TW201545028A - Touch panel - Google Patents

Abstract

A touch panel includes a plurality of first conductive patterns and plurality of second conductive patterns. Each of the first conductive patterns includes a plurality of first mesh units connected to each other. The second conductive patterns and the first conductive patterns are electrically insulated to each other and intersect with each other. Each of the second conductive patterns includes a plurality of second mesh units connected to each other, wherein a shape of each of the second mesh units is different from a shape of each of the first mesh units.

Description

Touch panel

The present invention relates to a panel, and more particularly to a touch panel.

With the rapid development and application of information technology, wireless mobile communication and information appliances, many information products have been transformed from traditional keyboards or mouse input devices to use for the convenience of portability, light weight and user-friendly operation. Touch the panel as an input device.

In general, touch panels are mainly classified into resistive touch panels and capacitive touch panels. Taking a capacitive touch panel as an example, a capacitive touch panel generally includes a plurality of conductive patterns arranged in a staggered manner. Considering the application of the touch panel (for example, in combination with the display panel), the material of the conductive pattern is usually made of a transparent conductive material with good light transmittance, such as indium tin oxide. However, indium is a rare metal, and its price is relatively expensive and it is easily limited by the place of production to make the material difficult to obtain.

In consideration of process cost, material availability, and conductivity, in recent years, conductive patterns have been developed in which sheet-like indium tin oxide is replaced by a grid-like metal. However, the existing grid-like metal has a regular arrangement period, and the display panel is painted. The prime array also has its own arrangement period, so it is easy to produce a Moire effect after stacking the two, which seriously affects the visual effect.

The invention provides a touch panel with good visual effects.

A touch panel of the present invention includes a plurality of first conductive patterns and a plurality of second conductive patterns. Each of the first conductive patterns includes a plurality of first grid cells connected to each other. The second conductive pattern and the first conductive pattern intersect each other and are electrically insulated from each other. Each of the second conductive patterns includes a plurality of second mesh cells connected to each other, wherein the shape of each of the second mesh cells is different from the shape of each of the first mesh cells.

In an embodiment of the invention, each of the first grid cells has a non-orthogonal shape, each second grid cell has a non-normal N-shape, and N is a positive integer greater than 3.

In an embodiment of the invention, the at least three interconnected first grid cells share a vertex, and the vertex is in one of the second grid cells.

In an embodiment of the invention, the connecting line between the adjacent two vertices of the portion is in the adjacent two second grid units in which the adjacent two vertices are located.

In an embodiment of the invention, the number of the first grid cells of the shared vertex is equal to the number of sides of the second grid cell where the vertex is located.

In an embodiment of the present invention, each of the first mesh units is divided into N sub-regions by the edge extending from the vertex, and the standard deviation of the area of the N sub-regions is σ, σ Less than or equal to 90%, σ is defined as: Where N is the number of sides of the second grid cell where the vertex is located, The average of the area of these sub-areas.

In an embodiment of the invention, the above σ is between 10% and 65%.

In an embodiment of the invention, the angle of the edge of each of the first grid elements extending from the vertex and the edge of the corresponding second grid unit is 50 degrees to 90 degrees.

In an embodiment of the invention, each of the second grid cells has exactly one vertex shared by the adjacent first grid cells, and the number of the second grid cells is equal to the number of vertices.

In an embodiment of the invention, the touch panel further includes a substrate and an insulating layer, wherein the first conductive pattern and the second conductive pattern are located on the same surface of the substrate and are respectively located on opposite sides of the insulating layer.

In an embodiment of the invention, the touch panel further includes a substrate, a cover plate, and an insulating layer, wherein the first conductive pattern, the second conductive pattern, and the insulating layer are located between the substrate and the cover, and the first conductive pattern And the second conductive patterns are respectively located on opposite sides of the insulating layer.

In an embodiment of the invention, the insulating layer is an inorganic insulating layer, an organic insulating layer, a laminated or adhesive layer of an inorganic insulating layer and an organic insulating layer.

In an embodiment of the invention, the touch panel further includes a substrate and a cover, wherein the first conductive pattern and the second conductive pattern are respectively located on the substrate On both sides, and one of the first conductive pattern and the second conductive pattern is located between the substrate and the cover.

In an embodiment of the invention, the touch panel further includes a first substrate, a cover, a first adhesive layer, a second adhesive layer, and a second substrate, wherein the first conductive pattern is disposed on the second substrate, and The second substrate is bonded to the cover through the second adhesive layer, and the second conductive pattern is disposed on the first substrate and bonded to the second substrate through the first adhesive layer.

In an embodiment of the invention, the line widths of the first grid elements and the second grid elements are respectively in the range of 0.05 micrometers to 20 micrometers.

A touch panel of the present invention includes a plurality of conductive patterns. Each of the conductive patterns includes a plurality of first grid cells and a plurality of second grid cells, and the first grid cells are electrically connected to the second grid cells, wherein the shapes of the first grid cells are non-orthogonal triangles. The shape of each of the second grid cells is a non-normal N-gon, and N is a positive integer greater than 3.

In an embodiment of the invention, the at least three first mesh units connected to each other share a vertex, and the vertex is in one of the second grid units.

In an embodiment of the invention, the connecting line between the adjacent two vertices of the portion is in the adjacent two second grid units in which the adjacent two vertices are located.

In an embodiment of the invention, the number of the first grid cells of the shared vertex is equal to the number of sides of the second grid cell where the vertex is located.

In an embodiment of the present invention, each of the first mesh units is divided into N sub-regions by the edge extending from the vertex, and the standard deviation of the area of the N sub-regions is σ, σ Less than or equal to 90%, σ is defined as: Where N is the number of sides of the second grid cell where the vertex is located, The average of the area of these sub-areas.

In an embodiment of the invention, the above σ is between 10% and 65%.

In an embodiment of the invention, the angle of the edge of each of the first grid elements extending from the vertex and the edge of the corresponding second grid unit is 50 degrees to 90 degrees.

In an embodiment of the invention, each of the second grid cells has exactly one vertex shared by the adjacent first grid cells, and the number of the second grid cells is equal to the number of vertices.

In an embodiment of the invention, the plurality of first grid units are connected to each other, and the plurality of second grid units are connected to each other.

In an embodiment of the invention, the touch panel further includes a substrate, wherein the conductive pattern is disposed on the substrate.

In an embodiment of the invention, the touch panel further includes a substrate and a cover, wherein the conductive pattern is located between the substrate and the cover.

In an embodiment of the invention, the line widths of the first grid elements and the second grid elements are respectively in the range of 0.05 micrometers to 20 micrometers.

In an embodiment of the invention, the plurality of conductive patterns of the above portion are electrically connected together in the first direction to form a plurality of second series arranged in the second direction, and the plurality of conductive patterns of the other portions Electrically connected together in the second direction to A plurality of first strings arranged in a first direction are formed, wherein the first series and the second series are electrically insulated from each other.

In an embodiment of the invention, the touch panel further includes a plurality of first connecting portions and a plurality of second connecting portions, wherein each of the second connecting portions connects the adjacent two conductive patterns in the first direction. The first connecting portions are connected in series in the second direction, and the first connecting portions and the second connecting portions are electrically insulated from each other and intersect each other.

Based on the above, the above-described embodiment of the present invention utilizes a design in which a plurality of first grid cells and a plurality of second grid cells overlap each other to improve the problem of moiré and the sparkle effect. In this way, the touch panel has a good visual effect.

The above described features and advantages of the invention will be apparent from the following description.

100, 200, 300, 400, 500, 600, 700, 800‧‧‧ touch panels

110‧‧‧Substrate

112, 152‧‧‧ substrate

114, 154‧‧‧ buried layer

120‧‧‧First conductive pattern

120A‧‧‧first series

122A, 122B, 132A, 132B‧‧‧ conductive patterns

124A‧‧‧First Connection

130A‧‧‧Second series

130‧‧‧Second conductive pattern

134A‧‧‧Second connection

140‧‧‧Insulation

140A‧‧‧Insulation pattern

150‧‧‧second substrate

A, A1, A2, A3, A4, A5, A6, A7‧‧‧ areas

AD‧‧‧Adhesive layer

AD1‧‧‧ first adhesive layer

AD2‧‧‧Second Adhesive Layer

AH‧‧‧Next layer

CG‧‧‧ cover

D1‧‧‧ first direction

D2‧‧‧ second direction

DP‧‧‧ display panel

LW1, LW2‧‧‧ line width

M1‧‧‧ first grid unit

M2‧‧‧Second grid unit

S1, S2‧‧‧ surface

SS1, SS2‧‧‧ side

T‧‧‧ vertex

X‧‧‧ Intersection

Θ‧‧‧ angle

1A is a partial cross-sectional view showing a touch display panel of a touch panel to which a first embodiment of the present invention is applied.

FIG. 1B is a partial top view of the first conductive pattern and the second conductive pattern of FIG. 1A. FIG.

1C is a partial enlarged side view of the first conductive pattern and the second conductive pattern in the area A in FIG. 1B.

1D is a first conductive pattern and a second conductive pattern in the area A in FIG. 1B Partially enlarged top view of the case.

Figure 1E is a partial enlarged top view of Figure 1D.

2 to 5B are partial cross-sectional views of five touch panels in accordance with second to sixth embodiments of the present invention.

6A is a partial cross-sectional view of a touch panel in accordance with a sixth embodiment of the present invention.

Figure 6B is a partial top plan view of the conductive pattern of Figure 6A.

7A is a partial cross-sectional view of a touch panel in accordance with a sixth embodiment of the present invention.

Figure 7B is a partial top plan view of the conductive pattern of Figure 7A.

FIG. 8 is a partial cross-sectional view of a touch panel in accordance with a seventh embodiment of the present invention.

1A is a partial cross-sectional view showing a touch display panel of a touch panel to which a first embodiment of the present invention is applied. FIG. 1B is a partial top view of the first conductive pattern and the second conductive pattern of FIG. 1A. FIG. 1C is a partial enlarged side view of the first conductive pattern and the second conductive pattern in the area A in FIG. 1B. FIG. 1D is a partially enlarged top view of the first conductive pattern and the second conductive pattern in the area A in FIG. 1B. Figure 1E is a partial enlarged top view of Figure 1D. Referring to FIGS. 1A-1E , the touch panel 100 includes a plurality of first conductive patterns 120 and a plurality of second conductive patterns 130 . The touch panel 100 can be combined with the display panel DP to form a touch display. Panel 10. In the embodiment, the touch panel 100 and the display panel DP are joined together by, for example, the layer AH, but are not limited thereto. The touch panel 100 may further include a substrate 110 to carry the first conductive pattern 120 and the second conductive pattern 130. The substrate 110 is, for example, a substrate that is independent of the display panel DP. For example, the substrate 110 is a cover lens. The cover plate may include a glass cover, a plastic cover or other hard and high mechanical strength material to form a cover plate for protecting, covering or beautifying the corresponding device. For example, the cover is, for example, a physically or chemically reinforced glass or a composite plastic substrate. The composite plastic substrate is, for example, a composite substrate of propylene carbonate (PC) and polymethylmethacrylate (PMMA), but is not limited thereto. In addition, the cover plate may be a planar shape or a curved shape, or a combination of the foregoing, such as 2.5D glass, but is not limited thereto. The cover is made of a light-transmitting material to avoid shielding the display beam from the display panel DP. For example, the cover plate can have a transmittance of more than 85%. Alternatively, an anti-smudge coating may be provided on the side of the cover facing the user. Furthermore, at least one side of the cover may be provided with a decorative layer (not shown) to shield the metal traces connected to the flexible circuit board or to shield the pads for connection with the signal transmission line.

The first conductive pattern 120 and the second conductive pattern 130 are located on the substrate 110. In the present embodiment, the first conductive pattern 120 and the second conductive pattern 130 are collectively disposed on a surface S1 of the substrate 110, but are not limited to being in direct contact with the surface S1. For example, an optical matching layer (not shown) may be further disposed between the first conductive pattern 120 and the substrate 110 and between the second conductive pattern 130 and the substrate 110 to reduce The reflectance of the first conductive pattern 120 and the second conductive pattern 130. Further, the substrate 110 of the present embodiment is a touch surface with respect to the surface S2 of the surface S1. The touch surface is relatively close to the surface of the user when the touch is performed. The touch panel 100 may further include an insulating layer 140 to electrically insulate the second conductive pattern 130 from the first conductive pattern 120 from each other. In this embodiment, the second conductive pattern 130 is disposed on the surface S1 of the substrate 110, the insulating layer 140 is disposed on the second conductive pattern 130, and the first conductive pattern 120 is disposed on the insulating layer 140. The insulating layer 140 may be an organic insulating layer, an inorganic insulating layer or a stacked layer of an organic insulating layer and an inorganic insulating layer, wherein the material of the inorganic insulating layer may be cerium oxide or nitrogen oxide, and the material of the organic insulating layer may be photosensitive. Resin or polyimide.

As shown in FIG. 1B , the first conductive patterns 120 and the second conductive patterns 130 of the present embodiment respectively have a strip-shaped conductive pattern, and are viewed from a direction perpendicular to the touch panel 100 , and the second conductive pattern is viewed from a direction perpendicular to the touch panel 100 . The first conductive patterns 120 and the first conductive patterns 120 intersect each other, but the second conductive patterns 130 and the first conductive patterns 120 are electrically insulated from each other through the insulating layer 140 disposed therebetween. In this embodiment, the second conductive pattern 130 and the first conductive pattern 120 have a plurality of intersections X, and each intersection X corresponds to one of the overlapping regions (such as the region A). Moreover, the second conductive pattern 130 and the first conductive pattern 120 overlap each other at least in the region A, that is, one of the second conductive pattern 130 and the first conductive pattern 120 is located between the substrate 110 and the other one. In the design of the present invention, the first conductive pattern 120 and the second conductive pattern 130 are a mutual capacitive structure. For example, the first conductive pattern 120 may be a driving electrode for receiving a driving signal from a controller (not shown), and the second conductive pattern Case 130 is a receiving electrode for generating a voltage or charge change information to the controller to determine whether a touch operation has occurred. In contrast, when the first conductive pattern 120 is a receiving electrode, the second conductive pattern 130 is a driving electrode.

The first conductive patterns 120 are, for example, arranged in a first direction D1 and each extend in a second direction D2, and the second conductive patterns 130 are arranged, for example, in the second direction D2 and each extend in the first direction D1. The first direction D1 and the second direction D2 intersect each other, and are, for example, perpendicular to each other, but are not limited thereto.

In another design, since the second conductive pattern 130 of the embodiment is closer to the user than the first conductive pattern 120, the width of each of the second conductive patterns 130 in the second direction D2 is compared with the first The width of the conductive pattern 120 in the first direction D1 is large, and the interval between adjacent first conductive patterns 120 is preferably 2 μm or more. In this embodiment, the first conductive pattern 120 is the driving electrode, and the second conductive pattern 130 is the receiving electrode.

The material of the first conductive pattern 120 and the second conductive pattern 130 is metal. Specifically, the material of the first conductive pattern 120 and the second conductive pattern 130 may be selected from copper, silver, aluminum, chromium, titanium, molybdenum, etc. or a stacked structure of the above materials, or an alloy of at least two of the above materials. For example, the material of the first conductive pattern 120 and the second conductive pattern 130 may be a stacked structure of three materials of molybdenum/aluminum/molybdenum. Alternatively, the material of the first conductive pattern 120 and the second conductive pattern 130 may also be a stacked structure of three materials of indium tin oxide/silver/indium tin oxide. The present invention is not intended to limit the number of layers and materials of the stack, as long as it has good electrical conductivity, and is within the scope of the present invention.

As shown in FIG. 1C, in order to improve the light transmittance of the touch panel 100, the first conductive patterns 120 include a plurality of first mesh units M1 connected to each other, and each second. The conductive pattern 130 includes a plurality of second grid cells M2 connected to each other. The line widths LW1, LW2 of the first mesh unit M1 and the second mesh unit M2, for example, fall within a range of 0.05 micrometers to 20 micrometers, respectively, and preferably fall within a range invisible to the human eye, such as falling at 0.5 micrometers. To the range of 6 microns to avoid affecting the visual effect of the touch panel 100. In order to clearly distinguish the first conductive pattern 120 from the second conductive pattern 130, the first conductive patterns 120 in FIGS. 1C to 1E are indicated by thick lines, and the second conductive patterns 130 are indicated by thin lines, but this is not used to define the second The line width LW2 of the mesh unit M2 is smaller than the line width LW1 of the first mesh unit M1, and for example, the line width LW2 may be equal to the line width LW1. In the present invention, the first mesh unit M1 and the second mesh unit M2 are preferably made of the selected metal or alloy material to achieve better electrical properties, for example, having lower impedance characteristics.

The shape of each of the second mesh units M2 is different from the shape of each of the first mesh units M1. In detail, each of the first mesh units M1 of the present embodiment has a non-normal triangle shape, and each second mesh unit M2 has a non-normal N-shape, and N is a positive integer greater than 3. As shown in FIG. 1C, each of the second conductive patterns 130 may be composed of a quadrilateral, a pentagon, a hexagon, a heptagon, and an octagonal second mesh unit M2, but the present invention is not limited thereto. In another embodiment, the second grid unit M2 of each of the second conductive patterns 130 may also be composed of only one N-sided shape, for example, only a plurality of non-normal hexagons. In addition, in other implementation structures, the shape of each of the first mesh units M1 may also be a non-normal N-sided shape. In this case, the shape of each second mesh unit M2 is Non-orthogonal triangle.

By having the first conductive pattern 120 and the second conductive pattern 130 respectively having irregular grid cells, the phenomenon of moiré caused by the regular periodic arrangement of the touch panel 100 and the display panel DP can be avoided.

In addition, as seen from a direction perpendicular to the touch panel 100 in FIG. 1A, as shown in FIG. 1D, at the intersection X of the first conductive pattern 120 and the second conductive pattern 130, a plurality of first grid units M1 and In a case where the plurality of second mesh units M2 are overlapped with each other, at least three first mesh units M1 connected to each other share a vertex T (only regions A1, A2, A3, A4 are illustrated in FIG. 1D). The vertex T) in A5, each vertex T is in one of the second grid cells M2, and each of the second grid cells M2 has a vertex T shared by the first grid cells M1, that is, the first The number of two grid cells M2 is equal to the number of vertices T. In this embodiment, the aperture ratio of the polygon mesh unit (including the first mesh unit M1 and the second mesh unit M2) at which the intersection X is homogenized is adjacent to each of the second mesh units M2. A vertex T shared by the first grid unit M1. Further, the number of the first mesh units M1 sharing the vertex T is equal to the number of sides of the second mesh unit M2 where the vertex T is located. The areas A1, A2, A3, A4, and A5 of FIG. 1D respectively show the case where the number of the first mesh units M1 sharing the vertex T is 4, 5, 6, 7, and 8. The number of the first mesh unit M1 in the area A1, the area A2, the area A3, the area A4, and the area A5 is 4, 5, 6, 7, 8, respectively, and the side of the second mesh unit M2 where the vertex T is located The numbers are also 4, 5, 6, 7, and 8, respectively. As a result, although the first conductive pattern 120 and the second conductive pattern 130 are both composed of irregular grid cells (referring to the first grid unit M1 and the second grid unit M2), adjacent to the vertical projection The aperture ratio of the grid cells can be substantially uniform. That is to say, the edges extending from a vertex T shared by the plurality of first mesh units M1 divide the second mesh unit M2 corresponding to the vertex T into a plurality of sub-areas having similar areas, if the first grid The unit M1 and the second grid unit M2 are in different layers, and the sub-areas are formed by the side of the first grid unit M1 and the side of the second grid unit M2 in a direction perpendicular to the projection viewing angle of the touch panel; If the first mesh unit M1 and the second mesh unit M2 are in the same layer, the sub-regions are formed by the side of the first mesh unit M1 being connected to the edge of the second mesh unit M2. One of the embodiments is shown in FIGS. 1D and 1E, which is applicable to the above case, wherein the second mesh unit M2 of this embodiment is an irregular octagon composed of eight sides SS2, and the eight sides SS2 will be The sides SS1 extending from the vertex T intersect or the projected viewing angle directions intersect to divide the second mesh unit M2 into eight sub-areas A _{i having} similar areas, and the sub-areas may have different areas from each other. The size difference of the sub-areas is determined by the normalized deviation σ, which is defined as: Here, N is the number of sides of the second mesh unit M2 where the vertex T is located, and The average of the area of these sub-areas, The area of the second grid cell M2 defined as the vertex T is divided by the number of sides N thereof. For different second grid cells M2 (if the shapes are different or the areas are different), the standard deviation σ of the area of the sub-regions will also be different. Here, the standard deviation σ is less than or equal to 90%, but the standard deviation σ is preferably between 10% and 65%. Therefore, when the irregular grid cells are stacked on each other, the large-area sub-region and the small-area sub-region are prevented from affecting the visual quality of the touch display panel 10 due to the concentration of the partition, and the sand is further improved. The dot effect, and effects on other visual effects such as color shift and uneven brightness, can also be improved.

In the above design, the side SS1 of each first mesh unit M1 connected to the vertex T corresponds to one side SS2 of the second mesh unit M2 where the vertex T is located, and is partially connected between the adjacent two vertex T The connecting line segment (such as the edge SS1) falls within the adjacent two second grid cells M2 in which the adjacent two vertices T are located, such that the side SS1 between the two adjacent vertices T connected to the first mesh unit M1 intersects The side SS2 shared by the adjacent two second grid cells M2 where the adjacent two vertices T are located. In the present embodiment, the angle θ between the side SS1 of each of the first mesh units M1 extending from the vertex T and the side SS2 of the corresponding second mesh unit M2 is 50 degrees to 90 degrees. The angle θ referred to herein includes the angle θ (as shown by the area A6 in FIG. 1E) when the edge SS1 of the first mesh unit M1 and the vertex T connected to the edge SS2 of the corresponding second mesh unit M2 intersects. And when the side SS1 of the first mesh unit M1 and the vertex T are not intersected with the side SS2 of the corresponding second mesh unit M2, the extension line of the side SS2 of the second mesh unit M2 and the first mesh unit M1 are The angle θ sandwiched by the edge SS1 of the vertex T is connected (as shown by the area A7 in Fig. 1E).

It should be noted that FIGS. 1A to 1E only schematically illustrate an embodiment of the touch panel of the present invention, but the present invention is not limited to the above. Other embodiments of the touch panel of the present invention will be described below with reference to FIGS. 2 to 5B. 2 to 5B are partial cross-sectional views of five touch panels in accordance with second to sixth embodiments of the present invention. It should be noted that the ratios of FIG. 2 to FIG. 5B are only schematic and are not intended to limit the present. invention. In practical applications, the maximum line spacing of each first grid unit M1 of each first conductive pattern 120 and the maximum line spacing of each second grid unit M2 of each second conductive pattern 130 may be between 100 micrometers and 200 micrometers. . Referring to FIG. 2 , the touch panel 200 is substantially the same as the touch panel 100 in FIG. 1A , and the same components are denoted by the same reference numerals, and the design, relative configuration, and relationship of the components are not described herein. The effect.

The main difference is that the touch panel 200 of the present embodiment further includes a cover CG and an adhesive layer AD, and the cover CG is bonded to the substrate 110 through the adhesive layer AD, wherein the first conductive pattern 120 after the bonding The two conductive patterns 130 and the insulating layer 140 are located between the cap plate CG and the substrate 110. In the embodiment, the substrate 110 serves as a carrier substrate of the first conductive pattern 120 and the second conductive pattern 130. The carrier substrate may be a substrate independent of the display panel or an element substrate integrated in the display panel. The component substrate integrated in the display panel is, for example, a color filter substrate of a liquid crystal display panel or a package cover of an organic light emitting diode display panel, but is not limited thereto. In addition, the carrier substrate may be a glass substrate, a plastic substrate or a plastic film. The plastic film has a thickness of, for example, 100 μm to 200 μm. Here, the carrier substrate is not a cover plate as shown in FIG. 1A, and the substrate 110 of this embodiment may be a substrate that does not need to be strengthened. It is worth mentioning that the plastic substrate/film may be a substrate such as propylene carbonate (PC), polymethylmethacrylate (PMMA) or polyimide or a composite substrate/film as described above. , but not limited to this.

Referring to FIG. 3 , the touch panel 300 is substantially the same as the touch panel of FIG. 2 . 200, and the same components are denoted by the same reference numerals, and the design forms, relative arrangement relationships, and effects thereof of these components will not be described herein. The main difference is that the first conductive pattern 120 and the second conductive pattern 130 of the embodiment are respectively disposed on the cover CG and the substrate 110, and the cover CG is bonded to the substrate 110 through the adhesive layer AD, wherein the bonded A conductive pattern 120 and a second conductive pattern 130 are located between the cover CG and the substrate 110. In the present embodiment, the adhesive layer AD provides an insulating effect in addition to the effect of bonding. In other words, the present embodiment can omit the arrangement of the insulating layer 140 in FIG. 2 compared to the touch panels 100, 200.

Referring to FIG. 4 , the touch panel 400 is substantially the same as the touch panel 200 in FIG. 2 , and the same components are denoted by the same reference numerals, and the design forms, relative configuration relationships, and the likes of the components are not described herein. The effect. The main difference is that the first conductive pattern 120 and the second conductive pattern 130 of the embodiment are respectively disposed on opposite surfaces of the substrate 110, and the cover CG is bonded to the substrate 110 through the adhesive layer AD, wherein the bonded A conductive pattern 120 is located between the cover CG and the substrate 110. That is to say, the substrate 110 of the present embodiment provides an insulating effect in addition to the effect of carrying the load. Therefore, the embodiment can also omit the arrangement of the insulating layer 140 in FIG. 2 compared to the touch panels 100 and 200. Moreover, the substrate 110 of the present embodiment may be the carrier substrate of FIG. 2, and details are not described herein.

Referring to FIG. 5A , the touch panel 500 is substantially the same as the touch panel 100 of FIG. 1 , and the same components are denoted by the same reference numerals, and the design forms, relative configuration relationships, and the likes of the components are not described herein. The effect. The main difference is that the touch panel 500 of the embodiment further includes a first adhesive layer AD1 and a second adhesive layer. The layer AD2, a cover CG and a second substrate 150. The first conductive pattern 120 and the second conductive pattern 130 are respectively disposed on the substrate 110 and the second substrate 150, and the substrate 110 and the second substrate 150 are bonded through the first adhesive layer AD1, wherein the bonded first conductive pattern 120 and The second conductive pattern 130 is located between the substrate 110 and the second substrate 150. In addition, the second substrate 150 is bonded to the cap plate CG through the second adhesive layer AD2, and the bonded second substrate 150 is located between the first conductive pattern 120 and the cap plate CG. In the embodiment, the substrate 110 and the second substrate 150 serve as the carrier substrate of the second conductive pattern 130 and the first conductive pattern 120, respectively. To thin the overall thickness of the touch panel 500, the substrate 110 and the second substrate 150 are, for example, plastic films each having a thickness of between 100 micrometers and 200 micrometers. The first adhesive layer AD1 provides an insulating effect in addition to the bonding effect. In other words, the present embodiment can omit the arrangement of the insulating layer 140 in FIG. 2 compared to the touch panels 100, 200.

In still another embodiment, the first conductive pattern 120 and the second conductive pattern 130 may all face a display panel, that is, the second conductive pattern 130 of FIG. 5A is disposed on the other surface of the substrate 110. Alternatively, the first conductive pattern 120 and the second conductive pattern 130 may also face the user, that is, the first conductive pattern 120 of FIG. 5A is disposed on the other surface of the second substrate 150.

Referring to FIG. 5B , the touch panel 500A is substantially the same as the touch panel 500 in FIG. 5A , and the same components are denoted by the same reference numerals, and the design forms, relative configuration relationships, and the likes of the components are not described herein. The effect. The main difference is that the first conductive pattern 120 is buried in the second substrate 150A, and the second conductive pattern 130 is buried in the substrate 110A. In this embodiment, the substrate 110A includes, for example, a substrate 112. And a buried layer 114 disposed on the substrate 112, and the second conductive pattern 130 is buried in the buried layer 114. On the other hand, the second substrate 150A includes, for example, a substrate 152 and a buried layer 154 disposed on the substrate 152, and the first conductive pattern 120 is buried in the buried layer 154. Since the hardness of the base materials 112 and 152 is not easily molded, the buried layers 114 and 154 having a low hardness are disposed to have an ability to be easily shaped. For example, the material of the substrates 112, 152 may be a rigid material such as glass. On the other hand, the material of the buried layers 114 and 154 may be a soft material such as an ultraviolet glue, a thermosetting glue, a high molecular polymer or an organic polymer material containing a polyimide. However, the materials of the base materials 112, 152 and the buried layers 114, 154 are not limited to the above.

In another embodiment, if the buried layers 114, 154 are self-adhesive, the arrangement of the first adhesive layer AD1 in FIG. 5B may be omitted, but the first conductive pattern 120 and the second conductive pattern 130 must both face the display. The panel is disposed to avoid the problem of mutual short circuit, that is, the buried layer 114 and the second conductive pattern 130 of FIG. 5B are disposed on the other surface of the substrate 112; or, the first conductive pattern 120 and the second conductive pattern 130 It is also possible to face both the user, that is, the buried layer 154 of FIG. 5B and the first conductive pattern 120 are disposed on the other surface of the substrate 152. In addition, if the substrates 112, 152 themselves are made of a soft material, that is, the substrates 112, 152 themselves may form a plurality of depressions as shown in FIG. 5B, the arrangement of the buried layers 114, 154 may be omitted.

In the above embodiment, the first conductive pattern is composed of a plurality of first grid cells to form a strip-shaped conductive pattern, and the second conductive pattern is composed of a plurality of second grid cells to form a strip-shaped conductive pattern, but the invention is not limited thereto. . 6A is a partial cross-sectional view of a touch panel in accordance with a sixth embodiment of the present invention. Figure 6B is a conductive diagram of Figure 6A A partial top view of the case. Referring to FIG. 6A and FIG. 6B , the touch panel 600 includes a substrate 110 and a plurality of conductive patterns 122A and 132A. The related content of the substrate 110 can be referred to the corresponding description in FIG. 1A , and details are not described herein again.

The main difference between the touch panel 600 of the present embodiment and the touch panel 100 of the embodiment of FIG. 1A to FIG. 1E is that the conductive patterns 122A and 132A of the present embodiment each include a plurality of first grid units M1 and a plurality of connected to each other. a second mesh unit M2 connected to each other, and the first mesh unit M1 of each of the conductive patterns 122A, 132A is electrically connected to the second mesh unit M2, wherein the first mesh unit M1 and the second mesh unit The related content of M2 can be referred to the description of FIG. 1C to FIG. 1E. The difference is that the first mesh unit M1 and the second mesh unit M2 in FIG. 1C to FIG. 1E belong to different conductive patterns, and the first mesh unit M1 and the second mesh unit M2 are separated from each other and electrically Insulation. In contrast, the conductive pattern 122A (or the conductive pattern 132A) of the present embodiment includes a plurality of first mesh cells M1 connected to each other and a plurality of second mesh cells M2 connected to each other, wherein the conductive patterns 122 (or The first grid unit M1 of the conductive pattern 132A) and the second grid unit M2 are located on the same layer (for example, all on the substrate 110) and intersect each other. Specifically, the first mesh unit M1 and the second mesh unit M2 in FIG. 1C to FIG. 1E are respectively located on opposite sides of the insulating layer 140 (please refer to FIG. 1A). However, the first mesh unit M1 and the second mesh unit M2 of the conductive pattern 122A of the present embodiment are located on the same layer (for example, all on the substrate 110) and intersect each other. That is, each of the conductive patterns 122A (or each of the conductive patterns 132A) is individually composed of a plurality of irregular grid cells (including the first mesh unit M1 and the second mesh unit M2). Therefore, in addition to improving the conductive pattern 122A, In addition to the sand point effect of the 132A, the rubbing phenomenon caused by the regular period arrangement of the touch panel 600 and the display panel can be avoided.

In this embodiment, the touch panel 600 further includes a plurality of first connecting portions 124A and a plurality of second connecting portions 134A, wherein each of the first connecting portions 124A connects the adjacent two conductive patterns 122A in the second direction D2. The first series of columns 120A are arranged in the first direction D1, and the second connecting portions 134A are connected in series in the first direction D1 to form a plurality of lines along the second direction D2. The second series 130A is arranged, wherein the first series 120A and the second series 130A intersect each other and are electrically insulated from each other. Specifically, the touch panel 600 further includes a plurality of island-shaped insulating patterns 140A located at the intersection X of the first series 120A and the second series 130A to electrically insulate the two, wherein the conductive patterns 122A and the conductive patterns 132A And the first connecting portion 124A is common on the substrate 110, and the second connecting portion 134A crosses the adjacent two conductive patterns 132A in the first direction D1 across the insulating pattern 140A.

In another embodiment, the insulating pattern 140A may also cover the entire surface of the substrate 110, the conductive pattern 122A, and the conductive pattern 132A, wherein a through hole is formed in the insulating pattern 140A to expose the conductive pattern 132A, and second The connecting portion 134A can also connect the adjacent two conductive patterns 132A in series in the first direction D1 through the through holes. Alternatively, as shown in FIG. 1A, the first series 120A and the second series 130A may also be located on opposite sides of the entire insulating pattern 140, respectively. It should be noted that the first series 120A and the second series 130A can also be applied to the structures of FIGS. 2 to 5 (replace the positions of the first conductive pattern 120 and the second conductive pattern 130, respectively).

Furthermore, FIG. 6B shows the first connecting portion 124A and the second line in a single line segment. The connecting portion 134A, but the present invention is not limited to the specific embodiment of the first connecting portion 124A and the second connecting portion 134A. For example, the first connecting portion 124A (or the second connecting portion 134A) may be a single line segment, a plurality of line segments or a pattern in which the conductive pattern 122A (or the conductive pattern 132A) may also be adopted, that is, the first mesh unit is included. M1 and second grid unit M2. The line segments may be straight lines, curved lines or meander lines. In addition, the materials of the first connecting portion 124A and the second connecting portion 134A may adopt materials of the first mesh unit M1 and the second mesh unit M2 to simplify the processing time and cost.

FIG. 7A is a partial cross-sectional view of a touch panel in accordance with a sixth embodiment of the present invention. FIG. Figure 7B is a partial top plan view of the conductive pattern of Figure 7A. Referring to FIG. 7A and FIG. 7B , the touch panel 700 is substantially the same as the touch panel 600 in FIGS. 6A and 6B , and the same (or similar) elements are denoted by the same (or similar) numerals, and details are not described herein again. . The main difference is that the touch panel 700 has a single layer touch sensing structure. That is to say, compared with the touch panel 600, the embodiment may omit the arrangement of the first connecting portion 124A and the second connecting portion 134A in FIG. 6B. In this embodiment, each conductive pattern 122B (or conductive pattern 132B) may include a first grid unit M1 and a second grid unit M2, that is, a design using the conductive pattern 122A (or the conductive pattern 132A) in FIG. 6B. In order to achieve the aforementioned improvement of the sand point effect and the phenomenon of moiré.

It should be noted that the embodiment does not need to define the outer shape of the conductive pattern 122B and the conductive pattern 132B or the relative arrangement relationship between the two. Any single layer touch sensing structure is within the scope of the present invention. For example, in another embodiment, the outer shape of the conductive pattern 122B and the conductive pattern 132B may be a triangle, respectively, and the conductive pattern 122B and the conductive patterns 132B are alternately arranged in one direction.

FIG. 8 is a partial cross-sectional view of a touch panel in accordance with a seventh embodiment of the present invention. Referring to FIG. 8 , the touch panel 800 is substantially the same as the touch panel 700 in FIG. 7A , and the same components are denoted by the same reference numerals and will not be described again. The main difference is that the touch panel 800 further includes a cover CG and an adhesive layer AD, and the cover CG is bonded to the substrate 110 through the adhesive layer AD, wherein the conductive pattern 122B and the conductive pattern 132B are bonded (shown FIG. 7B) is located between the cover CG and the substrate 110. In the present embodiment, the substrate 110 serves as a carrier substrate for the conductive patterns 122B, 132B. For a description of the carrier substrate, reference may be made to FIG. 2, and details are not described herein again.

In summary, the above embodiment of the present invention utilizes a design in which a plurality of first mesh units M1 and a plurality of second mesh units M2 are superposed on each other to improve the problem of moiré and the effect of the sand point. In this way, the touch panel has a good visual effect.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention, and any one of ordinary skill in the art can make some changes and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended claims.

A1, A2, A3, A4, A5‧‧‧ areas

M1‧‧‧ first grid unit

M2‧‧‧Second grid unit

T‧‧‧ vertex

Claims (29)

A touch panel includes: a plurality of first conductive patterns, each of the first conductive patterns includes a plurality of first grid cells connected to each other; and a plurality of second conductive patterns, the second conductive patterns and the plurality of A conductive pattern is electrically insulated from each other and intersects each other, each of the second conductive patterns includes a plurality of second grid cells connected to each other, and a shape of each of the second grid cells is different from a shape of each of the first grid cells . The touch panel of claim 1, wherein each of the first grid cells has a non-normal triangle shape, and each of the second grid cells has a non-normal N-shape, and N is greater than 3. A positive integer. The touch panel of claim 2, wherein at least three of the first grid cells connected to each other share a vertex, and the vertex is located in one of the second grid cells. The touch panel of claim 3, wherein a portion of the connecting line between two adjacent vertices is located in two adjacent second grid units in which the adjacent two vertices are located. The touch panel of claim 3, wherein the number of the first grid cells sharing the vertex is equal to the number of sides of the second grid cell where the vertex is located. The touch panel of claim 5, wherein each of the first grid cells is divided by the edge of the vertex to divide the second grid unit in which the vertex is located into N sub-regions, and N sub-regions The standard deviation of the area is σ, σ is less than or equal to 90%, and σ is defined as: Where N is the number of sides of the second grid cell where the vertex is located, Is the average of the areas of the sub-areas. The touch panel of claim 6, wherein σ is between 10% and 65%. The touch panel of claim 5, wherein an angle of each side of the first grid unit extending from the vertex and an edge of the corresponding second grid unit is 50 degrees to 90 degrees. The touch panel of claim 2, wherein each of the second grid cells has a vertex shared by the adjacent first grid cells, and the number of the second grid cells is equal to The number of vertices. The touch panel of claim 1, further comprising a substrate and an insulating layer, wherein the first conductive patterns and the second conductive patterns are located on the same surface of the substrate, and are respectively located in the insulating layer The opposite sides of the layer. The touch panel of claim 1, further comprising a substrate, a cover, and an insulating layer, wherein the first conductive patterns, the second conductive patterns, and the insulating layer are located on the substrate The first conductive patterns and the second conductive patterns are respectively located on opposite sides of the insulating layer. The touch panel of claim 10 or 11, wherein the The insulating layer is an inorganic insulating layer, an organic insulating layer, a laminated or adhesive layer of an inorganic insulating layer and an organic insulating layer. The touch panel of claim 1, further comprising a substrate and a cover, wherein the first conductive patterns and the second conductive patterns are respectively located on opposite sides of the substrate, and the One of the conductive pattern and the second conductive patterns is located between the substrate and the cover. The touch panel of claim 1, further comprising a first substrate, a cover, a first adhesive layer, a second adhesive layer, and a second substrate, wherein the first conductive patterns are disposed On the second substrate, the second substrate is bonded to the cover through the second adhesive layer. The second conductive patterns are disposed on the first substrate and are bonded to the second substrate through the first adhesive layer. The touch panel of claim 1, wherein a line width of each of the first grid unit and each of the second grid units falls within a range of 0.05 micrometers to 20 micrometers. A touch panel includes: a plurality of conductive patterns, each of the conductive patterns includes a plurality of first grid cells and a plurality of second grid cells, wherein the first grid cells are electrically connected to the second grids a unit, wherein each of the first grid cells has a shape that is non-orthogonal, each of the second grid cells has a non-normal N-shape, and N is a positive integer greater than 3. The touch panel of claim 16, wherein at least three of the first grid cells connected to each other share a vertex, and the vertex is located in one of the second grid cells. The touch panel of claim 17, wherein the connecting line between the adjacent two vertices is in the adjacent two second grid units in which the adjacent two vertices are located. The touch panel of claim 17, wherein the number of the first grid cells sharing the vertex is equal to the number of sides of the second grid cell where the vertex is located. The touch panel of claim 19, wherein each of the first mesh unit is divided by the vertex to divide the second grid unit in which the vertex is located into N sub-regions, and N sub-regions The standard deviation of the area is σ, σ is less than or equal to 90%, and σ is defined as: Where N is the number of sides of the second grid cell where the vertex is located, Is the average of the areas of the sub-areas. The touch panel of claim 20, wherein σ is between 10% and 65%. The touch panel of claim 17, wherein an angle of each side of the first grid unit extending from the vertex and an edge of the corresponding second grid unit is 50 degrees to 90 degrees. The touch panel of claim 16, wherein each of the second grid cells has a vertex shared by the adjacent first grid cells, and the number of the second grid cells is equal to The number of vertices. The touch panel of claim 16, wherein the first grid cells of each of the conductive patterns are connected to each other, and the second grid cells of each of the conductive patterns are connected to each other. The touch panel of claim 16, further comprising a substrate, wherein the conductive patterns are disposed on the substrate. The touch panel of claim 16, further comprising a substrate and a cover, wherein the conductive patterns are located between the substrate and the cover. The touch panel of claim 16, wherein a line width of each of the first grid unit and each of the second grid units falls within a range of 0.05 micrometers to 20 micrometers. The touch panel of claim 16, wherein a plurality of the plurality of conductive patterns are electrically connected together in a first direction to form a plurality of second strings arranged along a second direction. And the plurality of the conductive patterns of the other portions are electrically connected together in the second direction to form a plurality of first series arranged along the first direction, wherein the first series and the second strings The columns are electrically insulated from each other. The touch panel of claim 28, further comprising a plurality of first connecting portions and a plurality of second connecting portions, wherein each of the second connecting portions is adjacent to the two conductive patterns along the first direction And the first connecting portions are connected in series along the second direction, and the first connecting portions and the second connecting portions are electrically insulated from each other and intersect each other.