Display panel and display device

Abstract

The present application discloses a display panel and a display device, including a substrate, a plurality of light-emitting elements and a touch electrode located on the substrate, the plurality of light-emitting elements including a first light-emitting element, the first light-emitting element including a light-emitting portion and a non-light-emitting portion, wherein the non-light-emitting portion is provided in the first light-emitting element, which is conducive to the complete crystal shape of the light-emitting portion of the first light-emitting element, and the touch electrode includes a plurality of first touch traces, and the first touch traces are located on the surface of the non-light-emitting portion of the first light-emitting element, thereby integrating the touch electrode in the non-light-emitting portion of the first light-emitting element. Compared with the existing display panel with an external touch electrode film layer or a separately prepared additional touch electrode film layer, the space utilization rate of the display panel is greatly improved, which is conducive to the realization of a lightweight and thin design of the display panel.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] In current Micro Light Emitting Diode (Micro LED) display panels, the touch panel (TP) is typically located above the Micro LED, using either an external plug-in method (i.e., a separate touch electrode film layer is made and then attached to the Micro LED display panel) or a separate additional film layer (i.e., a separate touch electrode film layer is made above the Micro LED). However, this method causes the touch electrode to occupy a large space in the display panel, hindering the thin and lightweight design of the display panel. Therefore, how to provide a new touch electrode integration method in the display panel to facilitate the thin and lightweight design of the display panel has become a focus of attention. Summary of the Invention

[0003] To solve the above technical problems, embodiments of the present application provide a display panel and a display device, so as to provide a new touch electrode integration method in the display panel, thereby facilitating a lightweight and thin design of the display panel.

[0004] To achieve the above objectives, the present invention provides the following technical solutions:

[0005] A display panel, comprising:

[0006] substrate;

[0007] A plurality of light-emitting elements are located on the substrate, the plurality of light-emitting elements include a first light-emitting element, the first light-emitting element includes a light-emitting portion and a non-light-emitting portion, and a surface of the non-light-emitting portion is a first surface;

[0008] A touch electrode includes a plurality of first touch traces, and the first touch traces are located on the first surface.

[0009] A display device comprises the above-mentioned display panel.

[0010] Compared with the existing technology, the above technical solution has the following advantages:

[0011] The display panel provided in the embodiment of the present application ensures the integrity of the crystal shape of the light-emitting portion of the first light-emitting element by setting a non-light-emitting portion in the first light-emitting element, and further sets a first touch line on the surface of the non-light-emitting portion of the first light-emitting element, so that the first touch lines set on different first light-emitting elements can be electrically connected in sequence to form a required electrode arrangement of a touch electrode, that is, the touch electrode is integrated in the non-light-emitting portion of the first light-emitting element. Compared with the existing display panel with an external touch electrode film layer or a separately prepared additional touch electrode film layer, the space utilization rate of the display panel is greatly improved, which is conducive to realizing a lightweight and thin design of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0013] Figure 1 A partial top view of a display panel provided in one embodiment of the present application;

[0014] Figure 2 A schematic structural diagram of a first light-emitting element in a display panel provided in one embodiment of the present application;

[0015] Figure 3 A schematic cross-sectional view of a first light-emitting element in a display panel provided in one embodiment of the present application;

[0016] Figure 4 A schematic cross-sectional view of a first light-emitting element in a display panel provided in another embodiment of the present application;

[0017] Figure 5 A schematic cross-sectional view of a first light-emitting element in a display panel provided in yet another embodiment of the present application;

[0018] Figure 6 A schematic cross-sectional view of a first light-emitting element in a display panel provided in yet another embodiment of the present application;

[0019] Figure 7 A schematic cross-sectional view of a first light-emitting element in a display panel provided in yet another embodiment of the present application;

[0020] Figure 8 A schematic cross-sectional view of a first light-emitting element in a display panel provided in yet another embodiment of the present application;

[0021] Figure 9A bottom-view schematic diagram of a portion of a touch electrode corresponding to a display panel provided in one embodiment of the present application;

[0022] Figure 10(a)-Figure 10(d) Schematic bottom view of different first light-emitting elements in the display panel provided by various embodiments of the present application, along a direction away from the substrate;

[0023] Figure 11 A bottom-view schematic diagram of a portion of a display panel corresponding to a touch electrode provided in another embodiment of the present application;

[0024] Figure 12 A schematic cross-sectional view of a first light-emitting element in a display panel provided in yet another embodiment of the present application;

[0025] Figure 13 A schematic cross-sectional view of a first light-emitting element in a display panel provided in yet another embodiment of the present application;

[0026] Figure 14 A schematic cross-sectional view of a first light-emitting element in a display panel provided in yet another embodiment of the present application;

[0027] Figure 15 A schematic cross-sectional view of a first light-emitting element in a display panel provided in yet another embodiment of the present application;

[0028] Figure 16 A schematic cross-sectional view of a first light-emitting element in a display panel provided in yet another embodiment of the present application;

[0029] Figure 17 A schematic structural diagram of a display device provided in one embodiment of the present application.

[0030] Description of the accompanying drawings: 100 is a substrate, 200 is a light-emitting element, 210 is a first light-emitting element, 211 is a light-emitting portion of the first light-emitting element, 212 is a non-light-emitting portion of the first light-emitting element, 300 is a touch electrode, 310 is a first touch trace, 10 is a semiconductor layer of the first light-emitting element, 20 is a first electrode of the first light-emitting element, 30 is a second electrode of the first light-emitting element, 11 is a first semiconductor portion of the first light-emitting element, 12 is a second semiconductor portion of the first light-emitting element, 110 is a driving circuit, 13 is a groove between the first semiconductor portion and the second semiconductor portion, 101 is a first-type semiconductor layer, 102 is an active layer, 103 is a second-type semiconductor layer, 1011 is a first-type semiconductor layer, is the first sub-semiconductor part of the first-type semiconductor layer, 1012 is the second sub-semiconductor part of the first-type semiconductor layer, 104 is a buffer layer, 1041 is the first buffer layer part of the buffer layer, 1042 is the second buffer layer part of the buffer layer, 320 is the second touch line, 111 is the first area (the surface of the first semiconductor part facing the substrate in the first light-emitting element), 112 is the second area (the surface of the second semiconductor part facing the substrate in the first light-emitting element), 330 is the third touch line, 340 is the first connecting line, 350 is the second connecting line, 360 is the third connecting line, 370 is the fourth connecting line, 400 is the blocking layer, 500 is the display device, and 600 is the display panel. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0033] Secondly, this application is described in detail with reference to schematic diagrams. When describing the embodiments of this application, for ease of explanation, cross-sectional views of device structures may be partially enlarged and not to scale. Furthermore, these schematic diagrams are merely illustrative and should not limit the scope of protection of this application. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0034] As described in the background technology section, how to provide a new touch electrode integration method in a display panel to facilitate a lightweight and thin design of the display panel has become a focus of attention.

[0035] In view of this, an embodiment of the present application provides a display panel, Figure 1 A partial top view of a display panel provided in an embodiment of the present application is given, as shown in FIG. Figure 1 As shown, the display panel includes:

[0036] substrate 100;

[0037] A plurality of light emitting elements 200 are located on the substrate, wherein the plurality of light emitting elements include a first light emitting element 210, Figure 2 A schematic structural diagram of the first light emitting element 210 is given, as shown in FIG. Figure 2 As shown, the first light emitting element 210 includes a light emitting portion 211 and a non-light emitting portion 212, and the surface of the non-light emitting portion 212 is a first surface;

[0038] The touch electrode 300 includes a plurality of first touch lines 310, such as Figure 2 As shown, the first touch trace 310 is located on the first surface.

[0039] The inventors have found that in a display panel, each light-emitting element includes a semiconductor layer, an N-electrode and a P-electrode. When manufacturing the light-emitting element, the epitaxial area of ​​the entire film layer or part of the film layer of the semiconductor layer can be expanded so that the overall volume of the light-emitting element is larger than the volume of its light-emitting part. Figure 2 The overall volume of the first light-emitting element is larger than the volume of its light-emitting portion 211 , which is beneficial to the crystal integrity of the semiconductor layer of the light-emitting element, especially the active light-emitting layer in the semiconductor layer.

[0040] The inventors further discovered that after the epitaxial area of ​​the entire film layer or part of the film layer of the semiconductor layer in the light-emitting element is expanded, the other parts of the light-emitting element except its light-emitting part do not contribute to the light emission and can be called the non-light-emitting (Dummy) part. Figure 2 As shown in the non-luminous part 212 of the first light-emitting element, if the traces of the touch electrode can be set on the non-luminous part of the light-emitting element, thereby integrating the touch electrode in the non-luminous part of the light-emitting element, the space utilization of the display panel can be greatly improved, which is conducive to realizing a lightweight and thin design of the display panel.

[0041] Based on the above research, the light-emitting portion 211 of the first light-emitting element 210 in the display panel provided in the embodiment of the present application is expanded to form a non-light-emitting portion 212, thereby ensuring the integrity of the crystal shape of the light-emitting portion of the first light-emitting element. Furthermore, the first touch trace 310 of the touch electrode 300 is provided on the surface of the non-light-emitting portion 212 of the first light-emitting element 210. The surface of the non-light-emitting portion 212 of the first light-emitting element 210 (i.e., the first surface) includes the surface of the non-light-emitting portion 212 of the first light-emitting element 210 facing away from the substrate 100, the surface of the non-light-emitting portion 212 of the first light-emitting element 210 facing the substrate 100, and the side surface of the non-light-emitting portion 212 of the first light-emitting element 210. The present application does not limit the specific location of the first touch trace 310 on the surface of the non-light-emitting portion 212 of the first light-emitting element 210, which depends on the specific situation.

[0042] Combine Figure 1 and Figure 2 It can be seen that since the first touch trace 310 of the touch electrode 300 is located on the surface of the non-luminous part 212 of the first light-emitting element 210, the first touch traces 310 located on the surface of the non-luminous part 212 of the multiple first light-emitting elements 210 can be electrically connected in sequence by setting the arrangement of multiple first light-emitting elements 210 and setting the position and shape of the first touch trace 310 located on the surface of the non-luminous part 212 of the multiple first light-emitting elements 210 to form one touch electrode 300, and then form an arrangement of multiple touch electrodes 300. That is to say, the arrangement of multiple first light-emitting elements 210 can be set according to the required electrode arrangement of one of the touch electrodes 300, and the position and shape of the first touch traces 310 located on the surface of the non-light-emitting part 212 of the multiple first light-emitting elements 210 can be set, so that the first touch traces 310 located on the surface of the non-light-emitting part 212 of the multiple first light-emitting elements 210 are electrically connected in sequence, satisfying the required electrode arrangement of one of the touch electrodes 300, and then satisfying the required electrode arrangement of multiple touch electrodes 300.

[0043] It should be noted that, for one of the touch electrodes 300, for example, Figure 1A diamond-shaped touch electrode in the touch electrode 300, since each first touch line 310 in the touch electrode 300 is respectively located on the surface of the non-light-emitting part 212 of different first light-emitting elements 210, therefore, when multiple first touch lines 310 are electrically connected in sequence to form a touch electrode 300, the first touch lines 310 on the surface of the non-light-emitting part 212 of each first light-emitting element 210 corresponding to the touch electrode 300 can be electrically connected in sequence to form a touch electrode 300 as a whole, or the touch electrode 300 can be divided into multiple sub-touch electrodes, each sub-touch electrode is formed by electrically connecting multiple first touch lines 310 on the surface of the non-light-emitting part 212 of the first light-emitting element 210 in sequence, and then the multiple sub-touch electrodes are electrically connected to form a touch electrode 300.

[0044] It should also be noted that the first touch trace can be a pattern trace of the touch electrode, i.e., used to form the pattern of the touch electrode, or a bridge trace of the touch electrode, i.e., used to electrically connect the pattern traces forming the touch electrode pattern, depending on the specific circumstances. Furthermore, this application does not impose any restrictions on the shape of the first touch trace, which depends on the specific circumstances.

[0045] It should be noted that, in the first light-emitting element, the volume of the non-light-emitting portion 212 can be adjusted according to the design requirements of the first touch line 310, thereby providing more redundancy for the first touch line 310, and the non-light-emitting portion 212 can completely surround the light-emitting portion 211 (e.g., Figure 2 As shown), it may also partially surround the light-emitting portion 211, or it may be located on one side of the light-emitting portion 211. This application does not limit this, and it depends on the specific circumstances.

[0046] It can be seen that the display panel provided in the embodiment of the present application ensures the integrity of the crystal shape of the light-emitting part of the first light-emitting element by setting a non-light-emitting part in the first light-emitting element, and further sets the first touch trace of the touch electrode on the surface of the non-light-emitting part of the first light-emitting element, thereby integrating the touch electrode in the non-light-emitting part of the first light-emitting element. Compared with the existing display panel with an external touch electrode film layer or a separately prepared additional touch electrode film layer, the space utilization rate of the display panel is greatly improved, which is conducive to realizing a lightweight and thin design of the display panel.

[0047] Optionally, in one embodiment of the present application, Figure 1As shown, the multiple light-emitting elements 200 also include a second light-emitting element 220. Within the plane where the display panel is located, the projection of the second light-emitting element 220 and the projection of the touch electrode 300 do not overlap, that is, some of the multiple light-emitting elements 200 are first light-emitting elements 210, and some of the light-emitting elements are second light-emitting elements 220. The first touch trace 310 is set on the surface of the non-light-emitting part 212 of each first light-emitting element 210 to form the touch electrode 300, and each second light-emitting element 220 is not used to form the touch electrode 300 and can only be used for normal light emission. However, the present application does not limit this. In other embodiments of the present application, the multiple light-emitting elements 200 can also all serve as the first light-emitting elements 210, that is, the first touch wiring 310 is set on the surface of the non-light-emitting part of each light-emitting element, so that according to the required electrode arrangement of the touch electrode 300, the first touch wiring 310 set on the surface of the non-light-emitting part of different light-emitting elements are electrically connected in sequence to form a required electrode arrangement of the touch electrode 300, and then form a required electrode arrangement of multiple touch electrodes 300.

[0048] It should be noted that the first light emitting element may be any one of a face-up structure, a vertical structure and an inverted structure, which will be described in detail below in different cases.

[0049] Optionally, in one embodiment of the present application, Figure 3 As shown, the first light emitting element 210 includes a semiconductor layer 10, a first electrode 20 and a second electrode 30, the semiconductor layer 10 includes a first semiconductor portion 11 and a second semiconductor portion 12, and the light emitting portion 211 includes the first semiconductor portion 11, the first electrode 20 and the second electrode 30;

[0050] The substrate 100 includes a driving circuit, which is used to drive the light-emitting element to emit light;

[0051] The first electrode 20 is located on a side of the first semiconductor portion 11 facing the substrate 100 , and the second electrode 30 is located on a side of the first semiconductor portion 11 facing away from the substrate 100 .

[0052] It can be seen that in this embodiment, the first light-emitting element 210 is a vertical structure, the side of the first light-emitting element facing away from the substrate 100 is the light-emitting surface, the side of the first light-emitting element facing the substrate 100 is the backlight surface, the first electrode 20 is located on the backlight surface of the first light-emitting element, and the second electrode 30 is located on the light-emitting surface of the first light-emitting element.

[0053] Optionally, in another embodiment of the present application, as Figure 4As shown, the first light emitting element 210 includes a semiconductor layer 10, a first electrode 20 and a second electrode 30, the semiconductor layer 10 includes a first semiconductor portion 11 and a second semiconductor portion 12, and the light emitting portion 211 includes the first semiconductor portion 11, the first electrode 20 and the second electrode 30;

[0054] The display panel further includes a driving circuit 110, which is located on a side of the light-emitting element away from the substrate 100 and is used to drive the light-emitting element to emit light;

[0055] The first electrode 20 and the second electrode 30 are located on a side of the first semiconductor portion 11 facing the substrate 100 .

[0056] It can be seen that in this embodiment, the first light-emitting element 210 is a front-mounted structure, the first electrode 20 and the second electrode 30 are located on the same side of the first light-emitting element, the side of the first light-emitting element close to the substrate 100 is the light-emitting surface, and the side of the first light-emitting element away from the substrate 100 is the backlight surface. At this time, the light emitted by the first light-emitting element is emitted through the transparent substrate 100, and the first electrode 20 and the second electrode 30 are both located on the light-emitting surface of the first light-emitting element.

[0057] Optionally, in another embodiment of the present application, as Figure 5 As shown, the first light emitting element 210 includes a semiconductor layer 10, a first electrode 20 and a second electrode 30, the semiconductor layer 10 includes a first semiconductor portion 11 and a second semiconductor portion 12, and the light emitting portion 211 includes the first semiconductor portion 11, the first electrode 20 and the second electrode 30;

[0058] The substrate 100 includes a driving circuit, which is used to drive the light-emitting element to emit light;

[0059] The first electrode 20 and the second electrode 30 are located on a side of the first semiconductor portion 11 facing the substrate 100 .

[0060] It can be seen that in this embodiment, the first light-emitting element 210 is a flip-chip structure, the first electrode 20 and the second electrode 30 are located on the same side of the first light-emitting element, the side of the first light-emitting element facing away from the substrate 100 is the light-emitting surface, and the side of the first light-emitting element facing the substrate 100 is the backlight surface, and the first electrode 20 and the second electrode 30 are both located on the backlight surface of the first light-emitting element.

[0061] It should be noted that, since the surface of the non-luminous part 212 of the first light-emitting element 210 (i.e., the first surface) can be the surface of the non-luminous part 212 of the first light-emitting element 210 facing away from the substrate 100, or the surface of the non-luminous part 212 of the first light-emitting element 210 facing the substrate 100, or the side of the non-luminous part 212 of the first light-emitting element 210, therefore, no matter whether the first light-emitting element 210 is a face-up structure, a vertical structure, or an inverted structure, the first touch trace 310 can be located on the surface of the non-luminous part 212 of the first light-emitting element 210 facing the substrate 100, or on the surface of the non-luminous part 212 of the first light-emitting element 210 facing away from the substrate 100, or on the side of the non-luminous part 212 of the first light-emitting element 210. This application does not limit this, and the specific situation depends on the circumstances.

[0062] Compared with the light-emitting elements with upright structure and vertical structure, the light-emitting elements with flip-chip structure can be smaller in size, so that they can be integrated with high density in the display panel. The following description will continue with the example of the first light-emitting element with flip-chip structure.

[0063] Optionally, in one embodiment of the present application, Figure 5 As shown, the non-light-emitting portion 212 includes the second semiconductor portion 12, and the first touch trace 310 is located on the side of the second semiconductor portion 12 facing the substrate 100, that is, the first touch trace 310 is located on the backlight surface of the first light-emitting element;

[0064] The first touch wiring 310 , the first electrode 20 , and the second electrode 30 are insulated from each other.

[0065] In other embodiments of the present application, the first touch trace 310 may also be located on a side of the second semiconductor portion 12 facing away from the substrate 100 , or may be located on a sidewall of the second semiconductor portion 12 , depending on the specific circumstances.

[0066] It should be noted that, for one of the first light-emitting elements 210, in order to prevent the first touch trace 310 located on the surface of the non-light-emitting portion 212 from affecting the normal operation of the light-emitting portion 211, therefore, optionally, in one embodiment of the present application, as Figure 6As shown, along the direction parallel to the plane where the display panel is located, a groove 13 is included between the first semiconductor part 11 and the second semiconductor part 12, and the groove 13 at least partially penetrates the semiconductor layer 10 in the direction perpendicular to the plane where the display panel is located. The insulating medium covers the groove 13, thereby isolating the first touch wiring 310 from the first semiconductor part 11, thereby preventing the first touch wiring 310 from affecting the normal light emission of the first semiconductor part 11.

[0067] The following describes the specific position and function of the groove by taking the first light-emitting element as an example of a flip-chip structure.

[0068] Specifically, in one embodiment of the present application, continue as follows Figure 6 As shown, the semiconductor layer 10 includes a first-type semiconductor layer 101, an active layer 102, and a second-type semiconductor layer 103 arranged in sequence in a direction away from the substrate 100. The first-type semiconductor layer 101 includes a first sub-semiconductor portion 1011 and a second sub-semiconductor portion 1012. The first semiconductor portion 11 includes the first sub-semiconductor portion 1011, the active layer 102, and the second-type semiconductor layer 103. The second semiconductor portion 12 includes the second sub-semiconductor portion 1012. The first electrode 20 is located on the side of the second-type semiconductor layer 103 facing the substrate 100, and the second electrode 30 is located on the side of the first sub-semiconductor portion 1011 facing the substrate 100. Figure 6 It can be seen that at this time, if the first touch wiring 310 is located on the side of the second sub-semiconductor part 1012 facing the substrate 100, then since the first sub-semiconductor part 1011 and the second sub-semiconductor part 1012 are connected to each other, the first touch wiring 310 may affect the current of the first sub-semiconductor part 1011, and then affect the current of the first semiconductor part 11. Therefore, in this embodiment, the groove 13 is set between the first sub-semiconductor part 1011 and the second sub-semiconductor part 1012, and the groove 13 is covered with an insulating medium, so that the first sub-semiconductor part 1011 and the second sub-semiconductor part 1012 are isolated from each other, thereby avoiding the first touch wiring 310 affecting the normal luminescence of the first semiconductor part 11.

[0069] It should be noted that, since the current in the first-type semiconductor layer 101 flows parallel to the surface of the substrate 100, that is, it is a lateral current, the groove 13 can completely penetrate the first-type semiconductor layer 101, or can partially penetrate the first-type semiconductor layer 101, such as Figure 6As shown, when the groove 13 partially penetrates the first-type semiconductor layer 101, it needs to be able to at least block the lateral current in the first-type semiconductor layer 101. When the groove 13 partially penetrates the first-type semiconductor layer 101, the first semiconductor portion 11 and the second semiconductor portion 12 are connected as an integral structure.

[0070] In another embodiment of the present application, Figure 7 As shown, the semiconductor layer 10 includes a first-type semiconductor layer 101, an active layer 102, and a second-type semiconductor layer 103 arranged in sequence in a direction away from the substrate 100. The first semiconductor portion 11 and the second semiconductor portion 12 each include a portion of the first-type semiconductor layer 101, a portion of the active layer 102, and a portion of the second-type semiconductor layer 103. The first electrode 20 is located on the side of the second-type semiconductor 103 facing the substrate 100, and the second electrode 30 is located on the side of the first-type semiconductor layer 101 facing the substrate 100. Figure 7 It can be seen that at this time, if the first touch electrode wiring 310 is located on the side of the second-type semiconductor layer 103 facing the substrate 100, then since the second-type semiconductor layer 103, the active layer 102 and the first-type semiconductor layer 101 are interconnected in the first semiconductor part 11 and the second semiconductor part 12, the first touch wiring 310 will affect the current of the first semiconductor part 11. Therefore, the groove 13 is set between the first semiconductor part 11 and the second semiconductor part 12, and the groove 13 is covered with an insulating medium, so that the first semiconductor part 11 and the second semiconductor part 12 are isolated from each other, thereby preventing the first touch wiring 310 from affecting the normal luminescence of the first semiconductor part 11.

[0071] It should be noted that, since the second-type semiconductor layer 103, the active layer 102 and the first-type semiconductor layer 101 are interconnected in the first semiconductor portion 11 and the second semiconductor portion 12, the groove 13 needs to completely penetrate the second-type semiconductor layer 102 and the active layer 102, and at least partially penetrate the first-type semiconductor layer 101. Figure 7 This is a case where the grooves 13 completely penetrate the second-type semiconductor layer 102 , the active layer 102 and the first-type semiconductor layer 101 .

[0072] In another embodiment of the present application, Figure 8As shown, the semiconductor layer 10 includes a buffer layer 104, a first-type semiconductor layer 101, an active layer 102, and a second-type semiconductor layer 103 arranged in sequence along a direction away from the substrate 100. The buffer layer 104 includes a first buffer layer portion 1041 and a second buffer layer portion 1042. The first semiconductor portion 11 includes the first buffer layer portion 1041, the first-type semiconductor layer 101, the active layer 102, and the second-type semiconductor layer 103. The second semiconductor portion 12 includes the second buffer layer portion 1042. The first electrode 20 is located on the side of the second-type semiconductor layer 103 facing the substrate 100, and the second electrode 30 is located on the side of the first-type semiconductor layer 101 facing the substrate 100. Figure 8 It can be seen that at this time, if the first touch trace 310 is located on the side of the second buffer layer portion 1042 facing the substrate 100, then, since the buffer layer 104 does not affect the current of the first semiconductor portion 11, the groove 13 (such as Figure 8 As shown), the groove 13 is covered with an insulating medium, so that the first semiconductor portion 11 and the second semiconductor portion 12 are isolated from each other. The groove 13 may also not be provided, depending on the specific situation.

[0073] In the above embodiments, optionally, the first-type semiconductor layer 101 is an N-type semiconductor layer, the second-type semiconductor layer 102 is a P-type semiconductor layer, the first electrode 20 is a P-electrode, and the second electrode 30 is an N-electrode.

[0074] As previously mentioned, since each first light-emitting element is a separate element, the first touch traces on multiple first light-emitting elements need to be electrically connected in sequence to form a single touch electrode, thereby forming an arrangement of multiple touch electrodes. The following, taking the example of a flip-chip structure of the first light-emitting element with the first touch trace located on the side of the second semiconductor portion of the first light-emitting element facing the substrate, specifically describes how to electrically connect the first touch traces on multiple first light-emitting elements to form a single touch electrode.

[0075] Optionally, in one embodiment of the present application, Figure 9 As shown, the touch electrode 300 further includes a plurality of second touch traces 320 , and the second touch traces 320 are located on the surface of the substrate 100 facing the light emitting element 200 ;

[0076] In one of the touch electrodes 300 , the first touch lines 310 and the second touch lines 320 are electrically connected alternately in sequence, that is, the first touch lines 310 on multiple first light-emitting elements are electrically connected in sequence through the second touch lines 320 located on the substrate 100 to form one of the touch electrodes 300 .

[0077] In this embodiment, combined with Figure 1 and Figure 9 It can be seen that the first touch wiring 310 is located on the side of the first light-emitting element 210 facing the substrate 100, and the second touch wiring 320 is located on the surface of the substrate 100 facing the light-emitting element 200, that is, located on the surface of the substrate 100 facing the first light-emitting element 210. Therefore, in the display panel provided by this embodiment, the touch electrode 300 is arranged between the substrate 100 and the first light-emitting element 210. Compared with the existing display panel that is formed by pasting a touch electrode film layer (i.e., externally mounted) or separately preparing a touch electrode film layer above the light-emitting element, the space utilization of the display panel is greatly improved. Therefore, the display panel can be lighter and thinner.

[0078] As known above, the first touch trace 310 on the first light emitting element 210 can be a pattern trace of the touch electrode 300 or a bridge trace of the touch electrode 300 , which will be described in detail below.

[0079] Optionally, in one embodiment of the present application, Figure 9 As shown, for one of the touch electrodes 300, the projection pattern of each of the first touch lines 310 in the touch electrode on the surface of the substrate 100 is the same as the pattern of the touch electrode 300, that is, in one of the touch electrodes 300, each of the first touch lines 310 in the touch electrode is sequentially connected by a bridge through the second touch lines 320, that is, in one of the touch electrodes 300, each of the first touch lines 310 in the touch electrode is a graphic line, located on the side of the second semiconductor portion 212 of the plurality of first light-emitting elements 210 facing the substrate 100, and each of the second touch lines 320 is a bridge line, located on the surface of the substrate 100 facing the first light-emitting element 210.

[0080] Since the pattern of a touch electrode 300 may exist in various forms, in a touch electrode 300, when each of the first touch lines 310 is electrically connected in sequence through the second touch lines 320 to form the pattern of the touch electrode, the shape of each of the first touch lines 310 needs to be designed based on the pattern of the touch electrode. Figure 10(a)-Figure 10(d) Given Figure 5 The first light emitting element is shown in a direction away from the substrate ( Figure 5 Schematic diagram of the upward view of the light direction, such as Figure 10(a)-Figure 10(d) As shown, the surface of the first semiconductor portion 11 in the first light-emitting element facing the substrate 100 is set as the first region 111, and the surface of the second semiconductor portion 12 in the first light-emitting element facing the substrate 100 is set as the second region 112. If the second semiconductor portion 12 surrounds the first semiconductor portion 11, then the second region 112 surrounds the first region 111. At this time, the shape of the first touch trace 310 can be designed within the second region 112.

[0081] Figure 10(a)-Figure 10(d) Several shape designs of the first touch trace 310 are listed. Specifically, FIG. 10( a ) shows a case where 1 / 4 of the first touch trace surrounds the first area 111 , wherein the first touch trace 310 is L-shaped. Figure 10(b)-Figure 10(c) FIG10(d) shows a case where the first touch line half surrounds the first area 111, wherein the first touch line 310 is U-shaped. FIG10(d) shows a case where the first touch line fully surrounds the first area 111, wherein the first touch line 310 is U-shaped. However, the shape of the first touch line 310 in this application is not limited to Figure 10(a)-Figure 10(d) The several types listed can be designed according to the electrode pattern required by the touch electrode 300. For example, the first touch line 310 can also be located on one side of the first area 111, such as a long strip. The first touch line 310 can also surround the first area 111 in other proportions except 1 / 2 and 1 / 4, depending on the specific situation.

[0082] Considering that in one of the touch electrodes 300, the shapes of the first touch lines 310 may be different or the same, but in order to form the electrode pattern required by the touch electrode 300, more than one shape of the first touch line 310 is needed. Therefore, optionally, in one embodiment of the present application, the display panel includes a first light-emitting unit and a second light-emitting unit, and the relative position of the first touch line corresponding to the first light-emitting unit and the first light-emitting unit is different from the relative position of the first touch line corresponding to the second light-emitting unit and the second light-emitting unit, and the first touch line corresponding to the first light-emitting unit is electrically connected to the first touch line corresponding to the second light-emitting unit through the second touch line.

[0083] It should be noted that the relative position of the first touch trace 310 corresponding to a light-emitting unit and the light-emitting unit specifically refers to the area on the surface of the second semiconductor portion 12 of the light-emitting unit where the first touch trace 310 corresponding to the light-emitting unit is located. More specifically, when the first touch trace 310 is located on the side of the second semiconductor portion 12 of the light-emitting unit facing the substrate 100, the relative position of the first touch trace 310 and the light-emitting unit refers to the area on which the first touch trace 310 is located on the surface of the second semiconductor portion 12 of the light-emitting unit facing the substrate 100 (i.e., the second area 112). In other words, the relative position of the first touch trace 310 and the light-emitting unit refers to the relative position of the first touch trace 310 and the surface of the first semiconductor portion 11 of the light-emitting unit facing the substrate 100 (i.e., the first area 111). Figure 10(a)-Figure 10(d) The relative positions of 1 / 4 encirclement, half encirclement and full encirclement are listed.

[0084] Specifically, Figure 9 A bottom view of a portion of the display panel corresponding to a touch electrode is provided, wherein the surface of the first semiconductor portion 11 of each first light-emitting element 210 facing the substrate 100 is a first region 111, and the surface of the second semiconductor portion 12 of each first light-emitting element 210 facing the substrate 100 is a second region 112. Figure 9 As can be seen in the figure, the second regions 112 of the light-emitting units A1, A2, B1, B2, B3, B4, C1, and C2 are all provided with the first touch traces 310. It should be noted that the first touch traces 310 can be provided in the second region 112 of the light-emitting unit D. In this case, the first touch traces 310 on the light-emitting unit D may or may not be electrically connected to the first touch traces 310 of other light-emitting units. The first touch traces 310 may not be provided in the second region 112 of the light-emitting unit D. However, in actual applications, when the light-emitting elements are transferred to the display panel, the light-emitting elements corresponding to a touch electrode region are generally provided with the first touch traces 310.

[0085] For the convenience of description, Figure 9 The horizontal direction is set as the first direction, and the vertical direction is set as the second direction. Figure 9 The light emitting units are arranged in an array along a first direction and a second direction perpendicular to each other, and the first direction and the second direction are both parallel to the plane where the display panel is located.

[0086] For the light-emitting units A1 and A2, the first touch routing 310 is semi-enclosed in the first area 111, and the relative position of the first touch routing 310 corresponding to the light-emitting unit A1 and the relative position of the first touch routing 310 corresponding to the light-emitting unit A2 and the light-emitting unit A2 are symmetrical along the second direction, that is, the first touch routing 310 corresponding to the light-emitting unit A1 can be obtained by flipping 180° with the second direction as the axis to obtain the first touch routing 310 corresponding to the light-emitting unit A2. Therefore, the relative position of the first touch routing 310 corresponding to the light-emitting unit A1 and the light-emitting unit A1, and the relative position of the first touch routing 310 corresponding to the light-emitting unit A2 and the light-emitting unit A2 can be recorded as the first type of relative positions.

[0087] For the light-emitting units C1 and C2, the first touch trace 310 is also semi-enclosed in the first area 111, and the relative position of the first touch trace 310 corresponding to the light-emitting unit C1 and the relative position of the first touch trace 310 corresponding to the light-emitting unit C2 and the light-emitting unit C2 are symmetrical along the first direction, that is, the first touch trace 310 corresponding to the light-emitting unit C1 can be obtained by flipping 180° with the first direction as the axis to obtain the first touch trace 310 corresponding to the light-emitting unit C2. Therefore, the relative position of the first touch trace 310 corresponding to the light-emitting unit C1 and the light-emitting unit C1, and the relative position of the first touch trace 310 corresponding to the light-emitting unit C2 and the light-emitting unit C2 can be recorded as the second type of relative positions.

[0088] For the light-emitting units B1, B2, B3, and B4, 1 / 4 of the first touch trace 310 is surrounded by the first area 111, and the first touch trace 310 on one of the light-emitting units is flipped 180° about the first direction and / or flipped 180° about the second direction to obtain the first touch trace 310 on any other light-emitting unit. Therefore, the relative positions of the first touch traces corresponding to the light-emitting units B1, B2, B3, and B4 and their respective light-emitting units can be recorded as the third type of relative positions.

[0089] It can be seen that in order to form a required pattern of the touch electrode 300, it may not only require the first touch traces 310 of the first type of relative position like the light-emitting units A1 and A2, but also the first touch traces 310 of the second type of relative position like the light-emitting units C1 and C2, and the first touch traces 310 of the third type of relative position like the light-emitting units B1, B2, B3 and B4. Even for the first touch traces 310 of the same type of relative position, such as the light-emitting units A1 and A2, the relative positions of the first touch traces 310 and the corresponding light-emitting units may not be exactly the same. Therefore, in one of the touch electrodes 300, the relative position of the first touch trace 310 corresponding to the first light-emitting unit and the first light-emitting unit is different from the relative position of the first touch trace 310 corresponding to the second light-emitting unit and the second light-emitting unit. The first touch trace 310 corresponding to the first light-emitting unit is electrically connected to the first touch trace 310 corresponding to the second light-emitting unit through the second touch trace 320. Specifically, in Figure 9 In the lower left corner of the substrate 100, the first touch wiring 310 on the light-emitting unit B1 is electrically connected to the first touch wiring 310 on the light-emitting unit A1 through one of the second touch wirings 320, and is electrically connected to the first touch wiring 310 on the light-emitting unit C1 through another of the second touch wirings 30. Similarly, the first touch wirings 310 on multiple light-emitting units are electrically connected in turn through the second touch wirings 320 located on the substrate 100 to form one touch electrode 300.

[0090] Optionally, in one embodiment of the present application, the plurality of second touch traces 320 include a plurality of second touch trace groups, and each second touch trace 320 in each second touch trace group is evenly distributed around one first light-emitting element 210, and each second touch trace 320 spans two first light-emitting elements 210. For example, Figure 9 As shown, a second touch trace 320 is provided at the center of each of the four sides of each first light-emitting element 210, and each second touch trace 320 spans two first light-emitting elements 210, so that the first touch trace 310 on any first light-emitting element 210 can be connected to the first touch trace 310 on another first light-emitting element 210 through a second touch trace 320 around it, thereby forming a required pattern of the touch electrode.

[0091] It should be noted that, in the prior art, when transferring the light-emitting element to the display panel, it is necessary to align the electrode of the light-emitting element and the electrode pad on the substrate. When preparing the touch electrode on the display panel, it is also necessary to separately align the relative positions of the touch electrode routing and the light-emitting element, that is, the touch electrode routing needs to avoid the position of the light-emitting element, which places high requirements on the accuracy of the touch electrode routing. In this embodiment, since the second touch routing 320 located on the surface of the substrate 100 is indiscriminately distributed around each of the first light-emitting elements 210, and the relative positions of the first touch routing 310 as the touch electrode graphic routing and the first light-emitting element 210 have been determined, there is no need to separately align the relative positions of the touch electrode routing and the light-emitting element. Therefore, when aligning the electrodes of the light-emitting element and the electrode pads on the substrate, it is only necessary to select the first light-emitting element 210 with the first touch wiring 310 set at a suitable relative position (such as the three types of relative positions mentioned above), and the first touch wiring 310 on different first light-emitting elements 210 can be electrically connected in sequence through the second touch wiring 320 located on the substrate. At the same time, the relative position alignment of the touch electrode wiring and the light-emitting element can be achieved. The relative position alignment of the touch electrode wiring and the light-emitting element can be completed while the alignment of the electrodes of the light-emitting element and the electrode pads on the substrate is achieved, thereby forming the required touch electrode arrangement without the need for an additional alignment process of the relative positions of the touch electrode wiring and the light-emitting element.

[0092] Optionally, in another embodiment of the present application, as Figure 11 As shown, for one of the touch electrodes 300, the projection pattern of each of the second touch lines 320 in the touch electrode 300 on the surface of the substrate 100 is the same as the pattern of the touch electrode 300, that is, in one of the touch electrodes 300, each of the second touch lines 320 in the touch electrode is sequentially connected by a bridge through the first touch line 310, that is, in one of the touch electrodes 300, each of the second touch lines 320 in the touch electrode is a graphic line, located on the surface of the substrate 100 facing the first light-emitting element 210, and each of the first touch lines 310 is a bridge line, located on the side of the second semiconductor portion 212 of each of the first light-emitting elements 210 facing the substrate 100.

[0093] It should be noted that, since each of the first light-emitting elements 210 is a separate element, when the first touch line 310 is used as a bridge line to electrically connect two of the second touch lines 320, one of the first touch lines 310 can only be set within the second area 112 of one of the first light-emitting elements 210, that is, one of the first touch lines 310 will not cross two of the first light-emitting elements 210. Figure 11 As shown, Figure 9 The positions of the pattern traces in FIG are slightly different. The second touch trace 320 located on the surface of the substrate 100 facing the first light-emitting element 210 needs to cross two first light-emitting elements 210. Furthermore, since the second touch trace 320 is located on the surface of the substrate 100, the shape of the second touch trace 320 is also relatively easy to adjust.

[0094] Optionally, in one embodiment of the present application, the plurality of first touch traces 320 include a plurality of first touch trace groups, and the first touch traces 320 in each first touch trace group are evenly distributed around the surface of the first semiconductor portion 11 of the first light-emitting element 210 facing the substrate 100 (i.e., the first region 111). For example, Figure 11 As shown, a first touch trace 310 is provided around the first area 111 of each first light-emitting element 210, that is, at the center of the four sides of the second area of ​​each first light-emitting element 210, so that the second touch traces 320 located in various directions on the surface of the substrate 100 can be connected to another second touch trace 320 through the first touch trace 310 across the bridge to form a required pattern of the touch electrode.

[0095] It should be noted that, since the first touch line 310 located in the second area 112 of the first light-emitting element 210 serves as a bridge line for the touch electrode, the first touch line 310 located in the second area 112 of the first light-emitting element 210 can be one or more, as long as the different second touch lines located on the surface of the substrate 100 facing the first light-emitting element 210 can be electrically connected through the first touch line.

[0096] Optionally, in another embodiment of the present application, for one of the touch electrodes 300, the common projection pattern of part of the first touch lines 310 and part of the second touch lines 320 in the touch electrode on the surface of the substrate 100 is the same as the pattern of the touch electrode, that is, in one of the touch electrodes 300, part of the first touch lines 310 and part of the second touch lines 320 are pattern lines, and another part of the first touch lines 310 and another part of the second touch lines 320 are bridge lines. Specifically, Figure 9 and Figure 11 Combined, a partial schematic diagram of the touch electrode routing in this embodiment can be obtained, which will not be described in detail here.

[0097] It should be noted that, in the above embodiments, regardless of whether the first touch trace 310 is used as a pattern trace of the touch electrode 300 or as a bridge trace of the touch electrode 300, in order to facilitate better formation of the pattern or bridge connection of the touch electrode, optionally, in one embodiment of the present application, the first touch trace 310 partially surrounds the surface of the first semiconductor portion 11 facing the substrate 100 (i.e., the first region 111), such as Figure 10(a)-Figure 10(c) As shown in the example, it can be seen that at this time, the first touch trace 310 is not a closed figure.

[0098] It should also be noted that, in the above embodiments, the first touch trace 310 is located on the backlight surface of the first light-emitting element 210, that is, on the backlight surface of the display panel. In actual applications, fingers or touch devices touch the light-emitting surface of the display panel. Then, if the first touch trace 310 of the touch electrode is set on the backlight surface of the display panel, the sensing may be insufficient. Therefore, optionally, in one embodiment of the present application, Figure 12 As shown, the touch electrode 300 also includes a third touch wiring 330, which is located on the side of the second semiconductor part 12 away from the substrate 100, that is, the third touch wiring 330 is closer to the light-emitting surface of the display panel than the first touch wiring 310; and, in one of the touch electrodes, the first touch wiring 310 and the third touch wiring 330 are electrically connected.

[0099] It can be seen that in this embodiment, by arranging the third touch wiring 330 on the side of the second semiconductor part 12 away from the substrate 100, that is, closer to the light-emitting surface of the display panel, the third touch wiring 330 can serve as the antenna of the touch electrode 300, which is more sensitive to the touch of the finger or the touch device on the light-emitting surface of the display panel, thereby improving the sensing sensitivity of the touch electrode.

[0100] It should be noted that the reference Figure 10(a)-Figure 10(d) The shape design of the first touch trace 310 is listed above, and the shape of the third touch trace 330 can also be L-shaped, U-shaped, or a U-shaped shape.

[0101] It should also be noted that the present application does not limit the form of electrical connection between the first touch trace 310 and the third touch trace 330 in one touch electrode 300 , which will be described in detail below.

[0102] Optionally, in one embodiment of the present application, Figure 13As shown, the touch electrode 300 further includes a first connecting wire 340 , and the first connecting wire 340 is located on the sidewall of the second semiconductor portion 12 ;

[0103] In one of the touch electrodes 300 , the first touch trace 310 is electrically connected to the third touch trace 330 through the first connecting trace 340 .

[0104] Optionally, in another embodiment of the present application, as Figure 14 As shown, the touch electrode 300 further includes a second connecting wire 350;

[0105] A first through hole is provided in the second semiconductor portion 12 , the first through hole passes through the second semiconductor portion 12 , and the second connecting trace 350 is filled in the first through hole;

[0106] In one of the touch electrodes 300 , the first touch trace 310 is electrically connected to the third touch trace 330 through the second connection trace 350 .

[0107] Optionally, in another embodiment of the present application, as Figure 15 As shown, the touch electrode further includes a third connecting wire 360 ​​and a fourth connecting wire 370;

[0108] At least one third connecting trace 360 ​​is arranged in sequence in a direction away from the substrate 100 in the second semiconductor part 12, and the extension direction of the third connecting trace is parallel to the surface of the substrate 100. At least two second through holes are also provided in the second semiconductor part 12, and the second through holes partially pass through the second semiconductor part 12. The second through holes are filled with the fourth connecting trace 370, and the fourth connecting trace 360 ​​and the third connecting trace 370 are electrically connected alternately in sequence. It should be noted that the second semiconductor part 12 can be a multi-layer semiconductor structure, and the third connecting trace can be located between adjacent semiconductor layers.

[0109] In one of the touch electrodes 300 , the first touch trace 310 is electrically connected to the third touch trace 330 through the fourth connection trace 370 and the third connection trace 360 ​​that are alternately electrically connected in sequence.

[0110] It should be noted that in any of the above embodiments, each trace in the touch electrode, including the first touch trace 310, the second touch trace 320, the third touch trace 330, the first connecting trace 340, the second connecting trace 350, the third connecting trace 360 ​​and the fourth connecting trace 370, can be a metal trace or a transparent oxide trace, such as an indium tin oxide ITO trace, depending on the specific situation. However, the metal trace has a lower conductivity than the transparent oxide trace, and the touch sensing is more sensitive.

[0111] Since the third touch line 330 is located on the side of the second semiconductor portion 12 away from the substrate 100, that is, on the light-emitting surface of the first light-emitting element, when the third touch line 330 is a metal line, it may reflect the light incident from the outside of the display panel, affecting the display effect of the display panel. Therefore, when the third touch line 330 is a metal line, if Figure 16 As shown, the display panel also includes a blocking layer 400. Specifically, the blocking layer 400 can be a black matrix (BM) or a black ink layer. In the plane where the display panel is located, the projection of the blocking layer 400 covers the projection of the third touch line 330, so that the blocking layer 400 is used to block the third touch line, preventing the external light incident on the display panel from reaching the third touch line 300, so that the display panel maintains a good display effect.

[0112] Of course, in other embodiments of the present application, the third touch line 330 can also be set as a transparent oxide line, so that there is no need to use the shielding layer 400 to shield the third touch line 330. At this time, the first touch line 310 can preferably be a metal line, but can also be a transparent oxide line, depending on the specific situation.

[0113] The present application also provides a display device, such as Figure 17 As shown, the display device 400 includes any of the display panels 500 described above. Since the specific structure of the display panel has been described in detail in the previous embodiments, it will not be repeated here. The display device 400 can be any electronic device with a display function, such as a touch screen display, a mobile phone, a tablet computer, a laptop computer, an e-reader, or a television.

[0114] In summary, the display panel and display device provided by the embodiments of the present application ensure the integrity of the crystal shape of the light-emitting portion of the first light-emitting element by providing a non-light-emitting portion in the first light-emitting element. Furthermore, a first touch trace is provided on the surface of the non-light-emitting portion of the first light-emitting element, thereby enabling the first touch traces provided on different first light-emitting elements to be sequentially electrically connected. Specifically, the first touch traces provided on different first light-emitting elements can be sequentially electrically connected via a second touch trace located on the surface of the substrate facing the first light-emitting element, thereby forming a desired electrode arrangement for the touch electrodes, i.e., integrating the touch electrodes into the non-light-emitting portion of the first light-emitting element. Compared to existing display panels with external touch electrode films or separately prepared additional touch electrode films, the display panel significantly improves space utilization, facilitating a lightweight and thin design of the display panel. Furthermore, when the first touch trace is located on the backlight surface of the light-emitting element, a third touch trace can be provided on the light-emitting surface of the light-emitting element and electrically connected to the first touch trace, so that the third touch trace can serve as an antenna for the touch electrode, making the display panel more sensitive to touch.

[0115] The various parts in this manual are described in a combination of parallel and progressive manners. Each part focuses on the differences from other parts, and the same or similar parts between the various parts can be referenced to each other.

[0116] With respect to the above description of the disclosed embodiments, the features described in the various embodiments in this specification may be interchanged or combined with one another to enable those skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A display panel, characterized in that: include: substrate; A plurality of light-emitting elements are located on the substrate, the plurality of light-emitting elements include a first light-emitting element, the first light-emitting element includes a light-emitting portion and a non-light-emitting portion, and a surface of the non-light-emitting portion is a first surface; The first light-emitting element includes a semiconductor layer, a first electrode, and a second electrode; the semiconductor layer includes a first semiconductor portion and a second semiconductor portion; the light-emitting portion includes the first semiconductor portion, the first electrode, and the second electrode; the non-light-emitting portion includes the second semiconductor portion, and the first surface is a surface of the second semiconductor portion; A touch electrode includes a plurality of first touch traces, and the first touch traces are located on the first surface.

2. The display panel according to claim 1, wherein: The substrate includes a driving circuit, and the driving circuit is used to drive the light-emitting element to emit light; The first electrode and the second electrode are located on a side of the first semiconductor portion facing the substrate.

3. The display panel according to claim 2, wherein: The first touch trace is located on a side of the second semiconductor portion facing the substrate; The first touch wiring, the first electrode and the second electrode are insulated from each other.

4. The display panel according to claim 3, wherein: A groove is formed between the first semiconductor portion and the second semiconductor portion in a direction parallel to the plane of the display panel. The groove at least partially penetrates the semiconductor layer in a direction perpendicular to the plane of the display panel, and the groove is covered by an insulating medium.

5. The display panel according to claim 3, wherein: The touch electrode further includes a plurality of second touch traces, and the second touch traces are located on a surface of the substrate facing the light-emitting element; In one of the touch electrodes, the first touch wiring and the second touch wiring are electrically connected alternately in sequence.

6. The display panel according to claim 5, wherein: For one of the touch electrodes, a projection pattern of each of the first touch lines in the touch electrode on the surface of the substrate is the same as a pattern of the touch electrode.

7. The display panel according to claim 6, wherein: The display panel includes a first light-emitting unit and a second light-emitting unit. The relative position of the first touch line corresponding to the first light-emitting unit and the first light-emitting unit is different from the relative position of the first touch line corresponding to the second light-emitting unit and the second light-emitting unit. The first touch line corresponding to the first light-emitting unit is electrically connected to the first touch line corresponding to the second light-emitting unit through the second touch line.

8. The display panel according to claim 5, wherein: For one of the touch electrodes, a projection pattern of each of the second touch lines in the touch electrode on the surface of the substrate is the same as a pattern of the touch electrode.

9. The display panel according to claim 5, wherein: For one of the touch electrodes, a common projection pattern of a portion of the first touch lines and a portion of the second touch lines in the touch electrode on the surface of the substrate is the same as a pattern of the touch electrode.

10. The display panel according to claim 5, wherein: The first touch trace portion surrounds a surface of the first semiconductor portion facing the substrate.

11. The display panel according to claim 3, wherein The touch electrode further includes a third touch trace, and the third touch trace is located on a side of the second semiconductor portion facing away from the substrate; In one of the touch electrodes, the first touch wiring is electrically connected to the third touch wiring.

12. The display panel according to claim 11, wherein: The touch electrode further includes a first connecting wire, and the first connecting wire is located on a sidewall of the second semiconductor portion; In one of the touch electrodes, the first touch wiring is electrically connected to the third touch wiring through the first connecting wiring.

13. The display panel according to claim 11, wherein: The touch electrode further includes a second connecting wire; A first through hole is provided in the second semiconductor portion, the first through hole passes through the second semiconductor portion, and the second connecting trace is filled in the first through hole; In one of the touch electrodes, the first touch wiring is electrically connected to the third touch wiring through the second connecting wiring.

14. The display panel according to claim 11, wherein: The touch electrode further includes a third connecting wire and a fourth connecting wire; The second semiconductor portion is provided with at least one third connecting trace sequentially arranged in a direction away from the substrate, wherein the extending direction of the third connecting trace is parallel to the surface of the substrate, and the second semiconductor portion is further provided with at least two second through holes, wherein the second through holes partially penetrate the second semiconductor portion, and the second through holes are filled with the fourth connecting trace, wherein the fourth connecting trace and the third connecting trace are alternately electrically connected in sequence; In one of the touch electrodes, the first touch wiring is electrically connected to the third touch wiring through the fourth connection wiring and the third connection wiring that are alternately electrically connected in sequence.

15. The display panel according to claim 11, wherein: The third touch wiring is a metal wiring, and the display panel further includes a shielding layer; In the plane where the display panel is located, the projection of the shielding layer covers the projection of the third touch trace.

16. The display panel according to claim 11, wherein: The first touch wiring is a metal wiring, and the third touch wiring is a transparent oxide wiring.

17. The display panel according to claim 1, wherein: The plurality of light-emitting elements further include a second light-emitting element. In the plane where the display panel is located, a projection of the second light-emitting element and a projection of the touch electrode do not overlap.

18. A display device, characterized in that: The display panel comprises the display panel according to any one of claims 1 to 17.

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