CN203930725U - touch panel - Google Patents

Abstract

The utility model provides a touch panel, comprising a substrate, a flexible circuit board and a touch sensing element. The substrate comprises a main plane, and the main plane has an active area and an inactive area surrounding the active area. The flexible circuit board has a joint surface, wherein the joint surface and the main plane are not parallel to each other. The touch sensing element comprises a plurality of electrode patterns and a plurality of connecting lines. The electrode pattern is located in the active area, and the connecting lines are respectively connected between the electrode pattern and the flexible circuit board to electrically connect the electrode pattern and the flexible circuit board, and at least part of the connecting lines are located in the inactive area, wherein the connecting lines are connected to the joint surface of the flexible circuit board.

Description

touch panel

technical field

The utility model relates to a panel, in particular to a touch panel.

Background technique

In today's information society, many information products have changed from traditional input devices such as keyboards or mice to using touch sensing panels as input devices.

In the existing touch panel, the touch sensing element is made on the surface of the substrate, and then the flexible circuit board is attached to the surface to electrically connect the touch sensing element, so that the signal of the touch sensing element can be It is transmitted to other components via the flexible circuit board. On the other hand, in the existing touch panel, the wiring of the touch sensing element is arranged on the periphery of the surface, and the peripheral wiring is covered by a shielding layer, and the shielding layer also shields the flexible circuit board and the touch sensing element. bonding area on the surface.

However, the above-mentioned bonding area will expand the scope of the shielding layer, further affecting the frame size of the touch sensing element, so that the frame size of the touch sensing element cannot be effectively reduced.

Utility model content

The purpose of the utility model is to provide a touch panel with the advantage of narrow frame.

To achieve the above purpose, a touch panel of the present invention includes a substrate, a flexible circuit board and a touch sensing element. The substrate includes a main plane, and the main plane has an active area and a non-active area surrounding the active area. The flexible circuit board has a bonding surface, wherein the bonding surface and the main plane are not parallel to each other. The touch sensing element includes a plurality of electrode patterns and a plurality of connecting lines. The electrode patterns are located in the active area, and the connection lines are respectively connected between the electrode patterns and the flexible circuit board to electrically connect the electrode patterns and the flexible circuit board, and at least part of the connection lines are located in the non-active area, wherein the connection lines are connected to the flexible circuit board. mating surface of the circuit board.

In an embodiment of the present invention, the above-mentioned touch panel further includes a flexible transparent film which is bent to have a first region connected to the main plane and a second region connected to the bonding surface. Each connection line includes a first part and a second part connected to each other, wherein the first part is arranged on the main plane of the substrate, the second part is arranged on the flexible transparent film, and the second part is between the first area and the second The junction of the zone is connected to the first part and the flexible circuit board is connected to the second zone, and the joint surface does not overlap with the main plane.

The substrate is a flexible transparent film, the flexible transparent film includes a base part and a first bending part connected to each other, the base part has the main plane, and the flexible transparent film is bent Folding so that the first bent portion is not parallel to the main plane and connected to the bonding surface, the connecting wires extend to the first bent portion to electrically connect to the flexible circuit board, wherein the bonding surface is not connected to the main plane Flat overlapping fit.

The base portion and the first bent portion are integrally formed, and the width of the base portion is the same as that of the first bent portion.

The width of the base portion is greater than the width of the first bent portion.

The distribution width W1 of the connection line on the first bent portion is smaller than the width W2 of the base portion.

The relationship between the distribution width W1 of the connection line on the first bending portion and the width W2 of the base portion is W1<(1/2)W2.

The flexible transparent film also includes a second bending part, the first bending part and the second bending part are connected to different sides of the base part, and the flexible transparent film is bent so that the Both the first bent portion and the second bent portion are not parallel to the main plane so as to be connected to the flexible circuit board, wherein a part of the electrode patterns extend to the first bent portion through the connection lines. It is electrically connected to the flexible circuit board, and another part of the electrode patterns is electrically connected to the flexible circuit board through a part of the connection lines extending to the second bending portion.

The bonding surface of the flexible circuit board includes a first bonding surface and a second bonding surface, the first bonding surface and the second bonding surface are respectively parallel to the first bending portion and the second bending portion, And the normal direction of the first bonding surface intersects the normal direction of the second bonding surface.

The width of the base portion is the same as that of the first bent portion, and the length of the base portion is the same as that of the second bent portion.

The width of the base portion is greater than the width of the first bent portion, and the length of the base portion is greater than the length of the second bent portion.

The distribution width W1 of the part extending to the first bending part among the connecting lines is smaller than the width W2 of the base part, and the distribution width W4 of the part extending to the second bending part among the connecting lines is smaller than the width W2 of the substrate part. The length W5 of the base part.

The relationship between the distribution width W1 of the portion extending to the first bending portion of the connecting lines and the width W2 of the base portion is W1<(1/2)W2, and the connecting lines extending to the second The relationship between the distribution width W4 of the bent portion and the length W5 of the base portion is W4<(1/2)W5.

The substrate includes at least one side, connected to the main plane and parallel to the first bonding surface, the flexible circuit board is bonded to the side, and the connecting lines extend from the passive area to the side to electrically connect The electrode patterns and the flexible circuit board.

The electrode patterns include a plurality of first electrode parts, a plurality of second electrode parts, a plurality of first connecting parts and a plurality of second connecting parts, wherein the first connecting parts connect the first connecting parts along a first direction. electrode parts to form a plurality of first electrode series, and the second connecting parts connect the second electrode parts along a second direction to form a plurality of second electrode series, wherein the first direction and the second The directions intersect and the connection lines include a plurality of first connection lines connected to the first electrode series and a plurality of second connection lines connected to the second electrode series.

The substrate is a flexible transparent film, and the flexible transparent film includes a base part and a bending part connected to each other, and the flexible transparent film is bent to make the bending part and the flexible circuit Board connection, the first electrode series and the first connection lines are arranged on a first surface of the flexible transparent film, and the second electrode series and the second connection lines are arranged on the flexible transparent film. A second surface of the flexible transparent film, the first surface is opposite to the second surface.

The bonding surface of the flexible circuit board includes a first bonding surface and a second bonding surface, the second bonding surface is parallel to the first bonding surface, and the first bonding surface and the second bonding surface are arranged face to face , the bent portion of the flexible transparent film is located between the first joint surface and the second joint surface, wherein the first connecting wires extending from the first surface to the bent portion are electrically connected to the The first bonding surface and the second connecting wires extending from the second surface to the bent portion are electrically connected to the second bonding surface.

The bonding surface extends to the side of the substrate, and the bonding surface partially overlaps with the side of the substrate, wherein the side is perpendicular to the main plane.

The bonding surface and the side surface of the substrate are respectively located on the upper and lower sides of the horizontal plane where the main plane is located.

The touch sensing element is a single-layer electrode structure.

The normal direction of the bonding surface intersects the normal direction of the principal plane.

The utility model has the advantage that, in the touch panel, the connecting wire of the touch sensing element is bonded to the joint surface of the flexible circuit board, wherein the normal direction of the joint surface intersects with the normal direction of the main plane, so that the touch The bonding area between the control sensing element and the flexible circuit board is not located on the main plane, so that the range of the shielding layer can be reduced to effectively reduce the size of the frame and achieve the effect of a narrow frame.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with accompanying drawings.

Description of drawings

FIG. 1 is a partially exploded schematic view of a touch panel according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the touch panel of FIG. 1;

Fig. 3 is a schematic sectional view along line I-I' among Fig. 1;

Fig. 4 is a partially exploded schematic view of a touch panel according to another embodiment of the present invention;

Fig. 5 is a partially exploded schematic view of a touch panel according to another embodiment of the present invention;

6 is a schematic cross-sectional view of the touch panel of FIG. 5;

Fig. 7 is a perspective view of another embodiment of the flexible transparent film of Fig. 5;

Fig. 8 is a perspective view of another embodiment of the flexible transparent film of Fig. 5;

Fig. 9 is a flexible circuit board and the flexible transparent film of Fig. 8;

Fig. 10 is a partially exploded schematic view of a touch panel according to another embodiment of the present invention;

11 is a schematic cross-sectional view of the touch panel of FIG. 10;

Fig. 12 is a partially exploded schematic diagram of a touch panel according to another embodiment of the present invention;

FIG. 13 is a schematic cross-sectional view of the touch panel in FIG. 12 .

Explanation of reference signs:

100, 200, 300, 400: touch panel;

110, 310: substrate;

112, 216, 312, 416: main plane;

112a, 216a, 312a, 416a: active area;

112b, 216b, 312b, 416b: non-active areas;

114, 314: side;

120, 220, 220a, 320, 420: flexible circuit board;

122, 222, 224, 322, 422: joint surfaces;

130, 130a, 230, 230a, 330, 430: touch sensing elements;

132, 232, 332, 432: electrode patterns;

132a, 432a: first electrode part;

132b, 432b: second electrode part;

132c, 432c: the first connecting part;

132d, 432d: the second connecting part;

132e: driving electrodes;

132f: scanning electrodes;

134, 134c, 234, 334, 334a, 434: connection lines;

134a: first part;

134b: the second part;

136: insulating layer;

136a: island insulating structure;

140, 210, 210a, 210b, 410: flexible transparent film;

142: first district;

144: second district;

150, 250, 350, 450: adhesive;

160, 260, 360, 460: masking layer;

170, 270, 470: display module;

180, 280, 480: cover plate;

212, 412: substrate department;

214, 214a: the first bending part;

218: the second bending part;

222a, 422a: first joint surface;

222b, 422b: second joint surface;

290, 490: Adhesive layer;

434a: the first connection line;

434b: the second connection line;

414: bending part;

418a: first surface;

418b: second surface;

N1, N2, N3, N4, N5, N6, N7, N8, N9, N10: normal direction;

D1: first direction;

D2: second direction;

S1: first electrode series;

S2: second electrode series;

W1, W2, W3, W4, W5, W6: Width.

Detailed ways

FIG. 1 is a partially exploded schematic diagram of a touch panel according to an embodiment of the present invention. FIG. 2 is a schematic cross-sectional view of the touch panel in FIG. 1 . Please refer to FIG. 1 and FIG. 2 at the same time. The touch panel 100 includes a substrate 110, a flexible circuit board 120, a touch sensing element 130 and a shielding layer 160, and the touch panel 100 can be arranged on a display module 170. superior. The substrate 110 is, for example, a glass substrate or a substrate made of other transparent materials. The substrate 110 includes a main plane 112, and the main plane 112 has an active area 112a and a non-active area 112b surrounding the active area 112a. The flexible circuit board 120 has a bonding surface 122 , wherein the bonding surface 122 and the main plane 112 are not parallel to each other. In this embodiment, both the bonding surface 122 and the main plane 112 are planes, and the normal direction N1 of the bonding surface 122 intersects the normal direction N2 of the main plane 112 . In this embodiment, the normal direction N1 of the bonding surface 122 is, for example, the normal direction N2 perpendicular to the principal plane 112 , but in other embodiments, the intersection angle of N1 and N2 can be any angle greater than zero. Additionally, in other embodiments, the joint surface 122 and the main plane 112 may be curved surfaces. For example, when the flexible circuit board 120 is not attached on other planes, the bonding surface 122 can be any curved surface and not parallel to the main plane 112 .

The touch sensing element 130 includes a plurality of electrode patterns 132 and a plurality of connection lines 134 for realizing the touch function of the touch panel 100 . The electrode patterns 132 are located in the active area 112a, and the connection lines 134 extend from the active area 112a to the non-active area 112b, so that at least part of the connection lines 134 are located in the non-active area 112b. The shielding layer 160 is disposed in the non-active area 112b to shield the connection lines 134 located in the non-active area 112b. The material of the shielding layer 160 can be ink, photoresist material or ceramic material. The color of the shielding layer 160 is, for example, black, white or other colors. The connecting wires 134 are respectively connected between the electrode patterns 132 and the flexible circuit board 120 to electrically connect the electrode patterns 132 and the flexible circuit board 120 . Thus, the signal of the touch sensing element 130 can be transmitted to the flexible circuit board 120 .

The touch panel 100 of this embodiment is, for example, a capacitive touch panel. When the user's touch position is located in the active area 112a, for example, the electrode pattern 132 is touched, the capacitance change of the electrode pattern 132 can determine the use of the touch panel. the touch location of the user. On the contrary, if the user's touch position is located in the inactive area 112b, for example, touches the connection line 134 located in the inactive area 112b, it is regarded as an invalid touch. Therefore, the active and inactive recorded in this embodiment mainly indicate whether the user touches the area to constitute an effective touch.

Fig. 3 is a schematic cross-sectional view along line I-I' in Fig. 1 . Please refer to FIG. 1 and FIG. 3 at the same time. In detail, in the touch sensing element 130 of this embodiment, the electrode pattern 132 includes a plurality of first electrode portions 132a, a plurality of second electrode portions 132b, and a plurality of first connection lines. part 132c and a plurality of second connecting parts 132d. The first connection part 132c connects the first electrode part 132a along a first direction D1 to form a plurality of first electrode series S1, and the second connection part 132d connects the second electrode part 132b along a second direction D2 to form a plurality of first electrode series S1. The second electrode series S2. An insulating layer 136 is disposed between the first connecting portion 132c and the second connecting portion 132d to electrically insulate the first electrode series S1 and the second electrode series S2 from each other.

In this embodiment, the insulating layer 136 includes a plurality of insulating structures 136a (only one of which is shown in the drawing), which are correspondingly disposed between the first connection portions 132c and the second connection portions 132d. In other embodiments, the insulating layer 136 can be distributed on the entire surface of the substrate 110 and can include a plurality of contact windows, wherein these contact windows are correspondingly arranged at the ends of the first connection portion 132c, and the first connection portion 132c passes through the contact window Two adjacent first electrode parts 132a are electrically connected. The connection wires 134 are connected to the first electrode series S1 and the second electrode series S2 respectively. The first direction D1 and the second direction D2 intersect. In this embodiment, the first direction D1 and the second direction D2 are, for example, two directions perpendicular to each other on the main plane 112 .

It should be noted here that the touch sensing element 130 in the form of electrode series is only for illustration and is not intended to limit the utility model, and those skilled in the art can use other forms of touch sensing element 130 to realize The touch function of the touch panel 100, for example, the design concept of the present utility model can also be extended and applied to a touch panel whose touch sensing element is a single-layer electrode structure (One layer electrode or called single layer electrode), as shown in the first As shown in FIG. 4, the touch sensing element 130a includes a single-layer electrode pattern formed on the substrate 110, wherein the single-layer electrode pattern has a plurality of driving electrodes 132e, a plurality of scanning electrodes 132f, and a plurality of connecting lines 134c.

Please refer to FIG. 1 and FIG. 2 at the same time, the connection wire 134 is connected to the joint surface 122 of the flexible circuit board 120, and the joint surface 122 and the main plane 112 are not parallel to each other, so that the joint between the connection wire 134 and the flexible circuit board 120 The region is not located on the main plane 112 of the substrate 110 , that is, the bonding surface 122 of the flexible circuit board 120 does not overlap or bond with the main plane 112 of the substrate 110 . Therefore, the main plane 112 of the substrate 110 does not require additional space for the bonding area of the connecting wire 134 and the flexible circuit board 120, further reducing the area of the shielding layer 160, thus effectively reducing the frame size of the touch panel 100. The advantage of making the touch panel 100 have a narrow frame.

In this embodiment, the touch panel 100 further includes a flexible transparent film 140 . The flexible transparent film 140 is connected to the main plane 112 and the bonding surface 122 through an adhesive 150 , such as conductive glue. The flexible transparent film 140 has a first region 142 and a second region 144 through bending. The first area 142 is connected to the main plane 112 and the second area 144 is connected to the bonding surface 122. In this embodiment, the bonding surface 122 of the flexible circuit board 120 and the side surface 114 of the substrate 110 are located at the upper and lower sides of the horizontal plane where the main plane 112 is located. side, so that the second region 144 is bent in a direction away from the substrate 110 . Moreover, each connection line 134 includes a first part 134a and a second part 134b connected to each other, wherein the first part 134a is configured on the main plane 112 of the substrate 110, and the second part 134b is configured on the flexible transparent film 140 and is formed by The first zone 142 extends continuously to the second zone 144 . The second portion 134b is connected to the first portion 134a at the junction of the first area 142 and the second area 144 and is connected to the flexible circuit board 120 at the second area 144 . That is to say, in this embodiment, each connection line 134 is not an integrally formed linear structure but a conductor structure formed by connecting a linear conductor structure arranged on the substrate 110 and the flexible transparent film 140 to define a continuous conductive path. .

In this embodiment, the flexible transparent film 140 and the second portion 134 b thereon are used to electrically connect the connecting wire 134 to the bonding surface 122 of the flexible circuit board 120 . Specifically, in this embodiment, through the bendable property of the flexible transparent film 140, the bent flexible transparent film 140 is connected to two planes that are not on the same horizontal plane, that is, the main plane 112 and the joint surface 122, And the components on the main plane 112 and the bonding surface 122 are respectively electrically connected through the second portion 134 b disposed on the flexible transparent film 140 . On the other hand, the flexible transparent film 140 has good light transmittance, so if the connecting wire 134 is made of a material with good light transmittance, such as indium tin oxide, the touch panel 100 can also omit the shielding layer 160, so that the entire main body The planes 112 are all light-transmitting areas and achieve a frameless design.

The display module 170 provides the display function of the touch panel 100. In this embodiment, the flexible circuit board 120 can be selectively connected to the display module 170, so that the touch sensing element 130 is electrically connected to the display module through the flexible circuit board 120. 170. Certainly, the present invention does not limit the electrical connection manner between the touch sensing element 130 and the display module 170 . In addition, for this embodiment, although FIG. 2 shows that the shielding layer 160 is disposed on the substrate 110, the shielding layer 160 may also be optionally disposed on a cover plate (not shown) in other embodiments, wherein, The cover plate will be disposed on the substrate 110, that is, the touch sensing element 130 will be between the cover plate and the substrate 110, and the shielding layer 160 on the cover plate will face the touch sensing element 130, that is, the cover plate 180 is located The outermost part of the entire touch panel 100 is used to protect its internal components. The cover plate is, for example, a glass cover plate or a cover plate made of other transparent materials. In this way, the substrate 110 can be a flexible substrate, such as a plastic substrate. However, this embodiment is not limited thereto. As shown in FIG. 1 , if the substrate 110 has sufficient mechanical strength to protect the touch sensing element 130 and other components, the touch panel 100 may not be provided with a cover plate. In addition, in the drawings disclosed in this embodiment, the thicknesses and sizes of all the components are only for showing the configuration relationship among each other, rather than limiting the size in actual application.

FIG. 5 is a partially exploded schematic view of a touch panel according to another embodiment of the present invention. FIG. 6 is a schematic cross-sectional view of the touch panel in FIG. 5 . Please refer to FIG. 5 and FIG. 6 at the same time, the touch panel 200 includes a cover plate 280, a flexible transparent film 210, a flexible circuit board 220, a touch sensing element 230 and a shielding layer 260, and a display module 270 is disposed under the touch panel 200 (not shown in the figure), and is electrically connected to the touch panel 200 through the bonding surface 222 . The flexible transparent film 210 includes a base portion 212 and a first bending portion 214 connected to each other. The base portion 212 has a main plane 216, and the main plane 216 has an active area 216a and a non-active area 216b surrounding the active area 216a. The flexible circuit board 220 has a bonding surface 222 , wherein the normal direction N3 of the bonding surface 222 intersects the normal direction N4 of the main plane 216 . In another embodiment, the joint surface 222 and the main plane 216 are not parallel to each other or not on the same horizontal plane.

The touch sensing element 230 includes a plurality of electrode patterns 232 and a plurality of connection lines 234 . The electrode patterns 232 are located in the active area 216a, and the connection lines 234 are connected between the electrode patterns 232 and the flexible circuit board 220 to electrically connect the electrode patterns 232 and the flexible circuit board 220, and at least part of the connection lines 234 are located in the non-active area. Inside 216b. It should be noted here that the touch sensing element 230 of this embodiment is similar to the embodiment in FIG. In this embodiment, the touch sensing element 230 may also be a single-layer sensing structure, which will not be repeated here.

The cover plate 280 and the display module 270 are respectively located on opposite sides of the flexible transparent film 210 . The display module 270 provides the display function of the touch panel 200. In this embodiment, the flexible circuit board 220 can be selectively connected to the display module 270, so that the touch sensing element 230 is electrically connected to the display module through the flexible circuit board 220. 270. The cover plate 280 is, for example, a glass cover plate or a cover plate made of other transparent materials. During the manufacturing process of the touch panel 200, the touch sensing element 230 is fabricated on the flexible transparent film 210, and then the flexible transparent film 210 is attached to the cover plate 280 through the adhesive layer 290 so that the touch sensing element 230 It is located between the cover plate 280 and the flexible transparent film 210 . The shielding layer 260 is disposed on the cover plate 280 and disposed on the non-active area 216b to shield the connection lines 234 located on the non-active area 216b.

The connecting wire 234 is connected to the bonding surface 222 of the flexible circuit board 220 . Therefore, the joint area where the flexible printed circuit board 220 and the connecting wire 234 are joined is not located on the main plane 216 of the flexible transparent film 219, that is, the joint surface 222 of the flexible printed circuit board 220 does not overlap with the main plane 216. . In this way, no extra space is needed on the main plane 216 as a bonding area for the connection wire 234 and the flexible circuit board 220, further achieving a narrow frame design.

In this embodiment, the flexible transparent film 210 is bent so that the first bent portion 214 is not parallel to the main plane 216 so as to be connected to the bonding surface 222 of the flexible circuit board 220 . Moreover, the first bent portion 214 of the flexible transparent film 210 can be attached to the joint surface 222 through the adhesive 250 . Since the touch sensing element 230 is fabricated on the flexible transparent film 210, the connecting wire 234 will be bent together with the first bending portion 214 of the flexible transparent film 210, and the first bending portion 214 will be It can be electrically connected to the flexible circuit board 220 through the connecting wire 234 thereon.

It is worth mentioning that the base material part 212 and the first bending part 214 are integrally formed in this embodiment, so that the width of the base material part 212 is the same as the width of the first bending part 214 . Accordingly, when the touch sensing element 230 is manufactured on the flexible transparent film 210 , no cutting process is required, which has the advantage of reducing the manufacturing cost. On the other hand, the distribution width W1 of the connecting wires 234 on the first bending portion 214 is smaller than the width W2 of the flexible transparent film 210, and since the width W3 of the flexible circuit board 220 is approximately equal to or slightly greater than the width W1, the flexible circuit board 220 is flexible. The required area of the flexible circuit board 220 can be reduced to save cost. Preferably, the relationship between W1 and W2 can be W1<(1/2)W2, similar to the embodiment of FIG. 1, because the flexible transparent film 210 has good light transmittance, so when the connecting wire 234 is made of a material with good light transmittance, the transparent touch panel 200 can also omit the shielding layer 260 to achieve a frameless design.

The embodiments in FIG. 7 and FIG. 8 continue to use the component numbers and part of the content of the embodiment in FIG. 5 , where the same numbers are used to denote the same or similar components, and descriptions of the same technical content are omitted. For the description of omitted parts, reference may be made to the foregoing embodiments, and the following embodiments will not be repeated. FIG. 7 is a perspective view of another embodiment of the flexible transparent film of FIG. 5 . The embodiment of FIG. 7 is substantially similar to the embodiment of FIG. 5 , the difference between the two mainly lies in that the width of the base portion 212 of the flexible transparent film 210a of this embodiment is greater than the width of the first bending portion 214a. In the embodiment shown in FIG. 7 , the flexible transparent film 210a is cut off by a cutting process in the first bent portion 214a where the connection line 234 is not arranged.

FIG. 8 is a perspective view of another embodiment of the flexible transparent film of FIG. 5 . FIG. 9 is a schematic perspective view of the flexible circuit board and the flexible transparent film of FIG. 8 . FIG. 8 shows the state when the flexible transparent film 210b is not bent, and FIG. 9 shows the state when the flexible transparent film 210b is bent and the flexible circuit board 220a to which the flexible transparent film 210b is to be connected. Please refer to FIG. 8 and FIG. 9 at the same time. The flexible transparent film 210b of this embodiment is substantially similar to the embodiment of FIG. Two bending portions 218, wherein the first bending portion 214 and the second bending portion 218 are connected to different sides of the flexible transparent film 210b. It can be seen from FIG. 9 that the flexible transparent film 210b is bent so that the first bent portion 214 and the second bent portion 218 are not parallel to the main plane 216 so as to be connected to the flexible circuit board 220a.

In this embodiment, a part of the electrode pattern 232 is electrically connected to the flexible circuit board 220a through the portion 234a extending to the first bending portion 214 in the connection line 234, and another part of the electrode pattern 232 is electrically connected to the flexible circuit board 220a through the connection line 324. The portion 234b extending to the second bending portion 218 is electrically connected to the flexible circuit board 220a. Both the touch sensing element 230a and the connection line 234 of this embodiment are made on the flexible transparent film 210b, so the connection line 234a and the connection line 234b will follow the first bending portion 214 of the flexible transparent film 210b and the second bending portion 218 are bent together, so that the first bending portion 214 and the second bending portion 218 can be electrically connected to the flexible circuit board 220a through the connecting wire 234a and the connecting wire 234b.

In this embodiment, the bonding surface 222 of the flexible circuit board 220a includes a first bonding surface 222a and a second bonding surface 222b. Both the normal direction N5 of the first bonding surface 222a and the normal direction N6 of the second bonding surface 222b intersect with the normal direction N4 of the main plane 216, and the normal direction N5 of the first bonding surface 222a intersects with the second bonding surface. The normal direction N6 of 222b. The first joint surface 222 a and the second joint surface 222 b are parallel to the first bent portion 214 and the second bent portion 218 respectively. The connecting wire 234a on the first bending portion 214 is connected to the first bonding surface 222a of the flexible circuit board 220a, and the connecting wire 234b on the second bending portion 218 is connected to the second bonding surface 222b of the flexible circuit board 220a. . Thus, the touch sensing element 230a can be connected to the flexible circuit board 220a on two different joint surfaces. In this embodiment, the first bending portion 214 and the second bending portion 218 are connected to two adjacent sides of the base material portion 212, but in other embodiments, the first bending portion 214 and the second bending portion 218 may be attached to two opposite sides of the substrate portion 212 .

The base material part 212, the first bending part 214 and the second bending part 218 of this embodiment are integrally formed, so that the width of the base material part 212 is the same as the width of the first bending part 214, and the base material part 212 The length is the same as the length of the second bent portion 218 . In addition, when the first bent portion 214 and the second bent portion 218 are connected to two opposite sides of the base portion 212, the width of the first bent portion 214 and the width of the second bent portion 218 may be the same as The width of the material portion 212. Here, the description of integral molding can refer to the aforementioned embodiments, so details are not repeated here. Similarly, the distribution width W1 of the connection line 234a on the first bending portion 214 is smaller than the width W2 of the base portion 212, and since the width W3 of the flexible circuit board 222a is approximately equal to or slightly greater than the width W1, the flexible circuit board The area required by 220a can be reduced, thereby saving costs; in addition, the distribution width W4 of the connecting wire 234b on the second bent portion 218 is smaller than the length W5 of the base portion 212, and approximately equal to the width W6 of the flexible circuit board 222b. Equal to or slightly greater than the width W4, so the area required by the flexible circuit board 222b can be reduced to save costs, wherein, the relationship between W1 and W2 is preferably W1<(1/2)W2, and W4 The relationship between W5 and W5 can be W4<(1/2)W5.

FIG. 10 is a partial exploded view of a touch panel according to another embodiment of the present invention. FIG. 11 is a schematic cross-sectional view of the touch panel in FIG. 10 . Please refer to FIG. 10 and FIG. 11 at the same time, the touch panel 300 includes a substrate 310 , a flexible circuit board 320 , a touch sensing element 330 and a shielding layer 360 . The substrate 310 is, for example, a glass substrate 310 or a substrate made of other transparent materials. The substrate 310 includes a main plane 312, and the main plane 312 has an active area 312a and a non-active area 312b surrounding the active area 312a. The flexible circuit board 320 has a bonding surface 322 , wherein the normal direction N7 of the bonding surface 322 intersects the normal direction N8 of the main plane 312 .

The touch sensing element 330 includes a plurality of electrode patterns 332 and a plurality of connection lines 334 . The electrode pattern 332 is located in the active area 312a, and the connection lines 334 are respectively connected between the electrode pattern 332 and the flexible circuit board 320 to electrically connect the electrode pattern 332 and the flexible circuit board 320, and at least part of the connection lines 334 are located in the non-active area. Inside 312b. It should be noted here that the touch sensing element 330 of this embodiment is similar to the embodiment of FIG. 1 , and is a touch sensing element 330 in the form of electrode series. The description of this part can refer to the foregoing embodiments. So I won't repeat them here. The shielding layer 360 may be disposed on the substrate 310 and disposed in the non-active area 312b to shield the connection lines 334 located in the non-active area 312b. However, in other embodiments, the touch panel 100 may omit the shielding layer 360 . In addition, the touch panel 300 can also be combined with a display module (not shown in the figure). Regarding the combination of the touch panel 300 and the display module, reference can be made to the foregoing embodiments, so details are not repeated here.

The connecting wire 334 is connected to the bonding surface 322 of the flexible circuit board 320, and the normal direction N7 of the bonding surface 322 intersects the normal direction N8 of the main plane 312, so that the bonding area of the flexible circuit board 320 and the connecting wire 334 is not located The main plane 312 of the flexible transparent film can reduce the frame size of the touch panel 300 . Furthermore, in this embodiment, the substrate 310 has a side surface 314 . The side surface 314 is connected to the main plane 312 and parallel to the joint surface 322 . Side 314 is perpendicular to main plane 312 . The flexible printed circuit board 320 is bonded to the side surface 314 with an adhesive 350, and the connection wire 334 extends from the inactive area 312b to the side surface 314, that is, the bonding surface 322 partially overlaps the side surface 314 of the substrate to electrically connect the electrode pattern 332. and a flexible circuit board 320 .

The foregoing embodiments utilize the bendable properties of the flexible transparent film to connect the bent flexible transparent film to the intersecting main plane and joint surface. In this embodiment, a part 334a of the connection line 334 is made on on the side 314 of the main plane 312, and attach the bonding surface 322 of the flexible circuit board 320 to the side 314, so as to connect the electrode patterns 332 on the main plane 312 and the flexible circuit board through the continuously extending connecting wire 334 320 of the joint surface 322 . In this way, the flexible transparent film in FIG. 1 does not need to be additionally provided, which has the advantage of saving costs. In addition, in this embodiment, the connection line 334 extends from the active area 312a to the inactive area 312b, and then extends from the inactive area 312b to one of the side surfaces 314 of the substrate 310, but in other embodiments, the connection line 334 can be formed by The inactive region 312b extends to any number of sides of the substrate 310 .

It is worth mentioning that, in this embodiment, the bonding surface 322 is bonded to the side surface 314 of the substrate 310 so that the bonding surface 322 and the side surface 314 are located on the same side of the main plane 312 . However, in the foregoing embodiments, the bonding surface and the side surfaces of the substrate are located on opposite sides of the main plane. Of course, in the aforementioned embodiments, as long as the bending direction of the flexible transparent film is changed, the joint surface and the side surface can also be located on the same side of the main plane. That is to say, for the embodiment in which the flexible transparent film is bonded to the flexible circuit board, the bending direction of the flexible transparent film is not particularly limited.

In addition, if the substrate 310 and the connecting wires 334 of this embodiment are made of materials with good light transmission, the touch panel 300 can also omit the shielding layer 360 to achieve a frameless design. The description of this part is similar to the previous embodiments. So I won't repeat them here.

FIG. 12 is a partially exploded schematic view of a touch panel according to another embodiment of the present invention. FIG. 13 is a schematic cross-sectional view of the touch panel in FIG. 12 . Please refer to FIG. 12 and FIG. 13 at the same time. The touch panel 400 includes a flexible transparent film 410 , a flexible circuit board 420 , a touch sensing element 430 , a cover plate 480 and a shielding layer 460 . In this embodiment, the cover plate 480 is, for example, a glass cover plate or a cover plate made of other transparent materials. During the manufacturing process of the touch panel 400 , the touch sensing element 430 is fabricated on the flexible transparent film 410 , and then the flexible transparent film 410 is attached to the cover plate 480 through the adhesive layer 490 . The flexible transparent film 410 includes a base portion 412 and a bending portion 414 connected to each other. The base portion 412 has a main plane 416 , and the main plane 416 has an active area 416 a and a non-active area 416 b surrounding the active area 416 a. The flexible circuit board 420 has a bonding surface 422 , wherein the normal direction N9 of the bonding surface 422 intersects the normal direction N10 of the main plane 416 or the bonding surface 422 is not parallel to the main plane 416 . In this embodiment, the touch panel 400 can be selectively disposed on the display module 470 to have a display function, and the flexible circuit board 420 is electrically connected to the display module 470 . The description of this part can refer to the foregoing embodiments, so details are not repeated here.

The touch sensing element 430 includes a plurality of electrode patterns 432 and a plurality of connection lines 434 . The electrode patterns 432 are located in the active area 416a, and the connection lines 434 are connected between the electrode patterns 432 and the flexible circuit board 420 to electrically connect the electrode patterns 432 and the flexible circuit board 420, and at least part of the connection lines 434 are located in the non-active area. Inside 416b. The shielding layer 460 is disposed on the cover plate 480 and disposed on the non-active area 416b to shield the connection lines 434 located on the non-active area 416b.

The touch sensing element 430 of this embodiment is in the form of electrode series, but the arrangement is different from the embodiment of FIG. 1 . Specifically, the electrode pattern 432 includes a plurality of first electrode portions 432a, a plurality of second electrode portions 432b, a plurality of first connection portions 432c, and a plurality of second connection portions 432d. The first connection part 432c connects the first electrode part 432a along a first direction D1 to form a plurality of first electrode series S1, and the second connection part 432d connects the second electrode part 432b along a second direction D2 to form a plurality of first electrode series S1. The second electrode series S2. The connection lines 434 include a plurality of first connection lines 434a connected to the first electrode series S1 and a plurality of second connection lines 434b connected to the second electrode series S2. In this embodiment, the flexible transparent film 410 has a first surface 418a and a second surface 418b opposite, wherein the first electrode series S1 and the first connection line 434a are arranged on the first surface 418a, and the second The electrode series S2 and the second connection line 434b are disposed on the second surface 418b.

It should be noted that, in this embodiment, the first surface 418 a is substantially the same as the main plane 416 , and the first sensing series S1 and the first connection line 434 a are disposed on the main plane 416 . In addition, the foregoing embodiment arranges the first electrode series, the second electrode series, the first connection line, and the second connection line on the same surface of the flexible transparent film or the glass substrate, but in this embodiment, the first electrode series An electrode series S1 and a second electrode series S2 are fabricated on two opposite surfaces of the flexible transparent film 410 .

In this embodiment, the bonding surface 422 of the flexible circuit board 420 includes a first bonding surface 422a and a second bonding surface 422b. The second bonding surface 422b is substantially parallel to the first bonding surface 422a, and the bending portion 414 of the flexible transparent film 410 is located between the first bonding surface 422a and the second bonding surface 422b, so that the first electrode series S1 and the second bonding surface The two electrode series S2 are electrically connected to the flexible circuit board 420 by the first connecting wire 434a on the first surface 418a and the second connecting wire 434b on the second surface 418b respectively. In this embodiment, the flexible transparent film 410 can be bent so that the connecting lines 434a and 434b on both sides of the bending part 414 are bent together with the flexible transparent film 410, so that the bending part 414 It has the characteristics of double-sided conduction. The bent portion 414 can be attached to the first bonding surface 422a and the second bonding surface 422b with adhesives 450a and 450b, and is electrically connected to the flexible circuit board 420 through the first connecting wire 434a and the second connecting wire 434b.

To sum up, in the touch panel of the present invention, the connecting wire of the touch sensing element is bonded to the bonding surface of the flexible circuit board, wherein the normal direction of the bonding surface intersects with the normal direction of the main plane or the bonding surface The main plane is not parallel to each other, that is, the bonding surface and the main plane do not overlap each other, so that the joint area of the touch sensing element and the flexible circuit board is not located on the main plane, so that the scope of the shielding layer can be reduced to effectively reduce the Border size, to achieve the effect of narrow border.

The method of bonding the connecting wire to the bonding surface of the flexible circuit board is, for example, to take advantage of the bendable characteristics of the flexible transparent film, or directly extend a part of the connecting wire to the side of the substrate, and then attach the bonding surface to the side . When a flexible transparent film is used, the entire touch sensing element can be made on the flexible transparent film, so that the connecting wires can be bent accordingly, or a part of the connecting wires can be made on a flexible transparent film. , and then connect the flexible transparent film with one part of the connecting wires to the other part of the connecting wires. According to this, the utility model can bond the connecting wire to the bonding surface in different ways.

Furthermore, the flexible transparent film has good light transmittance, so when the connection line is made of a material with good light transmittance, the touch panel can also omit the shielding layer to achieve a borderless design. Similarly, in the example where the connecting wires directly extend to the side of the substrate, if the substrate and the connecting wires are made of a material with good light transmission, the touch panel can also omit the shielding layer to achieve a borderless design.

Claims (21)

1. a contact panel, is characterized in that, comprising:

Substrate, comprising:

Principal plane, this principal plane has active region and the non-active district around this active region;

Flexible circuit board, has composition surface, and wherein this composition surface is parallel to each other with this principal plane is non-; And

Touch-control sensing element, comprising:

Multiple electrode patterns, are positioned at this active region; And

Many connecting lines, be connected between those electrode patterns and this flexible circuit board to be electrically connected those electrode patterns and this flexible circuit board, those at least part of connecting lines are positioned at this non-active district, and wherein those connecting lines are connected in this composition surface of this flexible circuit board.

2. contact panel according to claim 1, is characterized in that, also comprises:

Pliability transparent membrane, have via bending that one first district is connected in this principal plane and a Second Region is connected in this composition surface, and respectively this connecting line comprises a Part I connected to one another and a Part II, wherein those Part I are configured on this principal plane of this substrate, those Part II are configured on this pliability transparent membrane, and those Part II connect this Part I and connect this flexible circuit board in this Second Region in the junction of this firstth district and Second Region, and this composition surface not with the overlapping laminating of this principal plane.

3. contact panel according to claim 1, it is characterized in that, wherein this substrate is a pliability transparent membrane, this pliability transparent membrane comprises a base material portion connected to one another and a first fold turn of bilge, this base material portion has this principal plane, and this pliability transparent membrane makes not parallel this principal plane of this first fold turn of bilge and is connected in this composition surface through bending, those connecting lines extend to this first fold turn of bilge to be electrically connected on this flexible circuit board, wherein this composition surface not with the overlapping laminating of this principal plane.

4. contact panel according to claim 3, is characterized in that, wherein this base material portion and this first fold turn of bilge are formed in one, and the width of this base material portion is same as the width of this first fold turn of bilge.

5. contact panel according to claim 3, is characterized in that, wherein the width of this base material portion is greater than the width of this first fold turn of bilge.

6. contact panel according to claim 4, is characterized in that, wherein the dispersion of distribution W1 of this connecting line on this first fold turn of bilge is less than the width W 2 of this base material portion.

7. contact panel according to claim 4, is characterized in that, wherein the pass of the width W 2 of the dispersion of distribution W1 of this connecting line on this first fold turn of bilge and this base material portion is W1< (1/2) W2.

8. contact panel according to claim 3, it is characterized in that, wherein this pliability transparent membrane also comprises the second bending part, this first fold turn of bilge and this second bending part are connected in the not homonymy of this base material portion, this pliability transparent membrane make through bending this first fold turn of bilge and this second bending part all not parallel this principal plane to be connected in this flexible circuit board, wherein those electrode patterns of a part are electrically connected on this flexible circuit board via the part that extends to this first fold turn of bilge in those connecting lines, and wherein those electrode patterns of another part are electrically connected on this flexible circuit board via the part that extends to this second bending part in those connecting lines.

9. contact panel according to claim 8, it is characterized in that, wherein this composition surface of this flexible circuit board comprises the first composition surface and the second composition surface, this first composition surface and this second composition surface are parallel to respectively this first fold turn of bilge and this second bending part, and the normal direction on this first composition surface intersects at the normal direction on this second composition surface.

10. contact panel according to claim 8, is characterized in that, wherein the width of this base material portion is same as the width of this first fold turn of bilge, and the length of this base material portion is same as the length of this second bending part.

11. contact panels according to claim 10, it is characterized in that, wherein the width of this base material portion is greater than the width of this first fold turn of bilge, and the length of this base material portion are greater than the length of this second bending part.

12. contact panels according to claim 10, it is characterized in that, the dispersion of distribution W1 that wherein extends to the part of this first fold turn of bilge in those connecting lines is less than the width W 2 of this base material portion, and the dispersion of distribution W4 that extends to the part of this second bending part in those connecting lines is less than the length W5 of this base material portion.

13. contact panels according to claim 10, it is characterized in that, wherein in those connecting lines, extend to the dispersion of distribution W1 of part of this first fold turn of bilge and the pass of the width W 2 of this base material portion is W1< (1/2) W2, and in those connecting lines, extend to the dispersion of distribution W4 of part of this second bending part and the pass of the length W5 of this base material portion is W4< (1/2) W5.

14. contact panels according to claim 9, is characterized in that, wherein this substrate comprises:

At least one side, is connected in this principal plane and is parallel to this first composition surface, and this flexible circuit board is engaged in this side, and those connecting lines extend on this side by this non-active district, to be electrically connected those electrode patterns and this flexible circuit board.

15. contact panels according to claim 1, it is characterized in that, wherein those electrode patterns comprise multiple the first electrode parts, multiple the second electrode parts, many the first connecting portions and many second connecting portions, wherein those first connecting portions connect those first electrode parts to form many first electrode serials along a first direction, and those second connecting portions connect those second electrode parts to form many second electrode serials along a second direction, wherein this first direction and those connecting lines crossing with this second direction comprise many first connecting lines that are connected in those the first electrode serials and many second connecting lines that are connected in those the second electrode serials.

16. contact panels according to claim 15, it is characterized in that, wherein this substrate is a pliability transparent membrane, this pliability transparent membrane comprises a base material portion connected to one another and a bending part, this pliability transparent membrane makes this bending part be connected with this flexible circuit board via bending, those the first electrode serials and those the first connecting lines are configured in a first surface of this pliability transparent membrane, and those the second electrode serials and those the second connecting lines are configured in a second surface of this pliability transparent membrane, and this first surface is with respect to this second surface.

17. contact panels according to claim 16, it is characterized in that, wherein this composition surface of this flexible circuit board comprises the first composition surface and the second composition surface, this second composition surface is parallel to this first composition surface, and this first composition surface and this second composition surface are configuration face-to-face, this bending part of this pliability transparent membrane is between this first composition surface and this second composition surface, those first connecting lines that wherein extend to this bending part by this first surface are electrically connected on this first composition surface, and be electrically connected on this second composition surface by those second connecting lines that this second surface extends to this bending part.

18. contact panels according to claim 1, it is characterized in that, wherein this composition surface extends to the side of this substrate, and the lateral parts of this composition surface and this substrate are overlapping, and wherein this lateral vertical is in this principal plane.

19. contact panels according to claim 1, is characterized in that, wherein the side of this composition surface and this substrate lays respectively at the both sides up and down of this principal plane place surface level.

20. contact panels according to claim 1, is characterized in that, wherein this touch-control sensing element is single-layer electrodes framework.

21. contact panels according to claim 1, is characterized in that, wherein the normal direction on this composition surface intersects at the normal direction of this principal plane.