TW201621566A - Touch panel - Google Patents

Abstract

The present invention relates to a touch panel. The touch panel includes a cover glass having a plane portion and a non-plane portion surrounded the plane portion and a touch sensor layer. The touch sensor layer includes a first touch sensor corresponding to the plane portion and a second touch sensor corresponding to the non-plane portion. And a ductility of the second touch sensor is higher than a ductility of the first touch sensor.

Description

Touch panel

The invention relates to a touch panel, in particular to a non-planar touch panel.

The existing touch panels are all planar structures, and the electrode structure of the touch panel is usually made of indium tin oxide (ITO). Due to the poor bending and ductility of the ITO, the design of the non-planar touch panel cannot be realized.

In view of this, it is necessary to provide a non-planar touch panel and a touch display device.

A touch panel comprising:

a cover plate comprising a flat portion and a non-planar portion located around the flat portion;

a touch electrode layer, the touch electrode layer includes a first touch electrode corresponding to the planar portion and a second touch electrode corresponding to the non-planar portion, and the second touch electrode is more ductile than the first touch electrode Highly malleable.

Compared with the prior art, the second touch electrode of the non-planar portion of the touch panel of the present invention has higher ductility than the first touch electrode of the planar portion, thereby obtaining a non-planar touch panel with good touch performance.

1 is a perspective exploded view of a touch panel of the present invention.

2 is a schematic view showing the assembly of the touch panel shown in FIG. 1.

3 is a cross-sectional view of the touch panel of FIG. 1 taken along line III-III.

4 is a schematic plan view showing the structure of the touch electrode layer shown in FIG. 1.

FIG. 5 is a side view of the touch panel shown in FIG. 1. FIG.

Please refer to FIG. 1 , FIG. 2 and FIG. 3 . FIG. 1 and FIG. 2 are schematic exploded and assembled views of the touch panel 10 of the present invention, FIG. 2 is a schematic view of the assembled touch panel of FIG. 1 , and FIG. A schematic cross-sectional view of the touch panel 10 along line III-III is shown. FIG. 4 is a schematic plan view of the touch electrode layer 130 shown in FIG. The touch panel 10 includes a cover 110 and a touch electrode layer 130 .

The touch electrode layer 130 is directly formed on the cover plate 110. It can be understood that, in a modified embodiment, the touch electrode layer 130 is attached to one side of the cover 110 through a colloid layer 120.

The cover plate 110 includes a central planar portion 112 and a non-planar portion 114 disposed along an edge of the planar portion 112. In the present embodiment, the non-planar portion 114 is the same material as the planar portion 112, and the non-planar portion has an arcuate cross section. In other embodiments, the non-planar portion 114 may be provided with an ink-forming masking layer.

The touch electrode layer 130 includes a main touch region 131 corresponding to the planar portion 112 and an edge touch region 133 corresponding to the non-planar portion 114. The main touch area 131 is generally a transparent touchable area, and includes a first touch electrode 135. The edge touch area 133 includes a second touch electrode 137. The first touch electrode 135 is configured to sense touch information in the main touch area 131. The second touch electrode 137 is configured to sense touch information in the edge touch area 133. The second touch electrode 137 is electrically connected to the first touch electrode 135 adjacent to an end of the first touch electrode 135 .

The first touch electrode 135 includes a plurality of first transparent conductive lines 1351 and a plurality of second transparent conductive lines 1353 insulated from the plurality of first transparent conductive lines 1351. The first transparent conductive line 1351 and the second transparent conductive line 1353 define a plurality of touch sensing capacitor structures. The first transparent conductive line 1351 and the second transparent conductive line 1353 are both diamond-shaped tiles. The first transparent conductive lines 1351 are arranged in parallel in a first direction, and the second transparent conductive lines 1353 are arranged in parallel in a second direction. Specifically, each of the first transparent conductive lines 1351 is formed by a plurality of first conductive units 1354 and a first bridge portion 1355 disposed between two adjacent first conductive units 1354; each second transparent conductive line 1353 is formed by connecting a plurality of second conductive units 1356 and a second bridge portion 1357 disposed between two adjacent second conductive units 1356. The first conductive unit 1354 and the second conductive unit 1356 are all diamond-shaped tiles of the same size.

The second touch electrode 137 includes a plurality of third conductive units 1371 defining a plurality of touch sensing capacitors to sense touch information of the non-planar portion 114 of the cover plate 110 . The third conductive unit 1371 is a diamond-shaped tile pattern or a metal grid structure. The second touch electrode 137 can be electrically connected to the first transparent conductive line 1351 to form a conductive line for sensing a touch action.

The first touch electrode 135 can be composed of a transparent conductive material, and includes indium tin oxide (ITO), indium zinc oxide (IZO), cadmium tin oxide (CTO), and the like. The second touch electrode 137 is made of a conductive metal material having a ductility higher than that of the transparent conductive material, and the conductive metal material includes silver, copper, or the like. In this embodiment, the size of the first conductive unit 1354 and the second conductive unit 1356 is larger than the size of the third conductive unit 1371. The curvature of the second touch electrode 137 is the same as the curvature of the non-planar portion 114.

The touch electrode layer 130 further includes a lead structure 139. The lead structure 139 is configured to transmit touch information sensed by the touch electrode layer 130 to the driving wafer 160 . The wire structure 139 is disposed along a side of the second touch electrode 137 away from the first touch electrode 135 and electrically connected to the second touch electrode 137 . In the embodiment, the lead structure 139 is the same material as the second touch electrode 137.

Please refer to FIG. 5 together. FIG. 5 is a side view of the touch display device 10 of FIG. The outer surface of the non-planar portion 114 is provided with a graphic or text indicating that the area is a virtual function key 170. In the present embodiment, the virtual function key 170 is a figure or a character formed on the non-planar portion inside the cover plate 110 by using an ink material. Correspondingly, when the graphic or scheme is touched, the second touch electrode 137 senses a corresponding signal and transmits the same to the driving wafer 160 via the lead structure 139 to perform a corresponding function. The virtual function key can be a volume control button, a power button, and the like.

The second touch electrode of the non-planar portion of the touch panel of the present invention has higher ductility than the first touch electrode of the planar portion, thereby obtaining a non-planar touch panel with good touch performance.

As described above, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application.

10‧‧‧Touch panel

110‧‧‧ cover

130‧‧‧Touch electrode layer

112‧‧‧Flat Department

114‧‧‧Non-planar parts

131‧‧‧Main touch area

133‧‧‧Edge touch zone

135‧‧‧First touch electrode

137‧‧‧Second touch electrode

1351‧‧‧First transparent conductive line

1353‧‧‧Second transparent conductive line

1354‧‧‧First Conductive Unit

1355‧‧‧First Bridge

1356‧‧‧Second conductive unit

1357‧‧‧Second Bridge

1371‧‧‧ Third Conductive Unit

139‧‧‧ lead structure

160‧‧‧Drive chip

no

10‧‧‧Touch panel

110‧‧‧ cover

130‧‧‧Touch electrode layer

112‧‧‧Flat Department

114‧‧‧Non-planar parts

135‧‧‧First touch electrode

137‧‧‧Second touch electrode

Claims (15)

A touch panel comprising:
a cover plate comprising a flat portion and a non-planar portion located around the flat portion;
a touch electrode layer, the touch electrode layer includes a first touch electrode corresponding to the planar portion and a second touch electrode corresponding to the non-planar portion, and the second touch electrode is more ductile than the first touch electrode Highly malleable. The touch panel of claim 1, wherein the second touch electrode material has higher ductility than the first touch electrode material. The touch panel of claim 2, wherein the material of the first touch electrode is indium tin oxide, and the material of the second touch electrode is a conductive metal having higher ductility than indium tin oxide. The touch panel of claim 3, wherein the second touch electrode is made of silver or copper. The touch panel of claim 2, wherein the material of the first touch electrode is a transparent conductive material, and the material of the second touch electrode is a non-transparent conductive material. The touch panel of any one of the preceding claims, wherein the touch panel further includes a lead structure electrically connected to the second touch electrode, the material of the lead structure and the second touch electrode The materials are the same. The touch panel of claim 6, wherein the lead structure is disposed along a side of the second touch electrode away from the first touch electrode. The touch panel of claim 6 , wherein an end of the second touch electrode adjacent to the first touch electrode is electrically connected to the first touch electrode. The touch panel of claim 1, wherein the cover is integrated with the touch electrode layer, and the curvature of the non-planar portion is the same as the curvature of the second touch electrode. The touch panel of claim 1, wherein the touch panel is provided with a virtual function key at a position corresponding to the second touch electrode. The touch panel of claim 1, wherein the first touch electrode comprises a plurality of first transparent conductive lines and a plurality of second transparent conductive lines, the plurality of first transparent conductive lines and the plurality of second conductive lines The transparent conductive line forms a capacitive structure. The second sensing line forms a capacitor structure to sense touch information. The touch panel of claim 10, wherein each of the first transparent conductive lines comprises a plurality of first conductive units and a plurality of first bridges; each of the second transparent conductive lines includes a plurality of second conductive units and a plurality of Second bridge. The touch panel of claim 12, wherein the second touch electrode comprises a plurality of third conductive units, the plurality of third conductive units defining a plurality of touch sensing capacitors for sensing a non-planar portion of the cover information. The touch panel of claim 13, wherein the third conductive unit is a diamond tile pattern. The touch panel of claim 12, wherein the third conductive unit has a size smaller than a size of the first and second conductive units.