Display panel, display panel manufacturing method, and display device

Abstract

The present application discloses a display panel, a display panel manufacturing method, and a display device. The display panel includes a substrate, an array substrate, and a light-emitting element stacked. The array substrate includes a plurality of mutually insulated first electrodes. The light-emitting element includes a second electrode. The first electrode includes a first clamping portion, and the second electrode includes a second clamping portion. The second electrodes of the respective light-emitting elements and the respective first electrodes are mutually clamped through the first clamping portion and the second clamping portion. That is, the first clamping portion of the first electrode can be clamped with the second clamping portion of the second electrode to correct the alignment deviation between the second electrode of the light-emitting element and the first electrode of the array substrate, so that the batch-transferred light-emitting elements are accurately connected to the array substrate. This avoids the transfer failure caused by the alignment deviation between the light-emitting element and the first electrode of the array substrate, improves the transfer success rate, and further enhances the display effect of the display panel.

Description

Technical Field

[0001] This application belongs to the technical field of electronic products, and particularly relates to a display panel, a display panel manufacturing method, and a display device. Background Art

[0002] Light Emitting Diodes (LEDs) are widely used in technical fields such as lighting and display due to their advantages of small size, low power, long service life, and high brightness. A micro-LED display has an LED array of individual pixel elements. Compared with currently widely used display devices, a micro-LED display has better contrast, faster response speed, and lower power consumption.

[0003] Since micro-LEDs are individually manufactured in the form of chips with dimensions in the micron range, during the process of manufacturing a display device, a huge number of micro-LED chips need to be transferred to appropriate positions on a substrate, and the electrodes on the micro-LED chips need to be aligned and welded to the corresponding electrodes on the substrate. However, due to the structural limitations of existing micro-LED chips, misalignment is likely to occur during mass transfer, resulting in a low success rate of mass transfer.

[0004] Therefore, there is an urgent need for a new display panel, a display panel manufacturing method, and a display device. Summary of the Invention

[0005] Embodiments of this application provide a display panel, a display panel manufacturing method, and a display device. By enabling the second electrode and the first electrode of each light-emitting element to be mutually clamped through a first clamping portion and a second clamping portion, the alignment accuracy of the first electrode and the second electrode during mass transfer is ensured, the transfer success rate is increased, and the display effect of the display panel is improved.

[0006] Embodiments of this application on the one hand provide a display panel, the display panel including: a substrate; an array substrate disposed on one side of the substrate, the array substrate including a plurality of mutually insulated first electrodes, the first electrodes including first clamping portions; at least one light-emitting element disposed on the side of the array substrate away from the substrate, the light-emitting element including a second electrode, the second electrode including second clamping portions, and the second electrodes of the respective light-emitting elements and the respective first electrodes being mutually clamped through the first clamping portions and the second clamping portions.

[0007] According to one aspect of this application, one of the first clamping portion and the second clamping portion is provided with a groove portion, and the other is provided with a protrusion portion, and the groove portion and the protrusion portion are mutually clamped to connect the first electrode and the second electrode.

[0008] According to one aspect of the present application, the first clamping portion includes a first connecting section and a second connecting section connected to each other. The first connecting section extends in the direction of the light-emitting element. The second connecting section is connected to one end of the first connecting section close to the light-emitting element, and the extending direction of the second connecting section intersects with the extending direction of the first connecting section. The protruding portion is provided on the first connecting section, and the protruding direction of the protruding portion is the same as the extending direction of the second connecting section. The second clamping portion includes a third connecting section and a fourth connecting section connected to each other. The third connecting section extends in the direction of the array substrate. The fourth connecting section is connected to one end of the third connecting section close to the substrate, and the extending direction of the fourth connecting section intersects with the extending direction of the third connecting section. The groove portion is provided on the fourth connecting section, and the opening direction of the groove portion is the same as the extending direction of the fourth connecting section.

[0009] According to one aspect of the present application, in a direction parallel to the plane where the substrate is located, the protruding portion has a first curved surface, and the groove portion has a second curved surface. The curvatures of the first curved surface and the second curved surface are equal.

[0010] According to one aspect of the present application, in the film stack direction of the display panel, the cross-sectional shapes of the first electrode and the second electrode are at least one of a "T" shape, an "L" shape, or a "J" shape.

[0011] Another aspect of the embodiments of the present application provides a method for manufacturing a display panel, including: providing a transfer substrate on which a light-emitting element is formed, and each light-emitting element includes a second electrode, and the second electrode includes a second clamping portion; providing an array substrate including a plurality of mutually insulated first electrodes, and the first electrodes include first clamping portions; moving the transfer substrate to correspondingly clamp the first electrode and the second electrode through the first clamping portion and the second clamping portion; separating the transfer substrate from the light-emitting element.

[0012] According to one aspect of the present application, in the step of providing the transfer substrate, it includes: forming the second clamping portion by side etching or thin film etching process.

[0013] According to one aspect of the present application, in the step of separating the transfer substrate from the light-emitting element, it includes: moving the transfer substrate in the first direction to separate the transfer substrate from the light-emitting element.

[0014] Another aspect of the embodiments of the present application provides a display device, including a display panel, and the display panel is the display panel in the above embodiments.

[0015] Compared with the prior art, the display panel provided by the embodiment of the present application includes a substrate, an array substrate, and a light-emitting element which are stacked. The array substrate includes a plurality of mutually insulated first electrodes, and the light-emitting element includes a second electrode. In order to improve the alignment accuracy between the second electrode and the corresponding first electrode, the first electrode includes a first clamping portion, and the second electrode includes a second clamping portion. The second electrodes of the light-emitting elements and the first electrodes are mutually clamped through the first clamping portion and the second clamping portion. That is, the first clamping portion of the first electrode can be clamped with the second clamping portion of the second electrode to correct the alignment deviation between the second electrode of the light-emitting element and the first electrode of the array substrate, so that the batch-transferred light-emitting elements are accurately connected to the array substrate. This avoids the transfer failure caused by the alignment deviation between the light-emitting element and the first electrode of the array substrate, improves the transfer success rate, and further enhances the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments of the present application. Obviously, the following described drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a top view of a display panel provided by an embodiment of the present application;

[0018] Figure 2 is provided by one embodiment Figure 1 a cross-sectional view along C-C during the alignment connection process of the first electrode and the second electrode;

[0019] Figure 3 is provided by another embodiment Figure 1 a cross-sectional view along C-C during the alignment connection process of the first electrode and the second electrode;

[0020] Figure 4 is provided by yet another embodiment Figure 1 a cross-sectional view along C-C during the alignment connection process of the first electrode and the second electrode;

[0021] Figure 5 is a schematic structural diagram of the first electrode and the second electrode provided by an embodiment of the present application;

[0022] Figure 6 is Figure 1 a cross-sectional view along C-C of a display panel;

[0023] Figure 7 is a flowchart of a display panel manufacturing method provided by an embodiment of the present application.

[0024] In the accompanying drawings:

[0025] 1 - Substrate; 2 - Array substrate; 21 - First electrode; 211 - First clamping portion; 2111 - First connecting section; 2112 - Second connecting section; 22 - Thin film transistor; 3 - Light emitting element; 31 - Second electrode; 311 - Second clamping portion; 3111 - Third connecting section; 3112 - Fourth connecting section; 4 - Transfer substrate; 100 - Display panel; X - First direction; Y - Second direction. Detailed implementation manners

[0026] The features and exemplary embodiments of various aspects of the present application will be described in detail below. To make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present application and are not configured to limit the present application. For those skilled in the art, the present application can be implemented without some of these specific details. The following description of the embodiments is only provided to provide a better understanding of the present application by showing examples of the present application.

[0027] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0028] It should be understood that when describing the structure of a component, when a layer or a region is referred to as being "above" or "over" another layer or another region, it may mean directly above the other layer or another region, or there may be other layers or regions between it and the other layer or another region. And if the component is turned over, this layer or region will be "below" or "beneath" the other layer or region.

[0029] Without departing from the spirit or scope of the present application, various modifications and variations can be made in the present application, which are obvious to those skilled in the art. Therefore, the present application is intended to cover the modifications and variations of the present application that fall within the scope of the corresponding claims (the claimed technical solutions) and their equivalents. It should be noted that the embodiments provided in the present application can be combined with each other without contradiction. Please refer to Figure 1 and Figure 2 , in the prior art, the light-emitting elements 3 are all disposed on the transfer substrate 4, and the light-emitting elements 3 thereon are batch-transferred by driving the transfer substrate 4, so as to realize the alignment connection between the second electrode 31 on the light-emitting element 3 and the first electrode 21 on the array substrate 2. However, the inventor found that since the transfer amount of the light-emitting elements 3 is large and the accuracy requirement is high, when there is a certain deviation in the position or alignment of a certain light-emitting element 3 on the transfer substrate 4, the second electrode 31 on the light-emitting element 3 and the first electrode 21 on the conductive layer cannot be connected, resulting in transfer failure.

[0030] To solve the above problems, the embodiments of the present application provide a display panel, a display panel manufacturing method, and a display device. The following will describe the embodiments of the display panel, the display panel manufacturing method, and the display device with reference to the accompanying drawings.

[0031] Please refer to Figures 1 to 6 , the embodiments of the present application provide a display panel 100, and the display panel 100 includes: a substrate 1; an array substrate 2 disposed on one side of the substrate 1, the array substrate 2 includes a plurality of mutually insulated first electrodes 21, and the first electrode 21 includes a first clamping portion 211; at least one light-emitting element 3 disposed on the side of the array substrate 2 away from the substrate 1, the light-emitting element 3 includes a second electrode 31, the second electrode 31 includes a second clamping portion 311, and the second electrodes 31 of the light-emitting elements 3 and the first electrodes 21 are mutually clamped and arranged through the first clamping portion 211 and the second clamping portion 311.

[0032] In the display panel 100 according to the embodiment of the present application, it includes a substrate 1, an array substrate 2, and a light-emitting element 3 which are stacked. The array substrate 2 includes a plurality of mutually insulated first electrodes 21, and the light-emitting element 3 includes a second electrode 31. In order to improve the alignment accuracy between the second electrode 31 and the corresponding first electrode 21, the first electrode 21 includes a first clamping portion 211, and the second electrode 31 includes a second clamping portion 311. The second electrode 31 of each light-emitting element 3 and each first electrode 21 are clamped to each other through the first clamping portion 211 and the second clamping portion 311. With the above setting method, when the light-emitting elements 3 are batch transferred, the positions of the light-emitting elements 3 can be adjusted to make the second clamping portions 311 of the second electrodes 31 of the light-emitting elements 3 all clamped to the first clamping portions 211 of the corresponding first electrodes 21, thereby correcting the alignment deviation between the second electrode 31 of the light-emitting element 3 and the first electrode 21 of the array substrate 2. Furthermore, the batch-transferred light-emitting elements 3 can all be accurately connected to the array substrate 2, avoiding the transfer failure caused by the alignment deviation between the light-emitting element 3 and the first electrode 21 of the array substrate 2, improving the transfer success rate, and further enhancing the display effect of the display panel 100.

[0033] Specifically, please refer to Figures 2 to 4 , when the light-emitting elements 3 are batch transferred, there will inevitably be a certain alignment deviation between the second electrodes 31 of some light-emitting elements 3 and the first electrodes 21 of the array substrate 2. When the transfer substrate 4 moves along the first direction X, it will drive the second electrodes 31 of the light-emitting elements 3 thereon to move relative to the first electrodes 21 along the first direction X. Among them, the second clamping portion 311 of the second electrode 31 with accurate alignment will be clamped to the first clamping portion 211 of the first electrode 21. When the transfer substrate 4 continues to move along the first direction X, the first clamping portion 211 will limit the movement of this part of the light-emitting elements 3, so that the light-emitting elements 3 with accurate alignment are separated from the transfer substrate 4 and stably connected to the array substrate 2; for the light-emitting elements 3 that are not aligned due to the alignment deviation, since their second clamping portions 311 are not clamped to the first clamping portions 211, this part of the light-emitting elements 3 will continue to move along the first direction X with the transfer substrate 4 until the second clamping portions 311 of their second electrodes 31 are also clamped to the first clamping portions 211 of the corresponding first electrodes 21, so that this part of the light-emitting elements 3 can also be separated from the transfer substrate 4 and stably connected to the array substrate 2. Therefore, even if there is a certain deviation in the position or alignment of a certain light-emitting element 3 on the transfer substrate 4 itself, by adopting the setting method of clamping each other between the first clamping portion 211 and the second clamping portion 311 in the embodiment of the present application, it is still possible to ensure the alignment connection between the first electrode 21 and the second electrode 31, thereby improving the transfer yield of mass transfer and finally realizing the stable connection between the light-emitting elements 3 and the array substrate 2 in the display panel.

[0034] It can be understood that the deviation in the position and alignment of a certain light-emitting element 3 on the transfer substrate 4 includes not only the deviation in the first direction X, but also the deviation in the second direction Y, and the first direction X intersects with the second direction Y.

[0035] Please refer to Figure 5 , one of the first engaging portion 211 and the second engaging portion 311 is provided with a groove portion A1, and the other is provided with a protruding portion A2. The groove portion A1 and the protruding portion A2 are engaged with each other to connect the first electrode 21 and the second electrode 31. By respectively forming the groove portion A1 and the protruding portion A2 on the first engaging portion 211 and the second engaging portion 311, when a small deviation occurs in the second direction Y when the first electrode 21 and the second electrode 31 are aligned and connected, through the guiding action of the groove portion A1 and the protruding portion A2, a certain straightening effect can be achieved in the second direction Y, so that the second electrode 31 of the light-emitting element 3 is restored to the ideal position, thereby improving the transfer success rate of the light-emitting element 3 and further improving the display effect of the display panel 100.

[0036] In some alternative embodiments, the first engaging portion 211 includes a first connecting section 2111 and a second connecting section 2112 connected to each other. The first connecting section 2111 extends in the direction of the light-emitting element 3. The second connecting section 2112 is connected to one end of the first connecting section 2111 close to the light-emitting element 3, and the extending direction of the second connecting section 2112 intersects with the extending direction of the first connecting section 2111. The protruding portion A2 is provided on the first connecting section 2111, and the protruding direction of the protruding portion A2 is the same as the extending direction of the second connecting section 2112. The second engaging portion 311 includes a third connecting section 3111 and a fourth connecting section 3112 connected to each other. The third connecting section 3111 extends in the direction of the array substrate 2. The fourth connecting section 3112 is connected to one end of the third connecting section 3111 close to the substrate 1, and the extending direction of the fourth connecting section 3112 intersects with the extending direction of the third connecting section 3111. The groove portion A1 is provided on the fourth connecting section 3112, and the opening direction of the groove portion A1 is the same as the extending direction of the fourth connecting section 3112.

[0037] For the convenience of the engagement between the first engaging portion 211 and the second engaging portion 311, the first engaging portion 211 can be set as the first connecting section 2111 and the second connecting section 2112 connected to the first connecting section 2111 and extending toward the second engaging portion 311. At the same time, the second engaging portion 311 can be set as the third connecting section 3111 and the fourth connecting section 3112 connected to the third connecting section 3111 and extending toward the first engaging portion 211, thereby increasing the engagement area between the first engaging portion 211 and the second engaging portion 311 and improving the connection stability between the first electrode 21 and the second electrode 31.

[0038] Optionally, in the film stack direction along the display panel 100, the cross-sectional shapes of the first electrode 21 and the second electrode 31 are at least one of a "T" shape, an "L" shape, or a "J" shape. That is, the connection structure formed by the first connection segment 2111 and the second connection segment 2112 can be at least one of a "T" shape, an "L" shape, or a "J" shape. In the drawings of the present application, only an example where the cross-sections of the first electrode 21 and the second electrode 31 are in an "L" shape is given, but the protection scope of the present application should not be limited thereto.

[0039] Further, in the embodiments of the present application, the protruding portion A2 can be provided on the first connection segment 2111, and the protruding direction of the protruding portion A2 is the same as the extending direction of the second connection segment 2112. The groove portion A1 is provided on the fourth connection segment 3112, and the opening direction of the groove portion A1 is the same as the extending direction of the fourth connection segment 3112. However, it can be understood that the groove portion A1 can also be provided on the third connection segment 3111, the protruding portion A2 is provided on the second connection segment 2112, or groove portions A1 are provided on both the third connection segment 3111 and the fourth connection segment 3112, and at the same time, the protruding portion A2 is provided on the second connection segment 2112 and the first connection segment 2111 corresponding to the groove portion A1. Among them, the protruding portion A2 and the groove portion A1 are respectively provided corresponding to the first latching portion 211 and the second latching portion 311, and their specific setting positions are not specifically limited herein.

[0040] In addition, the orthographic projection of the protruding portion A2 on the plane where the substrate 1 is located can be in a semicircular shape, a trapezoidal shape, a triangular shape, etc. The orthographic projection of the groove portion A1 on the plane where the substrate 1 is located can correspond to the protruding portion A2 and be in a semicircular shape, an inverted trapezoidal shape, an inverted triangular shape, etc., that is, it can satisfy that the opening of the groove portion A1 gradually shrinks in the direction away from the protruding portion A2. Furthermore, through the corresponding connection of the groove portion A1 and the protruding portion A2, it can play a certain guiding and straightening role in the alignment connection of the first electrode 21 and the second electrode 31, thereby improving the transfer success rate.

[0041] Please refer to Figure 5 , to further improve the latching effect between the groove portion A1 and the protruding portion A2, in the direction parallel to the plane where the substrate 1 is located, the protruding portion A2 has a first curved surface, and the groove portion A2 has a second curved surface. The curvatures of the first curved surface and the second curved surface are equal, ensuring that the groove portion A1 and the protruding portion A2 can be mutually engaged, thereby further improving the alignment accuracy of the first electrode 21 and the second electrode 31, ensuring the transfer success rate of the light-emitting element 3, and enhancing the display effect of the display panel 100.

[0042] It should be noted that the second electrode 31 of the light-emitting element 3 refers to the electrode of the light-emitting element 3 connected to the side of the array substrate 2. Since the chip structure of the light-emitting element 3 includes a front-mounted structure and a flip-chip structure, the positive and negative electrodes of the light-emitting elements 3 with the front-mounted structure and the flip-chip structure are both located on the side facing the array substrate 2. Therefore, both the front-mounted structure and the flip-chip structure of the light-emitting element 3 have two second electrodes 31. When connecting the light-emitting elements 3 with the front-mounted structure and the flip-chip structure to the array substrate 2, at least one of the two second electrodes 31 is provided with a second clamping portion 311. Optionally, both of the two second electrodes 31 can be provided with second clamping portions 311. At the same time, first clamping portions 211 are provided on the two first electrodes 21 corresponding to the above two second electrodes 31 of the array substrate 2 to achieve a stable connection between the light-emitting elements 3 with the front-mounted structure and the flip-chip structure and the array substrate 2.

[0043] In addition, the chip structure of the light-emitting element 3 further includes a vertical structure. The positive and negative electrodes of the light-emitting element 3 with the vertical structure are respectively arranged on both sides. Therefore, only one electrode of the light-emitting element 3 with the vertical structure is located on the side facing the array substrate 2, that is, the light-emitting element 3 with the vertical structure only has one second electrode 31. Therefore, a second clamping portion 311 can be provided on this second electrode 31, and a first clamping portion 211 is correspondingly provided on the first electrode 21 of the array substrate 2. Among them, the accompanying drawings of the embodiments of the present application only show the implementation manner in which the chip structure of the light-emitting element 3 is set to the vertical structure, that is, the case where the light-emitting element 3 only has one second electrode 31, which should not be construed as a limitation on the protection scope of the present application.

[0044] Please refer to Figure 6 , taking the chip structure of the light-emitting element 3 set to the vertical structure as an example, to illustrate the light-emitting principle of the light-emitting element 3. In the display panel 100 provided by the embodiments of the present application, a plurality of thin-film transistors 22 are formed on the array substrate 2. The thin-film transistors 22 include a source electrode S, a drain electrode D, an active layer, a gate electrode G, and a gate insulating layer. The first electrode 21 is electrically connected to the source electrode S or the drain electrode D of the thin-film transistor 22, and the second electrode 31 is electrically connected to the first electrode 21. When the gate electrode G of the thin-film transistor 22 controls the thin-film transistor 22 to conduct, the second electrode 31 of the light-emitting element 3 receives the light-emitting voltage signal transmitted by the first electrode 21, and the two electrodes of the light-emitting element 3 are powered on, so that the sub-pixel where it is located is lit, and the light-emitting element 3 emits light.

[0045] Please refer to Figure 7 , the embodiments of the present application also provide a method for manufacturing a display panel, including:

[0046] S110, providing a transfer substrate, on which at least one light-emitting element is formed, and each light-emitting element includes a second electrode, and the second electrode includes a second clamping portion;

[0047] S120. Provide an array substrate, which includes a plurality of mutually insulated first electrodes, and the first electrode includes a first clamping portion;

[0048] S130. Move the transfer substrate to correspondingly clamp the first electrode and the second electrode through the first clamping portion and the second clamping portion;

[0049] S140. Separate the transfer substrate from the light-emitting element.

[0050] It can be understood that a plurality of light-emitting elements 3 are provided on the transfer substrate 4, each light-emitting element 3 includes a second electrode 31, and the array substrate 2 includes a plurality of mutually insulated first electrodes 21. To achieve the alignment connection of each first electrode 21 and the second electrode 31, first, the transfer substrate 4 can be pressed down to achieve the preliminary alignment of each second electrode 31 on the transfer substrate 4 and the first electrode 21, and then the transfer substrate 4 is moved along the first direction X, so that the second electrode 31 of the light-emitting element 3 driven by the transfer substrate 4 is further aligned with the first electrode 21. When the second electrodes 31 of each light-emitting element 3 are aligned and connected with the first electrode 21, the transfer substrate 4 can be separated from the light-emitting element 3, thereby realizing the transfer of the light-emitting element 3.

[0051] Optionally, in the step of providing the array substrate 2, that is, in the S120 step, it includes forming a second clamping portion 311 through side etching or thin-film etching process. That is, the patterning preparation of the first clamping portion 211 and the second clamping portion 311 can be completed by the side etching process of wet etching, or can be completed by the method of secondary coating and then etching. The specific preparation process is not limited here.

[0052] Specifically, in the step of separating the transfer substrate 4 from the light-emitting element 3, that is, in the S140 step, it includes: moving the transfer substrate 4 along the first direction X to separate the transfer substrate 4 from the light-emitting element 3. It is manifested that through the corresponding clamping of the second clamping portion 311 and the first clamping portion 211, when the transfer substrate 4 is moved along the first direction X, the first clamping portion 211 will limit the movement of the second clamping portion 311, so that the light-emitting element 3 is separated from the transfer substrate 4.

[0053] It should be noted that due to a certain alignment deviation between the second electrode 31 of some light-emitting elements 3 and the first electrode 21 of the array substrate 2, during the movement of the transfer substrate 4 along the first direction X, the second clamping portion 311 of the light-emitting element 3 with accurate alignment will be clamped with its corresponding first clamping portion 211, so that this part of the light-emitting element 3 is separated from the transfer substrate 4; by continuously moving the transfer substrate 4 along the first direction X, the second clamping portion 311 of some light-emitting elements 3 that have alignment deviation in the first direction X and have not been separated can be clamped with their corresponding first clamping portions 211, so that the remaining part of the light-emitting element 3 is also separated from the transfer substrate 4.

[0054] Further, after the step of separating the transfer substrate 4 from the light-emitting element 3, that is, after step S140, it further includes: heating and welding the corresponding second engaging portion 311 and the first engaging portion 211, thereby realizing the transfer of the light-emitting element 3.

[0055] The embodiment of the present application further provides a display device, including: a display panel 100, and the display panel 100 is the display panel 100 in the above embodiment. Therefore, the display device provided by the embodiment of the present application has the technical effects of the technical solutions of the display panel 100 in any of the above embodiments. The same or corresponding structures and explanations of terms are not described in detail here. The display device provided by the embodiment of the present application can be a mobile phone or any electronic product with a display function, including but not limited to the following categories: televisions, laptop computers, desktop monitors, tablet computers, digital cameras, smart bracelets, smart glasses, in-vehicle displays, medical devices, industrial control devices, touch interaction terminals, etc. The embodiment of the present application does not make special limitations on this.

[0056] The above is only the specific implementation manner of the present application. Those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working processes of the above-described systems, modules, and units can refer to the corresponding processes in the foregoing method embodiments and will not be described in detail here. It should be understood that the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present application.

[0057] It should also be noted that the exemplary embodiments mentioned in the present application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above steps. That is, the steps can be executed in the order mentioned in the embodiments, or different from the order in the embodiments, or several steps can be executed simultaneously.

Claims

1. A display panel, characterized in that, The display panel includes: a substrate; an array substrate disposed on one side of the substrate, the array substrate including a plurality of mutually insulated first electrodes, and the first electrodes including first engaging portions; at least one light-emitting element disposed on a side of the array substrate away from the substrate, the light-emitting element including a second electrode, the second electrode including a second engaging portion, and the second electrodes of the light-emitting elements and the first electrodes being mutually engaged through the first engaging portions and the second engaging portions; the first engaging portion is provided with a protruding portion, the second engaging portion is provided with a groove portion, and the groove portion and the protruding portion are mutually engaged to connect the first electrode and the second electrode; wherein, the first engaging portion includes a first connection segment and a second connection segment connected to each other, the first connection segment extends in a direction towards the light-emitting element, the second connection segment is connected to an end of the first connection segment close to the light-emitting element and the extending direction of the second connection segment intersects with the extending direction of the first connection segment, the protruding portion is disposed on the first connection segment, and the protruding direction of the protruding portion is the same as the extending direction of the second connection segment; the second engaging portion includes a third connection segment and a fourth connection segment connected to each other, the third connection segment extends in a direction towards the array substrate, the fourth connection segment is connected to an end of the third connection segment close to the substrate and the extending direction of the fourth connection segment intersects with the extending direction of the third connection segment, the groove portion is disposed on the fourth connection segment, and the opening direction of the groove portion is the same as the extending direction of the fourth connection segment.

2. The display panel according to claim 1, wherein In a direction parallel to the plane where the substrate is located, the protruding portion has a first curved surface, the groove portion has a second curved surface, and the curvatures of the first curved surface and the second curved surface are equal.

3. The display panel according to claim 1, characterized in that, In a direction of the film stack of the display panel, the cross-sectional shapes of the first electrode and the second electrode are at least one of "T", "L", or "J".

4. A method for manufacturing a display panel, used for manufacturing a display panel, characterized in that, The display panel is the display panel according to any one of claims 1-3, and a manufacturing method of the display panel includes: providing a transfer substrate on which light-emitting elements are formed, each of the light-emitting elements including a second electrode, and the second electrode including a second engaging portion; providing an array substrate, the array substrate including a plurality of mutually insulated first electrodes, and the first electrodes including first engaging portions; moving the transfer substrate to correspondingly engage the first electrode and the second electrode through the first engaging portion and the second engaging portion; separating the transfer substrate from the light-emitting elements.

5. The method for manufacturing a display panel according to claim 4, wherein, In the step of providing the transfer substrate, it includes: forming the second engaging portion by side etching or thin film etching process.

6. The method for manufacturing a display panel according to claim 4, wherein, In the step of separating the transfer substrate from the light-emitting elements, it includes: moving the transfer substrate in a first direction to separate the transfer substrate from the light-emitting elements.

7. The method for manufacturing a display panel according to claim 4, wherein After the step of separating the transfer substrate from the light-emitting elements, it further includes: heating and welding the corresponding second engaging portion and the first engaging portion.

8. A display device, characterized in that, including: A display panel, which is the display panel according to any one of claims 1 to 3.

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