Display panel and display device

Abstract

A display panel and a display device, relating to the technical field of display. The display panel comprises a display substrate (10) and a touch substrate (20); the touch substrate (20) comprises a plurality of first touch units (201), second touch units (202), third touch units (203), and fourth touch units (204); the first touch units (201) each comprise a plurality of first touch electrodes (541) sequentially connected in a first direction; the second touch units (202) each comprise a plurality of second touch electrodes (542) sequentially connected in the first direction, and input signals of the second touch units (202) and input signals of the first touch units (201) have opposite signs; the third touch units (203) each comprise a plurality of third touch electrodes (543) sequentially connected in a second direction, and the third touch electrodes (543) and the first touch electrodes (541) form first touch capacitors; and the fourth touch units (204) each comprise a plurality of fourth touch electrodes (544) sequentially connected in the second direction, and the fourth touch electrodes (544) and the second touch electrodes (542) form second touch capacitors. The noise of touch signals of the display panel is relatively low.

Description

Display panel and display device

[0001] Cross-references

[0002] This disclosure claims priority to Chinese patent application number 202311246176.0, filed on September 25, 2023, entitled “Display Panel and Display Device,” and the entire contents of this Chinese patent application are incorporated herein by reference. Technical Field

[0003] The present disclosure relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0004] Organic Light-Emitting Display (OLED) display substrates have become a mainstream development in the display technology field due to their advantages such as self-luminescence, high brightness, excellent image quality, and low energy consumption. However, a touch screen pane (TSP) is installed on the display surface of the display substrate. This touch screen pane can easily generate noise between the display substrate and the touch screen, thus affecting the touch performance of the touch screen pane.

[0005] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute prior art known to ordinary technicians in the field.

[0006] Summary of the Invention

[0007] The purpose of the present disclosure is to overcome the above-mentioned deficiencies of the prior art and to provide a display panel and a display device.

[0008] According to one aspect of the present disclosure, there is provided a display panel, comprising:

[0009] display substrate;

[0010] A touch control substrate is provided on the light-emitting side of the display substrate, and the touch control substrate includes:

[0011] a plurality of first touch control units, each of the first touch control units comprising a plurality of first touch control electrodes sequentially connected along a first direction;

[0012] a plurality of second touch control units, each of the second touch control units comprising a plurality of second touch control electrodes sequentially connected along the first direction, wherein input signals of the second touch control units are opposite in sign to input signals of the first touch control units;

[0013] a plurality of third touch units, each of the third touch units comprising a plurality of third touch electrodes sequentially connected along a second direction, the third touch electrodes forming a first touch capacitor with the first touch electrodes, and the second direction intersecting the first direction;

[0014] A plurality of fourth touch control units, each of which includes a plurality of fourth touch control electrodes sequentially connected along a second direction, and each of the fourth touch control electrodes and the second touch control electrodes forms a second touch control capacitor.

[0015] In an exemplary embodiment of the present disclosure, an absolute value of the input signal of the second touch control unit is the same as an absolute value of the input signal of the first touch control unit.

[0016] In an exemplary embodiment of the present disclosure, the touch substrate includes:

[0017] A base layer, provided on the light-emitting side of the display substrate;

[0018] A first touch layer is provided on a side of the base layer facing away from the display substrate, the first touch layer comprising a first bridge portion and a second bridge portion, and / or a third bridge portion and a fourth bridge portion;

[0019] a touch insulating layer, disposed on a side of the first touch layer facing away from the base layer, the touch insulating layer being provided with a plurality of first via holes, a plurality of second via holes, and / or a plurality of third via holes, and a plurality of fourth via holes;

[0020] a second touch layer, provided on a side of the touch insulation layer facing away from the base layer, the second touch layer comprising the first touch electrode, the second touch electrode, the third touch electrode, and the fourth touch electrode;

[0021] In which, the first bridge portion is connected to two adjacent first touch electrodes in the first direction through the first via hole, and the second bridge portion is connected to two adjacent second touch electrodes in the first direction through the second via hole; and / or the third bridge portion is connected to two adjacent third touch electrodes in the second direction through the third via hole, and the fourth bridge portion is connected to two adjacent fourth touch electrodes in the second direction through the fourth via hole.

[0022] In an exemplary embodiment of the present disclosure, the display panel has a display area and a non-display area located on at least one side of the display area; the display panel further includes:

[0023] A touch driver chip is provided in the non-display area, and the touch driver chip is electrically connected to the first touch unit, the second touch unit and the touch sensing lead;

[0024] The orthographic projection area of ​​the first via hole on the base layer increases with increasing distance from the touch driver chip, and the orthographic projection area of ​​the second via hole on the base layer increases with increasing distance from the touch driver chip.

[0025] In an exemplary embodiment of the present disclosure, the display panel has a display area and a non-display area located on at least one side of the display area; the display panel further includes:

[0026] a touch driver chip, disposed in the non-display area and located on one side of the display area in a first direction, the touch driver chip being electrically connected to the first touch unit, the second touch unit, and the touch sensing lead;

[0027] The touch substrate includes at least two first touch areas, and the at least two first touch areas are arranged sequentially along the first direction. The orthographic projection areas of the first via holes located in the same first touch area on the base layer are the same, and the orthographic projection areas of the second via holes located in the same first touch area on the base layer are the same. The orthographic projection areas of the first via holes located in different first touch areas on the base layer increase as the distance between the first touch area and the touch driver chip increases, and the orthographic projection areas of the second via holes located in different first touch areas on the base layer increase as the distance between the first touch area and the touch driver chip increases.

[0028] In an exemplary embodiment of the present disclosure, the first via holes connected to the same first bridge portion have the same orthographic projection area on the base layer, and the second via holes connected to the same second bridge portion have the same orthographic projection area on the base layer.

[0029] In an exemplary embodiment of the present disclosure, the orthographic projection area of ​​the third via hole on the base layer increases as the distance from the access end of the touch sensing lead increases, and the orthographic projection area of ​​the fourth via hole on the base layer increases as the distance from the access end of the touch sensing lead increases.

[0030] In an exemplary embodiment of the present disclosure, the third via holes connected to the same third bridge portion have the same orthographic projection area on the base layer, and the fourth via holes connected to the same fourth bridge portion have the same orthographic projection area on the base layer.

[0031] In an exemplary embodiment of the present disclosure, the touch sensing lead is connected to one side of the third touch unit and the fourth touch unit in the second direction, the touch substrate includes at least two second touch areas, and the at least two second touch areas are arranged sequentially along the second direction. The orthographic projection areas of the third via holes located in the same second touch area on the base layer are the same, and the orthographic projection areas of the fourth via holes located in the same second touch area on the base layer are the same. The orthographic projection areas of the third via holes located in different second touch areas on the base layer increase as the distance between the second touch area and the access end of the touch sensing lead increases, and the orthographic projection areas of the fourth via holes located in different second touch areas on the base layer increase as the distance between the second touch area and the access end of the touch sensing lead increases.

[0032] In an exemplary embodiment of the present disclosure, the second touch electrodes and the first touch electrodes are alternately arranged in the first direction, and the first touch electrodes include:

[0033] Two first touch sub-electrodes are arranged in sequence along the second direction, with an interval between the two first touch sub-electrodes;

[0034] A first connecting portion connected between the two first touch sub-electrodes;

[0035] The second touch electrode includes:

[0036] Two second touch sub-electrodes are arranged in sequence along the second direction, and the two second touch sub-electrodes are spaced apart;

[0037] The second connecting portion is connected between the two second touch sub-electrodes.

[0038] In an exemplary embodiment of the present disclosure, the second touch layer further includes:

[0039] a first connecting wire, spaced between two of the first touch sub-electrodes, one end of the first connecting wire connected to the second connecting portion, and the other end of the first connecting wire connected to the second bridging portion, so as to connect two adjacent second touch electrodes in a first direction;

[0040] A second connecting wire is arranged between two second touch sub-electrodes, one end of the second connecting wire is connected to the first connecting portion, and the other end of the second connecting wire is connected to the first bridging portion to connect two adjacent first touch electrodes in the first direction.

[0041] In an exemplary embodiment of the present disclosure, the second touch electrodes and the first touch electrodes are staggered, and the first touch units and the second touch units are alternately arranged in the second direction.

[0042] In an exemplary embodiment of the present disclosure, at least two adjacent third touch units form a group, and a group of the third touch units and a row of multiple first touch electrodes arranged along the second direction form multiple first touch capacitors; at least two adjacent fourth touch units form a group, and a group of the fourth touch units and a row of multiple second touch electrodes arranged along the second direction form multiple second touch capacitors.

[0043] In an exemplary embodiment of the present disclosure, one of the third touch electrodes is spaced apart from and adjacent to two adjacent first touch electrodes to form the first touch capacitor; and one of the fourth touch electrodes is spaced apart from and adjacent to two adjacent second touch electrodes to form the second touch capacitor.

[0044] In an exemplary embodiment of the present disclosure, the touch substrate further includes a plurality of touch sensing leads, a plurality of first touch driving leads, and a plurality of second touch driving leads; each of the first touch driving leads is connected to one end of the first touch unit, and each of the second touch driving leads is connected to one end of the second touch unit; alternatively, two of the first touch driving leads are correspondingly connected to opposite ends of the first touch unit, and two of the second touch driving leads are correspondingly connected to opposite ends of the second touch unit;

[0045] Each of the touch sensing leads is connected to at least the adjacent third touch unit and the fourth touch unit.

[0046] In an exemplary embodiment of the present disclosure, the adjacent third touch unit and the fourth touch unit form a group of touch sensing units, and both ends of the touch sensing units in the second direction are connected to the touch sensing leads.

[0047] In an exemplary embodiment of the present disclosure, multiple first touch units are arranged in sequence along the second direction, multiple second touch units are arranged in sequence along the second direction, multiple third touch units are arranged in sequence along the first direction, and multiple fourth touch units are arranged in sequence along the first direction.

[0048] According to another aspect of the present disclosure, a display device is provided, comprising any one of the display panels described above.

[0049] In the display panel disclosed herein, the input signal of the second touch unit is opposite in sign to the input signal of the first touch unit. When power is applied to the second electrode to implement a display function on the display substrate, a first noise generated by the second electrode and the first touch unit and a second noise generated by the second electrode and the second touch unit are opposite in sign. The first noise and the second noise of opposite sign can at least partially cancel each other out, thereby reducing or even eliminating the noise of the touch signal.

[0050] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification, are used to explain the principles of the present disclosure. Obviously, the drawings described below are only some embodiments of the present disclosure, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0052] FIG1 is a schematic diagram of the area division structure of the display panel disclosed in the present invention.

[0053] FIG. 2 is a schematic structural diagram of the display panel in FIG. 1 after being bent.

[0054] FIG3 is a schematic cross-sectional view of the display region of an exemplary embodiment of the display panel in FIG1 .

[0055] FIG4 is a schematic structural diagram of an exemplary embodiment of a touch substrate in a display panel of the present disclosure.

[0056] FIG5 is a schematic structural diagram of another exemplary embodiment of a touch substrate in a display panel of the present disclosure.

[0057] FIG. 6 is a schematic structural diagram of the first touch electrode and the second touch electrode in FIG. 5 .

[0058] FIG. 7 is a schematic structural diagram of another exemplary embodiment of a touch substrate in a display panel of the present disclosure.

[0059] FIG8 is a schematic structural diagram of the first touch electrode and the second touch electrode in FIG7 .

[0060] FIG. 9 is a schematic structural diagram of an exemplary embodiment of the first bridge portion, the second bridge portion, the first via hole, and the second via hole in FIG. 4 and FIG. 5 .

[0061] FIG. 10 is a schematic structural diagram of an exemplary embodiment of the third bridge portion and the fourth bridge portion and the first and second via holes in FIG. 4 and FIG. 5 .

[0062] FIG. 11 is a schematic structural diagram of another exemplary embodiment of the first bridge portion, the second bridge portion, the first via hole, and the second via hole in FIG. 4 and FIG. 5 .

[0063] FIG. 12 is a schematic structural diagram of another exemplary embodiment of the third bridge portion and the fourth bridge portion and the first and second via holes in FIG. 4 and FIG. 5 .

[0064] Description of reference numerals:

[0065] 10. Display substrate; 20. Touch substrate; 201. First touch unit; 202. Second touch unit; 203. Third touch unit; 204. Fourth touch unit; 205. Touch sensing lead; 206. First touch driving lead; 207. Second touch driving lead;

[0066] 1. Substrate; 2. Driver backplane;

[0067] 3. Light-emitting substrate; 31. First electrode; 32. Pixel definition layer; 33. Light-emitting layer group; 34. Second electrode;

[0068] 4. Encapsulation layer group;

[0069] 51. basal layer;

[0070] 52, first touch layer; 521, first bridge portion; 522, second bridge portion; 523, third bridge portion; 524, fourth bridge portion;

[0071] 53, touch insulating layer; 531, first via hole; 532, second via hole; 533, third via hole; 534, fourth via hole;

[0072] 54, second touch layer; 541, first touch electrode; 5411, first touch sub-electrode; 5412, first connecting portion; 5413, first recessed portion; 542, second touch electrode; 5421, second touch sub-electrode; 5422, second connecting portion; 5423, second recessed portion; 543, third touch electrode; 544, fourth touch electrode; 545, first connecting wire; 546, second connecting wire;

[0073] 55. Protective layer;

[0074] 6. Display driver chip; 7. Flexible printed circuit board; 8. Touch driver chip;

[0075] AA, display area; AA1, first touch area; AA2, second touch area;

[0076] NA, non-display area; ZB, peripheral area; BEND, bending area; BOD, binding area;

[0077] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0078] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent identical or similar structures, and thus their detailed descriptions will be omitted. Furthermore, the figures are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

[0079] Although relative terms such as "upper" and "lower" are used in this specification to describe the relationship of one illustrated component to another, these terms are used herein for convenience only, such as in accordance with the orientation of the illustrations in the accompanying drawings. It will be understood that if the illustrated device were flipped upside down, the component described as "upper" would become the component "lower." When a structure is referred to as "on" another structure, this may mean that the structure is integrally formed with the other structure, that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via the other structure.

[0080] The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements / components / etc.; the terms "including" and "having" are used to express open-ended inclusion and mean that additional elements / components / etc. may be present in addition to the listed elements / components / etc.; the terms "first", "second" and "third" etc. are used only as labels and are not intended to limit the quantity of their objects.

[0081] In this application, unless otherwise specified or limited, the term "connected" should be understood broadly. For example, "connected" can mean fixed, removable, or integrated; it can be directly connected or indirectly connected through an intermediary. "And / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0082] The exemplary embodiments of the present disclosure provide a display panel, as shown in FIG1 to FIG12 , wherein the display panel may include a display substrate 10 and a touch substrate 20; the touch substrate 20 is provided on the light-emitting side of the display substrate 10, and the touch substrate 20 includes a plurality of first touch units 201, a plurality of second touch units 202, a plurality of third touch units 203, and a plurality of fourth touch units 204; the first touch unit 201 may include a plurality of first touch electrodes 541 sequentially connected along a first direction X; the second touch unit 202 may include a plurality of first touch electrodes 541 sequentially connected along the first direction X; The second touch unit 202 includes a plurality of second touch electrodes 542 connected in sequence along the second direction Y, and the input signal of the second touch unit 202 is opposite in sign to the input signal of the first touch unit 201; the third touch unit 203 may include a plurality of third touch electrodes 543 connected in sequence along the second direction Y, and the third touch electrode 543 forms a first touch capacitor with the first touch electrode 541, and the second direction Y intersects with the first direction X; the fourth touch unit 204 may include a plurality of fourth touch electrodes 544 connected in sequence along the second direction Y, and the fourth touch electrode 544 forms a second touch capacitor with the second touch electrode 542.

[0083] In the display panel disclosed herein, the input signal of the second touch unit 202 is opposite in sign to the input signal of the first touch unit 201. When the display function is implemented on the display substrate 10, when power is applied to the second electrode 34, the first noise generated by the second electrode 34 and the first touch unit 201 and the second noise generated by the second electrode 34 and the second touch unit 202 are opposite in sign. The first noise and the second noise of opposite sign can at least partially cancel each other out, thereby reducing or even eliminating the noise of the touch signal.

[0084] As shown in Figure 1 , the display panel may include a display area AA for displaying images and a non-display area AA for not displaying images. Touch functionality is implemented in the display area AA. The non-display area AA may include a peripheral area ZB, which may be arranged to surround the display area AA. It may also include a bending area BEND for bending and a binding area BOD for binding. The bending area BEND is connected to the peripheral area ZB, and the binding area BOD is connected to the bending area BEND.

[0085] 2 , the display panel may be bent at the bending area BEND, such that the binding area BOD is bent at a side of the display area AA away from the display surface.

[0086] The binding area (BOD) is provided with binding pins, on which external devices can be mounted (or attached). External devices may include a display driver chip 6, a touch driver chip 8, a flexible printed circuit board 7, or a rigid printed circuit board, etc. In addition, chip-on-flex (Chip On Flex, or Chip On Film, COF), connectors, etc. may also be mounted on the binding pins as external devices. One or more external devices can be mounted in the binding area (BOD).

[0087] The touch driver chip 8 can be mounted on the same surface as the display surface of the flexible printed circuit board 7. As shown in FIG2 , when the bending area BEND is bent in reverse, the display driver chip 6 and the touch driver chip 8 are located on the side of the display panel away from the display surface.

[0088] The touch driving chip 8 may be bonded to the flexible printed circuit board 7 by anisotropic conductive adhesive, or may be attached to the flexible printed circuit board 7 by ultrasonic bonding.

[0089] The touch driver chip 8 may include an integrated circuit that drives the touch substrate 20. In one embodiment, the integrated circuit may be a touch driver integrated circuit that generates and provides touch drive signals, but the present invention is not limited thereto. The touch driver chip 8 is connected to the binding pins of the display panel to provide touch drive signals to the binding pins and receive touch sensing signals fed back from the touch substrate 20.

[0090] As shown in Figure 3, the display panel may include a display substrate 10, which may include a base substrate 1, a driving backplane 2, and a light-emitting substrate 3. The driving backplane 2 may drive the light-emitting substrate 3 to emit light. The driving backplane 2 is disposed on one side of the base substrate 1, and the light-emitting substrate 3 is disposed on the side of the driving backplane 2 facing away from the base substrate 1. A touch substrate 20 may be disposed on the light-emitting side of the display substrate 10, that is, on the side of the light-emitting substrate 3 facing away from the base substrate 1. A polarizer may be disposed on the side of the touch substrate 20 facing away from the display substrate 10, and a cover plate may be disposed on the side of the polarizer facing away from the display substrate 10.

[0091] The display substrate 10 can be an OLED (Organic Electroluminescence Display) display substrate 10, a QLED (Quantum Dot Light Emitting Diodes) display substrate 10, a Micro-LED (Micro-light emitting diode) display substrate 10, etc. The display substrate 10 has a light-emitting side and a non-light-emitting side, and the light-emitting side and the non-light-emitting side are arranged opposite to each other. The light-emitting side can display a picture, and the side that displays the picture is the display surface.

[0092] In this example embodiment, taking the OLED display substrate 10 as an example, the driving backplane 2 may include a plurality of switch units, the switch units may include a plurality of thin film transistors, and the plurality of switch units are arranged in an array; a first flat layer is provided on the side of the plurality of switch units away from the base substrate 1, and the first flat layer provides a relatively flat base surface for the subsequently formed film layer.

[0093] A light-emitting substrate 3 is provided on a side of the first flat layer facing away from the base substrate 1 . The light-emitting substrate 3 may include a first electrode 31 , a pixel definition layer 32 , a light-emitting layer group 33 and a second electrode 34 .

[0094] Specifically, a first electrode 31 is provided on a side of the first flat layer facing away from the base substrate 1 . The first electrode 31 is connected to the source of the driving backplane 2 . The first electrode 31 may be an anode.

[0095] A pixel definition layer 32 is provided on the side of the first electrode 31 facing away from the base substrate 1. A via is provided in the pixel definition layer 32, and a light-emitting layer group 33 is disposed within the via. A second electrode 34, which can be a cathode, is provided on the side of the light-emitting layer group 33 facing away from the base substrate 1. The light-emitting layer group 33 within a via forms a sub-pixel. Therefore, a light-emitting layer group 33 within a via constitutes a sub-pixel. The orthographic projection of the sub-pixel on the display substrate 10 is the same as the orthographic projection of the light-emitting layer group 33 on the display substrate 10. The display substrate 10 can include multiple sub-pixels.

[0096] The light-emitting layer group 33 may include a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer stacked in sequence. The hole injection layer is in contact with the first electrode 31, and the electron injection layer is in contact with the second electrode 34. Of course, in other exemplary embodiments of the present disclosure, the light-emitting layer group 33 may include only the hole transport layer, the light-emitting layer, and the electron transport layer. The light-emitting layer group 33 may also have other structures, and its specific structure can be set as needed.

[0097] The display substrate 10 may further include an encapsulation layer group 4. The encapsulation layer group 4 is provided on the side of the second electrode 34 away from the base substrate 1. The encapsulation layer group 4 is used to encapsulate the display substrate 10 to prevent external moisture, impurities, etc. from entering the interior of the display substrate 10 and affecting the display effect of the display substrate 10. The encapsulation layer group 4 can be set as a multi-layer, and the encapsulation layer group 4 can include an organic layer and an inorganic layer. Specifically, the encapsulation layer group 4 can include a first inorganic layer, an organic layer provided on the side of the first inorganic layer away from the base substrate 1, and a second inorganic layer provided on the side of the organic layer away from the base substrate 1. The materials of the first inorganic layer, the organic layer, and the second inorganic layer are not further described here. Of course, the encapsulation layer group 4 can also include more or fewer layers.

[0098] In this exemplary embodiment, as shown in FIG. 3 , a touch substrate 20 is provided on a side of the encapsulation layer group 4 away from the base substrate 1 .

[0099] 4 , the touch substrate 20 may include a plurality of first touch units 201 , a plurality of second touch units 202 , a plurality of third touch units 203 , a plurality of fourth touch units 204 , a plurality of touch sensing leads 205 , a plurality of first touch driving leads 206 , and a plurality of second touch driving leads 207 .

[0100] The first touch unit 201 may include a plurality of first touch electrodes 541 sequentially connected along a first direction X. Furthermore, the plurality of first touch units 201 are sequentially arranged along a second direction Y, thereby forming an array arrangement of the plurality of first touch electrodes 541. Adjacent first touch electrodes 541 in the second direction Y are spaced apart and not connected. Adjacent first touch electrodes 541 in the first direction X are spaced apart and connected to form a first touch unit 201 extending along the first direction X.

[0101] The second touch unit 202 may include multiple second touch electrodes 542 connected sequentially along the first direction X. Furthermore, the multiple second touch units 202 are arranged sequentially along the second direction Y, thereby forming an array arrangement of the multiple second touch electrodes 542. Two adjacent second touch electrodes 542 in the second direction Y are spaced apart and not connected. Two adjacent second touch electrodes 542 in the first direction X are spaced apart and connected to form a single second touch unit 202 extending along the first direction X.

[0102] Moreover, the second touch electrodes 542 are located in the gap between two adjacent first touch electrodes 541 . Similarly, the first touch electrodes 541 are located in the gap between two adjacent second touch electrodes 542 , so that the second touch electrodes 542 and the first touch electrodes 541 are alternately arranged in the first direction X.

[0103] The second direction Y intersects the first direction X. For example, the second direction Y is perpendicular to the first direction X.

[0104] Alternatively, multiple first touch electrodes 541 are arranged in the second direction Y to form a first touch electrode row, and multiple second touch electrodes 542 are arranged in the second direction Y to form a second touch electrode row. The first touch electrode rows and the second touch electrode rows are alternately arranged in the first direction X. The multiple first touch electrodes 541 in a first touch electrode row are spaced apart and unconnected; the multiple second touch electrodes 542 in a second touch electrode row are spaced apart and unconnected. Two adjacent first touch electrodes 541 in the first direction X are connected, so that the multiple first touch electrodes 541 in the first direction X are connected as a whole to form a first touch unit 201 extending along the first direction X. Two adjacent second touch electrodes 542 in the first direction X are connected, so that the multiple second touch electrodes in the first direction X are connected as a whole to form a second touch unit 202 extending along the first direction X.

[0105] Of course, in other example embodiments of the present disclosure, as shown in FIG. 7 , the second touch electrodes 542 and the first touch electrodes 541 may not be alternately arranged in the first direction X, but the second touch electrodes 542 and the first touch electrodes 541 may be staggered. Similarly, the first touch unit 201 may include a plurality of first touch electrodes 541 sequentially connected along the first direction X, and the second touch unit 202 may include a plurality of second touch electrodes 542 sequentially connected along the first direction X.

[0106] The input signal of the second touch control unit 202 is opposite in sign to the input signal of the first touch control unit 201; specifically, the first touch control unit 201 inputs a signal through the first touch control drive lead 206, and the second touch control unit 202 inputs a signal through the second touch control drive lead 207; that is, the first touch control unit 201 and the second touch control unit 202 input signals through different leads, so that the input signal of the second touch control unit 202 can be different from the input signal of the first touch control unit 201.

[0107] The input signal of the second touch control unit 202 is opposite in sign to the input signal of the first touch control unit 201. For example, if the input signal is a sinusoidal signal, the input signal of the second touch control unit 202 is inversely proportional to the input signal of the first touch control unit 201. That is, the phase difference between the input signal of the second touch control unit 202 and the input signal of the first touch control unit 201 is π, so that the input signal of the second touch control unit 202 and the input signal of the first touch control unit 201 are opposite in sign at all non-zero moments. Of course, the input signal of the second touch control unit 202 and the input signal of the first touch control unit 201 can also be rectangular wave signals, etc., which will not be described in detail here.

[0108] 4 and 7 , the third touch unit 203 may include a plurality of third touch electrodes 543 sequentially connected along the second direction Y. Furthermore, the plurality of third touch units 203 are sequentially arranged along the first direction X, thereby forming an array arrangement of the plurality of third touch electrodes 543. Adjacent third touch electrodes 543 in the first direction X are spaced apart and not connected. Adjacent third touch electrodes 543 in the second direction Y are spaced apart and connected to form a single third touch unit 203 extending along the second direction Y.

[0109] The third touch electrode 543 and the first touch electrode 541 form a first touch capacitor. Specifically, the third touch electrode 543 is embedded in the first touch electrode 541, that is, the first touch electrode 541 is arranged around the third touch electrode 543, and the third touch electrode 543 and the first touch electrode 541 are spaced apart and not connected; so that the third touch electrode 543 and the first touch electrode 541 form a first touch capacitor, and multiple first touch capacitors are arranged in sequence along the second direction Y to form a row of first touch capacitors.

[0110] The fourth touch unit 204 may include a plurality of fourth touch electrodes 544 sequentially connected along the second direction Y. The plurality of fourth touch units 204 are sequentially arranged along the first direction X, such that the plurality of fourth touch electrodes 544 are arranged in an array. Two adjacent fourth touch electrodes 544 in the first direction X are spaced apart and not connected. Two adjacent fourth touch electrodes 544 in the second direction Y are spaced apart and connected to form a fourth touch unit 204 extending along the second direction Y.

[0111] The fourth touch electrode 544 and the second touch electrode 542 form a second touch capacitor. Specifically, the fourth touch electrode 544 is embedded in the second touch electrode 542, that is, the second touch electrode 542 is arranged around the fourth touch electrode 544, and the fourth touch electrode 544 and the second touch electrode 542 are spaced apart and not connected; so that the fourth touch electrode 544 and the second touch electrode 542 form a second touch capacitor, and multiple second touch capacitors are arranged in sequence along the second direction Y to form a row of second touch capacitors.

[0112] The first touch capacitor rows and the second touch capacitor rows are alternately arranged, that is, a second touch capacitor row is arranged between two adjacent first touch capacitor rows, and a first touch capacitor row is arranged between two adjacent second touch capacitor rows.

[0113] Touch principle: Each first touch capacitor and second touch capacitor has a different position in the touch substrate 20. In other words, in the coordinate system formed by the first direction X and the second direction Y, each first touch capacitor and second touch capacitor is located at a different point. The touch driver chip 8 transmits a touch drive signal (e.g., a trigger signal) to the multiple first touch units 201 and the multiple second touch units 202. At this time, each of the first touch capacitors and the second touch capacitors at the above-mentioned different positions will have an initial capacitance value. Since the human body itself is a conductor, when a person's finger touches a certain position of the touch substrate 20, the capacitance value of the first touch capacitor and / or the second touch capacitor at that position will change. Based on the change in the capacitance value, the third touch electrode 543 and / or the fourth touch electrode 544 at that position will receive a corresponding touch sensing signal (e.g., a receiving signal). The touch sensing signal on the third touch electrode 543 and / or the fourth touch electrode 544 at that position is transmitted to the touch driver chip 8. The capacitance values ​​of the first touch capacitor and the second touch capacitor at the untouched position remain unchanged. Therefore, by determining the change in capacitance value of each of the first touch capacitor and the second touch capacitor, the touch point can be determined, thereby achieving the touch function.

[0114] Because the encapsulation layer group 4 is disposed between the touch substrate 20 and the second electrode 34 and is relatively thin and serves as an insulating layer, a noise capacitor is formed between the touch substrate 20 and the second electrode 34. When the display substrate 10 implements the display function, power is supplied to the second electrode 34, causing the capacitance value of the noise capacitor to change, thereby generating noise that affects the touch effect of the touch substrate 20. For example, in the case of high noise, even if no touch operation occurs, a touch signal is generated on the touch substrate 20, thereby outputting a touch signal and causing a touch misjudgment.

[0115] Each touch sensing lead 205 is connected to at least the adjacent third touch unit 203 and the fourth touch unit 204. That is, at least one adjacent row of first touch capacitor rows and one adjacent row of second touch capacitor rows are connected through one touch sensing lead 205, so that the electrical signals of at least one row of first touch capacitor rows and one row of second touch capacitor rows are output through one touch sensing lead 205.

[0116] Moreover, the input signal of the second touch unit 202 is opposite in sign to the input signal of the first touch unit 201. When the display function is realized on the display substrate 10, when power is supplied to the second electrode 34, the first noise generated by the second electrode 34 and the first touch unit 201 and the second noise generated by the second electrode 34 and the second touch unit 202 are opposite in sign. After the first noise and the second noise of opposite sign are connected through the touch sensing lead 205, they cancel each other out at least partially; thereby, the noise of the touch signal transmitted to the touch driver chip 8 through the touch sensing lead 205 is small or even noiseless.

[0117] Furthermore, the absolute value of the input signal of the second touch control unit 202 is substantially the same as the absolute value of the input signal of the first touch control unit 201, that is, the numerical value of the input signal of the second touch control unit 202 is the same as the numerical value of the input signal of the first touch control unit 201, but the sign is opposite. Consequently, the first noise generated by the second electrode 34 and the first touch control unit 201 and the second noise generated by the second electrode 34 and the second touch control unit 202 are opposite in sign and substantially the same in value. After being connected via the touch sensing lead 205, the first noise and the second noise, which have opposite signs but substantially the same value, almost completely cancel each other out. As a result, the touch signal transmitted to the touch driver chip 8 via the touch sensing lead 205 is noise-free, further improving the touch effect of the touch substrate 20 and preventing false touch detection.

[0118] It should be noted that the absolute value of the input signal of the second touch control unit 202 being identical to the absolute value of the input signal of the first touch control unit 201 not only includes that the absolute value of the input signal of the second touch control unit 202 is exactly the same as the absolute value of the input signal of the first touch control unit 201, but also includes that a certain error is set between the absolute value of the input signal of the second touch control unit 202 and the absolute value of the input signal of the first touch control unit 201. Within the error range, the absolute value of the input signal of the second touch control unit 202 is considered to be the same as the absolute value of the input signal of the first touch control unit 201. The error range can be set based on the manufacturing accuracy of the display panel and the accuracy of the touch driver chip 8.

[0119] Of course, in some other example embodiments of the present disclosure, the adjacent third touch units 203 and fourth touch units 204 can be connected through other connecting wires, and then the connecting wires are connected to the touch sensing leads 205, and the touch sensing signals are output to the touch driver chip 8 through the touch sensing leads 205; or multiple third touch units 203 and multiple fourth touch units 204 can be connected to the touch driver chip 8 through their respective touch sensing leads 205 in a one-to-one correspondence, and the first noise and the second noise are canceled out at the touch driver chip 8 end.

[0120] The overall structure of the touch substrate 20 is described above. The following describes each film layer of the touch substrate 20 .

[0121] 3 , the touch substrate 20 may include a base layer 51 , a first touch layer 52 , a touch insulating layer 53 , a second touch layer 54 , and a protective layer 55 , which are stacked.

[0122] The first touch layer 52 is disposed on one side of the base layer 51, specifically, on the side of the base layer 51 facing away from the display substrate 10. The first touch layer 52 may include a first bridge portion 521, a second bridge portion 522, a third bridge portion 523, and a fourth bridge portion 524.

[0123] The touch insulating layer 53 is disposed on a side of the first touch layer 52 away from the base layer 51 . The touch insulating layer 53 is provided with a plurality of first via holes 531 , a plurality of second via holes 532 , a plurality of third via holes 533 and a plurality of fourth via holes 534 .

[0124] The second touch layer 54 is disposed on a side of the touch insulation layer 53 facing away from the base layer 51 . The second touch layer 54 may include a first touch electrode 541 , a second touch electrode 542 , a third touch electrode 543 and a fourth touch electrode 544 .

[0125] 4 , 5 and 6 , since the structures of the first touch electrodes 541 and the second touch electrodes 542 are substantially the same, the first touch electrodes 541 and the second touch electrodes 542 are represented by one FIG. 6 .

[0126] Specifically, the first touch electrode 541 can be set to a rectangle, and the first touch electrode 541 can include a first connecting portion 5412 and two first touch sub-electrodes 5411. The first touch sub-electrodes 5411 can also be set to a rectangle; the two first touch sub-electrodes 5411 are arranged in sequence along the second direction Y, and the two first touch sub-electrodes 5411 are spaced apart; the first connecting portion 5412 is connected between the two first touch sub-electrodes 5411, and is connected to one end of the two first touch sub-electrodes 5411 close to the second touch electrode 542.

[0127] The second touch electrode 542 can be set to a rectangle. The second touch electrode 542 can include a second connecting portion 5422 and two second touch sub-electrodes 5421. The two second touch sub-electrodes 5421 can also be set to a rectangle; the two second touch sub-electrodes 5421 are arranged in sequence along the second direction Y, and the two second touch sub-electrodes 5421 are spaced apart; the second connecting portion 5422 is connected between the two second touch sub-electrodes 5421, and is connected to one end of the two second touch sub-electrodes 5421 close to the first touch electrode 541.

[0128] The second touch layer 54 may further include a first connecting wire 545 and a second connecting wire 546. The first connecting wire 545 is spaced apart between the two first touch sub-electrodes 5411, i.e., the first connecting wire 545 is spaced apart from the two first touch sub-electrodes 5411 and is not connected thereto. One end of the first connecting wire 545 is connected to the second connecting portion 5422 and extends away from the second connecting portion 5422 to a position between the two first touch sub-electrodes 5411. The first connecting wire 545 can connect two adjacent second touch electrodes 542 in the first direction X.

[0129] The second connecting wire 546 is spaced apart between the two second touch sub-electrodes 5421. That is, the second connecting wire 546 is spaced apart from the two second touch sub-electrodes 5421 and is not connected thereto. Furthermore, one end of the second connecting wire 546 is connected to the first connecting portion 5412 and extends away from the first connecting portion 5412 to a position between the two second touch sub-electrodes 5421. The second connecting wire 546 can connect two adjacent first touch electrodes 541 in the first direction X.

[0130] A first recessed portion 5413 is provided on both sides of the first touch electrode 541 in the second direction Y, and the third touch electrode 543 is provided in the first recessed portion 5413. Specifically, the third touch electrode 543 located at the edge position is provided in the first recessed portion 5413 of a first touch electrode 541, and the third touch electrode 543 located at the non-edge position is provided in the two first recessed portions 5413 of two adjacent first touch electrodes 541, so that one third touch electrode 543 is spaced apart from and adjacent to the two adjacent first touch electrodes 541 to form a first touch capacitor, that is, one third touch electrode 543 and the two adjacent first touch electrodes 541 form a first touch capacitor, thereby increasing the setting density of the first touch capacitor and thus increasing the touch accuracy.

[0131] Furthermore, as shown in Figures 5 and 6 , two first recesses 5413 are provided on each side of the first touch electrodes 541 in the second direction Y, and the third touch electrodes 543 are disposed within the first recesses 5413 . This results in two third touch electrodes 543 being disposed between two adjacent first touch electrodes 541 in the second direction Y, and the two third touch electrodes 543 being arranged along the first direction X. A row of third touch electrodes 543 arranged in the second direction Y is connected to form a third touch unit 203 , and two rows of third touch electrodes 543 arranged in the second direction Y are connected to form two third touch units 203 . Two adjacent third touch units 203 form a group, and a group of third touch units 203 forms multiple first touch capacitors with a row of multiple first touch electrodes 541 arranged in the second direction Y. That is, two rows of third touch electrodes 543 arranged in the second direction Y cooperate with a row of first touch electrodes 541 arranged in the second direction Y to form a first touch capacitor. This also increases the density of the first touch capacitors, thereby improving touch accuracy.

[0132] Of course, in some other exemplary embodiments of the present disclosure, three or more first recesses 5413 may be provided on each side of the first touch electrode 541 in the second direction Y, and the third touch electrode 543 may be provided within the first recess 5413. Three or more rows of third touch electrodes 543 arranged in the second direction Y cooperate with one row of first touch electrodes 541 arranged in the second direction Y to form a first touch capacitor, which can also increase the arrangement density of the first touch capacitors, thereby improving touch accuracy.

[0133] Second recessed portions 5423 are provided on both sides of the second direction Y of the second touch electrode 542, and the fourth touch electrode 544 is provided in the second recessed portions 5423. Specifically, the fourth touch electrode 544 located at the edge position is provided in the second recessed portion 5423 of a second touch electrode 542, and the fourth touch electrode 544 located at the non-edge position is provided in the two second recessed portions 5423 of two adjacent second touch electrodes 542, so that a fourth touch electrode 544 is spaced apart from and adjacent to the two adjacent second touch electrodes 542 to form a second touch capacitor, that is, a fourth touch electrode 544 and the two adjacent second touch electrodes 542 form a second touch capacitor, thereby increasing the setting density of the second touch capacitor and thus increasing the touch accuracy.

[0134] Furthermore, as shown in Figures 5 and 6 , two second recesses 5423 are provided on each side of the second touch electrodes 542 in the second direction Y, and the fourth touch electrodes 544 are disposed within the second recesses 5423. As a result, two fourth touch electrodes 544 are disposed between two adjacent second touch electrodes 542 in the second direction Y, and the two fourth touch electrodes 544 are arranged along the first direction X. A row of fourth touch electrodes 544 arranged in the second direction Y is connected to form one third touch unit 203, and two rows of fourth touch electrodes 544 arranged in the second direction Y are connected to form two third touch units 203. Two adjacent third touch units 203 form a group, and a group of third touch units 203 forms multiple second touch capacitors with a row of multiple second touch electrodes 542 arranged in the second direction Y. That is, two rows of fourth touch electrodes 544 arranged in the second direction Y cooperate with a row of second touch electrodes 542 arranged in the second direction Y to form a second touch capacitor. This also increases the density of the second touch capacitors, thereby improving touch accuracy.

[0135] Of course, in some other exemplary embodiments of the present disclosure, three or more second recesses 5423 may be provided on each side of the second touch electrode 542 in the second direction Y, and the fourth touch electrode 544 may be provided in the second recess 5423. Three or more rows of fourth touch electrodes 544 arranged in the second direction Y cooperate with one row of second touch electrodes 542 arranged in the second direction Y to form a second touch capacitor, which can also increase the arrangement density of the second touch capacitors, thereby improving touch accuracy.

[0136] In this exemplary embodiment, the first recessed portion 5413 and the second recessed portion 5423 are both configured as rectangles. Of course, the first recessed portion 5413 and the second recessed portion 5423 can also be configured as semicircular, semi-elliptical, triangular, etc.

[0137] 7 and 8 , the first touch electrodes 541 and the second touch electrodes 542 can be arranged in a diamond ring shape, with the corners of two adjacent first touch electrodes 541 facing each other, and the corners of two adjacent second touch electrodes 542 facing each other, so that a portion of the second touch electrode 542 can be located between two adjacent first touch electrodes 541, and a portion of the first touch electrode 541 can be located between two adjacent second touch electrodes 542. This allows the first touch electrodes 541 and the second touch electrodes 542 to be staggered.

[0138] The third touch electrode 543 is arranged in the ring of the first touch electrode 541, so that the third touch electrode 543 and the first touch electrode 541 can form a first touch capacitor; the fourth touch electrode 544 is arranged in the ring of the second touch electrode 542, so that the fourth touch electrode 544 and the second touch electrode 542 can form a second touch capacitor.

[0139] Furthermore, a first connecting wire 545 is connected between two adjacent first touch electrodes 541 in the first direction X, thereby connecting the plurality of first touch electrodes 541 arranged along the first direction X in sequence to form a first touch unit 201 . A second connecting wire 546 is connected between two adjacent second touch electrodes 542 in the first direction, thereby connecting the plurality of second touch electrodes 542 arranged along the first direction X in sequence to form a second touch unit. Both the first touch electrodes 541 and the second connecting wire 546 are disposed on the second touch layer 54 .

[0140] 4-6 and 9 as well as 10 , the various bridge portions are drawn in FIG4-6 , but are not shown because the vias are too small; FIG9 shows the first bridge portion 521 and the second bridge portion 522 as well as the first via 531 and the second via 532; and FIG10 shows the third bridge portion 523 and the fourth bridge portion 524 as well as the third via 533 and the fourth via 534.

[0141] The first bridge portion 521 connects to two adjacent first touch electrodes 541 in the first direction X through a first via 531. Specifically, the first bridge portion 521 can be configured in a T-shape, such that the first bridge portion 521 includes three connection ends. The first connection end can be connected to the second connection wire 546 through at least one first via 531, thereby connecting the first bridge portion 521 to the opposite end of the second connection wire 546. The second and third connection ends of the first bridge portion 521 are symmetrically arranged, and the second and third connection ends are connected to the two first touch sub-electrodes 5411 in a one-to-one correspondence through at least two first vias 531.

[0142] The second bridge portion 522 is connected to two adjacent second touch electrodes 542 in the first direction X through the second via 532. Specifically, the second bridge portion 522 can be arranged in a "T" shape, such that the second bridge portion includes three connection ends. The first connection end can be connected to the first connection wire 545 through at least one second via 532, so that the second bridge portion 522 is connected to the opposite end of the first connection wire 545. The second connection end and the third connection end of the second bridge portion 522 are symmetrically arranged, and the second connection end and the third connection end are connected to the two second touch sub-electrodes 5421 through at least two second vias 532 in a one-to-one correspondence.

[0143] The third bridge portion 523 connects two adjacent third touch electrodes 543 in the second direction Y through a third via 533. Specifically, the third bridge portion 523 can be arranged in a straight line, with one end of the third bridge portion 523 connected to one third touch electrode 543 through the third via 533, and the other end of the third bridge portion 523 connected to another third touch electrode 543 through the third via 533. Two third bridge portions 523 can be provided to connect two adjacent third touch electrodes 543, i.e., two third bridge portions 523 are connected between two adjacent third touch electrodes 543; moreover, the two third bridge portions 523 are arranged substantially parallel to each other. Of course, in other exemplary embodiments of the present disclosure, the two third bridge portions 523 can also be arranged in a cross-shaped arrangement; the third bridge portions 523 can also be arranged in a curved shape; or three or more third bridge portions 523 can be provided to connect two adjacent third touch electrodes 543, and the three or more third bridge portions 523 can be arranged in parallel or in a cross-shaped arrangement.

[0144] The fourth bridge portion 524 connects two adjacent fourth touch electrodes 544 in the second direction Y through a fourth via 534. Specifically, the fourth bridge portion 524 can be arranged in a straight line, with one end of the fourth bridge portion 524 connected to one fourth touch electrode 544 through the fourth via 534, and the opposite end of the fourth bridge portion 524 connected to another fourth touch electrode 544 through the fourth via 534. Two fourth bridge portions 524 can be provided to connect two adjacent fourth touch electrodes 544, i.e., two fourth bridge portions 524 are connected between two adjacent fourth touch electrodes 544; moreover, the two fourth bridge portions 524 are arranged substantially parallel to each other. Of course, in other exemplary embodiments of the present disclosure, the two fourth bridge portions 524 can also be arranged in a cross-connected manner; the fourth bridge portions 524 can also be arranged in a curved shape; or three or more fourth bridge portions 524 can be provided to connect two adjacent fourth touch electrodes 544, and the three or more fourth bridge portions 524 can be arranged in parallel or in a cross-connected manner.

[0145] 7 and 8 , since the first touch electrode 541 and the second touch electrode 542 are already connected on the second touch layer 54 , there is no need to provide the first bridge portion 521 and the second bridge portion 522 as well as the first via hole 531 and the second via hole 532 ; only the third bridge portion 523 and the fourth bridge portion 524 as well as the third via hole 533 and the fourth via hole 534 need to be provided.

[0146] Of course, in some other example embodiments of the present disclosure, the connection of the third touch electrode 543 can be achieved on the second touch layer 54, and the connection of the fourth touch electrode 544 can be achieved on the second touch layer 54. In this case, there is no need to provide the third bridge portion 523 and the fourth bridge portion 524 and the third via hole 533 and the fourth via hole 534. Only the first bridge portion 521 and the second bridge portion 522 and the first via hole 531 and the second via hole 532 need to be provided.

[0147] Furthermore, because each touch unit is affected by IR drop (infrared drop), the load at different locations within the display area varies. When touched by the same external force, the touch signals at different locations vary, indicating a different ΔCm (change in capacitance). This results in different touch response times at different locations within the display area, leading to differences in sensitivity at each location. Furthermore, as screen size increases, the touch traces within the display area and the surrounding touch leads become longer, becoming more affected by IR drop (infrared drop), resulting in a more pronounced voltage drop between the far and near ends of the signal input, making it difficult to achieve high-quality touch functionality.

[0148] In this exemplary embodiment, as shown in Figures 1, 4, 5, and 7, a touch driver chip 8 is disposed in the non-display area NA and is located on one side of the display area AA in the first direction X. The touch driver chip 8 is electrically connected to the first touch sensor unit 201, the second touch sensor unit 202, and the touch sensing lead 205. The specific connection relationship is not shown in the figure. The touch driver chip 8 is connected to the first touch sensor unit 201 via the first touch driver lead 206, and to the second touch sensor unit 202 via the second touch driver lead 207. The touch driver chip 8 is connected to the third touch sensor unit 203 and the fourth touch sensor unit 204 via the touch sensing lead 205. The touch driver chip 8 receives touch drive signals via the first touch driver lead 206 and the second touch driver lead 207, and receives touch sensing signals via the touch sensing lead 205.

[0149] As shown in Figure 9, the orthographic projection area of ​​the first via 531 on the base layer 51 increases as the distance from the touch driver chip 8 increases; for example, the first via 531 can be set as a circular via, and the diameter of the first via 531 increases as the distance from the touch driver chip 8 increases; the first via 531 can be set as a rectangular via, and the side length of the first via 531 increases as the distance from the touch driver chip 8 increases.

[0150] The orthographic projection area of ​​the second via 532 on the base layer 51 increases as the distance from the touch driver chip 8 increases; for example, the second via 532 can be set as a circular via, and the diameter of the second via 532 increases as the distance from the touch driver chip 8 increases; the second via 532 can be set as a rectangular via, and the side length of the second via 532 increases as the distance from the touch driver chip 8 increases.

[0151] Of course, the first via hole 531 and the second via hole 532 may also have other shapes, which will not be described here one by one.

[0152] Due to the influence of IR drop (IR-Drop), the closer the touch control unit 201 is to the touch control chip 8, the larger the touch control signal is, and the farther away from the touch control chip 8, the smaller the touch control signal is. This configuration effectively reduces the resistance of the first touch control unit 201 at a position away from the touch control chip 8, thereby effectively increasing the current of the first touch control unit 201 at a position away from the touch control chip 8, reducing the difference between the position of the first touch control unit 201 away from the touch control chip 8 and the position close to the touch control chip 8, and reducing the difference in ΔCm (the amount of change in capacitance value). Similarly, the resistance of the second touch control unit 202 at a position away from the touch control chip 8 is effectively reduced, thereby effectively increasing the current of the second touch control unit 202 at a position away from the touch control chip 8, reducing the difference between the position of the second touch control unit 202 away from the touch control chip 8 and the position close to the touch control chip 8, and reducing the difference in ΔCm (the amount of change in capacitance value), thereby improving the touch effect.

[0153] As shown in Figure 11, the touch driving chip 8 is arranged on one side of the display area AA in the first direction X. In some other example embodiments of the present disclosure, the display panel may include at least two first touch areas AA1, and the at least two first touch areas AA1 are arranged sequentially along the first direction X; for example, the touch substrate 20 may include two first touch areas AA1, and the two first touch areas AA1 are arranged sequentially along the first direction X; the display panel may include three or more first touch areas AA1, and the three or more first touch areas AA1 are arranged sequentially along the first direction X.

[0154] The orthographic projection areas of the first vias 531 located in the same first touch area AA1 on the base layer 51 are the same; for example, the first vias 531 can be set as circular vias, and the diameters of the first vias 531 located in the same first touch area AA1 are the same; the first vias 531 can be set as rectangular vias, and the side lengths of the first vias 531 located in the same first touch area AA1 are the same.

[0155] The second vias 532 located in the same first touch area AA1 have the same orthographic projection area on the base layer 51; for example, the second vias 532 can be set as circular vias, and the diameters of the second vias 532 located in the same first touch area AA1 are the same; the second vias 532 can be set as rectangular vias, and the side lengths of the second vias 532 located in the same first touch area AA1 are the same.

[0156] Moreover, the orthographic projection area of ​​the first via 531 located in different first touch areas AA1 on the base layer 51 increases as the distance between the first touch area AA1 and the touch driver chip 8 increases, that is, the farther the first touch area AA1 is from the touch driver chip 8, the larger the orthographic projection area of ​​the first via 531 in the first touch area AA1 on the base layer 51, for example, the diameter may increase or the side length may increase.

[0157] Similarly, the orthographic projection area of ​​the second via 532 located in different first touch areas AA1 on the base layer 51 increases as the distance between the first touch area AA1 and the touch driver chip 8 increases, that is, the farther the first touch area AA1 is from the touch driver chip 8, the larger the orthographic projection area of ​​the second via 532 in the first touch area AA1 on the base layer 51, for example, the diameter may increase or the side length may increase.

[0158] This configuration reduces the design and manufacturing complexity of the touch substrate 20, thereby improving production efficiency. Furthermore, it also reduces the difference between the first touch unit 201's position farther from the touch driver chip 8 and its position closer to the touch driver chip 8, thereby reducing the difference in ΔCm (the amount of change in capacitance). Furthermore, it also reduces the difference between the second touch unit 202's position farther from the touch driver chip 8 and its position closer to the touch driver chip 8, thereby reducing the difference in ΔCm (the amount of change in capacitance), thereby improving the touch effect.

[0159] Furthermore, the first vias 531 connected to the same first bridge portion 521 have the same orthographic projection area on the base layer 51, meaning that the multiple first vias 531 connected to the same first bridge portion 521 have the same size. The second vias 532 connected to the same second bridge portion 522 have the same orthographic projection area on the base layer 51, meaning that the multiple second vias 532 connected to the same second bridge portion 522 have the same size. This arrangement reduces the design difficulty of the touch substrate 20 and the difficulty of the touch substrate 20 manufacturing process, thereby improving production efficiency.

[0160] 10 , the touch sensing lead 205 is connected to one side of the third touch unit 203 and the fourth touch unit 204 in the second direction Y. The orthographic projection area of ​​the third via 533 on the base layer 51 increases as the distance from the access end of the touch sensing lead 205 increases. For example, the third via 533 can be configured as a circular via, and the diameter of the third via 533 increases as the distance from the access end of the touch sensing lead 205 increases. Alternatively, the third via 533 can be configured as a rectangular via, and the side length of the third via 533 increases as the distance from the access end of the touch sensing lead 205 increases.

[0161] The orthographic projection area of ​​the fourth via 534 on the base layer 51 increases as the distance from the access end of the touch sensing lead 205 increases; for example, the fourth via 534 can be set as a circular via, and the diameter of the fourth via 534 increases as the distance from the access end of the touch sensing lead 205 increases; the fourth via 534 can be set as a rectangular via, and the side length of the fourth via 534 increases as the distance from the access end of the touch sensing lead 205 increases.

[0162] Of course, the third via hole 533 and the fourth via hole 534 may also have other shapes, which will not be described here one by one.

[0163] It should be noted that, when defining the third via 533, the access end of the touch sensing lead 205 refers to the connection position between the touch sensing lead 205 and the third touch unit 203, which is basically a connection point; when defining the fourth via 534, the access end of the touch sensing lead 205 refers to the connection position between the touch sensing lead 205 and the fourth touch unit 204, which is basically a connection point.

[0164] Similarly, due to the influence of IR drop (IR-Drop), the closer to the access end of the touch sensing lead 205, the shorter the transmission path of the touch sensing signal, and the less affected by IR-Drop; the farther away from the access end of the touch sensing lead 205, the longer the transmission path of the touch sensing signal, and the greater the influence of IR-Drop. This configuration effectively reduces the resistance of the third touch unit 203 and the fourth touch unit 204 at the access end away from the touch sensing lead 205, thereby effectively increasing the current flowing through the third touch unit 203 and the fourth touch unit 204 at the access end away from the touch sensing lead 205. This reduces the difference between the third touch unit 203 and the fourth touch unit 204 at the access end away from the touch sensing lead 205 and the access end close to the touch sensing lead 205, thereby reducing the difference in ΔCm (the change in capacitance value) and improving the touch effect.

[0165] In some other example embodiments of the present disclosure, as shown in Figure 12, the touch substrate 20 may include at least two second touch areas AA2, and the at least two second touch areas AA2 are arranged sequentially along the second direction Y; for example, the touch substrate 20 may include two second touch areas AA2, and the two second touch areas AA2 are arranged sequentially along the second direction Y; the display panel may include three or more second touch areas AA2, and the three or more second touch areas AA2 are arranged sequentially along the second direction Y.

[0166] The orthographic projection areas of the third vias 533 located in the same second touch area AA2 on the base layer 51 are the same; for example, the third vias 533 can be set as circular vias, and the diameters of the third vias 533 located in the same second touch area AA2 are the same; the third vias 533 can be set as rectangular vias, and the side lengths of the third vias 533 located in the same second touch area AA2 are the same.

[0167] The fourth vias 534 located in the same second touch area AA2 have the same orthographic projection area on the base layer 51; for example, the fourth vias 534 can be set as circular vias, and the diameters of the fourth vias 534 located in the same second touch area AA2 are the same; the fourth vias 534 can be set as rectangular vias, and the side lengths of the fourth vias 534 located in the same second touch area AA2 are the same.

[0168] Moreover, the orthographic projection area of ​​the third via 533 located in different second touch areas AA2 on the base layer 51 increases as the distance between the second touch area AA2 and the access end of the touch sensing lead 205 increases. That is, the farther the second touch area AA2 is from the access end of the touch sensing lead 205, the larger the orthographic projection area of ​​the third via 533 in the second touch area AA2 on the base layer 51. For example, the diameter or the side length may increase.

[0169] The orthographic projection area of ​​the fourth via 534 located in different second touch areas AA2 on the base layer 51 increases as the distance between the second touch area AA2 and the access end of the touch sensing lead 205 increases. That is, the farther the second touch area AA2 is from the access end of the touch sensing lead 205, the larger the orthographic projection area of ​​the fourth via 534 in the second touch area AA2 on the base layer 51. For example, the diameter may increase or the side length may increase.

[0170] This configuration reduces the design and manufacturing complexity of the touch substrate 20, thereby improving production efficiency. Furthermore, it also reduces the difference between the access point position of the third touch unit 203 farther from the touch sensing lead 205 and the access point position closer to the touch sensing lead 205, thereby reducing the difference in ΔCm (the amount of change in capacitance). Furthermore, it also reduces the difference between the access point position of the fourth touch unit 204 farther from the touch sensing lead 205 and the access point position closer to the touch sensing lead 205, thereby reducing the difference in ΔCm (the amount of change in capacitance), thereby improving the touch effect.

[0171] Furthermore, the third vias 533 connected to the same third bridge portion 523 have the same orthographic projection area on the base layer 51, meaning that the multiple third vias 533 connected to the same third bridge portion 523 have the same size. The fourth vias 534 connected to the same fourth bridge portion 524 have the same orthographic projection area on the base layer 51, meaning that the multiple fourth vias 534 connected to the same fourth bridge portion 524 have the same size. This arrangement reduces the design difficulty of the touch substrate 20 and the difficulty of the touch substrate 20 manufacturing process, thereby improving production efficiency.

[0172] 7 , the first touch drive lead 206 and the second touch drive lead 207 are represented by different line types to clearly distinguish them. The two first touch drive leads 206 are connected to opposite ends of the first touch unit 201, i.e., the first touch drive leads 206 are connected to opposite ends of the first touch unit 201 in the extension direction (first direction X). Touch drive signals can be input to both opposite ends of the first touch unit 201 in the extension direction, thereby reducing the impact of IR drop on the far and near ends of the touch substrate.

[0173] The two second touch drive leads 207 are correspondingly connected to the opposite ends of the second touch unit 202, that is, the second touch drive leads 207 are connected to the opposite ends of the extension direction (first direction X) of the second touch unit 202. Touch drive signals can be input at the opposite ends of the extension direction of the second touch unit 202, thereby reducing the impact of resistance voltage drop (IR-Drop) on the far end and near end of the touch substrate.

[0174] Of course, in some example embodiments of the present disclosure, the adjacent third touch unit 203 and the fourth touch unit 204 form a group of touch sensing units, and both ends of the touch sensing units in the second direction Y are connected to touch sensing leads 205, so that touch sensing signals can be output at both opposite ends of the extension direction of the touch sensing signal 1, thereby reducing the influence of the resistance voltage drop (IR-Drop) on the far end and the near end of the touch substrate.

[0175] Based on the same inventive concept, an exemplary embodiment of the present disclosure provides a display device, which may include any one of the display panels described above. The specific structure of the display panel has been described in detail above, so it will not be repeated here.

[0176] The specific type of the display device is not particularly limited, and any type of display device commonly used in the field can be used, such as mobile devices such as mobile phones, wearable devices such as watches, VR devices, etc. Those skilled in the art can make corresponding choices based on the specific purpose of the display device, which will not be repeated here.

[0177] It should be noted that, in addition to the display panel, the display device also includes other necessary components and components, such as the housing, circuit board, power cord, etc. Taking the display as an example, technical personnel in this field can make corresponding supplements based on the specific usage requirements of the display device, which will not be repeated here.

[0178] Compared with the prior art, the beneficial effects of the display device provided by the exemplary embodiment of the present invention are the same as the beneficial effects of the display panel provided by the above exemplary embodiment, and are not described in detail here.

[0179] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the appended claims.

Claims

1. A display panel, wherein: include: Display substrate; A touch control substrate is disposed on the light emitting side of the display substrate, and the touch control substrate comprises: A plurality of first touch control units, each of which comprises a plurality of first touch control electrodes sequentially connected along a first direction; a plurality of second touch control units, wherein the second touch control units include a plurality of second touch control electrodes sequentially connected along the first direction, and input signals of the second touch control units are opposite in sign to input signals of the first touch control units; a plurality of third touch control units, wherein the third touch control units include a plurality of third touch control electrodes sequentially connected along a second direction, the third touch control electrodes and the first touch control electrodes form a first touch control capacitor, and the second direction intersects the first direction; A plurality of fourth touch control units, wherein the fourth touch control units include a plurality of fourth touch control electrodes sequentially connected along a second direction, and the fourth touch control electrodes and the second touch control electrodes form a second touch control capacitor.

2. The display panel according to claim 1, wherein: An absolute value of the input signal of the second touch control unit is the same as an absolute value of the input signal of the first touch control unit.

3. The display panel according to claim 1, wherein: The touch control substrate comprises: A base layer, disposed on the light-emitting side of the display substrate; A first touch layer, disposed on a side of the base layer away from the display substrate, the first touch layer comprising a first bridge portion and a second bridge portion, and / or a third bridge portion and a fourth bridge portion; a touch insulating layer, disposed on a side of the first touch layer away from the base layer, the touch insulating layer being provided with a plurality of first via holes and a plurality of second via holes, and / or a plurality of third via holes and a plurality of fourth via holes; A second touch layer, disposed on a side of the touch insulation layer away from the base layer, the second touch layer comprising the first touch electrode, the second touch electrode, the third touch electrode and the fourth touch electrode; The first bridge portion is connected to two adjacent first touch electrodes in the first direction through the first via hole, the second bridge portion is connected to two adjacent second touch electrodes in the first direction through the second via hole; and / or the third bridge portion is connected to two adjacent second touch electrodes in the first direction through the second via hole. The third via hole connects two of the third touch electrodes adjacent to each other in the second direction, and the fourth bridge portion connects two of the fourth touch electrodes adjacent to each other in the second direction through the fourth via hole.

4. The display panel according to claim 3, wherein: The display panel comprises a display area and a non-display area located at least on one side of the display area; the display panel further comprises: A touch control driving chip is disposed in the non-display area, and the touch control driving chip is electrically connected to the first touch control unit, the second touch control unit and the touch control sensing lead; The orthographic projection area of ​​the first via hole on the base layer increases with the increase of the distance from the touch control driver chip, and the orthographic projection area of ​​the second via hole on the base layer increases with the increase of the distance from the touch control driver chip.

5. The display panel according to claim 3, wherein: The display panel comprises a display area and a non-display area located at least on one side of the display area; the display panel further comprises: A touch control driving chip is disposed in the non-display area and is located at one side of the first direction of the display area, and the touch control driving chip is electrically connected to the first touch control unit, the second touch control unit and the touch sensing lead; The touch substrate includes at least two first touch areas, at least two first touch areas are arranged in sequence along the first direction, the first via holes located in the same first touch area have the same orthographic projection area on the base layer, the second via holes located in the same first touch area have the same orthographic projection area on the base layer, the orthographic projection area of ​​the first via holes located in different first touch areas on the base layer increases as the distance between the first touch area and the touch driver chip increases, and the orthographic projection area of ​​the second via holes located in different first touch areas on the base layer increases as the distance between the first touch area and the touch driver chip increases.

6. The display panel according to claim 4 or 5, wherein: The first via holes connected to the same first bridge portion have the same orthographic projection area on the base layer, and the second via holes connected to the same second bridge portion have the same orthographic projection area on the base layer.

7. The display panel according to any one of claims 3 to 5, wherein: The orthographic projection area of ​​the third via hole on the base layer increases with the distance from the access end of the touch sensing lead, and the orthographic projection area of ​​the fourth via hole on the base layer increases with the distance from the access end of the touch sensing lead.

8. The display panel according to claim 7, wherein: The third via holes connected to the same third bridge portion have the same orthographic projection area on the base layer, and the fourth via holes connected to the same fourth bridge portion have the same orthographic projection area on the base layer.

9. The display panel according to any one of claims 3 to 5, wherein: The touch sensing lead is connected to one side of the third touch unit and the fourth touch unit in the second direction, the touch substrate includes at least two second touch areas, and the at least two second touch areas are arranged in sequence along the second direction. The third via holes located in the same second touch area have the same orthographic projection area on the base layer, and the fourth via holes located in the same second touch area have the same orthographic projection area on the base layer. The orthographic projection area of ​​the third via holes located in different second touch areas on the base layer increases as the distance between the second touch area and the access end of the touch sensing lead increases, and the orthographic projection area of ​​the fourth via holes located in different second touch areas on the base layer increases as the distance between the second touch area and the access end of the touch sensing lead increases.

10. The display panel according to any one of claims 3 to 5, wherein: The second touch electrodes and the first touch electrodes are alternately arranged in the first direction, and the first touch electrodes include: Two first touch sub-electrodes are arranged in sequence along the second direction, and the two first touch sub-electrodes are spaced apart from each other; A first connecting portion, connected between the two first touch sub-electrodes; The second touch electrode comprises: Two second touch sub-electrodes are arranged in sequence along the second direction, and the two second touch sub-electrodes are spaced apart from each other; The second connecting portion is connected between the two second touch-control sub-electrodes.

11. The display panel according to claim 10, wherein: The second touch layer further includes: A first connecting wire is arranged between two of the first touch sub-electrodes, one end of the first connecting wire is connected to the second connecting portion, and the other end of the first connecting wire is connected to the second bridging portion, so as to connect two adjacent second touch electrodes in a first direction; The second connecting wire is arranged between two of the second touch sub-electrodes, one end of the second connecting wire is connected to the first connecting portion, and the other end of the second connecting wire is connected to the first bridging portion to connect two adjacent first touch electrodes in the first direction.

12. The display panel according to any one of claims 1 to 5, wherein: The second touch control electrodes are staggered with the first touch control electrodes, and the first touch control units and the second touch control units are alternately arranged in the second direction.

13. The display panel according to any one of claims 1 to 5, wherein: At least two adjacent third touch units form a group, and a group of the third touch units and a row of multiple first touch electrodes arranged along the second direction form multiple first touch capacitors; at least two adjacent fourth touch units form a group, and a group of the fourth touch units and a row of multiple second touch electrodes arranged along the second direction form multiple second touch capacitors.

14. The display panel according to any one of claims 1 to 5, wherein: One of the third touch electrodes is spaced apart from and adjacent to two adjacent first touch electrodes to form the first touch capacitor; one of the fourth touch electrodes is spaced apart from and adjacent to two adjacent second touch electrodes to form the second touch capacitor.

15. The display panel according to any one of claims 1 to 5, wherein: The touch substrate further includes a plurality of touch sensing leads, a plurality of first touch driving leads and a plurality of second touch driving leads; each of the first touch driving leads is connected to one end of the first touch unit, and each of the second touch driving leads is connected to one end of the second touch unit; or, two of the first touch driving leads are correspondingly connected to opposite ends of the first touch unit, and two of the second touch driving leads are correspondingly connected to opposite ends of the second touch unit; Each of the touch sensing lead wires at least connects the adjacent third touch unit and the fourth touch unit.

16. The display panel according to any one of claims 1 to 5, wherein: The adjacent third touch unit and the fourth touch unit form a group of touch sensing units, and both ends of the touch sensing units in the second direction are connected to the touch sensing leads.

17. The display panel according to any one of claims 1 to 5, wherein: A plurality of the first touch control units are sequentially arranged along the second direction, a plurality of the second touch control units are sequentially arranged along the second direction, a plurality of the third touch control units are sequentially arranged along the first direction, and a plurality of the fourth touch control units are sequentially arranged along the first direction.

18. A display device, wherein: A display panel comprising any one of claims 1 to 17.

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