TW201443719A - Touch panel and touch display panel - Google Patents

Abstract

A touch panel and a touch display panel are provided. The touch panel includes a substrate, first touch electrode series, second touch electrode series, auxiliary electrodes and third bridge lines. The first touch electrode series on the substrate include first touch electrodes and first bridge lines electrically connecting the first touch electrodes. The second touch electrode series on the substrate include second touch electrodes and second bridge lines electrically connecting the second touch electrodes. An isolation region is between the first touch electrodes and the second touch electrodes. The auxiliary electrodes on the substrate are disposed in the isolation region, wherein the auxiliary electrodes are separated from each other. The third bridge lines are disposed between the auxiliary electrodes so as to electrically connect the auxiliary electrodes. The auxiliary electrodes and the third bridge lines are electrically connected to a grounding voltage.

Description

Touch panel and touch display panel

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

In recent years, with the rapid development and application of information technology, wireless mobile communication and information appliances, many information products have been input devices such as traditional keyboards or mice for the purpose of being more convenient, lighter and more humanized. The switch uses a touch panel as an input device, and the touch display panel is the most popular product today. The existing touch panels can be roughly classified into a capacitive type, a resistive type, and a photosensitive type, and a capacitive touch panel is a mainstream product. Since the existing touch panels are mostly limited in touch sensitivity, how to improve the design of the touch electrode layer in the touch area of the touch panel and further improve the touch sensitivity, which is an urgent need for the touch panel to be overcome. A major topic.

The invention provides a touch panel and a touch display panel, which have better touch sensitivity.

The present invention provides a touch panel including a substrate, a plurality of first touch electrode serials, a plurality of second touch electrode serials, a plurality of auxiliary electrodes, and a plurality of third bridge wires. The substrate has a surface. A plurality of first touch electrode serials are disposed on a surface of the substrate, wherein each of the first touch electrode serials includes a plurality of first touch electrodes and a plurality of first bridge wires electrically connecting the first touch electrodes . The plurality of second touch electrode serials are disposed on the surface of the substrate, wherein each of the second touch electrode serials includes a plurality of second touch electrodes and a plurality of second bridge wires electrically connecting the second touch electrodes . There is an isolation region between the first touch electrode and the second touch electrode. A plurality of auxiliary electrodes are located on the surface of the substrate and disposed in the isolation region, wherein the auxiliary electrodes are separated from each other. A plurality of third bridge wires are located between the auxiliary electrodes to electrically connect the auxiliary electrodes together, wherein the auxiliary electrodes and the third bridge wires are electrically connected to the ground voltage.

The present invention further provides a touch display panel including a display panel and a touch electrode layer. The touch electrode layer is located on an outer surface of the display panel or in the display panel. The touch electrode layer includes a plurality of first touch electrode serials, a plurality of second touch electrode serials, a plurality of auxiliary electrodes, and a plurality of third bridge lines. Each of the first touch electrode serials includes a plurality of first touch electrodes and a plurality of first bridge wires electrically connecting the first touch electrodes. Each of the second touch electrode serials includes a plurality of second touch electrodes and a plurality of second bridge wires electrically connecting the second touch electrodes. There is an isolation region between the first touch electrode and the second touch electrode. A plurality of auxiliary electrodes are disposed in the isolation region, wherein the auxiliary electrodes are separated from each other. A plurality of third bridge wires are located between the auxiliary electrodes to electrically connect the auxiliary electrodes together, wherein the auxiliary electrodes and the third bridge wires are electrically connected to the ground voltage.

In the touch panel and the touch display panel of the present invention, the touch electrode layer of the touch area of the touch panel includes an auxiliary electrode and a bridge wire electrically connecting the auxiliary electrode, wherein the auxiliary electrode and the bridge wire It is further electrically connected to the ground voltage. Therefore, the touch electrode layer of the touch panel of the touch panel of the present invention can reduce the capacitance value before the touch and increase the capacitance value before and after the touch, thereby improving the touch area of the touch panel. Control sensitivity.

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

10‧‧‧Touch panel

20‧‧‧ display panel

20a, 100a‧‧‧ surface

22‧‧‧ element substrate

24‧‧‧ opposite substrate

26‧‧‧Display media

30‧‧‧Adhesive layer

50, 50'‧‧‧ touch display panel

100‧‧‧Substrate

110‧‧‧ touch area

112‧‧‧Touch electrode layer

120‧‧‧The surrounding area

130a‧‧‧First lead

130b‧‧‧second lead

140‧‧‧ peripheral electrodes

150‧‧‧Ground electrode

160‧‧‧First touch electrode series

162, 164‧‧‧ first touch electrode

166‧‧‧First bridge wiring

170‧‧‧Second touch electrode series

172, 174‧‧‧ second touch electrode

176‧‧‧Second bridge wiring

180‧‧‧Isolated area

182‧‧‧Auxiliary electrode

184‧‧‧ Third Bridge Wiring

190, 194‧‧‧ insulation

192a, 192b‧‧‧ contact window opening

410, 510‧‧‧ first conductive pattern

420‧‧‧Second conductive pattern

520‧‧‧Auxiliary electrode pattern

A-A’, B-B’‧‧‧ line

D1, D2‧‧‧ direction

FIG. 1 is a top plan view of a touch panel according to an embodiment of the invention.

2 is a schematic diagram of a touch electrode layer of a touch area of the touch panel of FIG. 1 .

3A and 3B are schematic cross-sectional views taken along line A-A' and line B-B' in Fig. 2, respectively.

4A is a top plan view of the first conductive pattern of FIG. 2.

4B is a top plan view of the second conductive pattern of FIG. 2.

FIG. 5A is a top plan view of a first conductive pattern in accordance with another embodiment of the present invention. FIG.

5B is a top plan view of an auxiliary electrode pattern in accordance with another embodiment of the present invention.

5C is a top plan view of a second conductive pattern in accordance with another embodiment of the present invention.

FIG. 6 is a schematic diagram of a touch electrode layer according to another embodiment of the present invention.

7A and 7B are schematic cross-sectional views taken along line A-A' and line B-B' in Fig. 6, respectively.

FIG. 8A is a cross-sectional view of a touch display panel according to an embodiment of the invention.

FIG. 8B is a cross-sectional view of a touch display panel according to another embodiment of the present invention.

1 is a top view of a touch panel according to an embodiment of the invention, and FIG. 2 is a schematic diagram of a touch electrode layer of the touch area of the touch panel of FIG. 1 , and FIG. 3A and FIG. 3B are respectively FIG. 2 is a schematic cross-sectional view of line A-A' and line B-B'. In order to clearly illustrate the embodiment of the present invention, FIG. 2 only shows a part of the touch electrode layer 112 of FIG. 1. Those skilled in the art should understand that the touch electrode layer 112 of FIG. 1 is actually FIG. The components shown are constructed in an array form. The touch panel 10 has a touch area 110 and a peripheral area 120 surrounding the touch area 110. In the present invention, the touch panel 10 includes a substrate 100, a touch electrode layer 112, an insulating layer 190, an insulating layer 194, a plurality of first leads 130a, at least one second lead 130b, a plurality of peripheral electrodes 140, and at least one ground. Electrode 150. The touch electrode layer 112 includes a plurality of first touch electrode serials 160 And a plurality of second touch electrode strings 170. Each of the first touch electrode serials 160 includes a plurality of first touch electrodes 162 , a plurality of first touch electrodes 164 , and a plurality of first bridge lines 166 . Each of the second touch electrode serials 170 includes a plurality of second touch electrodes 172 , a plurality of second touch electrodes 174 , and a plurality of second bridge lines 176 . Furthermore, the touch electrode layer 112 further includes a plurality of auxiliary electrodes 182 and a plurality of third bridge lines 184.

The substrate 100 has a surface 100a. The substrate 100 can be a blank substrate, such as a glass substrate, a plastic substrate, a flexible substrate, or other suitable substrate. The substrate 100 may also be a substrate on which a line or component has been formed, such as a printed circuit board or a display panel.

The first touch electrode serial array 160 is disposed on the surface 100a of the substrate 100 and disposed in the touch area 110. The first touch electrode serial array 160 extends along the direction D1. In an embodiment, the plurality of first touch electrode serials 160 are, for example, arranged in parallel with each other, and the direction D1 is, for example, a y-axis direction. Each of the first touch electrode serials 160 includes a plurality of first touch electrodes 162 , a plurality of first touch electrodes 164 , and a plurality of first bridge lines 166 . The first touch electrodes 162 are interlaced with the first touch electrodes 164 , and the first bridge wires 166 are located between the two adjacent first touch electrodes 162 and the first touch electrodes 164 , and two adjacent A touch electrode 162 is electrically connected to the first touch electrode 164. The material of the first touch electrode 162, the first touch electrode 164 or the first bridge 166 is, for example, a metal, a metal oxide or any conductor or a combination thereof. The metal oxide includes, for example, indium tin oxide, indium zinc oxide, or a combination thereof. The shape of the first touch electrode 162, the first touch electrode 164 or the first bridge 166 is, for example, a mesh formed by a block or a thin line. Furthermore, as shown in FIG. 3A and FIG. 3B, the first touch electrode 162 The first touch electrode 164 and the first bridge wire 166 are, for example, located on the surface 100a of the substrate 100 and covered by the insulating layer 190. The insulating layer 190 has a plurality of contact opening 192a and a plurality of contact openings 192b. The material of the insulating layer 190 includes hafnium oxide, tantalum nitride, hafnium oxynitride or other suitable insulating materials.

The second touch electrode serial array 170 is disposed on the surface 100a of the substrate 100 and disposed in the touch area 110. The second touch electrode serial array 170 extends along the direction D2, and the direction D2 is different from the direction D1. In an embodiment, the plurality of second touch electrode serials 170 are, for example, arranged in parallel with each other, and the direction D2 is, for example, an x-axis direction, wherein the direction D2 is, for example, perpendicular to the direction D1. Each of the second touch electrode serials 170 includes a plurality of second touch electrodes 172 , a plurality of second touch electrodes 174 , and a plurality of second bridge lines 176 . The second touch electrode 172 is interlaced with the second touch electrode 174, and the second bridge wire 176 is located between the two adjacent second touch electrodes 172 and the second touch electrode 174, and two adjacent first The second touch electrodes 172 are electrically connected to the second touch electrodes 174 . The material of the second touch electrode 172 or the second touch electrode 174 is, for example, a metal, a metal oxide or any conductor or a combination thereof. The metal oxide includes, for example, indium tin oxide, indium zinc oxide, or a combination thereof. The material of the second bridge wire 176 is, for example, a metal oxide, a metal, a metal alloy, or any conductor or combination thereof. The metal is, for example, including molybdenum or aluminum. The metal alloy includes, for example, a molybdenum aluminum alloy The shape of the second touch electrode 172, the second touch electrode 174, or the second bridge wire 176 is, for example, a mesh shape composed of a block or a thin wire. As shown in FIG. 3A , the second touch electrode 172 and the second touch electrode 174 are located on the surface 100 a of the substrate 100 and covered by the insulating layer 190 , and the second touch electrode 172 and the second touch The electrode 174 corresponds to, for example, two Contact window opening 192a. The second bridge wire 176 is disposed, for example, on the insulating layer 190, and the second bridge wire 176 is simultaneously formed in the adjacent contact window opening 192a in the insulating layer 190 such that the second bridge wire 176 is electrically connected via the contact window opening 192a. Two adjacent second touch electrodes 172 and second touch electrodes 174.

The first touch electrode serial array 160 and the second touch electrode serial array 170 are electrically insulated from each other. In detail, as shown in FIG. 2, between the first touch electrode 162 and the second touch electrode 172 or the second touch electrode 174, and between the first touch electrode 164 and the second touch electrode 172 or The second touch electrodes 174 each have an isolation region 180 therebetween. Furthermore, in the crossover region of the first touch electrode serial 160 and the second touch electrode serial 170 (ie, between the first bridge 166 and the second bridge 176 as shown in FIG. 3A) The insulating layer 190 is disposed such that the first touch electrode serial array 160 and the second touch electrode serial string 170 are electrically insulated from each other.

The auxiliary electrode 182 is located on the surface 100a of the substrate 100 and disposed in the isolation region 180, wherein the auxiliary electrodes 182 are separated from each other by example (the auxiliary electrode pattern 520 as shown in FIG. 5B). The material of the auxiliary electrode 182 is, for example, a metal oxide, a metal, a metal alloy or any conductor or a combination thereof. The metal oxide includes, for example, indium tin oxide, indium zinc oxide, or a combination thereof. The metal is, for example, including molybdenum or aluminum. The metal alloy includes, for example, a molybdenum aluminum alloy The shape of the auxiliary electrode 182 is, for example, a mesh shape composed of a block or a thin wire. Furthermore, as shown in FIG. 2 and FIG. 3B, the auxiliary electrode 182 is covered by the insulating layer 190, and wherein the auxiliary electrode 182 adjacent to the first touch electrode 162 corresponds to, for example, two contact window openings 192b, and The auxiliary electrodes 182 adjacent to the two touch electrodes 172 correspond to, for example, the other two contact window openings 192b.

The third bridge wire 184 is located between the auxiliary electrode 182 adjacent to the first touch electrode 162 and between the auxiliary electrode 182 adjacent to the second touch electrode 172 to electrically connect the auxiliary electrode 182 . Although FIG. 2 of the present invention has disclosed the shape and configuration of the auxiliary electrode 182 and the third bridge 184 in one embodiment, the present invention is not limited thereto, and the auxiliary electrode 182 and the third bridge 184 may be other suitable. The shape and the proper configuration are as long as the third bridge wire 184 can electrically connect the auxiliary electrodes 182 that are separated from each other. The material of the third bridge wire 184 is, for example, a metal oxide, a metal, a metal alloy, or any conductor or combination thereof. The metal oxide includes, for example, indium tin oxide, indium zinc oxide, or a combination thereof. The metal is, for example, including molybdenum or aluminum. The metal alloy includes, for example, a molybdenum aluminum alloy The shape of the third bridge wire 184 is, for example, a mesh formed of a block or a thin wire. Furthermore, as shown in FIG. 2 and FIG. 3B, the third bridge wire 184 is disposed on the insulating layer 190, for example, and the third bridge wire 184 is simultaneously formed in the adjacent contact window opening 192b in the insulating layer 190, so that The triple bridge wire 184 is electrically connected to the auxiliary electrode 182 via the contact window opening 192b.

As described above, the touch electrode layer 112 of FIG. 2 can be composed of the first conductive pattern 410 of FIG. 4A and the second conductive pattern 420 of FIG. 4B. The first conductive pattern 410 of FIG. 4A includes a first touch electrode 162 , a first touch electrode 164 , a first bridge line 166 , a second touch electrode 172 , a second touch electrode 174 , and an auxiliary electrode 182 . The second conductive pattern 420 of FIG. 4B includes a second bridge line 176 and a third bridge line 184. Therefore, the first conductive pattern 410 and the second conductive pattern 420 used to form the touch electrode layer 112 of FIG. 2 belong to different conductive film layers, and the first conductive pattern 410 may be formed before or after the second conductive pattern 420. The invention is not limited thereto. In addition, The material of the first conductive pattern 410 is, for example, a metal oxide or any conductor or a combination thereof. The metal oxide includes, for example, indium tin oxide, indium zinc oxide, or a combination thereof. The material of the second conductive pattern 420 is, for example, a metal oxide, a metal, a metal alloy, or any conductor or a combination thereof. The metal oxide includes, for example, indium tin oxide, indium zinc oxide, or a combination thereof. The metal is, for example, including molybdenum or aluminum. The metal alloy includes, for example, a molybdenum aluminum alloy According to an embodiment, the method for forming the touch electrode layer 112 of FIG. 2 includes first forming a first conductive pattern 410 (shown in FIG. 4A) on the surface 100a of the substrate 100, and the forming method thereof includes the surface 100a of the substrate 100. The layer of deposited conductive material is then patterned by photolithography, or a printing process or other suitable method can be used. Next, an insulating layer 190 is formed on the first conductive pattern 410, and a contact opening 192a and a contact opening 192b are formed in the insulating layer 190 to expose a portion of the first conductive pattern 410 (as shown in FIGS. 3A and 3B). Thereafter, a second conductive pattern 420 is formed on the insulating layer 190 (as shown in FIG. 4B). The method for forming the second conductive pattern 420 includes depositing a conductive material layer on the insulating layer 190 while the conductive material layer is also filled into the contact opening 192a and the contact opening 192b, and then patterned by photolithography; or Printing methods or other suitable methods can be used. Therefore, the insulating layer 190 is located between the first conductive pattern 410 of FIG. 4A and the second conductive pattern 420 of FIG. 4B to separate the first conductive pattern 410 of FIG. 4A from the second conductive pattern 420 of FIG. 4B. In addition, as shown in FIG. 3A and FIG. 3B, the insulating layer 190 is located between the second bridge 176 and the first bridge 166 to electrically isolate the second bridge 176 from the first bridge 166. The insulating layer 190 is further located between the third bridge wire 184 and the first conductive pattern 410 to electrically connect the third bridge wire 184 with the first conductive pattern 410. isolation. Thereafter, an insulating layer 194 (shown in FIGS. 3A and 3B) is formed on the second conductive pattern 420 to complete the fabrication of the touch electrode layer 112 of FIG. The material of the insulating layers 190, 194 includes hafnium oxide, tantalum nitride, hafnium oxynitride or other suitable insulating materials.

It is worth mentioning that, according to another embodiment, the touch electrode layer 112 of FIG. 2 can also be composed of the first conductive pattern 510 of FIG. 5A, the auxiliary electrode pattern 520 of FIG. 5B, and the second conductive pattern 420 of FIG. 5C. In other words, the first conductive pattern 510 of FIG. 5A includes the first touch electrode 162 , the first touch electrode 164 , the first bridge line 166 , the second touch electrode 172 , and the second touch electrode 174 . The auxiliary electrode pattern 520 of FIG. 5B includes an auxiliary electrode 182. The second conductive pattern 420 of FIG. 5C includes a second bridge line 176 and a third bridge line 184. Therefore, in this embodiment, the first conductive pattern 510 used to form the touch electrode layer 112 of FIG. 2, the auxiliary electrode pattern 520 of FIG. 5B, and the second conductive pattern 420 belong to different conductive film layers, and each film layer The relative position of the upper and lower sides and the order of formation are not intended to limit the present invention, and those skilled in the art can appropriately adjust the design requirements. Further, the material of the first conductive pattern 510 is, for example, a metal oxide or any conductor or a combination thereof. The metal oxide includes, for example, indium tin oxide, indium zinc oxide, or a combination thereof. The material of the second conductive pattern 420 or the auxiliary electrode pattern 520 is, for example, a metal oxide, a metal, a metal alloy, or any conductor or a combination thereof. The metal oxide includes, for example, indium tin oxide, indium zinc oxide, or a combination thereof. The metal is, for example, including molybdenum or aluminum. The metal alloy includes, for example, a molybdenum aluminum alloy

Referring to FIG. 1 , the touch panel 10 further includes a plurality of first leads 130 a , at least one second lead 130 b , a plurality of peripheral electrodes 140 , and at least one ground Electrode 150.

The first lead 130a and the second lead 130b are disposed on the surface 100a of the substrate 100 and disposed in the peripheral region 120. The plurality of first leads 130a are respectively connected to the first touch electrode serial 160 or the second touch electrode serial 170. The second lead 130b is electrically connected to the auxiliary electrode 182 and the third bridge 184. The material of the first lead 130a or the second lead 130b comprises a metal oxide, a metal, a metal alloy or any conductor or a combination thereof. The metal oxide includes, for example, indium tin oxide, indium zinc oxide, or a combination thereof. The metal is, for example, including molybdenum or aluminum. The metal alloy includes, for example, a molybdenum aluminum alloy In an embodiment, the first lead 130a and the second lead 130b are formed, for example, by the same conductive layer or different conductive layers.

The peripheral electrode 140 is disposed on the surface 100a of the substrate 100 and disposed in the peripheral region 120. The first lead 130a and the peripheral electrode 140 electrically connected to the first touch electrode serial 160 or the second touch electrode serial 170 are electrically connected. Connected to sense the touch position. The peripheral electrode 140 is, for example, a transparent conductive layer (not shown) including a peripheral connection pad (not shown) and a peripheral connection pad. The material of the peripheral connection pad is, for example, a metal conductive material, and the material of the transparent conductive layer is, for example, a transparent conductive metal oxide.

The grounding electrode 150 is disposed on the surface 100a of the substrate 100 and disposed in the peripheral region 120. The second lead 130b electrically connected to the auxiliary electrode 182 is electrically connected to the ground electrode 150, so that the auxiliary electrode 182 and the third bridge 184 are connected. Electrically connected to the ground voltage.

In order to prove that the design of the touch electrode layer of the present invention can improve the touch sensitivity of the touch area of the touch panel, a simulation experiment is used for verification. This simulation The experimental example of the experiment is to calculate the capacitance values before and after the touch in the structure of the touch electrode layer 112 of FIG. 2 (ie, the third bridge 184 is used to bridge the auxiliary electrode 182 to electrically connect the auxiliary electrode 182 to the ground voltage). The amount of change. A comparative example of this simulation experiment is to calculate a design without a third bridge connection under the architecture similar to the above experimental example (ie, the third bridge wiring 184 is not formed in the structure of the touch electrode layer 112 of FIG. 2 to bridge the auxiliary electrode 182. The amount of change in capacitance value before and after the touch of the auxiliary electrode 182 electrically connected to the ground voltage). The change in the capacitance value before and after the touch of the comparative example was 13.38%, and the change in the capacitance value before and after the touch of the experimental example was increased to 16.19%. Therefore, it can be seen that the touch electrode layer of the touch panel of the touch panel of the present invention can reduce the capacitance value before the touch and increase the capacitance value before and after the touch, thereby improving the touch panel touch. Touch sensitivity of the control area.

In the embodiment of FIG. 2, FIG. 3A and FIG. 3B, the second bridge line 176 and the third bridge line 184 are located at the first touch electrodes 162, 164, the second touch electrodes 172, 174, the first bridge line 166, and Above the auxiliary electrode 182. However, the present invention is not limited thereto. In other embodiments, the second bridge wire 176 and the third bridge wire 184 may also be disposed on the first touch electrodes 162, 164, the second touch electrodes 172, 174, and the first bridge. The wiring 166 and the lower side of the auxiliary electrode 182 are as described later in the embodiments of Figs. 6, 7A and 7B.

FIG. 6 is a schematic view of a touch electrode layer according to another embodiment of the present invention, and FIGS. 7A and 7B are cross-sectional views along line A-A' and line B-B' of FIG. 6, respectively. This embodiment is similar to the embodiment of the above-mentioned FIG. 2, FIG. 3A and FIG. 3B, and therefore the same elements are denoted by the same reference numerals and the description thereof will not be repeated. Figure 6, Figure 7A and Figure The difference between the embodiment of FIG. 2B and the embodiment of FIG. 2, FIG. 3A and FIG. 3B is that the second bridge line 176 and the third bridge line 184 are located at the first touch electrodes 162, 164 and the second touch electrode 172. 174, below the first bridge line 166 and the auxiliary electrode 182. In detail, in the embodiment, the insulating layer 190 covers the second bridge line 176 and the third bridge line 184, and the first touch electrodes 162, 164, the second touch electrodes 172, 174, and the first bridge line 166 And the auxiliary electrode 182 is disposed on the insulating layer 190. Moreover, the insulating layer 190 has a plurality of contact opening 192a and a plurality of contact openings 192b to expose a portion of the second bridge 176 and a portion of the third bridge 184. While the second touch electrode 172 and the second touch electrode 174 are formed, the contact opening 192a and the contact opening 192b are filled with a conductive material, so that the second bridge 176 is electrically connected via the contact opening 192a. The second touch electrode 172 and the second touch electrode 174 are adjacent to each other, and the third bridge wire 184 is electrically connected to the auxiliary electrode 182 via the contact window opening 192b.

8A and 8B are schematic cross-sectional views of a touch display panel according to an embodiment of the invention, respectively. Referring to FIG. 8A , the touch display panel 50 is an external touch display panel, which includes a display panel 20 and a touch panel 10 . The touch panel 10 includes a touch electrode layer 112 (ie, as shown in FIG. 2 or FIG. 6). The touch panel 10 having the touch electrode layer 112 can be disposed on the outer surface 20a of the display panel 20 by the adhesive layer 30. In another embodiment, as shown in FIG. 8B, the touch display panel 50' is a built-in touch display panel, and includes a display panel 20 and a touch electrode layer 112. The display panel 20 includes an element substrate 22, a counter substrate 24, and a display medium 26. The display panel 20 of FIG. 8A and FIG. 8B described above is, for example, a liquid crystal display panel and an organic display surface. Board, electrophoretic display panel or plasma display panel.

In summary, in the touch panel and the touch display panel of the present invention, the touch electrode layer of the touch area of the touch panel includes an auxiliary electrode and a bridge connecting the auxiliary electrode electrically, wherein the auxiliary electrode and the The bridge wire is further electrically connected to the ground voltage. Therefore, the touch electrode layer of the touch panel of the touch panel of the present invention can reduce the capacitance value before the touch and increase the capacitance value before and after the touch, thereby improving the touch area of the touch panel. Control sensitivity.

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.

112‧‧‧Touch electrode layer

160‧‧‧First touch electrode series

162, 164‧‧‧ first touch electrode

166‧‧‧First bridge wiring

170‧‧‧Second touch electrode series

172, 174‧‧‧ second touch electrode

176‧‧‧Second bridge wiring

180‧‧‧Isolated area

182‧‧‧Auxiliary electrode

184‧‧‧ Third Bridge Wiring

192a, 192b‧‧‧ contact window opening

A-A’, B-B’‧‧‧ line

D1, D2‧‧‧ direction

Claims (8)

A touch panel includes: a substrate having a surface; a plurality of first touch electrode serials on the surface of the substrate, wherein each of the first touch electrode serials comprises a plurality of first touches a plurality of first bridge wires electrically connected to the first touch electrodes; a plurality of second touch electrode strings disposed on the surface of the substrate, wherein each of the second touch electrode strings The device includes a plurality of second touch electrodes and a plurality of second bridge wires electrically connected to the second touch electrodes, wherein the first touch electrodes and the second touch electrodes have an isolation region therebetween a plurality of auxiliary electrodes on the surface of the substrate and disposed in the isolation region, wherein the auxiliary electrodes are separated from each other; and a plurality of third bridge lines between the auxiliary electrodes to make the The auxiliary electrodes are electrically connected together, wherein the auxiliary electrodes and the third bridge wires are electrically connected to a ground voltage. The touch panel of claim 1, wherein the first touch electrodes, the second touch electrodes, and the first bridge lines form a first conductive pattern, and the second bridge lines And the third bridge wires form a second conductive pattern, and the first conductive pattern and the second conductive pattern belong to different film layers. The touch panel of claim 2, further comprising an insulating layer between the second bridge wires and the first bridge wires. The touch panel of claim 3, wherein the insulating layer is further Located between the third bridge wires and the first conductive pattern. The touch panel of claim 1, further comprising: at least one lead on the surface of the substrate, wherein the at least one lead is electrically connected to the auxiliary electrodes; and a ground electrode is located at the The at least one lead is electrically connected to the ground electrode on the surface of the substrate, so that the auxiliary electrodes and the third bridge wires are electrically connected to the ground voltage. The touch panel of claim 1, wherein the material of the first conductive pattern or the second conductive pattern comprises indium tin oxide, indium zinc oxide or a combination thereof. The touch panel of claim 1, wherein the material of the at least one lead comprises indium tin oxide, indium zinc oxide, molybdenum aluminum alloy or a combination thereof. A touch display panel includes: a display panel; and a touch electrode layer on an outer surface of the display panel or in the display panel, wherein the touch electrode layer comprises: a plurality of first touch electrodes Each of the first touch electrode serials includes a plurality of first touch electrodes and a plurality of first bridge wires electrically connecting the first touch electrodes; and a plurality of second touch electrode series, Each of the second touch electrode serials includes a plurality of second touch electrodes and a plurality of second bridge wires electrically connected to the second touch electrodes, wherein the first touch electrodes and the second portions There is a touch electrode between An isolation region; a plurality of auxiliary electrodes disposed in the isolation region, wherein the auxiliary electrodes are separated from each other; and a plurality of third bridge wires disposed between the auxiliary electrodes to electrically connect the auxiliary electrodes Together, the auxiliary electrodes and the third bridge wires are electrically connected to a ground voltage.