Touch-control electrode unit, touch-control electrode structure and display panel

Abstract

The present application belongs to the technical field of display devices. Disclosed are a touch-control electrode unit, a touch-control electrode structure and a display panel. The touch-control electrode unit is defined as an incomplete state, and the touch-control electrode unit comprises a first touch-control electrode and a second touch-control electrode, the first touch-control electrode comprising a main body portion and an incomplete portion, which are separated by part of the second touch-control electrode, wherein the first touch-control electrode further comprises a first connecting portion, and the first connecting portion and the second touch-control electrode are arranged in a crossed manner, so as to be respectively connected to the main body portion and the incomplete portion.

Description

Touch electrode unit, structure and display panel

[0001] This application claims priority to Chinese patent application number 202311607015.X filed on November 28, 2023, with invention name “Touch electrode unit, structure and display panel”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application belongs to the technical field of display devices, and in particular relates to a touch electrode unit, structure and display panel. Background Art

[0003] Touch-enabled display panels are widely used in various electronic devices. The touch pattern has a significant impact on touch sensitivity. Currently, due to the irregular shape of display panels, the touch pattern is incomplete at the edges of the display panel, affecting touch performance.

[0004] Summary of the Invention

[0005] To this end, the present application proposes a touch electrode unit, structure, and display panel.

[0006] The present application provides a touch electrode unit, wherein the touch electrode unit has a touch pattern that is a complete touch pattern but lacks at least a portion, forming an incomplete touch pattern. The touch electrode unit includes a first touch electrode and a second touch electrode. The first touch electrode includes a main portion corresponding to a complete partial touch pattern and a incomplete portion corresponding to a missing touch pattern. The main portion and the incomplete portion are separated by at least a portion of the second touch electrode.

[0007] The first touch electrode further includes a first connecting portion, the first connecting portion, the main body, the incomplete portion and the second touch electrode are arranged on the same layer, the first connecting portion and the second touch electrode are spaced apart from each other, and the first connecting portion is respectively connected to the main body and the incomplete portion.

[0008] According to the touch electrode unit of the present application, a connecting portion is provided in the incomplete first touch electrode to connect the divided main portion and the incomplete portion, thereby reducing the pattern that is not connected to the touch signal channel, ensuring that the touch pattern that is connected to the communication signal is sufficient, and guaranteeing the touch effect.

[0009] According to one embodiment of the present application, the first connecting portion is in a straight line shape.

[0010] According to an embodiment of the present application, the first connecting portion penetrates the second touch electrode to separate the main portion and the at least a portion of the residual portion.

[0011] According to an embodiment of the present application, the first connecting portion is arranged around the second touch electrode to separate the main body portion and one end of the at least one portion of the remaining portion.

[0012] According to an embodiment of the present application, the first touch electrode includes a plurality of defective portions and a plurality of first connecting portions connected to the defective portions in a one-to-one correspondence.

[0013] According to an embodiment of the present application, the first touch electrodes and the second touch electrodes are both in a grid shape, and the first connecting portion includes at least two grid lines.

[0014] According to an embodiment of the present application, the second touch electrode is spaced apart from the main body portion and the at least one portion of the incomplete portion by at least one grid line from the first connecting portion.

[0015] According to an embodiment of the present application, the main portion of the first touch electrode includes a middle portion and a peripheral portion, the second touch electrode is arranged around the middle portion, and the peripheral portion and the incomplete portion are arranged around the second touch electrode.

[0016] The present application also provides a touch electrode structure, which includes a first touch electrode unit, a second touch electrode unit and a second connecting portion. The first touch electrode unit includes a first touch electrode and a second touch electrode, both of which have incomplete touch patterns formed by a complete touch pattern lacking at least a part. The second touch electrode unit includes a first touch electrode and a second touch electrode, both of which have complete touch patterns. The first touch electrode of the first touch electrode unit is connected to the first touch electrode of the second touch electrode unit, and the second connecting portion is arranged to connect the second touch electrode of the first touch electrode unit and the second touch electrode of the second touch electrode unit.

[0017] According to the touch electrode structure of the present application, by connecting the incomplete touch electrode unit to the adjacent touch electrode unit, the pattern that is not connected to the touch signal channel is reduced, ensuring that the touch pattern connected to the communication signal is sufficient, thereby ensuring the touch effect.

[0018] According to one embodiment of the present application, the area of ​​the first touch electrode unit is smaller than ½ of the area of ​​the second touch electrode unit.

[0019] The present application also provides a display panel, which includes a stacked backplane, a light-emitting layer, an encapsulation layer and a touch layer, the touch layer including a first touch layer, a touch insulation layer and a second touch layer; the touch layer defines at least one of the aforementioned touch electrode units, the touch electrode unit, and a bridge electrode for connecting different touch electrode units is arranged on the first touch layer.

[0020] According to the display panel of the present application, the incomplete touch pattern divided at the edge can be connected to the touch signal channel, ensuring that the touch pattern connected to the communication signal is sufficient, thereby guaranteeing the touch effect.

[0021] According to one embodiment of the present application, the touch electrode unit is located at an edge of the display panel, and the edge of the display panel includes a perforated edge of the display area and a peripheral edge of the display area.

[0022] The present application also provides a display panel, which includes a stacked backplane, a light-emitting layer, an encapsulation layer and a touch layer, wherein the touch layer includes a first touch layer, a touch insulation layer and a second touch layer; the touch layer defines at least one of the aforementioned touch electrode structures, the first touch electrode, the second touch electrode and the connecting portion of the touch electrode structure are arranged on the second touch layer, and the bridge electrode for connecting different touch electrode units is arranged on the first touch layer.

[0023] According to one embodiment of the present application, the touch electrode structure is located at an edge of the display panel, and the edge of the display panel includes a perforated edge of the display area and a peripheral edge of the display area.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] FIG1 is a schematic structural diagram of a complete touch electrode unit provided by an embodiment of the present application;

[0027] FIG2 is a schematic diagram of a structure of a touch electrode unit in a defective state provided by an embodiment of the present application;

[0028] FIG3 is a second structural diagram of a touch electrode unit in a defective state provided by an embodiment of the present application;

[0029] FIG4 is a third structural diagram of a touch electrode unit in a defective state provided by an embodiment of the present application;

[0030] FIG5 is a fourth structural diagram of a touch electrode unit in a defective state provided by an embodiment of the present application;

[0031] FIG6 is a schematic structural diagram of a touch electrode structure provided in an embodiment of the present application;

[0032] FIG7 is a schematic structural diagram of a display panel provided in an embodiment of the present application.

[0033] Reference numerals:

[0034] First touch electrode 100 , middle portion 110 , outer portion 120 , incomplete portion 130 , first connecting portion 140 , second touch electrode 200 , bridge electrode 210 , first touch electrode unit 11 , second touch electrode unit 12 , second connecting portion 13 , backplane 20 , light-emitting layer 30 , encapsulation layer 40 , touch layer 50 , first touch layer 51 , touch insulating layer 52 , and second touch layer 53 . DETAILED DESCRIPTION

[0035] Embodiments of the present application are described in detail below, with examples of the embodiments illustrated in the accompanying drawings. In the accompanying drawings, the sizes of layers, regions, and components, as well as their relative sizes, may be exaggerated for clarity. Throughout, the same or similar reference numerals represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are illustrative and intended only to explain the present application, and are not to be construed as limiting the present application.

[0036] It should be understood that when an element or layer is referred to as being "on," "adjacent to," "connected to," or "coupled to" another element or layer, it can be directly on, adjacent to, connected to, or coupled to the other element or layer, or there can be intervening elements or layers. Conversely, when an element is referred to as being "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" another element or layer, there are no intervening elements or layers. It should be understood that while the terms first, second, third, etc. may be used to describe various elements, components, regions, layers, and / or parts, these elements, components, regions, layers, and / or parts should not be limited by these terms. These terms are merely used to distinguish one element, component, region, layer, or part from another. Thus, without departing from the teachings of the present disclosure, a first element, component, region, layer, or part discussed below may be represented as a second element, component, region, layer, or part. Furthermore, when a second element, component, region, layer, or part is discussed, it does not necessarily mean that the first element, component, region, layer, or part is present in the present disclosure.

[0037] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0038] In the display field, OLED (Organic Light-Emitting Diode) displays are considered an emerging application technology for the next generation of flat-panel displays due to their superior properties. On-cell touch design is a current trend in OLED manufacturing, particularly in foldable products. On-cell technology involves embedding the touch structure between the display's color filter substrate and polarizer. This method allows for a mutual-capacitive touch electrode structure.

[0039] The mutual capacitance touch electrode structure includes a touch drive electrode and a touch sensing electrode. The touch drive electrode and the touch sensing electrode form a mutual capacitance for touch sensing. The touch drive electrode is used to input an excitation signal (touch drive signal), and the touch sensing electrode is used to output a touch sensing signal. By inputting an excitation signal to, for example, a touch drive electrode extending longitudinally and receiving a touch sensing signal from, for example, a touch sensing electrode extending transversely, the capacitance value of the coupling point (for example, an intersection) of the transverse and longitudinal electrodes can be obtained. When a finger touches the capacitive screen, it affects the coupling between the touch drive electrode and the touch sensing electrode near the touch point, thereby changing the capacitance between the two electrodes. Based on the two-dimensional capacitance change data of the touch screen, the coordinates of each touch point (intersection) can be calculated.

[0040] However, in current touchscreen designs, due to the limitations of the display panel's shape, the edges of the display panel or the display area perforation (AA hole) are typically curved, while the edges of each unit in the touch pattern are typically straight lines. This results in an incomplete touchscreen pattern at the edges. Furthermore, within the incomplete pattern, the pattern for the desired access channel signal is also incomplete. The degree of this incompleteness is closely related to the pattern's internal design and layout. This is especially true for active pen patterns, which have relatively complex internal patterns, making it essential to optimize the internal design.

[0041] The present application proposes a touch electrode unit, structure and display panel, which connect the divided patterns, thereby reducing the patterns that are not connected to the touch signal channel, ensuring that the touch patterns that are connected to the communication signal are sufficient, and guaranteeing the touch effect.

[0042] Referring to Figure 1, a complete touch electrode unit is shown. The touch electrode unit includes a first touch electrode 100 and a second touch electrode 200. The first touch electrode 100 can be a touch drive electrode, and the second touch electrode 200 can be a touch sensing electrode; alternatively, the first touch electrode 100 can be a touch sensing electrode, and the second touch electrode 200 can be a touch drive electrode.

[0043] The first touch electrode 100 includes a central portion 110 and a peripheral portion 120. In this pattern, the central portion 110 is located at the center of the pattern. The central portion 110 extends upward and downward to form the peripheral portion 120. The peripheral portion 120 includes a first portion extending from above the central portion 110 and a second portion extending from below the central portion 110. Multiple first interdigital portions are formed on the central portion 110 and the peripheral portion 120. These first interdigital portions engage with the second interdigital portions on the second touch electrode 200 to increase the facing area.

[0044] The second touch electrode 200 includes a third portion and a fourth portion that are symmetrical. The third and fourth portions are curved and have multiple second interdigitated portions, with adjacent fold lines forming 90-degree angles. The third and fourth portions are arranged on the left and right sides of the central portion 110, respectively, to surround the central portion 110. The third and fourth portions form bridges above and below the central portion 110, respectively, connecting the third and fourth portions. The peripheral portion 120 extends outward from the bridges and extends to both sides to surround the third and fourth portions of the second touch electrode 200.

[0045] As can be seen, the width of the portion of the peripheral portion 120 surrounding the second touch electrode 200 is relatively small, so when the touch electrode unit is arranged on the curved edge, the peripheral portion 120 is easily cut off. The cut peripheral portion 120 is not connected to the middle portion 110 and cannot perform the touch detection function.

[0046] The following describes various embodiments of the present application with reference to the touch electrode unit shown in Figure 1. Of course, the touch electrode unit can also be in other shapes, which is not limited in this embodiment.

[0047] Referring to Figure 2, Figure 2 shows a touch electrode unit in a defective state. One embodiment of the present application provides a touch electrode unit, which is defined as being in a defective state, and includes a first touch electrode 100 and a second touch electrode 200. The first touch electrode 100 includes a main body and a defective portion 130, and the main body and the defective portion 130 are separated by a portion of the second touch electrode 200. The first touch electrode 100 also includes a first connecting portion 140. The first connecting portion 140, the main body, the defective portion 130, and the second touch electrode 200 are arranged in the same layer, and the first connecting portion 140 is spaced apart from the second touch electrode 200 and connected to the main body and the defective portion 130, respectively.

[0048] The display panel is provided with a plurality of repeatedly arranged touch electrode units. The touch electrode units at positions away from the edge of the display panel are usually in a complete state. The electrodes in such complete touch electrode units are the same as the designed touch pattern, as shown in Figure 1. When the touch electrode units are arranged close to the edge of the display panel, in order to adapt to the shape of the edge, the portion exceeding the edge will be removed, thereby being defined as an incomplete state. Compared with the designed touch pattern, some electrodes in such incomplete touch electrode units are missing part of the pattern. Among them, the edge of the display panel can be the edge of the display area perforation and the peripheral edge of the display area.

[0049] In addition, the spacing between the display area perforation edge and the display area periphery edge in some display panels is small, and the touch electrode units arranged between the display area perforation edge and the display area periphery edge may also be incomplete. As shown in Figure 1, the left side of the touch electrode unit is the display area perforation edge, and the right side of the touch electrode unit is the display area periphery edge.

[0050] Compared with the intact state, the first touch electrode 100 and the second touch electrode 200 in the touch electrode unit in the incomplete state are both incomplete. The first touch electrode 100 located at the outermost periphery is prone to have a discontinuous main body and incomplete portion 130 due to partial incompleteness.

[0051] The main body of the first touch electrode 100 includes a middle portion 110 and an undivided peripheral portion 120. The defective portion 130 is formed by the divided peripheral portion 120. Comparing Figures 1 and 2 , the lower right portion of the touch electrode unit in this embodiment is defective. The main body and the defective portion 130 are separated by a portion of the second touch electrode 200 (hereinafter referred to as the spacer).

[0052] It should be noted that the first connecting portion 140, the main body, the defective portion 130, and the second touch electrode 200 are arranged in the same layer. In the defective state, the space occupied by the spacer of the second touch electrode 200 is used as the first connecting portion 140. The two ends of the first connecting portion 140 are respectively connected to the main body and the defective portion 130, thereby reconnecting the defective portion 130 to the main body and allowing it to be used again for touch detection.

[0053] According to the touch electrode unit of the present application, a connecting portion is provided in the incomplete first touch electrode 100 to connect the divided main portion and the incomplete portion, thereby reducing the pattern that is not connected to the touch signal channel, ensuring that the touch pattern that is connected to the communication signal is sufficient, and guaranteeing the touch effect.

[0054] In some embodiments, the first connection portions 140 are arranged along a straight line.

[0055] The straight line shape of the first connection portion 140 can shorten the length of the first connection portion 140. In addition, the first connection portion 140 can be connected to the position where the main body and the defective portion 130 are closest to each other, which can shorten the length of the first connection portion 140 and reduce the signal transmission distance.

[0056] 2 and 3 , FIG3 also shows a touch electrode unit in a defective state. In some embodiments, the first connection portion 140 is arranged to pass through the portion of the second touch electrode 200 that separates the main portion and the defective portion 130 .

[0057] In this embodiment, the extension direction of the first connection portion 140 is perpendicular to the extension direction of the spacing portion of the second touch electrode 200 . The first connection portion 140 passes through the middle of the spacing portion to connect the main portion and the residual portion 130 on both sides of the spacing portion.

[0058] It should be noted that touch signal lines are usually provided at the outer edge of the display area, and these touch signal lines are connected to the second touch electrodes 200. Therefore, even if the first connection portion 140 passes through the spacer, dividing the spacer into two separate parts, the spacer near the edge can still transmit signals through the touch signal lines, and the touch function can still be realized.

[0059] 4 , which also shows a touch electrode unit in a defective state, in some embodiments, the first connection portion 140 is arranged around the end of the portion of the second touch electrode 200 that separates the main portion and the defective portion 130 .

[0060] In this embodiment, the extension direction of the first connection portion 140 is perpendicular to the extension direction of the spacing portion of the second touch electrode 200 . The first connection portion 140 is arranged at the end of the spacing portion to connect the main portion and the residual portion 130 on both sides of the spacing portion.

[0061] Since the first connecting portion 140 does not pass through the middle of the spacer, the spacer is not divided. In the case where the second touch electrode 200 near the edge of the display area is not connected to the touch signal line, the first connecting portion 140 will not cause additional defective patterns around the end of the spacer.

[0062] 5 , which also shows a touch electrode unit in a defective state, in some embodiments, the first touch electrode 100 includes a plurality of defective portions 130 and a plurality of first connecting portions 140 connected to the defective portions 130 in a one-to-one correspondence.

[0063] In this embodiment, the touch electrode units are arranged at multiple edges, such as the intersection of two adjacent edges of the display area. Because the touch electrode units need to adapt to multiple edges, multiple defective portions 130 may appear. In this case, the touch electrode units need to be provided with multiple first connecting portions 140 to connect each defective portion 130 to the main body.

[0064] As an example, some of the first connection portions 140 in the first touch electrode 100 may be arranged to pass through the middle of the spacing portion of the second touch electrode 200 , and other parts may be arranged around the ends of the spacing portion of the second touch electrode 200 .

[0065] In some embodiments, the first touch electrodes 100 and the second touch electrodes 200 are both in a grid shape, and the first connecting portion 140 includes at least two grid lines.

[0066] It should be noted that since the touch structure is arranged above the pixel array, to prevent the touch electrode wiring from affecting the pixel light transmittance, the touch electrode wiring is arranged between the pixels. The resulting touch electrode grid pattern. The grid area is the pixel area, and the grid lines are arranged between the pixels. Typically, the grid line width is about 3mm.

[0067] The first touch electrode 100 and the second touch electrode 200 may include a plurality of grid lines, and their coverage range may be designed according to the touch pattern, which is not limited in this embodiment.

[0068] In this embodiment, the first connection portion 140 includes at least two grid lines, which can ensure reliable transmission of touch signals. The two grid lines can be arranged adjacent to each other or spaced apart.

[0069] In some embodiments, the first connection portion 140 and the second touch electrode 200 are separated from the main portion and the remaining portion 130 by at least one grid line.

[0070] In this embodiment, the first connecting portion 140 and the spacer portion of the second touch electrode 200 facing each other are separated by at least one grid line, that is, at least the width of two pixels. This reduces the coupling between the first touch electrode 100 and the second touch electrode 200.

[0071] Referring to Figure 6 , which shows a touch electrode structure, an embodiment of the present application further provides a touch electrode structure.

[0072] In this embodiment, the touch electrode structure includes a first touch electrode unit 11, a second touch electrode unit 12 and a second connecting portion 13. The first touch electrode unit 11 includes a first touch electrode and a second touch electrode, both of which are in a defective state. The second touch electrode unit 12 includes a first touch electrode and a second touch electrode, both of which are in a complete state. The first touch electrode in the defective state of the first touch electrode unit 11 is connected to the first touch electrode in the complete state of the second touch electrode unit 12. The second connecting portion 13 is arranged to connect the second touch electrode in the defective state of the first touch electrode unit 11 and the second touch electrode in the complete state of the second touch electrode unit 12.

[0073] In this embodiment, the first touch electrode unit 11 is in an incomplete state, and the second touch electrode unit 12 is in a complete state. Both touch electrode units include a first touch electrode and a second touch electrode. The first touch electrode may refer to a touch drive electrode, and the second touch electrode may refer to a touch sensing electrode, or the first touch electrode may refer to a touch sensing electrode, and the second touch electrode may refer to a touch drive electrode. Usually, when the touch electrode units are arranged normally, only a corresponding set of electrodes are connected to each other in a certain direction. For example, in the row direction, the touch drive electrodes of two adjacent touch electrode units are connected; or, in the column direction, the touch sensing electrodes of two adjacent touch electrode units are connected. In this embodiment, the second connecting portion 13 is used to connect a set of electrodes that are not connected when the touch electrode units are arranged normally. For example, if the first touch electrode unit 11 and the second touch electrode unit 12 are arranged along the row direction, the second connecting portion 13 connects the touch sensing electrodes in the two touch electrode units; or if the first touch electrode unit 11 and the second touch electrode unit 12 are arranged along the column direction, the second connecting portion 13 connects the touch driving electrodes of the two touch electrode units.

[0074] Continuing with FIG1 , taking the touch electrode unit shown in FIG1 as an example, the first touch electrode unit 11 is in a defective state, wherein the first touch electrode 100 and the second touch electrode 200 are both in a defective state, and the first touch electrode 100 is not connected to other adjacent touch electrode units, and the first touch electrode 100 cannot perform normal actual touch detection.

[0075] The second touch electrode unit 12 may be in a complete state. By connecting the first touch electrode 100 in the first touch electrode unit 11 to the first touch electrode 100 in the second touch electrode unit 12 , the first touch electrode unit 11 can still realize the touch function.

[0076] According to the touch electrode structure of the present application, by connecting the incomplete touch electrode unit to the adjacent touch electrode unit, the pattern that is not connected to the touch signal channel is reduced, ensuring that the touch pattern connected to the communication signal is sufficient, thereby ensuring the touch effect.

[0077] In some embodiments, the area of ​​the first touch electrode unit 11 is less than ½ of the area of ​​the second touch electrode unit 12 .

[0078] It should be noted that if the first touch electrode unit 11 has a minor defect, the solution of the aforementioned embodiment can be adopted, that is, the defective portion 130 in the first touch electrode 100 is connected to the main portion. However, if the first touch electrode unit 11 has a major defect, the main portion of the first touch electrode 100 cannot achieve signal transmission. In this case, the defective portion of the first touch electrode 100 can be connected to the first touch electrode 100 in the adjacent touch electrode unit.

[0079] Referring to FIG7 , one embodiment of the present application further provides a display panel comprising a stacked backplane 20, a light-emitting layer 30, an encapsulation layer 40, and a touch layer 50. The touch layer 50 comprises a first touch layer 51, a touch insulating layer 52, and a second touch layer 53. The touch layer 50 defines the aforementioned touch electrode unit or the aforementioned touch electrode structure. The first touch electrode 100, the second touch electrode 200, and the connecting portion of the touch electrode unit or the touch electrode structure are disposed on the second touch layer 53, and the bridge electrode 210 is disposed on the first touch layer 51. The specific structure and principles of the touch electrode unit and the touch electrode structure can be referenced from the aforementioned embodiments and will not be further described in this embodiment.

[0080] As shown in Figure 7, as an example, the left and right sides of the dashed line represent two touch electrode units, with bridge electrodes 210 used to bridge the second touch electrodes 200 in the two touch electrode units. The touch electrode unit on the right is incomplete, with a first connecting portion 140 located in the middle of the second touch electrode 200. The first connecting portion 140 connects the main portion and the incomplete portion 130 of the first touch electrode 100 within a touch electrode unit. The first touch electrode 100, first connecting portion 140, and second touch electrode 200 are arranged on the same layer.

[0081] According to the display panel of the present application, the incomplete touch pattern divided at the edge can be connected to the touch signal channel, ensuring that the touch pattern connected to the communication signal is sufficient, thereby guaranteeing the touch effect.

[0082] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A touch electrode unit, wherein the touch pattern of the touch electrode unit is a touch electrode unit having an incomplete touch pattern formed by lacking at least a part of a complete touch pattern, the touch electrode unit comprising a first touch electrode and a second touch electrode, the first touch electrode comprising a main body portion corresponding to a complete part of the touch pattern and an incomplete portion corresponding to the touch pattern having a missing part, the main body portion and the incomplete portion being separated by at least a part of the second touch electrode; in, The first touch electrode also includes a first connecting portion, the first connecting portion, the main body, the incomplete portion and the second touch electrode are arranged in the same layer, the first connecting portion and the second touch electrode are spaced apart from each other, and the first connecting portion is respectively connected to the main body and the incomplete portion. 2 . The touch electrode unit according to claim 1 , wherein the first connecting portion is in a straight line shape. 3 . The touch electrode unit according to claim 2 , wherein the first connection portion penetrates through the second touch electrode to separate the main body portion from the at least a portion of the residual portion. 4 . The touch electrode unit according to claim 2 , wherein the first connection portion is arranged around one end of the second touch electrode that separates the main body portion and the at least one portion of the residual portion. 5 . The touch electrode unit according to claim 1 , wherein the first touch electrode comprises a plurality of defective portions and a plurality of first connecting portions connected to the defective portions in a one-to-one correspondence. 6 . The touch electrode unit according to claim 1 , wherein the first touch electrode and the second touch electrode are both in a grid shape, and the first connecting portion comprises at least two grid lines. 7 . The touch electrode unit according to claim 6 , wherein the second touch electrode is spaced apart from the main body portion and the at least one portion of the residual portion by at least one grid line from the first connecting portion.

8. The touch electrode unit according to any one of claims 1 to 4, wherein the main body of the first touch electrode comprises a middle portion and a peripheral portion, the second touch electrode is arranged around the middle portion, and the peripheral portion and the incomplete portion are arranged around the second touch electrode.

9. A touch electrode structure, comprising a first touch electrode unit, a second touch electrode unit and a second connecting portion, the first touch electrode unit comprising a first touch electrode and a second touch electrode, both of which have incomplete touch patterns formed by a complete touch pattern lacking at least a part, the second touch electrode unit comprising a first touch electrode and a second touch electrode, both of which have complete touch patterns, the first touch electrode of the first touch electrode unit is connected to the first touch electrode of the second touch electrode unit, and the second connecting portion is arranged to connect the second touch electrode of the first touch electrode unit and the second touch electrode of the second touch electrode unit. 10 . The touch electrode structure according to claim 9 , wherein an area of ​​the first touch electrode unit is smaller than 1 / 2 of an area of ​​the second touch electrode unit.

11. A display panel, comprising a stacked backplane, a light-emitting layer, an encapsulation layer and a touch layer, the touch layer comprising a first touch layer, a touch insulating layer and a second touch layer; the touch layer defines at least one touch electrode unit according to any one of claims 1-8, the touch electrode unit is arranged in the second touch layer, and a bridge electrode for connecting different touch electrode units is arranged in the first touch layer. 12 . The display panel according to claim 11 , wherein the touch electrode unit is located at an edge of the display panel, and the edge of the display panel includes a perforated edge of a display area and an outer peripheral edge of the display area.

13. A display panel, comprising a stacked backplane, a light-emitting layer, an encapsulation layer and a touch layer, the touch layer comprising a first touch layer, a touch insulating layer and a second touch layer; the touch layer defines at least one touch electrode structure according to claim 9 or 10, the first touch electrode, the second touch electrode and the connecting part of the touch electrode structure are arranged on the second touch layer, and the bridge electrode for connecting different touch electrode units is arranged on the first touch layer. 14 . The display panel according to claim 13 , wherein the touch electrode structure is located at an edge of the display panel, and the edge of the display panel includes a perforated edge of a display area and an outer peripheral edge of the display area.

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