Touch electrode unit, touch electrode structure and display panel

Abstract

The invention discloses a touch electrode unit, a touch electrode structure and a display panel, and belongs to the technical field of display equipment. The touch electrode unit is limited to be in an incomplete state, the touch electrode unit comprises a first touch electrode and a second touch electrode, the first touch electrode comprises a main body part and an incomplete part, and the main body part and the incomplete part are separated by a part of the second touch electrode; wherein the first touch electrode further comprises a first connecting part, and the first connecting part and the second touch electrode are arranged in a crossed mode so as to be connected with the main body part and the incomplete part respectively. According to the touch electrode unit, the connecting part is arranged in the incomplete first touch electrode to connect the divided main body part and the incomplete part, so that patterns which are not accessed to a touch signal channel are reduced, the touch patterns accessed to a communication signal are ensured to be sufficient, and the touch effect is ensured.

Description

Technical Field

[0001] This application belongs to the technical field of display devices, and particularly relates to a touch electrode unit, a structure, and a display panel. Background Art

[0002] Display panels with touch functions are widely used in various electronic devices, and the touch pattern has a great influence on the touch sensitivity. At present, due to the irregular shape of the display panel, the touch pattern is incomplete at the edge of the display panel, affecting the touch performance. Summary of the Invention

[0003] This application aims to solve at least one of the technical problems existing in the prior art. For this purpose, this application provides a touch electrode unit, a structure, and a display panel, which connect the divided main body part and the incomplete part to improve the touch effect.

[0004] In a first aspect, this application provides a touch electrode unit, which is defined in an incomplete state. The touch electrode unit includes a first touch electrode and a second touch electrode. The first touch electrode includes a main body part and an incomplete part, and the main body part and the incomplete part are separated by a part of the second touch electrode;

[0005] Wherein, the first touch electrode further includes a first connection part. The first connection part, the main body part, the incomplete part, and the second touch electrode are arranged in the same layer. The first connection part is arranged at an interval from the second touch electrode, and is respectively connected to the main body part and the incomplete part.

[0006] According to the touch electrode unit of this application, a connection part is arranged in the incomplete first touch electrode to connect the divided main body part and the incomplete part, thereby reducing the pattern that does not access the touch signal channel, ensuring that the touch pattern accessing the communication signal is sufficient, and guaranteeing the touch effect.

[0007] According to an embodiment of this application, the first connection part is arranged in a straight line.

[0008] According to an embodiment of this application, the first connection part is arranged through the part of the second touch electrode that separates the main body part and the incomplete part.

[0009] According to an embodiment of this application, the first connection part is arranged around the end of the part of the second touch electrode that separates the main body part and the incomplete part.

[0010] According to an embodiment of this application, the first touch electrode includes a plurality of incomplete parts and a plurality of first connection parts respectively connected to each incomplete part.

[0011] According to an embodiment of this application, both the first touch electrode and the second touch electrode are in a grid shape, and the first connection part includes at least two grid lines.

[0012] According to an embodiment of the present application, the first connection part and the second touch electrode are spaced apart from the part of the main body part and the incomplete part by at least one grid line.

[0013] According to an embodiment of the present application, the main body part of the first touch electrode includes an intermediate part and a peripheral part, the second touch electrode is arranged around the intermediate part, and the peripheral part and the incomplete part are arranged around the second touch electrode.

[0014] In a second aspect, the present application provides a touch electrode structure, including a first touch electrode unit, a second touch electrode unit, and a second connection part. The first touch electrode unit includes a first touch electrode and a second touch electrode both in an incomplete state, the second touch electrode unit includes a first touch electrode and a second touch electrode both in a complete state. The incomplete first touch electrode of the first touch electrode unit is connected to the complete first touch electrode of the second touch electrode unit, and the second connection part is arranged to connect the incomplete second touch electrode of the first touch electrode unit and the complete second touch electrode of the second touch electrode unit.

[0015] 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 does not access the touch signal channel is reduced, ensuring that the touch pattern accessing the communication signal is sufficient, and guaranteeing the touch effect.

[0016] According to an embodiment of the present application, the area of the first touch electrode unit is less than 1 / 2 of the area of the second touch electrode unit.

[0017] In a third aspect, the present application provides a display panel, including a stacked backplane, a light-emitting layer, a packaging layer, and a touch layer. The touch layer includes a first touch layer, a touch insulating layer, and a second touch layer; the touch layer defines the touch electrode unit according to the foregoing or the touch electrode structure according to the foregoing. The first touch electrode, the second touch electrode, and the connection part of the touch electrode unit or the touch electrode structure are arranged on the second touch layer, and the bridge electrode is arranged on the first touch layer.

[0018] According to the display panel of the present application, the incomplete touch pattern divided at the edge can access the touch signal channel, ensuring that the touch pattern accessing the communication signal is sufficient, and guaranteeing the touch effect.

[0019] According to an embodiment of the present application, the edge of the display panel includes the edge of the punched display area and the outer peripheral edge of the display area.

[0020] The additional aspects and advantages of the present application will be partly given in the following description, partly become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0021] 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:

[0022] Figure 1 is a schematic structural diagram of a touch electrode unit in a complete state provided by an embodiment of the present application;

[0023] Figure 2 This is one of the structural schematic diagrams of a touch electrode unit in a defective state provided in an embodiment of the present application;

[0024] Figure 3 This is the second structural schematic diagram of the touch electrode unit in a defective state provided in the embodiment of the present application;

[0025] Figure 4 This is the third structural schematic diagram of the touch electrode unit in a defective state provided in the embodiment of the present application;

[0026] Figure 5 This is the fourth structural schematic diagram of the touch electrode unit in a defective state provided in the embodiment of the present application;

[0027] Figure 6 is a schematic structural diagram of a touch electrode structure provided in an embodiment of the present application;

[0028] Figure 7 It is a schematic diagram of the structure of the display panel provided in the embodiment of the present application.

[0029] Reference numerals:

[0030] A first touch electrode 100 , a middle portion 110 , a peripheral portion 120 , a defective portion 130 , a first connecting portion 140 , a second touch electrode 200 , a bridge electrode 210 , a first touch electrode unit 11 , a second touch electrode unit 12 , a second connecting portion 13 , a back plate 20 , a light emitting layer 30 , an encapsulation layer 40 , a touch layer 50 , a first touch layer 51 , a touch insulating layer 52 , and a second touch layer 53 . DETAILED DESCRIPTION

[0031] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings. In the accompanying drawings, for clarity, the sizes of layers, regions, elements and their relative sizes may be exaggerated. The same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0032] It should be understood that when an element or layer is referred to as "on", "adjacent to", "connected to", or "coupled to" another element or layer, it can be directly on, adjacent to, connected, or coupled to the other element or layer, or there may be intervening elements or layers. In contrast, when an element is referred to as "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 although 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 only used to distinguish one element, component, region, layer, or part from another element, component, region, layer, or part. Thus, without departing from the teachings of the present disclosure, the first element, component, region, layer, or part discussed below may be referred to as the second element, component, region, layer, or part. And when discussing the second element, component, region, layer, or part, it does not indicate that the present disclosure necessarily has a first element, component, region, layer, or part.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0034] In the display field, OLED (Organic Light-Emitting Diode) display is considered an emerging application technology for the next generation of flat panel displays due to its excellent characteristics. In OLED manufacturing technology, the On cell touch design is the current trend, especially having outstanding advantages in folding products. On Cell refers to a method of embedding a touch structure between the color filter substrate and the polarizer of the display screen. The touch structure in this method can be a mutual capacitance touch electrode structure.

[0035] The capacitive touch electrode structure includes a touch driving electrode and a touch sensing electrode. The touch driving electrode and the touch sensing electrode form a mutual capacitance for touch sensing. The touch driving electrode is used to input an excitation signal (touch driving signal), and the touch sensing electrode is used to output a touch sensing signal. By inputting an excitation signal to the touch driving electrode extending, for example, longitudinally, and receiving the touch sensing signal from the touch sensing electrode extending, for example, laterally, the capacitance value of the coupling point (e.g., intersection point) between the horizontal and vertical electrodes can be obtained. When a finger touches the capacitive screen, the coupling between the touch driving electrode and the touch sensing electrode near the touch point is affected, thereby changing the capacitance between the two electrodes. According to the two-dimensional capacitance change data of the touch screen, the coordinates of each touch point (intersection point) can be calculated.

[0036] However, in the current touch designs, due to the limitation of the shape of the display panel, the edges of the display panel or the edges of the AA hole are usually arc-shaped, while the edges of each unit in the touch pattern are usually straight lines. Thus, the shape of the touch pattern at the edge is incomplete. Also, inside the incomplete pattern, the pattern expected to access the channel signal is also incomplete, and the degree of this incompleteness has a great relationship with the internal design of the pattern and the arrangement of the patterns. Especially for the active pen pattern, its internal pattern is relatively complex, so it is necessary to optimize the internal design.

[0037] This application proposes a touch electrode unit, structure, and display panel, which connect the divided patterns, thereby reducing the patterns that do not access the touch signal channel, ensuring that the touch patterns accessing the communication signal are sufficient, and guaranteeing the touch effect.

[0038] Referring to Figure 1 , Figure 1 shows a touch electrode unit in a complete state. The touch electrode unit includes a first touch electrode 100 and a second touch electrode 200. Among them, the first touch electrode 100 can be a touch driving electrode, and the second touch electrode 200 is a touch sensing electrode; or, the first touch electrode 100 can be a touch sensing electrode, and the second touch electrode 200 is a touch driving electrode.

[0039] The first touch electrode 100 includes a middle portion 110 and a peripheral portion 120. In this pattern, the middle portion 110 is located at the center of the pattern. The middle portion 110 extends from the upper and lower directions to form the peripheral portion 120. The peripheral portion 120 includes a first part extending from above the middle portion 110 and a second part extending from below the middle portion 110. A plurality of first finger portions are formed on the middle portion 110 and the peripheral portion 120, and the first finger portions mesh with the second finger portions on the second touch electrode 200 to increase the facing area.

[0040] The second touch electrode 200 includes a third part and a fourth part that are symmetric about the left and right. The third part and the fourth part are bent and are formed with a plurality of second interdigital parts, and the angle between adjacent two broken lines is 90 degrees. The third part and the fourth part are respectively arranged on the left and right sides of the middle part 110 to surround the middle part 110. At this time, the third part and the fourth part respectively form a cross bridge above and below the middle part 110, and the cross bridge connects the third part and the fourth part. The peripheral part 120 extends outward from the cross bridge and extends to both sides to surround the third part and the fourth part of the second touch electrode 200.

[0041] It can be seen that the width of the part of the peripheral part 120 surrounding the second touch electrode 200 is small. Therefore, when the touch electrode unit is arranged on the arc-shaped edge, the peripheral part 120 is easily cut off. The separated peripheral part 120 cannot perform the touch detection function because it is not connected to the middle part 110.

[0042] The following refers to Figure 1 the shown touch electrode unit to describe the embodiments of the present application. Of course, the touch electrode unit can also be of other shapes, and the present embodiment does not limit this.

[0043] Refer to Figure 2 , Figure 2 shows a touch electrode unit in a defective state. An embodiment of the present application provides a touch electrode unit, which is defined in a defective state. The touch electrode unit includes a first touch electrode 100 and a second touch electrode 200. The first touch electrode 100 includes a main body part and a defective part 130, and the main body part and the defective part 130 are separated by a part of the second touch electrode 200; wherein, the first touch electrode 100 further includes a first connection part 140. The first connection part 140, the main body part, the defective part 130 and the second touch electrode 200 are arranged in the same layer. The first connection part 140 is arranged at an interval from the second touch electrode 200 and is respectively connected to the main body part and the defective part 130.

[0044] A plurality of repeatedly arranged touch electrode units are provided on the display panel. The touch electrode units at positions far from the edge of the display panel are usually in a complete state, and 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 unit is arranged near the edge of the display panel, in order to adapt to the shape of the edge, the part exceeding the edge will be removed, so as to be defined in a defective state. Compared with the designed touch pattern, some patterns are missing in some electrodes in such defective touch electrode units. Among them, the edge of the display panel can be the edge of the punched hole in the display area and the outer peripheral edge of the display area.

[0045] In addition, in some display panels, the distance between the outer peripheral edge outside the display area and the punching edge of the display area is small, and the touch electrode unit arranged between the outer peripheral edges outside the display area at the punching edge of the display area may also be in a defective state. As Figure 1 shown, the left side of the touch electrode unit is the punching edge of the display area, and the right side of the touch electrode unit is the outer peripheral edge outside the display area.

[0046] Compared with the complete state, both the first touch electrode 100 and the second touch electrode 200 in the defective touch electrode unit are defective. The outermost first touch electrode 100 in a surrounding shape is likely to have a discontinuous main body part and a defective part 130 due to partial defects.

[0047] The main body part of the first touch electrode 100 includes the middle part 110 and the undivided outer peripheral part 120 of the first touch electrode 100, and the defective part 130 is formed by the divided outer peripheral part 120. Refer to Figure 1 and Figure 2 , in the touch electrode unit of the present embodiment, the lower right part is defective, and the main body part and the defective part 130 are separated by a part of the second touch electrode 200 (hereinafter referred to as the spacer part).

[0048] It should be noted that the first connection part 140, the main body part, the defective part 130 and the second touch electrode 200 are arranged in the same layer. In the defective state, the part of the space occupied by the spacer part of the second touch electrode 200 is set as the first connection part 140. Both ends of the first connection part 140 are respectively connected to the main body part and the defective part 130, so as to reconnect the defective part 130 to the main body part, and the defective part 130 can be reused for touch detection.

[0049] According to the touch electrode unit of the present application, a connection part is arranged in the defective first touch electrode 100 to connect the divided main body part and the defective part, so as to reduce the pattern without accessing the touch signal channel, ensure that the touch pattern accessing the communication signal is sufficient, and guarantee the touch effect.

[0050] In some embodiments, the first connection part 140 is arranged in a straight line.

[0051] The form that the first connection part 140 samples a straight line can shorten the length of the first connection part 140. In addition, the first connection part 140 can be connected to the position where the main body part and the defective part 130 are closest to each other, which can shorten the length of the first connection part 140 and also reduce the signal transmission distance.

[0052] Refer to Figure 2 and Figure 3 , Figure 3 also shows a touch electrode unit in a defective state. In some embodiments, the first connection part 140 is arranged through the part of the second touch electrode 200 that separates the main body part and the defective part 130.

[0053] In this embodiment, the extending direction of the first connecting portion 140 is perpendicular to the extending direction of the spaced portion of the second touch electrode 200, and the first connecting portion 140 passes through the middle of the spaced portion to connect the main body portion and the incomplete portion 130 on both sides of the spaced portion.

[0054] It should be noted that touch signal lines are usually provided at the outer peripheral edge outside the display area, and the touch signal lines are connected to the second touch electrode 200. Therefore, even if the first connecting portion 140 divides the spaced portion into two separate parts after passing through the spaced portion, the spaced portion near the edge side can still transmit signals through the touch signal lines, and it can still achieve the touch function.

[0055] Refer to Figure 4 , Figure 4 An incomplete touch electrode unit is also shown. In some embodiments, the first connecting portion 140 is arranged around the end of the portion where the main body portion and the incomplete portion 130 are spaced apart by the second touch electrode 200.

[0056] In this embodiment, the extending direction of the first connecting portion 140 is perpendicular to the extending direction of the spaced portion of the second touch electrode 200, and the first connecting portion 140 is arranged at the end of the spaced portion to connect the main body portion and the incomplete portion 130 on both sides of the spaced portion.

[0057] Since it does not pass through the middle of the spaced portion, the division of the spaced portion is avoided. In the case where the second touch electrode 200 is not connected to the touch signal line at one end close to the edge of the display area, the first connecting portion 140 winding around the end of the spaced portion will not cause an additional incomplete pattern.

[0058] Refer to Figure 5 , Figure 5 An incomplete touch electrode unit is also shown. In some embodiments, the first touch electrode 100 includes a plurality of incomplete portions 130 and a plurality of first connecting portions 140 respectively connected to the respective incomplete portions 130.

[0059] In this embodiment, the touch electrode unit is arranged at multiple edges, such as the intersection of two adjacent edges of the display area. Since the touch electrode unit needs to adapt to multiple edges, multiple incomplete portions 130 may occur. At this time, the touch electrode unit needs to be provided with a plurality of first connecting portions 140 to connect each incomplete portion 130 to the main body portion.

[0060] As an example, some of the first connecting portions 140 in the first touch electrode 100 may be arranged to penetrate through the middle of the spaced portion of the second touch electrode 200, and some other portions may be arranged to wind around the end of the spaced portion of the second touch electrode 200.

[0061] In some embodiments, both the first touch electrode 100 and the second touch electrode 200 are in a grid shape, and the first connection portion 140 includes at least two grid lines.

[0062] It should be noted that since the touch structure is arranged above the pixel array, in order to avoid the influence of the touch electrode traces on pixel light transmission, the touch electrode traces are arranged between pixels, and thus the formed touch electrodes are in a grid shape. Among them, the pixel area is in the grid, and the grid lines are arranged between pixels. Generally, the width of the grid lines is about 3 mm.

[0063] The first touch electrode 100 and the second touch electrode 200 may include multiple grid lines, and their coverage range can be designed according to the touch pattern, and this embodiment does not limit this.

[0064] In this embodiment, the first connection portion 140 includes at least two grid lines, which can ensure the reliable transmission of touch signals. Among them, the two grid lines can be arranged adjacent to each other or spaced apart.

[0065] In some embodiments, the first connection portion 140 and the second touch electrode 200 are spaced apart from the main body portion and the incomplete portion 130 by at least one grid line.

[0066] In this embodiment, the portion of the first connection portion 140 facing the spaced portion of the second touch electrode 200 is spaced apart by at least one grid line, that is, at least the width of two pixels. Thus, the coupling between the first touch electrode 100 and the second touch electrode 200 is reduced.

[0067] Refer to Figure 6 , Figure 6 which shows a touch electrode structure. An embodiment of the present application also provides a touch electrode structure.

[0068] In this embodiment, the touch electrode structure includes a first touch electrode unit 11, a second touch electrode unit 12, and a second connection portion 13. The first touch electrode unit 11 includes a first touch electrode and a second touch electrode that are both in an incomplete state. The second touch electrode unit 12 includes a first touch electrode and a second touch electrode that are both in a complete state. The incomplete first touch electrode of the first touch electrode unit 11 is connected to the complete first touch electrode of the second touch electrode unit 12, and the second connection portion 13 is arranged to connect the incomplete second touch electrode of the first touch electrode unit 11 and the complete second touch electrode of the second touch electrode unit 12.

[0069] In this embodiment, the first touch electrode unit 11 is in a defective 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 driving electrode, and the second touch electrode refers to a touch sensing electrode, or the first touch electrode may refer to a touch sensing electrode, and the second touch electrode refers to a touch driving electrode. Usually, when the touch electrode units are arranged normally, in a certain direction, only a corresponding group of electrodes are connected to each other. For example, in the row direction, the touch driving 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 connection portion 13 is used to connect a group 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 in the row direction, the second connection 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 in the column direction, the second connection portion 13 connects the touch driving electrodes of the two touch electrode units.

[0070] Continue to refer to Figure 1 , taking Figure 1 the touch electrode unit shown as an example. The first touch electrode unit 11 is in a defective state, where both the first touch electrode 100 and the second touch electrode 200 are in a defective state, and the first touch electrode 100 is not connected to other adjacent touch electrode units, and this first touch electrode 100 cannot perform normal actual touch detection.

[0071] The second touch electrode unit 12 can 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 achieve the touch function.

[0072] According to the touch electrode structure of the present application, by connecting the defective touch electrode unit to the adjacent touch electrode unit, the pattern that does not access the touch signal channel is reduced, ensuring that the touch pattern accessing the communication signal is sufficient, and guaranteeing the touch effect.

[0073] In some embodiments, the area of the first touch electrode unit 11 is less than 1 / 2 of the area of the second touch electrode unit 12.

[0074] It should be noted that when the defect of the first touch electrode unit 11 is relatively small, the solution of the foregoing embodiment can be adopted, that is, the defective part 130 in the first touch electrode 100 is connected to the main body part. However, when the defect of the first touch electrode unit 11 is relatively large, the main body part of the first touch electrode 100 cannot achieve signal transmission. At this time, the defective part of the first touch electrode 100 can be connected to the first touch electrode 100 in the adjacent touch electrode unit.

[0075] Referring to Figure 7 , an embodiment of the present application further provides a display panel, including a stacked backplane 20, a light-emitting layer 30, a packaging layer 40, and a touch layer 50. The touch layer 50 includes a first touch layer 51, a touch insulating layer 52, and a second touch layer 53; the touch layer 50 defines a touch electrode unit or a touch electrode structure according to the foregoing, and the first touch electrode 100, the second touch electrode 200, and the connection part 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. Among them, the specific structures and principles of the touch electrode unit and the touch electrode structure can be referred to the foregoing embodiments, and will not be elaborated herein.

[0076] As Figure 7 shown, as an example, on both sides of the dotted line are two touch electrode units, and the bridge electrode 210 is used to bridge the second touch electrodes 200 in the two touch electrode units. The touch electrode unit on the right is in a defective state, and a first connection part 140 is provided in the middle of the second touch electrode 200. The first connection part 140 is used to connect the main body part and the defective part 130 of the first touch electrode 100 in one touch electrode unit. The first touch electrode 100, the first connection part 140, and the second touch electrode 200 are arranged on the same layer.

[0077] According to the display panel of the present application, the defective touch patterns divided at the edge can be connected to the touch signal channel, ensuring that the touch patterns accessing the communication signal are sufficient and guaranteeing the touch effect.

[0078] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A touch electrode unit, characterized in that, the touch electrode unit is defined in a defective state, the touch electrode unit includes a first touch electrode and a second touch electrode, the first touch electrode includes a main body portion and a defective portion, and the main body portion and the defective portion are separated by a part of the second touch electrode; wherein, the first touch electrode further includes a first connection portion, the first connection portion, the main body portion, the defective portion and the second touch electrode are arranged in the same layer, the first connection portion is arranged spaced apart from the second touch electrode, and is respectively connected to the main body portion and the defective portion.

2. The touch electrode unit according to claim 1, characterized in that, the first connection portion is arranged in a straight line.

3. The touch electrode unit according to claim 2, characterized in that, the first connection portion penetrates through the part of the second touch electrode that separates the main body portion and the defective portion.

4. The touch electrode unit according to claim 2, characterized in that, the first connection portion is arranged around the end of the part of the second touch electrode that separates the main body portion and the defective portion.

5. The touch electrode unit according to any one of claims 1-4, characterized in that, the first touch electrode includes a plurality of defective portions and a plurality of first connection portions respectively connected to each of the defective portions.

6. The touch electrode unit according to any one of claims 1-4, characterized in that, both the first touch electrode and the second touch electrode are in a grid shape, and the first connection portion includes at least two grid lines.

7. The touch electrode unit according to claim 6, characterized in that, the first connection portion is spaced apart from the part of the second touch electrode that separates the main body portion and the defective portion by at least one grid line.

8. The touch electrode unit according to any one of claims 1-4, characterized in that, the main body portion of the first touch electrode includes an intermediate portion and a peripheral portion, the second touch electrode is arranged around the intermediate portion, and the peripheral portion and the defective portion are arranged around the second touch electrode.

9. A touch electrode structure, characterized in that, it includes a first touch electrode unit, a second touch electrode unit and a second connection portion, the first touch electrode unit includes a first touch electrode and a second touch electrode both in a defective state, the second touch electrode unit includes a first touch electrode and a second touch electrode both in a complete state, the defective first touch electrode of the first touch electrode unit is connected to the complete first touch electrode of the second touch electrode unit, and the second connection portion is arranged to connect the defective second touch electrode of the first touch electrode unit and the complete second touch electrode of the second touch electrode unit.

10. The touch electrode structure according to claim 9, characterized in that, the area of the first touch electrode unit is less than 1 / 2 of the area of the second touch electrode unit.

11. A display panel, characterized in that, It includes a stacked backplane, a light-emitting layer, a packaging layer, and a touch layer. The touch layer includes a first touch layer, a touch insulating layer, and a second touch layer. The touch layer defines a touch electrode unit according to any one of claims 1-8 or a touch electrode structure according to claim 9 or 10. The first touch electrode, the second touch electrode, and the connecting portion of the touch electrode unit or the touch electrode structure are disposed on the second touch layer, and the bridge electrode is disposed on the first touch layer.

12. The display panel according to claim 11, wherein, the edge of the display panel includes the edge of the punched display area and the outer peripheral edge of the display area.

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