Touch panel and touch display device

Abstract

The present disclosure discloses a touch panel and a touch display device. The touch panel includes a plurality of touch electrode blocks and a plurality of touch wirings, the touch wirings are configured to input a drive signal to the touch electrode blocks, each touch electrode block includes a first conductive layer and a second conductive layer provided in a stacked manner, a first insulating layer is provided between the first conductive layer and the second conductive layer, the first conductive layer and the second conductive layer are electrically connected, each touch wiring includes a first wiring layer and a second wiring layer provided in a stacked manner, a second insulating layer is provided between the first wiring layer and the second wiring layer, the first wiring layer and the second wiring layer are electrically connected, the first conductive layer and the first wiring layer are provided in the same layer, the second conductive layer and the second wiring layer are provided in the same layer, and the first insulating layer and the second insulating layer are provided in the same layer.

Description

[Technical field]

[0001] This application claims priority to a Chinese patent application bearing application number 202110738467.6, filed with the China Patent Office on June 30, 2021, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of display panels, for example touch panels and touch display devices. [Background technology]

[0003] With the development of touch technology and the improvement of people's living standards, touch display devices have been widely applied, but the cost of touch display devices is high. Summary of the Invention [Problem to be solved by the invention]

[0004] The present application provides a touch panel and a display device that can use the same driving integrated circuit chip (IC) as the display panel, thereby reducing the cost of the touch panel and the cost of the touch display device. [Means for solving the problem]

[0005] The present application relates to a touch electrode block including a plurality of touch electrode blocks each including a first conductive layer and a second conductive layer that are stacked and electrically connected with a first insulating layer provided therebetween, and a plurality of touch wirings configured to input a drive signal to the touch electrode block, each including a first wiring layer and a second wiring layer that are stacked and electrically connected with a second insulating layer provided therebetween, the first conductive layer and the first wiring layer being provided in the same layer, the second conductive layer and the second wiring layer being provided in the same layer, and the first insulating layer and the second insulating layer being provided in the same layer. a touch electrode block arranged sequentially along a plurality of second directions constitutes a touch electrode row, the plurality of touch electrode rows are arranged sequentially along a first direction, the second direction and the first direction intersect with each other, the touch electrode block further includes at least one opening extending along the second direction, the touch wiring extends along the second direction and passes through at least one of the openings, the touch electrode block further includes at least one jumper wire, and the jumper wire is configured to electrically connect regions located on both sides of the opening of the touch electrode block. , providing a touch panel.

[0006] The present application further provides a touch display device, including a display panel arranged in a stacked manner and including a display area, and the above touch panel, in which a plurality of touch electrode blocks are arranged corresponding to the display area. Effect of the Invention

[0007] The touch panel of the present application includes a first conductive layer and a second conductive layer which are stacked on each touch electrode block, and the first conductive layer and the second conductive layer of each touch electrode block are electrically connected to reduce the resistance of each touch electrode block, and the first wiring layer and the second wiring layer of each touch wiring are electrically connected to reduce the resistance of the touch wiring, thereby reducing the requirements for the driving capability of the touch driving IC so that the touch panel can adopt the same driving IC as the display panel, thereby reducing the cost of the touch panel, reducing the cost of the touch display device, and reducing the space that needs to be occupied by the touch panel in the touch display device, which is advantageous for reducing the volume of the touch display device. Furthermore, by providing the first conductive layer and the first wiring layer in the same layer, the second conductive layer and the second wiring layer in the same layer, and the first insulating layer and the second insulating layer in the same layer, the facing area between the touch electrode block and the touch wiring connected to another touch electrode block is significantly reduced, effectively reducing the parasitic capacitance between the touch electrode block and the touch wiring connected to another touch electrode block, and improving the touch effect of the touch panel. [Brief description of the drawings]

[0008] [Figure 1] FIG. 2 is a structural schematic diagram of a touch panel according to an embodiment of the present application. [Diagram 2] 2 is a schematic cross-sectional view of a touch panel according to an embodiment of the present application taken along the direction AA' in FIG. 1. [Diagram 3] 2 is a schematic cross-sectional view of another touch panel according to an embodiment of the present application taken along the direction AA' in FIG. 1. FIG. [Figure 4] FIG. 2 is a structural schematic diagram of yet another touch panel according to an embodiment of the present application. [Diagram 5]5 is an enlarged schematic view of a touch panel according to an embodiment of the present application taken along a region C in FIG. 4. FIG. [Figure 6] 5 is a schematic cross-sectional view of one touch panel according to an embodiment of the present application taken along the direction BB' in FIG. 4. FIG. [Figure 7] 5 is a schematic cross-sectional view of another touch panel according to an embodiment of the present application taken along the direction BB' in FIG. 4. FIG. [Figure 8] FIG. 2 is a structural schematic diagram of yet another touch panel according to an embodiment of the present application. [Figure 9] 9 is an enlarged schematic diagram of a region D in FIG. 8 of a touch panel according to an embodiment of the present application. [Figure 10] 9 is a schematic cross-sectional view of one touch panel according to an embodiment of the present application taken along a CC' direction in FIG. 8. FIG. [Figure 11] FIG. 2 is a schematic diagram of a first mesh line of a touch panel in accordance with an embodiment of the present application. [Figure 12] FIG. 4 is a schematic diagram of a first mesh line of another touch panel in accordance with an embodiment of the present application. [Figure 13] FIG. 13 is a schematic diagram of a first mesh line of yet another touch panel in accordance with an embodiment of the present application. [Figure 14] FIG. 13 is a schematic diagram of a first mesh line of yet another touch panel in accordance with an embodiment of the present application. [Figure 15] FIG. 2 is a schematic diagram of a first conductive layer of a touch panel according to an embodiment of the present application. [Figure 16] FIG. 2 is a schematic diagram of a second conductive layer of a touch panel according to an embodiment of the present application. [Figure 17] FIG. 2 is a structural schematic diagram of a touch display device according to an embodiment of the present application; [Figure 18] 16 is a schematic cross-sectional view of one touch panel according to an embodiment of the present application taken along the direction DD' in FIG. 15. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The present application will be described below with reference to the drawings and examples. The specific examples described herein are merely for the purpose of interpreting the present application. For the sake of convenience, only parts related to the present application are shown in the drawings.

[0010] FIG. 1 is a structural schematic diagram of a touch panel according to an embodiment of the present application. FIG. 2 is a cross-sectional schematic diagram of a touch panel according to an embodiment of the present application, taken along the AA' direction in FIG. 1. In relation to FIGS. 1 and 2, FIG. 3 is a cross-sectional schematic diagram of another touch panel according to an embodiment of the present application, taken along the AA' direction in FIG. 1. The touch panel 100 according to the embodiment of the present application includes a plurality of touch electrode blocks 1 and a plurality of touch wirings 4. The touch wirings 4 are configured to input a driving signal to the touch electrode block 1. Each touch electrode block 1 includes a first conductive layer 2 and a second conductive layer 3 that are stacked. A first insulating layer 20 is provided between the first conductive layer 2 and the second conductive layer 3. Each The first conductive layer 2 and the second conductive layer 3 of the touch electrode block 1 are electrically connected, each touch wiring 4 includes a first wiring layer 41 and a second wiring layer 42 which are stacked, a second insulating layer 30 is provided between the first wiring layer 41 and the second wiring layer 42, the first wiring layer 41 and the second wiring layer 42 of each touch wiring 4 are electrically connected, the first conductive layer 2 and the first wiring layer 41 are provided in the same layer, the second conductive layer 3 and the second wiring layer 42 are provided in the same layer, and the first insulating layer 20 and the second insulating layer 30 are provided in the same layer.

[0011] The display panel may include a light-emitting unit, and the touch panel 100 may be provided on the light-emitting side of the light-emitting unit. The touch panel 100 may include a plurality of touch electrode blocks 1, and during touch detection, the driving IC 600 transmits a touch signal, which may be a pulse signal, to the touch electrode block 1 to charge the touch electrode block 1, and detects the capacitance value of the touch electrode block 1 in real time. When a finger approaches the touch panel 100, a touch capacitance is formed between each touch electrode block 1 and the finger approaching the touch panel 100, and the driving IC 600 detects the change in capacitance of each touch electrode block 1, thereby realizing detection of the touch position of the finger. Each touch electrode block 1 includes a first conductive layer 2 and a second conductive layer 3 which are stacked, and the first conductive layer 2 and the second conductive layer 3 of each touch electrode block 1 are electrically connected. Therefore, for touch electrode blocks 1 of the same area, when a touch electrode block including two conductive layers is compared with a touch electrode block including a single conductive layer, the electrical connection of the two conductive layers stacked corresponds to the parallel connection of the two conductive layers of the touch electrode block. By reducing the resistance of the touch electrode block 1 including two conductive layers, the requirement for the driving capability of the driving IC 600 is reduced so that the touch panel can adopt the same driving IC as the display panel, thereby reducing the cost of the touch panel, reducing the cost of the touch display device, and reducing the space that needs to be occupied by the touch panel in the touch display device, which is advantageous for reducing the volume of the touch display device.

[0012] 1 and 3, the touch wiring 4 is configured to input a driving signal to the touch electrode block 1, and the touch wiring 4 includes two wiring layers, and the first wiring layer 41 and the second wiring layer 42 of each touch wiring 4 are electrically connected. Therefore, for touch wiring 4 of the same width, when a touch wiring including two wiring layers is compared with a touch wiring including a single wiring layer, the electrical connection of the two stacked wiring layers corresponds to the parallel connection of the two wiring layers of the touch wiring, which can reduce the resistance of the touch wiring 4, reduce the requirements for the driving ability of the driving IC, and reduce the difficulty of touch driving. In addition, since the touch wiring 4 has a small resistance, the voltage drop of the signal transmitted by the touch wiring 4 can be reduced, signal loss can be reduced, and the touch sensitivity of the touch panel can be improved.

[0013] 1 and 3, the first conductive layer 2 and the first wiring layer 41 are provided in the same layer, the second conductive layer 3 and the second wiring layer 42 are provided in the same layer, and the first insulating layer 20 and the second insulating layer 30 are provided in the same layer, on the one hand, the facing area between the touch electrode block 1 and the touch wiring 4 connected to another touch electrode block 1 is greatly reduced, the parasitic capacitance between the touch electrode block 1 and the touch wiring 4 connected to another touch electrode block 1 is effectively reduced, and the touch effect of the touch panel is improved. On the other hand, the first conductive layer 2 and the first wiring layer 41 are provided in the same layer, and the second conductive layer 3 and the second wiring layer 42 are provided in the same layer, making the touch panel thinner and reducing the space occupied by the touch panel, which is advantageous for realizing a thinner touch display device.

[0014] The touch panel of this embodiment includes a first conductive layer and a second conductive layer which are stacked on each touch electrode block, and the first conductive layer and the second conductive layer of each touch electrode block are electrically connected to reduce the resistance of each touch electrode block, and the first wiring layer and the second wiring layer of each touch wiring are electrically connected to reduce the resistance of the touch wiring, which reduces the requirements for the driving capability of the touch driving IC so that the touch panel can adopt the same driving IC as the display panel, thereby reducing the cost of the touch panel, reducing the cost of the touch display device, and reducing the space that needs to be occupied by the touch panel in the touch display device, which is advantageous in reducing the volume of the touch display device. Furthermore, by providing the first conductive layer and the first wiring layer in the same layer, the second conductive layer and the second wiring layer in the same layer, and the first insulating layer and the second insulating layer in the same layer, the facing area between the touch electrode block and the touch wiring connected to another touch electrode block is significantly reduced, effectively reducing the parasitic capacitance between the touch electrode block and the touch wiring connected to another touch electrode block, and improving the touch effect of the touch panel.

[0015] FIG. 4 is a structural schematic diagram of yet another touch panel according to an embodiment of the present application. FIG. 5 is an enlarged schematic diagram of a touch panel according to an embodiment of the present application along region C in FIG. 4. Based on the above embodiment, and in conjunction with FIG. 1, FIG. 4 and FIG. 5, a plurality of touch electrode blocks 1 arranged sequentially along the second direction N2 constitute a touch electrode row 10, and a plurality of touch electrode rows 10 are arranged sequentially along the first direction N1, in which the second direction N2 and the first direction N1 cross each other, each touch electrode block 1 includes at least one opening 5 extending along the second direction N2, the touch wiring 4 extends along the second direction N2, and each touch wiring 4 passes through at least one opening 5, each touch electrode block 1 includes at least one jumper wire 6, and the jumper wire 6 is configured to electrically connect the regions located on both sides of the opening 5 of the touch electrode block 1. FIG. 4 exemplarily illustrates a situation in which the second direction N2 and the first direction N1 are perpendicular to each other, but is not limited thereto.

[0016] Each touch wiring 4 starts extending from at least the touch electrode block 1 electrically connected thereto as a starting point, and extends to the driving IC 600. The touch wiring 4 is provided to penetrate a plurality of touch electrode blocks 1, i.e., to be located in the same area as the touch electrode block 1, so that the total area of ​​the touch area and the wiring area of ​​the touch panel can be reduced, the area of ​​the touch panel can be reduced, and the area occupied by the touch panel in the touch display device can be reduced. In general, in the touch display device, the touch electrode block 1 is located in the display area of ​​the touch display device, but the embodiment of the present application allows both the touch wiring 4 and the touch electrode block 1 to be provided in the display area, so that the touch wiring 4 does not need to occupy the frame area, which saves the wiring space in the frame area of ​​the touch display device and is favorable for realizing a narrow frame of the touch display device. The touch wiring 4 extends along the second direction N2, and each touch wiring 4 penetrates at least one opening 5, thereby significantly reducing the facing area between the touch electrode block 1 and the touch wiring 4 connected to another touch electrode block 1, effectively reducing the parasitic capacitance between the touch electrode block 1 and the touch wiring 4 connected to another touch electrode block 1, and improving the touch accuracy of the touch panel.

[0017] In some embodiments, the number of openings 5 ​​included in the multiple touch electrode blocks 1 is the same, and the number of openings 5 ​​through which the multiple touch wires 4 penetrate is the same.

[0018] Referring to FIG. 4, each touch wiring 4 extends from the first touch electrode block 1 in the touch electrode row 10 to the last touch electrode block 1, the number of touch electrode blocks 1 through which the multiple touch wirings 4 pass is the same, and the number of touch wirings 4 penetrating through the multiple touch electrode blocks 1 is the same. When a finger touches the touch panel, although the relative area between the touch wiring 4 and the finger is much smaller than the relative area between the touch electrode block 1 and the finger, a certain capacitance is still formed between the touch wiring 4 and the finger, which interferes with touch detection. By setting the number of touch wirings 4 passing through the multiple touch electrode blocks 1 to be the same, the interference signal to each touch electrode block 1 by the touch wiring 4 is the same, and the interference signal can be filtered and removed by noise processing in the later stage, thereby improving the touch detection accuracy. In addition, each touch wiring 4 overlaps with the touch electrode block 1 only by the jumper wire 6, which greatly reduces the parasitic capacitance between the touch wiring 4 and the touch electrode block 1 other than the jumper wire 6, thereby improving the touch accuracy of the touch panel.

[0019] FIG. 6 is a schematic cross-sectional view of one touch panel according to an embodiment of the present application taken along the BB' direction in FIG. 4. Based on the above embodiment, referring to FIG. 6, the jumper wire 6 and the first conductive layer 2 are provided in the same layer, and the part of the touch wiring 4 overlapping with the jumper wire 6 includes the second wiring layer 42. In some embodiments, the part of the touch wiring 4 overlapping with the jumper wire 6 includes only the second wiring layer 42. Alternatively, FIG. 7 is a schematic cross-sectional view of another touch panel according to an embodiment of the present application taken along the BB' direction in FIG. 4. Based on the above embodiment, referring to FIG. 7, the jumper wire 6 and the second conductive layer 3 are provided in the same layer, and the part of the touch wiring 4 overlapping with the jumper wire 6 includes the first wiring layer 41. In some embodiments, the part of the touch wiring 4 overlapping with the jumper wire 6 includes only the first wiring layer 41.

[0020] There is no need to provide any other film layer, and by reserving wiring space for the jumper wire 6 in the first wiring layer 41 or the second wiring layer 42 of the touch wiring 4 in advance, electrical connection is realized in the areas on both sides of the opening 5 of the touch electrode block 1, and the touch panel is ensured to have a small thickness.

[0021] 8 is a structural schematic diagram of another touch panel according to an embodiment of the present application. Based on the above embodiment, referring to FIG. 8, the first conductive layer, the second conductive layer, the first wiring layer and the second wiring layer all include a metal mesh layer.

[0022] By configuring in this way, the resistance of the touch electrode block 1 and the touch wiring 4 can be reduced, the requirements for the driving ability of the driving IC can be reduced, and the signal loss in the touch electrode block 1 and the touch wiring 4 can be reduced. In addition, the touch electrode block 1 and the touch wiring 4 adopt a metal mesh, and the mesh position of the touch electrode block 1 and the touch wiring 4 can be located in the area between the adjacent light emitting units, so as to prevent the touch electrode block from blocking the light emission of the light emitting unit of the touch display device, and to ensure that the touch display device has a good display effect.

[0023] 9 is an enlarged schematic diagram of a D region in FIG. 8 of one touch panel according to an embodiment of the present application. FIG. 10 is a schematic cross-sectional view along the CC' direction in FIG. 8 of one touch panel according to an embodiment of the present application. Based on the above embodiment, in relation to FIG. 9 and FIG. 10, the first conductive layer 2 and the second conductive layer 3 of each touch electrode block 1 each include a plurality of first mesh lines 7 extending along the third direction N3 and a plurality of second mesh lines 9 intersecting the plurality of first mesh lines 7, the plurality of first mesh lines 7 of the first conductive layer 2 and the second conductive layer 3 of each touch electrode block 1 are electrically connected through via holes 8, the plurality of second mesh lines 9 of the first conductive layer 2 and the second conductive layer 3 of each touch electrode block 1 are electrically connected through via holes 8, adjacent first mesh lines 7 are connected through the second mesh lines 9, and the first mesh lines 7 of each touch wiring 4 are electrically connected through the via holes 8. wiring layer 41 and 2 wiring layerEach of the touch wirings 42 includes a plurality of third mesh lines 50 extending along the third direction N3 and a plurality of fourth mesh lines 60 intersecting the plurality of third mesh lines 50. wiring layer 41 and 2 wiring layer The plurality of third mesh wires 50 of 42 are electrically connected through the via holes 40, and the first wiring layer 41 and 2 wiring layer The multiple fourth mesh wires 60 of 42 are electrically connected through via holes 40 , and adjacent third mesh wires 50 are connected through the fourth mesh wires 60 .

[0024] The third direction N3 may be the same as the first direction N1, or the third direction N3 may be different from the first direction N1. The first mesh line 7 and / or the third mesh line 50 may be a straight line, a bent line, or a curved line, and the first mesh line 7 and the third mesh line 50 may extend along the third direction N3 as a whole. Exemplarily, the first mesh line 7 and the third mesh line 50 may conform to the boundary shape of the light-emitting unit of the touch display device and may not overlap with the vertical projection of the light-emitting unit. The second mesh line 9 intersecting the first mesh line 7 and the fourth mesh line 60 intersecting the third mesh line 50 may conform to the boundary shape of the light-emitting unit of the touch display device and may not overlap with the vertical projection of the light-emitting unit.

[0025] Illustratively, FIG. 11 is a schematic diagram of a first mesh line of a touch panel according to an embodiment of the present application. FIG. 12 is a schematic diagram of a first mesh line of another touch panel according to an embodiment of the present application. FIG. 13 is a schematic diagram of a first mesh line of yet another touch panel according to an embodiment of the present application. FIG. 14 is a schematic diagram of a first mesh line of yet another touch panel according to an embodiment of the present application. In FIGS. 11 to 14, one pixel arrangement of a light-emitting unit is illustratively shown. With reference to those in FIGS. 11 to 14, the thick solid lines and the thick dashed lines can represent touch electrode blocks, the thick solid lines extending along the third direction N3 can represent the first mesh lines 7, the thick solid lines connecting between adjacent first mesh lines 7 can represent the second mesh lines 9, the touch wiring 4 is a thin solid line, and the dashed lines between the thin solid lines represent the jumper lines 6. In FIGS. 11 to 14, the second mesh lines 9 are in the same layer as the first conductive layer 2 or the second conductive layer 3. The first mesh wire 7 and the second mesh wire 9 include two layers, a first conductive layer 2 and a second conductive layer 3. When the first mesh wire 7 and the second mesh wire 9 are both arranged to include two conductive layers in this manner, for a first mesh wire 7 of the same width, when a first mesh wire including two conductive layers is compared with a first mesh wire including a single conductive layer, the electrical connection of the two stacked conductive layers corresponds to the parallel connection of the two conductive layers of the first mesh wire 7, reducing the resistance of the first mesh wire 7. Similarly, the second mesh wire 9 includes two layers, a first conductive layer 2 and a second conductive layer 3, thereby also reducing the resistance of the second mesh wire 9 and further reducing the resistance of the touch electrode block 1.

[0026] 10 to 14, the first wiring layer 41 and 2 wiring layer Each of the touch wirings 42 includes a plurality of third mesh lines 50 extending along the third direction N3 and a plurality of fourth mesh lines 60 intersecting the plurality of third mesh lines 50. wiring layer 41 and 2 wiring layer The plurality of third mesh wires 50 of the touch wiring 4 are electrically connected through via holes. wiring layer 41 and 2 wiring layerThe multiple fourth mesh wires 60 of 42 are electrically connected via via holes, and adjacent third mesh wires 50 are connected via the fourth mesh wires 60. In this way, when the third mesh wires 50 and the fourth mesh wires 60 are both provided to include two wiring layers, when comparing a third mesh wire including two wiring layers with a third mesh wire including a single wiring layer for the same width of the third mesh wires 50, the electrical connection of the two layers of third mesh wires provided in a stacked manner corresponds to the parallel connection of the two wiring layers of the touch wiring, and the resistance of the third mesh wires 50 can be reduced. Similarly, the fourth mesh wires 60 are provided in a first wiring layer 41 and 2 wiring layer 42, which also reduces the resistance of the fourth mesh wire 60, and further reduces the resistance of the touch wire 4, thereby reducing the requirements for the driving ability of the driving IC, and making the touch driving difficult. In addition, since the touch wire 4 has a small resistance, the voltage drop of the signal transmitted through the touch wire 4 can be reduced, signal loss can be reduced, and the touch sensitivity of the touch panel can be improved.

[0027] FIG. 15 is a schematic diagram of a first conductive layer of a touch panel according to an embodiment of the present application. FIG. 16 is a schematic diagram of a second conductive layer of a touch panel according to an embodiment of the present application. FIG. 16 exemplarily shows that the jumper wire 6 and the second conductive layer 3 are provided in the same layer, and FIG. 15 exemplarily shows a situation in which the part of the touch wiring 4 overlapping with the jumper wire 6 only includes the first wiring layer 41. Based on the above embodiment, in relation to FIG. 10 to FIG. 16, the first mesh wire 7 and the second mesh wire 9 adjacent to each other along the second direction N2 are electrically connected in sequence to form a fifth mesh wire 70, at least two fifth mesh wires 70 are included between two adjacent openings along the first direction N1, and the third mesh wire 50 and the fourth mesh wire 60 adjacent to each other along the second direction N2 are electrically connected in sequence to form a sixth mesh wire 80, and each touch wiring 4 includes at least two sixth mesh wires 80.

[0028] FIG. 11 exemplarily shows an arrangement situation in which the fifth mesh line 70 of one touch electrode block is included between the sixth mesh lines 80 of two adjacent touch wirings. In this way, the touch wirings 4 and the touch electrode blocks are alternately arranged, and the touch wirings 4 and the touch electrode blocks are located in the same area, so that the total area of ​​the touch area and wiring area of ​​the touch panel is reduced, the area of ​​the touch panel is reduced, and the area occupied by the touch panel in the touch display device is reduced, allowing both the touch wirings 4 and the touch electrode blocks to be arranged in the display area, and the touch wirings 4 do not need to occupy the frame area, saving the wiring space in the frame area of ​​the touch display device, which is favorable for realizing a narrow frame of the touch display device. The facing area between the touch electrode block and the touch wirings 4 connected to other touch electrode blocks is greatly reduced, effectively reducing the parasitic capacitance between the touch electrode block and the touch wirings 4 connected to other touch electrode blocks, and improving the touch accuracy of the touch panel.

[0029] 12 exemplarily shows an arrangement in which three fifth mesh wires 70 of a touch electrode block are included between two adjacent sixth mesh wires 80 of touch wirings. When provided in this manner, the three fifth mesh wires 70 of the touch electrode block between the six mesh wires 80 of two adjacent touch wirings are electrically connected to each other, and compared with the arrangement shown in FIG. 11, the covering area of ​​the touch electrode block between the six mesh wires 80 of the two adjacent touch wirings is made larger, and the three adjacent fifth mesh wires 70 are connected in parallel, thereby reducing the resistance of the touch electrode block.

[0030] 13 exemplarily shows an arrangement in which four fifth mesh wires 70 of a touch electrode block are included between two adjacent sixth mesh wires 80 of touch wirings. When provided in this manner, the four fifth mesh wires 70 of the touch electrode block between the sixteenth mesh wires 80 of two adjacent touch wirings are electrically connected to each other, and compared with the arrangement shown in FIG. 11 or 12, the covering area of ​​the touch electrode block between the sixteenth mesh wires 80 of two adjacent touch wirings is made larger, and the four adjacent fifth mesh wires 70 are connected in parallel, thereby reducing the resistance of the touch electrode block.

[0031] 14 exemplarily shows an arrangement in which the sixth mesh wires 80 of two adjacent touch wirings are connected in parallel to form one group of touch wirings, and two fifth mesh wires 70 of the touch electrode block are included between each of the two adjacent groups of touch wirings. When provided in this manner, the two fifth mesh wires 70 of the touch electrode block between each of the two adjacent groups of touch wirings are connected in parallel, and compared to the arrangement shown in FIG. 11, FIG. 12, or FIG. 13, the two sixth mesh wires 80 of the touch wirings are connected in parallel, which reduces the resistance of the touch wirings.

[0032] 10, 11, 15, and 16, the first conductive layer 2 and the second conductive layer 3 of the first mesh wire 7 of each touch electrode block 1 are electrically connected through a via hole 8, and the via hole 8 in the first mesh wire 7 may be provided at any position of the first mesh wire 7. The first wiring layer 41 and the second wiring layer 42 of each touch wiring 4 are electrically connected through a via hole 40. Each touch electrode block 1 and the touch wiring 4 connected thereto are connected by providing a via hole in a jumper wire 6. The jumper wire 6 and the second conductive layer 3 are provided in the same layer, and the part of the touch wiring 4 overlapping with the jumper wire 6 includes only the first wiring layer 41, while the facing area between the touch electrode block 1 and the touch wiring 4 connected to the other touch electrode block 1 is only the area of ​​the jumper wire 6, so that the facing area between the touch electrode block 1 and the touch wiring 4 connected to the other touch electrode block 1 is significantly reduced in the area other than the area of ​​the jumper wire 6, effectively reducing the parasitic capacitance between the touch electrode block 1 and the touch wiring 4 connected to the other touch electrode block 1, and improving the touch accuracy of the touch panel. On the other hand, the jumper wire 6 and the second conductive layer 3 are provided in the same layer, increasing the area of ​​the second conductive layer 3 of the touch electrode block 1, increasing the touch capacitance formed between the touch electrode block 1 and a finger approaching the touch panel, and improving the touch effect of the touch panel.

[0033] In some embodiments, still referring to FIG. 8 , each touch wire 4 is electrically connected to one touch electrode block 1 , and one touch electrode block 1 is electrically connected to at least one touch wire 4 .

[0034] Each touch wiring 4 is electrically connected to one touch electrode block 1, allowing each touch wiring 4 to input a driving signal to the touch electrode block 1 electrically connected thereto, and during touch detection, the driving IC 600 transmits a touch signal, which may be a pulse signal, to the touch electrode block 1 electrically connected to the touch wiring 4 via the touch wiring 4 to charge the touch electrode block 1, and detects the capacitance value in the touch electrode block 1 in real time. When a finger approaches the touch panel 100, a touch capacitance is formed between each touch electrode block 1 and the finger approaching the touch panel 100, and the driving IC 600 detects the change in capacitance in each touch electrode block 1 via the touch wiring 4, thereby realizing detection of the touch position of the finger. Each touch wiring 4 is electrically connected to one touch electrode block 1, which can avoid signal crosstalk and improve the touch effect of the touch panel. When one touch electrode block 1 is arranged to be electrically connected to at least one touch wiring 4, one touch electrode block 1 may be electrically connected to one touch wiring 4, or may be connected to two or three touch wirings 4, thereby avoiding disconnection of the touch wiring connected to the touch electrode block and improving the reliability of touch of the touch panel.

[0035] 17 is a structural schematic diagram of a touch display device according to an embodiment of the present application. Based on the above embodiments, referring to FIG. 17, a touch display device 400 according to an embodiment of the present application includes a display panel 200 and a touch panel 100 provided in any of the above embodiments, which are stacked together, the display panel 200 includes a display area 300, and a touch electrode block 1 is provided corresponding to the display area 300.

[0036] 18 is a schematic cross-sectional view of a touch panel according to an embodiment of the present application taken along the direction DD' in FIG. 15. The display panel 200 includes a plurality of light-emitting units 500, and the vertical projections of the touch electrode blocks 1 and the touch wirings 4 on the display panel 200 do not overlap with the light-emitting units 500.

[0037] Because the touch wiring 4 penetrates the opening of the touch electrode block 1, the touch wiring 4 and the touch electrode block 1 are both disposed in the display area 300 of the display panel 200, and the vertical projection of the touch electrode block 1 and the touch wiring 4 on the display panel 200 does not overlap with the light-emitting unit 500, so that the touch electrode block 1 and the touch wiring 4 do not affect the light emission of the light-emitting unit 500. The touch display device according to the embodiment of the present application may include a mobile phone, a tablet, a wearable device, etc.

[0038] 17 and 18, the touch display device 400 further includes a driving IC 600, which is configured to drive the display panel 200 to display a screen, and the driving IC 600 is further configured to send a driving signal to the touch electrode block 1 of the touch panel 100 and receive a sensing signal in the touch electrode block 1.

[0039] The touch panel of this embodiment includes a first conductive layer and a second conductive layer which are stacked on each touch electrode block, and the first conductive layer and the second conductive layer of each touch electrode block are electrically connected to each other, thereby reducing the resistance of each touch electrode block, and reducing the requirements for the driving capability of the touch driving IC so that the touch panel can adopt the same driving IC as the display panel, thereby reducing the cost of the touch panel, reducing the cost of the touch display device, and reducing the space that needs to be occupied by the touch panel in the touch display device, which is advantageous in reducing the volume of the touch display device.

Claims

1. A plurality of touch electrode blocks each including a first conductive layer and a second conductive layer that are stacked and electrically connected to each other with a first insulating layer provided therebetween; A plurality of touch wirings are configured to input a drive signal to the touch electrode block, each of which includes a first wiring layer and a second wiring layer that are laminated and electrically connected to each other with a second insulating layer provided therebetween; the first conductive layer and the first wiring layer are provided in the same layer, the second conductive layer and the second wiring layer are provided in the same layer, and the first insulating layer and the second insulating layer are provided in the same layer, The touch electrode blocks sequentially arranged along a plurality of second directions constitute a touch electrode row, and the plurality of touch electrode rows are sequentially arranged along a first direction, and the second direction and the first direction cross each other, The touch electrode block further includes at least one opening extending along a second direction, the touch wiring extends along the second direction, and the touch wiring passes through the at least one opening; The touch electrode block further includes at least one jumper wire, and the jumper wire is configured to electrically connect regions located on both sides of the opening of the touch electrode block. Touch panel.

2. The number of openings included in the plurality of touch electrode blocks is the same, and the number of openings through which the plurality of touch wirings penetrate is the same. The touch panel according to claim 1 .

3. the jumper line and the first conductive layer are provided in the same layer, and a portion of the touch wiring that overlaps with the jumper line includes a second wiring layer; Alternatively, the jumper line and the second conductive layer are provided in the same layer, and a portion of the touch wiring that overlaps with the jumper line includes a first wiring layer. The touch panel according to claim 1 .

4. the first conductive layer, the second conductive layer, the first wiring layer, and the second wiring layer all include cross line layers; the cross-line layer is a metal mesh layer; The first conductive layer and the second conductive layer of each touch electrode block include a plurality of first mesh lines extending along a third direction and a plurality of second mesh lines intersecting the plurality of first mesh lines, and adjacent first mesh lines are connected via the second mesh lines; The first wiring layer and the second wiring layer of each touch wiring include a plurality of third mesh lines extending along a third direction and a plurality of fourth mesh lines intersecting the plurality of third mesh lines, and adjacent third mesh lines are connected via the fourth mesh lines. The touch panel according to claim 1 .

5. the first conductive layer of each touch electrode block and at least one of the plurality of first mesh wires and the plurality of second mesh wires of the second conductive layer are electrically connected to each other through via holes; The first wiring layer of each touch wiring and at least one of the plurality of third mesh wires and the plurality of fourth mesh wires of the second wiring layer are electrically connected to each other through a via hole. The touch panel according to claim 4.

6. the third direction is the same as the first direction, Or, the third direction is different from the first direction, Or, at least one of the first mesh line and the third mesh line is a straight line, a broken line, or a curved line. The touch panel according to claim 4.

7. the first mesh line and the third mesh line are aligned with the boundary shape of the light emitting unit of the touch display device, and do not overlap with the vertical projection of the light emitting unit of the touch display device; or the second mesh line and the fourth mesh line are aligned with the boundary shape of the light emitting unit of the touch display device, and do not overlap with the vertical projection of the light emitting unit of the touch display device; The touch panel according to claim 4.

8. the first mesh wire and the second mesh wire adjacent to each other along the second direction are sequentially electrically connected to each other to form a fifth mesh wire, and at least two fifth mesh wires are included between two openings adjacent to each other along the first direction; The third mesh line and the fourth mesh line adjacent to each other along the second direction are sequentially electrically connected to form a sixth mesh line, and each touch wiring includes at least two sixth mesh lines; Alternatively, the first conductive layer and the second conductive layer of the first mesh wire of each touch electrode block are electrically connected through a via hole located in the first mesh wire; Alternatively, each touch electrode block and a touch wiring connected to each touch electrode block are connected by providing a via hole in the jumper wire. The touch panel according to claim 4.

9. Each touch wiring is electrically connected to one touch electrode block, One touch electrode block is electrically connected to at least one touch wiring; The touch panel according to claim 1 .

10. A display panel including a display area provided by stacking, and the touch panel according to any one of claims 1 to 9, wherein a plurality of touch electrode blocks are provided corresponding to the display area. Touch display device.

11. The display panel includes a plurality of light-emitting units; The vertical projection of the plurality of touch electrode blocks and the plurality of touch wirings in the touch panel on the display panel does not overlap with the plurality of light emitting units; A driving integrated circuit chip IC is configured to drive the display panel to display a screen, and further configured to transmit a driving signal to a touch electrode block of the touch panel and receive a sensing signal in the touch electrode block. The touch display device according to claim 10.

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