CN103440060B - Touch panel and touch display panel - Google Patents

Abstract

The invention provides a touch panel and a touch display panel. The touch panel includes a substrate, a first touch electrode series, a second touch electrode series, an auxiliary electrode and a third bridge line. The first touch electrodes are in series on the substrate, and include first touch electrodes and first bridge lines electrically connecting the first touch electrodes. The second touch electrodes are located in series on the substrate, and include second touch electrodes and second bridge lines electrically connecting the second touch electrodes. There is an isolation area between the first touch electrode and the second touch electrode. The auxiliary electrodes are located on the substrate and arranged in the isolation area, wherein the auxiliary electrodes are separated from each other. The third bridge wire is located between the auxiliary electrodes to electrically connect the auxiliary electrodes together, wherein the auxiliary electrodes and the third bridge wire are electrically connected to the ground voltage.

Description

Touch panel and touch display panel

technical field

The present invention relates to a panel, in particular to a touch panel and a touch display panel.

Background technique

In recent years, with the rapid development and application of information technology, wireless mobile communications and information home appliances, many information products have been replaced by traditional input devices such as keyboards or mice in order to achieve more convenience, smaller size and more humanization. Change to using touch panels as input devices, among which touch display panels are the most popular products today. Existing touch panels can be roughly classified into capacitive, resistive, and photosensitive types, among which capacitive touch panels are the mainstream products. Since most of the existing touch panels have the problem of limited 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 is an urgent need for the touch panel. A major challenge to overcome.

Contents of the invention

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

The present invention provides a touch panel, which includes a substrate, a plurality of first touch electrode series, a plurality of second touch electrode series, a plurality of auxiliary electrodes, and a plurality of third bridge lines. The substrate has a surface. A plurality of first touch electrode series are located on the surface of the substrate, wherein each first touch electrode series includes a plurality of first touch electrodes and a plurality of first bridge lines electrically connecting the first touch electrodes . A plurality of second touch electrode series are located on the surface of the substrate, wherein each second touch electrode series includes a plurality of second touch electrodes and a plurality of second bridge lines electrically connecting the second touch electrodes . There is an isolation area 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 bridging lines are located between the auxiliary electrodes to electrically connect the auxiliary electrodes together, wherein the auxiliary electrodes and the third bridging lines are electrically connected to the ground voltage.

The present invention further provides a touch display panel, which includes a display panel and a touch electrode layer. The touch electrode layer is located on the outer surface of the display panel or in the display panel. The touch electrode layer includes a plurality of first touch electrode series, a plurality of second touch electrode series, a plurality of auxiliary electrodes and a plurality of third bridge lines. Each first touch electrode series includes a plurality of first touch electrodes and a plurality of first bridge lines electrically connecting the first touch electrodes. Each second touch electrode series includes a plurality of second touch electrodes and a plurality of second bridge lines electrically connecting the second touch electrodes. There is an isolation area 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 bridging lines are located between the auxiliary electrodes to electrically connect the auxiliary electrodes together, wherein the auxiliary electrodes and the third bridging lines are electrically connected to the ground voltage.

Based on the above, 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 line electrically connecting the auxiliary electrode, wherein the auxiliary electrode and the bridge line It is further electrically connected to the ground voltage. Therefore, the design of the touch electrode layer in the touch area of the touch panel of the present invention can reduce the capacitance before touch and increase the change in capacitance before and after touch, thereby improving the touch sensitivity of the touch area of the touch panel. control sensitivity.

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

Description of drawings

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

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

Fig. 3A and Fig. 3B are the cross-sectional schematic diagrams along line A-A' and line B-B' in Fig. 2 respectively;

4A is a schematic top view of the first conductive pattern in FIG. 2;

4B is a schematic top view of the second conductive pattern in FIG. 2;

5A is a schematic top view of a first conductive pattern according to another embodiment of the present invention;

5B is a schematic top view of an auxiliary electrode pattern according to another embodiment of the present invention;

5C is a schematic top view of a second conductive pattern according to another embodiment of the present invention;

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

Fig. 7A and Fig. 7B are the cross-sectional schematic diagrams along line A-A' and line B-B' in Fig. 6 respectively;

8A is a schematic cross-sectional view of a touch display panel according to an embodiment of the present invention;

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

reference sign

10: Touch panel 20: Display panel

20a, 100a: Surface 22: Element substrate

24: Counter substrate 26: Display medium

30: Adhesive layer 50, 50': Touch display panel

100: substrate 110: touch area

112: touch electrode layer 120: peripheral area

130a: first lead 130b: second lead

140: peripheral electrode 150: ground electrode

160: first touch electrode series 162, 164: first touch electrode

166: first bridge line 170: second touch electrode series

172, 174: the second touch electrode 176: the second bridge line

180: Isolation area 182: Auxiliary electrode

184: third bridge wire 190, 194: insulating layer

192a, 192b: contact window openings 410, 510: first conductive pattern

420: second conductive pattern 520: auxiliary electrode pattern

A-A', B-B': Line D1, D2: Direction

detailed description

FIG. 1 is a schematic top view of a touch panel according to an embodiment of the present invention, FIG. 2 is a schematic diagram of a touch electrode layer in the touch area of the touch panel of FIG. 1 , and FIG. 3A and FIG. 3B are respectively A schematic cross-sectional view along line AA' and line BB' in FIG. 2 . In order to clearly illustrate the embodiment of the present invention, FIG. 2 only shows a part of the touch electrode layer 112 in FIG. 1 . Those skilled in the art should understand that the touch electrode layer 112 in FIG. The components shown are formed in array form. Please refer to FIG. 1 , FIG. 2 , FIG. 3A and FIG. 3B at the same time, 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 series 160 and a plurality of second touch electrode series 170 . Each first touch electrode series 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 second touch electrode series 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 substrates. The substrate 100 may also be a substrate on which circuits or elements have been formed, such as a printed circuit board or a display panel.

The first touch electrode series 160 is located on the surface 100 a of the substrate 100 and disposed in the touch area 110 , wherein the first touch electrode series 160 extends along the direction D1. In one embodiment, the plurality of first touch electrode series 160 are, for example, arranged parallel to each other, and the direction D1 is, for example, the y-axis direction. Each first touch electrode series 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 and the first touch electrodes 164 are alternately arranged, and the first bridge line 166 is located between the two adjacent first touch electrodes 162 and the first touch electrodes 164, and makes the two adjacent first touch electrodes 164 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 line 166 includes, for example, metal, metal oxide or any conductor or a combination thereof. Metal oxides include, for example, indium tin oxide, indium zinc oxide, or combinations thereof. The shape of the first touch electrodes 162 , the first touch electrodes 164 or the first bridging lines 166 is, for example, a block shape or a mesh shape of thin lines. Moreover, as shown in FIG. 3A and FIG. 3B , the first touch electrodes 162 , the first touch electrodes 164 and the first bridge lines 166 are, for example, located on the surface 100 a of the substrate 100 and covered by the insulating layer 190 . The insulating layer 190 has a plurality of contact openings 192a and a plurality of contact openings 192b. The material of the insulating layer 190 includes silicon oxide, silicon nitride, silicon oxynitride or other suitable insulating materials.

The second touch electrode series 170 is located on the surface 100 a of the substrate 100 and disposed in the touch area 110 , wherein the second touch electrode series 170 extends along a direction D2 , and the direction D2 is different from the direction D1 . In one embodiment, the plurality of second touch electrode series 170 are arranged parallel to each other, and the direction D2 is, for example, the x-axis direction, wherein the direction D2 is, for example, perpendicular to the direction D1. Each second touch electrode series 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 electrodes 172 and the second touch electrodes 174 are alternately arranged, and the second bridge line 176 is located between the two adjacent second touch electrodes 172 and the second touch electrodes 174, and makes the two adjacent first touch electrodes 174 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 includes, for example, metal, metal oxide, or any conductor or a combination thereof. Metal oxides include, for example, indium tin oxide, indium zinc oxide, or combinations thereof. The material of the second bridging line 176 includes, for example, metal oxide, metal, metal alloy or any conductor or a combination thereof. Metals include, for example, molybdenum or aluminum. Metal alloys include, for example, molybdenum-aluminum alloys. The shape of the second touch electrodes 172 , the second touch electrodes 174 or the second bridging lines 176 is, for example, a block shape or a mesh shape of thin lines. Moreover, as shown in FIG. 3A , the second touch electrodes 172 and the second touch electrodes 174 are, for example, located on the surface 100 a of the substrate 100 and covered by an insulating layer 190 , and the second touch electrodes 172 and the second touch electrodes The electrodes 174 correspond to the two contact openings 192a, for example. The second bridging line 176 is, for example, disposed on the insulating layer 190, and the second bridging line 176 is simultaneously formed in the adjacent contact opening 192a in the insulating layer 190, so that the second bridging line 176 is electrically connected through the contact opening 192a. Two adjacent second touch electrodes 172 and second touch electrodes 174 .

The first touch electrode series 160 and the second touch electrode series 170 are electrically insulated from each other. Specifically, as shown in FIG. 2, between the first touch electrodes 162 and the second touch electrodes 172 or the second touch electrodes 174, and between the first touch electrodes 164 and the second touch electrodes 172 or There are isolation regions 180 between the second touch electrodes 174 . Moreover, at the intersection of the first touch electrode series 160 and the second touch electrode series 170 (crossoverregion) (that is, between the first bridge line 166 and the second bridge line 176 as shown in FIG. 3A ) The insulating layer 190 is configured, so the first touch electrode series 160 and the second touch electrode series 170 are electrically insulated from each other.

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

The third bridge line 184 is located between the auxiliary electrodes 182 adjacent to the first touch electrode 162 , and is located between the auxiliary electrodes 182 adjacent to the second touch electrode 172 , so that the auxiliary electrodes 182 are electrically connected together. . Although FIG. 2 of the present invention has disclosed the shapes and configurations of the auxiliary electrode 182 and the third bridge line 184 in one embodiment, the present invention is not limited thereto, and the auxiliary electrode 182 and the third bridge line 184 can also be other suitable shapes. The shape and proper configuration of the third bridging line 184 can electrically connect the auxiliary electrodes 182 separated from each other. The material of the third bridging line 184 includes, for example, metal oxide, metal, metal alloy or any conductor or a combination thereof. Metal oxides include, for example, indium tin oxide, indium zinc oxide, or combinations thereof. Metals include, for example, molybdenum or aluminum. Metal alloys include, for example, molybdenum-aluminum alloys. The shape of the third bridging line 184 is, for example, a block shape or a mesh shape made of thin wires. Moreover, as shown in FIG. 2 and FIG. 3B , the third bridging line 184 is, for example, disposed on the insulating layer 190, and the third bridging line 184 is simultaneously formed in the adjacent contact window opening 192b in the insulating layer 190, so that the third bridging line 184 The triple bridge line 184 is electrically connected to the auxiliary electrode 182 through the contact window opening 192b.

As mentioned above, the touch electrode layer 112 in FIG. 2 may be composed of the first conductive pattern 410 in FIG. 4A and the second conductive pattern 420 in FIG. 4B . The first conductive pattern 410 in 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 in FIG. 4B includes the second bridge lines 176 and the third bridge lines 184 . Therefore, the first conductive pattern 410 and the second conductive pattern 420 used to form the touch electrode layer 112 in FIG. 2 belong to different conductive film layers, and the first conductive pattern 410 can be formed before or after the second conductive pattern 420. , the present invention is not limited thereto. In addition, the material of the first conductive pattern 410 includes, for example, metal oxide or any conductor or a combination thereof. Metal oxides include, for example, indium tin oxide, indium zinc oxide, or combinations thereof. The material of the second conductive pattern 420 includes, for example, metal oxide, metal, metal alloy or any conductor or a combination thereof. Metal oxides include, for example, indium tin oxide, indium zinc oxide, or combinations thereof. Metals include, for example, molybdenum or aluminum. Metal alloys include, for example, molybdenum-aluminum alloys. According to an embodiment, the method for forming the touch electrode layer 112 in FIG. 2 includes first forming a first conductive pattern 410 on the surface 100a of the substrate 100 (as shown in FIG. A layer of conductive material is deposited and patterned by lithographic etching, or printing or other suitable methods may be used. Next, an insulating layer 190 is formed on the first conductive pattern 410 , and a contact opening 192 a and a contact opening 192 b are formed in the insulating layer 190 to expose part of the first conductive pattern 410 (as shown in FIG. 3A and FIG. 3B ). Afterwards, a second conductive pattern 420 is formed on the insulating layer 190 (as shown in FIG. 4B ). The forming method of the second conductive pattern 420 includes depositing a conductive material layer on the insulating layer 190 and simultaneously filling the conductive material layer into the contact opening 192a and the contact opening 192b, and then performing patterning by lithographic etching; or Printing 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 line 176 and the first bridge line 166 to electrically isolate the second bridge line 176 from the first bridge line 166 . The insulating layer 190 is also located between the third bridge line 184 and the first conductive pattern 410 to electrically isolate the third bridge line 184 from the first conductive pattern 410 . After that, an insulating layer 194 (as shown in FIG. 3A and FIG. 3B ) is formed on the second conductive pattern 420 to complete the fabrication of the touch electrode layer 112 in FIG. 2 . Materials of the insulating layers 190 and 194 include silicon oxide, silicon nitride, silicon oxynitride or other suitable insulating materials.

It is worth mentioning that, according to another embodiment, the touch electrode layer 112 in FIG. 2 may also be composed of the first conductive pattern 510 in FIG. 5A , the auxiliary electrode pattern 520 in FIG. 5B , and the second conductive pattern 420 in FIG. 5C . In other words, the first conductive pattern 510 in FIG. 5A includes the first touch electrodes 162 , the first touch electrodes 164 , the first bridge lines 166 , the second touch electrodes 172 , and the second touch electrodes 174 . The auxiliary electrode pattern 520 of FIG. 5B includes the auxiliary electrode 182 . The second conductive pattern 420 in FIG. 5C includes the second bridge lines 176 and the third bridge lines 184 . Therefore, in this embodiment, the first conductive pattern 510 used to form the touch electrode layer 112 in FIG. 2 , the auxiliary electrode pattern 520 in FIG. 5B , and the second conductive pattern 420 belong to different conductive film layers. The upper and lower relative positions and the order of formation are not intended to limit the present invention, and those skilled in the art can make appropriate adjustments according to design requirements. In addition, the material of the first conductive pattern 510 includes, for example, metal oxide or any conductor or a combination thereof. Metal oxides include, for example, indium tin oxide, indium zinc oxide, or combinations thereof. The material of the second conductive pattern 420 or the auxiliary electrode pattern 520 includes, for example, metal oxide, metal, metal alloy or any conductor or a combination thereof. Metal oxides include, for example, indium tin oxide, indium zinc oxide, or combinations thereof. Metals include, for example, molybdenum or aluminum. Metal alloys include, for example, molybdenum-aluminum alloys.

Please continue to refer 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 wires 130a and the second lead wires 130b are located on the surface 100a of the substrate 100 and disposed in the peripheral region 120 , wherein the plurality of first lead wires 130a are respectively connected to the first touch electrode series 160 or the second touch electrode series 170 are electrically connected, and the second lead 130 b is electrically connected to the auxiliary electrode 182 and the third bridge line 184 . The material of the first lead 130a or the second lead 130b includes metal oxide, metal, metal alloy or any conductor or a combination thereof. Metal oxides include, for example, indium tin oxide, indium zinc oxide, or combinations thereof. Metals include, for example, molybdenum or aluminum. Metal alloys include, for example, molybdenum-aluminum alloys. In one embodiment, the first lead 130a and the second lead 130b are formed by, for example, the same conductive layer or different conductive layers.

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

The ground electrode 150 is located on the surface 100a of the substrate 100 and disposed in the peripheral region 120, wherein 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 line 184 Electrically connected to ground voltage.

In order to prove that the design of the touch electrode layer of the present invention can indeed improve the touch sensitivity of the touch area of the touch panel, a simulation experiment is used for verification. The experimental example of this simulation experiment is to calculate the before and after touch in the structure of the touch electrode layer 112 in FIG. Capacitance value change. The comparative example of this simulation experiment is to calculate the design without the third bridge line under the structure similar to the above experimental example (that is, the third bridge line 184 is not formed to bridge the auxiliary electrode 182 in the structure of the touch electrode layer 112 in FIG. Make the auxiliary electrode 182 electrically connected to the ground voltage) before and after the touch capacitance variation. The change in capacitance before and after the touch of the comparative example is 13.38%, and the change of the capacitance before and after the touch of the experimental example increases to 16.19%. Therefore, it can be seen that the design of the touch electrode layer in the touch area of the touch panel of the present invention can reduce the capacitance value before touch and increase the change in capacitance value before and after touch, thereby improving the touch sensitivity of the touch panel. The touch sensitivity of the control area.

In the embodiment shown in 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 line 176 and the third bridge line 184 can also be arranged on the first touch electrodes 162, 164, the second touch electrodes 172, 174, the first bridge The wiring 166 and the lower part of the auxiliary electrode 182 are as described in the embodiments of FIG. 6 , FIG. 7A and FIG. 7B hereinafter.

FIG. 6 is a schematic diagram of a touch electrode layer according to another embodiment of the present invention, and FIG. 7A and FIG. 7B are respectively cross-sectional schematic diagrams along line A-A' and line B-B' in FIG. 6 . This embodiment is similar to the above-mentioned embodiments of FIG. 2 , FIG. 3A and FIG. 3B , so the same components are denoted by the same symbols and will not be described again. The difference between the embodiment of FIG. 6 , FIG. 7A and FIG. 7B and the above-mentioned embodiment of FIG. 2 , FIG. 3A and FIG. 3B is that the second bridge line 176 and the third bridge line 184 are located Below the second touch electrodes 172 , 174 , the first bridge lines 166 and the auxiliary electrodes 182 . Specifically, in this 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, the first bridge line 166 And the auxiliary electrode 182 is disposed on the insulating layer 190 . Furthermore, the insulating layer 190 has a plurality of contact openings 192 a and a plurality of contact openings 192 b to expose part of the second bridge line 176 and part of the third bridge line 184 . While forming the second touch electrode 172 and the second touch electrode 174, the contact window opening 192a and the contact window opening 192b will be filled with conductive material, so that the second bridge line 176 is electrically connected to the two via the contact window opening 192a. The adjacent second touch electrode 172 and the second touch electrode 174 make the third bridge line 184 electrically connected to the auxiliary electrode 182 through the contact window opening 192 b.

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

To sum up, in the touch panel and touch display panel of the present invention, the touch electrode layer of the touch area of the touch panel includes auxiliary electrodes and bridge lines electrically connecting the auxiliary electrodes, wherein the auxiliary electrodes and the The bridging line is further electrically connected to the ground voltage. Therefore, the design of the touch electrode layer in the touch area of the touch panel of the present invention can reduce the capacitance before touch and increase the change in capacitance before and after touch, thereby improving the touch sensitivity of the touch area of the touch panel. control sensitivity.

Although the present invention has been disclosed above with the embodiments, it is not intended to limit the present invention, and any person with common knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention, so The scope of protection of the present invention should be defined by the appended claims.

Claims (8)

1. A touch panel, characterized in that, comprising: a substrate having a surface; A plurality of first touch electrode series, located on the surface of the substrate, wherein each first touch electrode series includes a plurality of first touch electrodes and a plurality of electrically connected first touch electrodes a first bridge line; A plurality of second touch electrode series, located on the surface of the substrate, wherein each second touch electrode series includes a plurality of second touch electrodes and a plurality of electrical connections between the second touch electrodes a second bridge line, wherein there is an isolation area between the first touch electrodes and the second touch electrodes; a plurality of auxiliary electrodes located 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 are located between the auxiliary electrodes to electrically connect the auxiliary electrodes together, wherein the auxiliary electrodes and the third bridge lines are electrically connected to a ground voltage. 2. The touch panel according to claim 1, wherein the first touch electrodes, the second touch electrodes and the first bridging lines form a first conductive pattern, and the second touch electrodes The bridging lines and the third bridging lines form a second conductive pattern, and the first conductive pattern and the second conductive pattern belong to different film layers. 3. The touch panel according to claim 2, further comprising an insulating layer located between the second bridge lines and the first bridge lines. 4 . The touch panel according to claim 3 , wherein the insulating layer is further located between the third bridge lines and the first conductive pattern. 5. The touch panel according to claim 1, further comprising: at least one lead is located on the surface of the substrate, and the at least one lead is electrically connected to the auxiliary electrodes; and A ground electrode is located on the surface of the substrate, and the at least one lead wire is electrically connected to the ground electrode, so that the auxiliary electrodes and the third bridge lines are electrically connected to the ground voltage. 6 . The touch panel according to claim 2 , wherein a material of the first conductive pattern or the second conductive pattern comprises indium tin oxide, indium zinc oxide, or a combination thereof. 7 . The touch panel according to claim 5 , wherein the material of the at least one lead comprises indium tin oxide, indium zinc oxide, molybdenum aluminum alloy, or a combination thereof. 8. A touch display panel, characterized in that it comprises: a display panel; and A touch electrode layer located on an outer surface of the display panel or located in the display panel, wherein the touch electrode layer includes: A plurality of first touch electrode series, each first touch electrode series includes a plurality of first touch electrodes and a plurality of first bridge lines electrically connecting the first touch electrodes; A plurality of second touch electrode series, each second touch electrode series includes a plurality of second touch electrodes and a plurality of second bridge lines electrically connecting the second touch electrodes, wherein the There is an isolation area between the first touch electrode and the second touch electrodes; 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 lines are located between the auxiliary electrodes to electrically connect the auxiliary electrodes together, wherein the auxiliary electrodes and the third bridge lines are electrically connected to a ground voltage.