directions can be eliminated.

  The electrode pattern 128 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power feeding unit 47 and the power feeding unit 48. The electrode pattern 128 is a pattern extending in the Y and Y directions. The electrode pattern 128 has the same configuration as the electrode pattern 127. The second conductor pattern 132 constituting the electrode pattern 128 is connected to the power feeding unit 48. The second conductor pattern 133 constituting the electrode pattern 128 is connected to the power feeding unit 47.

  The electrode pattern 128 configured as described above can obtain the same effect as the electrode pattern 114 described in the fourth embodiment. Specifically, the other end of the potential line (not shown) extending in the X and X directions (the end of the potential line formed on the right side of the operation area A shown in FIG. 19) is set in the Y and Y directions. The distortion at the other end of the potential distribution (not shown) formed by the potential lines extending in the X and X directions can be eliminated.

  The resistance value of each of the electrode patterns 125 to 128 configured as described above is preferably set within a range of 90Ω to 150Ω.

  According to the touch panel of the present embodiment, the potentials extending in the Y and Y directions are set by making the resistance values at both ends of the electrode patterns 125 to 128 higher than the resistance values at the center portions of the electrode patterns 125 to 128. Since it is possible to eliminate the distortion of the potential distribution constituted by the lines and the distortion of the potential distribution constituted by the potential lines extending in the X and X directions, accurate position detection can be performed.

(Sixth embodiment)
FIG. 21 is a perspective view showing a schematic configuration of a touch panel according to the sixth embodiment of the present invention. In FIG. 21, the same components as those of the touch panel 105 of the fourth embodiment are denoted by the same reference numerals. In FIG. 21, it is difficult to illustrate the plurality of groove portions 23, and therefore the illustration of the plurality of groove portions 23 is omitted.

  Referring to FIG. 21, the touch panel 140 according to the sixth embodiment is the same as the touch panel 105 according to the fourth embodiment except that the first substrate 141 is provided instead of the first substrate 106. The touch panel 105 is configured in the same manner.

  22 is a plan view of the first substrate shown in FIG. 21, and FIG. 23 is a cross-sectional view of the first substrate shown in FIG. 22 in the JJ line direction. 22 and 23, the same components as those of the first substrate 106 shown in FIGS. 15 and 16 are denoted by the same reference numerals.

  Referring to FIGS. 22 and 23, the first substrate 141 is the same as the first substrate except that an electrode 145 is provided instead of the electrode 108 provided on the first substrate 105 described in the fourth embodiment. The substrate 106 has the same configuration.

  The electrode 143 is configured in the same manner as the electrode 108 except that electrode patterns 145 to 148 are provided instead of the electrode patterns 111 to 114 provided on the electrode 108 described in the fourth embodiment.

  The electrode pattern 145 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power supply unit 46 and the power supply unit 48. The electrode pattern 145 is a pattern extending in the X and X directions. The electrode pattern 145 has an end portion 151 connected to the power feeding portion 46 and an end portion 152 connected to the power feeding portion 48.

  The upper surface 151 </ b> A of the end portion 151 is an inclined surface that is inclined in a direction from the central portion of the electrode pattern 145 toward the power feeding portion 46. As a result, the end portion 151 is shaped such that its thickness is reduced in the direction from the central portion of the electrode pattern 145 toward the power feeding portion 46. In other words, the end portion 151 has a shape in which the resistance value gradually increases in the direction from the central portion of the electrode pattern 145 toward the power feeding portion 46.

  An upper surface 152 </ b> A of the end portion 152 is an inclined surface that is inclined in a direction from the center portion of the electrode pattern 145 toward the power feeding portion 48. As a result, the end portion 152 is shaped so that its thickness is reduced in the direction from the central portion of the electrode pattern 145 toward the power feeding portion 48. In other words, the end portion 152 has a shape in which the resistance value gradually increases in the direction from the central portion of the electrode pattern 145 toward the power feeding portion 48.

  As described above, the end portion 151 whose thickness is reduced in the direction from the central portion of the electrode pattern 145 toward the power feeding portion 46 and the thickness is thin in the direction from the central portion of the electrode pattern 145 toward the power feeding portion 48. By providing the electrode pattern 145 having the end portion 152 and increasing the resistance value at both ends of the electrode pattern 145, the same effect as that of the electrode pattern 111 described in the fourth embodiment can be obtained. it can.

  The electrode pattern 146 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power feeding unit 47 and the power feeding unit 49. The electrode pattern 146 is a pattern extending in the X and X directions. The electrode pattern 146 has the same configuration as the electrode pattern 145 described above. An end portion 151 constituting the electrode pattern 146 is connected to the power feeding portion 49. Further, the end portion 152 constituting the electrode pattern 146 is connected to the power feeding portion 47.

  As described above, the end portion 151 whose thickness is reduced in the direction from the central portion of the electrode pattern 146 toward the power feeding portion 49 and the thickness is thin in the direction from the central portion of the electrode pattern 146 toward the power feeding portion 47. By providing the electrode pattern 146 having the end portion 152 and increasing the resistance value at both ends of the electrode pattern 146, the same effect as the electrode pattern 112 described in the fourth embodiment can be obtained. it can.

  The electrode pattern 147 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power supply unit 46 and the power supply unit 49. The electrode pattern 147 is a pattern extending in the Y and Y directions. The electrode pattern 147 has the same configuration as the electrode pattern 145. An end portion 151 constituting the electrode pattern 147 is connected to the power feeding portion 46, and an end portion 152 constituting the electrode pattern 147 is connected to the power feeding portion 49.

  As described above, the end portion 151 whose thickness is reduced in the direction from the central portion of the electrode pattern 147 toward the power feeding portion 46 and the thickness is thin in the direction from the central portion of the electrode pattern 147 toward the power feeding portion 49. By providing the electrode pattern 147 having the end portion 152 and increasing the resistance value at both ends of the electrode pattern 147, the same effect as that of the electrode pattern 113 described in the fourth embodiment can be obtained. it can.

  The electrode pattern 148 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power feeding unit 47 and the power feeding unit 48. The electrode pattern 148 is a pattern extending in the Y and Y directions. The electrode pattern 148 has the same configuration as the electrode pattern 147 described above. An end 151 constituting the electrode pattern 148 is connected to the power feeding unit 48. Further, the end portion 152 constituting the electrode pattern 148 is connected to the power feeding portion 47.

  As described above, the end portion 151 whose thickness is reduced in the direction from the central portion of the electrode pattern 148 toward the power feeding portion 48 and the thickness is thin in the direction from the central portion of the electrode pattern 148 toward the power feeding portion 47. By providing the electrode pattern 148 having the end portion 152 and increasing the resistance value at both ends of the electrode pattern 148, the same effect as the electrode pattern 114 described in the fourth embodiment can be obtained. it can.

  As a material of the electrode patterns 145 to 148 having the above-described configuration, for example, silver / carbon paste can be used.

  The resistance values of the electrode patterns 145 to 148 are preferably set within the range of 90Ω to 150Ω.

  According to the touch panel of the present embodiment, the end portions 151 and 152 whose thickness decreases as the distance from the center portion of the electrode patterns 145 to 148 is provided, and the portion of the electrode pattern 145 located between the end portions 151 and 152 is provided. By making the resistance values of the end portions 151 and 152 higher than the resistance value of ˜148, both ends of a potential line (not shown) extending in the Y and Y directions can be expanded in the X and X directions. In addition, both ends of a potential line (not shown) extending in the X and X directions can be expanded in the Y and Y directions.

  Accordingly, it is possible to eliminate the distortion of the potential distribution constituted by the potential lines extending in the Y and Y directions and the distortion of the potential distribution constituted by the potential lines extending in the X and X directions. , Accurate position detection can be performed.

(Seventh embodiment)
FIG. 24 is a perspective view showing a schematic configuration of the touch panel according to the seventh embodiment of the present invention. In FIG. 24, the same components as those of the touch panel 105 of the fourth embodiment are denoted by the same reference numerals. In FIG. 24, since it is difficult to illustrate the plurality of groove portions 23, the illustration of the plurality of groove portions 23 is omitted.

  Referring to FIG. 24, the touch panel 155 of the seventh embodiment is the same as the touch panel 105 of the fourth embodiment except that a first substrate 156 is provided instead of the first substrate 106. The touch panel 105 is configured in the same manner.

  25 is a plan view of the first substrate shown in FIG. 24, and FIG. 26 is a cross-sectional view of the first substrate shown in FIG. 25 in the KK line direction. 25 and 26, the same components as those of the first substrate 106 shown in FIGS. 15 and 16 are denoted by the same reference numerals.

  25 and FIG. 26, the first substrate 156 is the same as the first substrate except that the electrode 157 is provided instead of the electrode 108 provided on the first substrate 105 described in the fourth embodiment. The substrate 106 has the same configuration.

  The electrode 157 is configured in the same manner as the electrode 108 except that the electrode patterns 161 to 164 are provided instead of the electrode patterns 111 to 114 configuring the electrode 108 described in the fourth embodiment.

  The electrode pattern 161 is a pattern extending in the X and X directions, and has a configuration in which conductive patterns 166 to 168 having different lengths are stacked. The conductive pattern 166 is a pattern arranged in the lowermost layer, and is the longest pattern. The conductive pattern 166 is disposed on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power supply unit 46 and the power supply unit 48. One end of the conductive pattern 166 is connected to the power supply unit 46, and the other end of the conductive pattern 166 is connected to the power supply unit 48.

  The conductive pattern 167 is a pattern that is shorter than the conductive pattern 166 and longer than the conductive pattern 168. The conductive pattern 167 is disposed on the conductive pattern 166 so that steps are formed at both ends of the electrode pattern 161. The width of the conductive pattern 167 can be configured to be substantially equal to the width of the conductive pattern 166, for example.

  The conductive pattern 168 is a pattern arranged in the uppermost layer, and is the shortest pattern. The conductive pattern 168 is disposed on the conductive pattern 167 so that steps are formed at both ends of the electrode pattern 161. The width of the conductive pattern 168 can be configured to be substantially equal to the width of the conductive patterns 166 and 167, for example.

  In this way, the plurality of conductive patterns 166 to 168 are stacked so that the length of the conductive pattern decreases from the conductive pattern 166 disposed in the lowermost layer toward the conductive pattern 168 disposed in the uppermost layer. By forming a step at both ends of the pattern 161, it is possible to increase the resistance value at both ends of the electrode pattern 161.

  Thereby, the electrode pattern 161 having the above-described configuration can obtain the same effect as the electrode pattern 111 described in the fourth embodiment.

  The electrode pattern 162 is a pattern extending in the X and X directions, and is provided on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power supply unit 47 and the power supply unit 49. The electrode pattern 162 has the same configuration as the electrode pattern 161 described above. One end portion of the conductive pattern 166 constituting the electrode pattern 162 is connected to the power feeding portion 49. Further, the other end of the conductive pattern 166 constituting the electrode pattern 162 is connected to the power feeding unit 47.

  The electrode pattern 163 is a pattern extending in the Y and Y directions, and is provided on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power supply unit 46 and the power supply unit 49. The electrode pattern 163 has the same configuration as the electrode pattern 161 described above. One end portion of the conductive pattern 166 constituting the electrode pattern 163 is connected to the power feeding unit 46. In addition, the other end of the conductive pattern 166 constituting the electrode pattern 163 is connected to the power feeding unit 49.

  The electrode pattern 164 is a pattern extending in the Y and Y directions, and is provided on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power supply unit 47 and the power supply unit 48. The electrode pattern 164 has the same configuration as the electrode pattern 161 described above. One end portion of the conductive pattern 166 constituting the electrode pattern 164 is connected to the power feeding unit 48. The other end of the conductive pattern 166 constituting the electrode pattern 164 is connected to the power feeding unit 47.

  As a material of the electrode patterns 161 to 164 configured as described above, for example, silver / carbon paste can be used.

  The resistance value of each of the electrode patterns 161 to 164 configured as described above is preferably set within a range of 90Ω to 150Ω.

  According to the touch panel of the present embodiment, the plurality of conductive patterns 166 to 168 are configured such that the length of the conductive pattern decreases from the conductive pattern 166 disposed in the lowermost layer toward the conductive pattern 168 disposed in the uppermost layer. And the resistance values of both ends of the electrode patterns 161 to 164 are made higher than the resistance values of the electrode patterns 161 to 164 of other portions. Is possible.

  Thereby, a distortion of a potential distribution constituted by potential lines extending in the Y and Y directions (not shown) and a distortion of a potential distribution constituted by potential lines extending in the X and X directions (not shown). ) Can be eliminated, so that accurate position detection can be performed.

  FIG. 27 is a cross-sectional view of another first substrate applicable to the touch panel of the present embodiment. 27, the same components as those of the first substrate 141 shown in FIG. 23 and the first substrate 156 shown in FIG.

  In the present embodiment, the case where the electrode patterns 161 to 168 are configured by stacking conductor patterns 167 and 168 having different lengths on the conductor pattern 166 has been described as an example, but as shown in FIG. In addition, the electrode patterns 161 to 168 may be configured by laminating the electrode pattern 145 shown in FIG. 23 on the conductor pattern 166. In this case, the same effect as that of the touch panel 155 of this embodiment can be obtained.

(Eighth embodiment)
FIG. 28 is a perspective view showing a schematic configuration of the touch panel according to the eighth embodiment of the present invention. In FIG. 28, the same components as those of the touch panel 105 (see FIG. 15) of the fourth embodiment are denoted by the same reference numerals. In FIG. 28, it is difficult to illustrate the plurality of groove portions 23, and therefore the illustration of the plurality of groove portions 23 is omitted.

  Referring to FIG. 28, the touch panel 175 according to the eighth embodiment is the same as the touch panel 105 according to the fourth embodiment except that a first substrate 176 is provided instead of the first substrate 106 provided. The touch panel 105 is configured in the same manner.

  FIG. 29 is a plan view of the first substrate shown in FIG. 29, the same symbols are affixed to the same constituent portions as those of the first substrate 106 shown in FIG.

  Referring to FIG. 29, the first substrate 176 is the same as the first substrate 106 except that an electrode 178 is provided instead of the electrode 108 provided on the first substrate 106 described in the fourth embodiment. It is set as the same structure.

  The electrode 178 is configured in the same manner as the electrode 108 except that electrode patterns 181 to 184 are provided instead of the electrode patterns 111 to 114 configuring the electrode 108 described in the fourth embodiment.

  The electrode pattern 181 is provided on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power supply unit 46 and the power supply unit 48. The electrode pattern 181 includes a conductive pattern 185 and a through portion 186. The conductive pattern 185 is a pattern extending in the X and X directions. One end of the conductive pattern 185 is connected to the power feeding unit 46. The other end of the conductive pattern 186 is connected to the power feeding unit 48.

  The through portion 186 is formed at both ends of the conductive pattern 185. The penetrating portion 186 penetrates the conductive pattern 185. The penetrating portion 186 is shaped such that the width becomes narrower from the power feeding portions 46 and 48 toward the central portion of the electrode pattern 181. The shape of the penetrating portion 186 can be, for example, a triangle in plan view.

  By forming the penetrating portion 186 having such a shape at both ends of the conductive pattern 185, the resistance value at both ends of the conductive pattern 185 increases from the power feeding portions 46 and 48 toward the center of the electrode pattern 181. It becomes possible to do.

  As a result, the electrode pattern 181 configured as described above can obtain the same effects as those of the electrode pattern 111 described in the fourth embodiment.

  The electrode patterns 182 to 184 have the same configuration as the electrode pattern 181 described above. That is, the electrode patterns 182 to 184 are formed such that the resistance values at both ends of the conductive pattern 185 are directed from the central portion of the conductive pattern 185 toward the power feeding portions 46 to 49 by forming the through portions 186 at both ends of the conductive pattern 185. It is comprised so that it may become high with respect to.

  The electrode pattern 182 is provided on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power feeding unit 47 and the power feeding unit 49. One end of the electrode pattern 182 is connected to the power feeding unit 49. The other end of the electrode pattern 182 is connected to the power feeding unit 47.

  The electrode pattern 183 is provided on the upper surface 22 </ b> A of the first transparent resistance film 22 located between the power feeding unit 46 and the power feeding unit 49. One end of the electrode pattern 183 is connected to the power supply unit 46, and the other end of the electrode pattern 183 is connected to the power supply unit 49.

  The electrode pattern 184 is provided on the upper surface 22 </ b> A of the first transparent resistance film 22 in a portion located between the power feeding unit 47 and the power feeding unit 48. One end of the electrode pattern 184 is connected to the power feeding unit 48. The other end of the electrode pattern 184 is connected to the power feeding unit 47.

  As a material of the electrode patterns 181 to 184 configured as described above, for example, silver / carbon paste can be used. Moreover, the resistance value of each electrode pattern 181 to 184 may be set within a range of 90Ω to 150Ω.

  The touch panel 175 of the eighth embodiment configured as described above can obtain the same effects as the touch panel 105 of the fourth embodiment.

  The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to such specific embodiments, and within the scope of the present invention described in the claims, Various modifications and changes are possible.

  For example, the through portion 186 described in the eighth embodiment may be formed in the electrode patterns 125 to 128, 145 to 148, and 161 to 164 described in the fifth to seventh embodiments.

10, 65, 90, 105, 120, 140, 155, 175 Touch panel 11, 11-1, 66, 66-1, 91, 91-1, 106, 121, 141, 156, 176 First substrate 12 Second Substrate 13 Spacer 15 Flexible substrate 21 First transparent substrate main body 21A Upper surface 22 First transparent resistance film 23 Groove portion 24 First groove 25, 68, 68-1, 93, 93-1, 108, 123, 145 157,178 Electrodes 27-29 Second grooves 31-34 Sides 36-39 Corners 41-44, 71-74, 111-114, 125-128, 145-148, 161-164, 181-184 Electrode pattern 46 To 49 Power feeding portion 52, 69, 95, 117 Potential distribution 61 Second transparent substrate body 61A, 62A Lower surface 62 Second transparent resistance film 63 Coordinate detection Electrodes 76, 77, 81, 82 Wiring patterns 77A, 77B, 82A, 82B Cutting portions 79, 84 Connection portions 97, 98 Through portions 101, 102 Conductive pastes 111A, 111B, 112A, 112B, 113A, 113B, 114A, 114B, 151 and 152 end 131 and 135 the first conductor pattern 132 and 133 the second conductor pattern 151A, 152A inclined surface 166～168,185 conductive pattern a operation area _{C 1, C 2, D 1} , D 2, E ₁ , E ₂ , F ₁ , F ₂ , G ₁ , G ₂ , H ₁ , H ₂ strain generation region

Claims (4)

A first transparent substrate body having a rectangular shape;
A first transparent resistance film formed on an upper surface of the first transparent substrate body and having an operation region;
The electrode pattern disposed on the upper surface of the first transparent resistance film so as to correspond to the four sides of the first transparent substrate body , and the portions corresponding to the four corners of the first transparent substrate body An electrode having a power feeding portion disposed on the upper surface of the first transparent resistance film and configured integrally with the electrode pattern;
It is formed in a U-shape that penetrates through the first transparent resistance film in a portion corresponding to the electrode pattern formation region, contacts the end side of the first transparent substrate body in a plan view, and faces outward. A plurality of grooves configured to increase the contact area between the electrode pattern and the first transparent resistance film from the center of the electrode pattern toward the end of the electrode pattern;
A first substrate having:
A second transparent substrate body disposed so as to face the first transparent resistance film via a spacer, and formed on a lower surface of the second transparent substrate body, facing the first transparent resistance film. A second transparent resistance film, a coordinate detection electrode formed on the lower surface of the second transparent resistance film,
A second substrate having:
With
When a voltage is applied to the power feeding unit, the touch panel detects the coordinates of the contact position by detecting the potential of the contact position based on the potential distribution formed in the first transparent resistance film,
A plurality of first transparent films extending through the first transparent resistance film in a portion located between the groove portions and extending in a direction orthogonal to the arrangement direction of the plurality of groove portions. Provided a groove,
Said first transparent resistive film portion located between the electrode pattern of the portion facing the potential distribution distortion generation region and the potential distribution distortion generation region, as well as through the first transparent resistive film, the a second groove extending in a direction perpendicular to the first groove, the second groove, connecting a plurality of the first grooves to each other, or the plurality of the first grooves groove A touch panel characterized by connecting to the touch panel. A first transparent substrate body having a rectangular shape;
A first transparent resistance film formed on an upper surface of the first transparent substrate body and having an operation region;
The electrode pattern disposed on the upper surface of the first transparent resistance film so as to correspond to the four sides of the first transparent substrate body , and the portions corresponding to the four corners of the first transparent substrate body An electrode having a power feeding portion disposed on the upper surface of the first transparent resistance film and configured integrally with the electrode pattern;
The electrode pattern is formed so as to penetrate through the first transparent resistance film at a portion corresponding to the electrode pattern formation region, and the electrode pattern and the first pattern are moved from the center of the electrode pattern toward the end of the electrode pattern. A plurality of grooves configured to increase the contact area with the transparent resistance film,
A first substrate having:
A second transparent substrate body disposed so as to face the first transparent resistance film via a spacer, and formed on a lower surface of the second transparent substrate body, facing the first transparent resistance film. A second transparent resistance film, and a coordinate detection electrode formed on the lower surface of the second transparent resistance film;
A second substrate having:
With
When a voltage is applied to the power feeding unit, the touch panel detects the coordinates of the contact position by detecting the potential of the contact position based on the potential distribution formed in the first transparent resistance film,
Potential resistance of the electrode pattern of the distribution distortion generation region and the portion facing the touch panel, wherein the not higher than the resistance value of the electrode pattern of the portion not facing the potential distribution distortion generation area. The electrode pattern includes a pair of wiring patterns extending in an arrangement direction of the plurality of groove portions, and a connection portion that is disposed between the pair of wiring patterns and electrically connects the pair of wiring patterns. And
3. The touch panel according to claim 2 , wherein one of the pair of wiring patterns in a portion facing the potential distribution strain generation region has a pair of cut portions. A first transparent substrate body having a rectangular shape;
A first transparent resistance film formed on an upper surface of the first transparent substrate body and having an operation region;
The electrode pattern disposed on the upper surface of the first transparent resistance film so as to correspond to the four sides of the first transparent substrate body , and the portions corresponding to the four corners of the first transparent substrate body An electrode having a power feeding portion disposed on the upper surface of the first transparent resistance film and configured integrally with the electrode pattern;
The electrode pattern is formed so as to penetrate through the first transparent resistance film at a portion corresponding to the electrode pattern formation region, and the electrode pattern and the first pattern are moved from the center of the electrode pattern toward the end of the electrode pattern. A plurality of grooves configured to increase the contact area with the transparent resistance film,
A first substrate having:
A second transparent substrate body disposed so as to face the first transparent resistance film via a spacer, and formed on a lower surface of the second transparent substrate body, facing the first transparent resistance film. A second transparent resistance film, a coordinate detection electrode formed on the lower surface of the second transparent resistance film,
A second substrate having:
With
When a voltage is applied to the power feeding unit, the touch panel detects the coordinates of the contact position by detecting the potential of the contact position based on the potential distribution formed in the first transparent resistance film,
The electrode pattern is provided with a plurality of through portions arranged in the extending direction of the electrode pattern and penetrating the electrode pattern,
Panel, characterized in that the said penetration portion formed in the electrode pattern of the portion facing the potential distribution distortion generation area, in which the conductive paste is filled.

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