Display panel and display device

Abstract

The application discloses a display panel and a display device. The display panel comprises a substrate, a contact electrode, a light-emitting device and an insulating layer. The contact electrode comprises a first pad and a second pad arranged at intervals in a first direction. The light-emitting device comprises a first electrode and a second electrode. The first electrode of the light-emitting device is electrically connected with the first pad, and the second electrode is electrically connected with the second pad, so as to realize light-emitting display of the light-emitting device. At least one of the first pad and the second pad overlaps with the projection of the insulating part on the substrate. After the light-emitting device is transferred to the contact electrode and is electrically connected with the contact electrode, the first pad and the second pad are prone to gather conductive particles. The insulating part can improve the problem that the conductive particles are in contact with the first pad and the second pad after gathering, leading to conduction of the first pad and the second pad and short circuit of the light-emitting device, and improve the use performance of the array substrate.

Description

Technical Field

[0001] This application relates to the field of displays, specifically to a display panel and a display device. Background Technology

[0002] With the development of display technology, flat panel display devices based on technologies such as light-emitting diodes (LEDs) have become the mainstream display devices due to their advantages such as high image quality, power saving, thin body and wide range of applications, and are widely used in various consumer electronic products such as mobile phones, televisions, laptops, and desktop computers.

[0003] However, the performance of current Micro-LED and Mini-LED display products needs to be improved. Summary of the Invention

[0004] This application provides a display panel and a display device, which aim to improve the performance of Micro-LED and Mini-LED display products.

[0005] A first aspect of this application provides a display panel, comprising: a substrate; a contact electrode located on one side of the substrate, the contact electrode including a first pad and a second pad spaced apart along a first direction; a light-emitting device located on the side of the contact electrode away from the substrate, the light-emitting device having a first electrode and a second electrode, the first electrode being electrically connected to the first pad and the second electrode being electrically connected to the second pad; and an insulating layer located between the substrate and the light-emitting device and including an insulating portion, at least a portion of the insulating portion being located between the first pad and the second pad, wherein the orthographic projection of at least one of the first pad and the second pad on the substrate overlaps with the orthographic projection of the insulating portion on the substrate.

[0006] According to an embodiment of the first aspect of this application, the orthographic projection of one of the first pad and the second pad onto the substrate overlaps with the orthographic projection of the insulating portion onto the substrate.

[0007] According to any of the foregoing embodiments of the first aspect of this application, the first pad includes a first top surface, a first bottom surface, and a first side surface connected between the first top surface and the first bottom surface, which are disposed opposite each other in the thickness direction of the display panel. The first top surface is located on the side of the first bottom surface away from the substrate, and the orthographic projection of the first side surface of the first pad toward the second pad on the substrate overlaps with the orthographic projection of the insulating portion on the substrate.

[0008] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the first top surface onto the substrate overlaps with the orthographic projection of the insulating portion onto the substrate.

[0009] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the second pad on the substrate is located outside the orthographic projection of the insulating portion on the substrate.

[0010] According to any of the foregoing embodiments of the first aspect of this application, the insulating portion has a first end in the first direction that is far away from the second pad, the orthographic projection of the first end on the substrate overlaps with the orthographic projection of the first pad on the substrate, and the minimum distance between the first end and the second pad in the first direction is 0.5μm to 2.5μm.

[0011] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the first pad on the substrate and the orthographic projection of the insulating portion on the substrate overlap to form a first overlapping region, and the size of the first overlapping region in the first direction is 1.5μm to 3.5μm.

[0012] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projections of the first pad and the second pad on the substrate overlap with the orthographic projections of the insulating portion on the substrate.

[0013] According to any of the foregoing embodiments of the first aspect of this application, the second pad includes a second top surface, a second bottom surface, and a second side surface connected between the second top surface and the second bottom surface, which are disposed opposite each other in the thickness direction of the display panel. The second top surface is located on the side of the second bottom surface away from the substrate, and the orthographic projection of the second side surface of the second pad toward the first pad on the substrate overlaps with the orthographic projection of the insulating portion on the substrate.

[0014] According to any of the foregoing embodiments of the first aspect of this application, the insulating portion has a first end and a second end disposed opposite to each other in a first direction. The orthographic projection of the first end on the substrate overlaps with the orthographic projection of the first pad on the substrate, and the orthographic projection of the second end on the substrate overlaps with the orthographic projection of the second pad on the substrate. In the first direction, the distance between the first end and the second end is 0.5 μm to 4 μm.

[0015] According to any of the foregoing embodiments of the first aspect of this application, in the first direction, the distance between the first end and the second end is 0.5 μm to 2.5 μm.

[0016] According to any of the foregoing embodiments of the first aspect of this application, the orthographic projection of the second pad on the substrate and the orthographic projection of the insulating portion on the substrate overlap to form a second overlapping region, and the size of the second overlapping region in the first direction is 1.5μm to 3.5μm.

[0017] An embodiment of the second aspect of this application provides a display device that includes a display panel of any of the above embodiments.

[0018] According to an embodiment of this application, the display panel includes a substrate, contact electrodes, a light-emitting device, and an insulating layer. The contact electrodes include a first pad and a second pad spaced apart in a first direction. The light-emitting device includes a first electrode and a second electrode. The first electrode and the first pad are electrically connected, and the second electrode and the second pad are electrically connected, enabling the light-emitting device to emit light. At least one of the first pad and the second pad overlaps with the orthographic projection of the insulating portion onto the substrate. When the light-emitting device is transferred to the contact electrode and electrically connected, conductive particles are prone to accumulate between the first pad and the second pad. The insulating portion can mitigate the problem of conductive particles accumulating and making contact with the first and second pads, causing short circuits in the light-emitting device and resulting in conductivity between the first and second pads, thus improving the performance of the display panel. Attached Figure Description

[0019] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals denote the same or similar features, and the drawings are not drawn to scale.

[0020] Figure 1 This is a partial cross-sectional view of a display panel provided in an embodiment of this application;

[0021] Figure 2 This is a partial cross-sectional view of the display panel in another embodiment;

[0022] Figure 3 This is a partial cross-sectional view of the display panel in yet another embodiment;

[0023] Figure 4 This is a partial cross-sectional view of the display panel in another embodiment;

[0024] Figure 5 This is a partial cross-sectional view of the display panel in another embodiment;

[0025] Figure 6 This is a partial cross-sectional view of the display panel in another embodiment;

[0026] Figure 7 This is a partial cross-sectional view of the display panel in another embodiment;

[0027] Figure 8 This is a partial cross-sectional view of the display panel in another embodiment;

[0028] Figure 9 This is a partial cross-sectional view of the display panel in another embodiment;

[0029] Figure 10 This is a partial cross-sectional view of the display panel in another embodiment.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10. Display panel;

[0032] 100. Substrate;

[0033] 200, Contact electrode; 210, First pad; 211, First top surface; 212, First bottom surface; 213, First side surface; 220, Second pad; 221, Second top surface; 222, Second bottom surface; 223, Second side surface; 230, First overlapping area; 240, Second overlapping area;

[0034] 300. Light-emitting device; 310. First electrode; 320. Second electrode;

[0035] 400, Insulating layer; 410, Insulating part; 411, First end; 412, Second end;

[0036] X, the first direction. Detailed Implementation

[0037] The features and exemplary embodiments of various aspects of this application will now be described in detail. To make the objectives, technical solutions, and advantages of this application clearer, the 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 this application and are not configured to limit this application. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples of this application.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0039] It should be understood that when describing the structure of a component, when referring to a layer or region as being "above" or "on top of" another layer or region, it can mean that it is directly above the other layer or region, or that it contains other layers or regions between it and the other layer or region. Furthermore, if the component is flipped over, that layer or region will be located "below" or "under" the other layer or region.

[0040] This application provides a display panel and a display device. The embodiments of the display panel and the display device will be described below with reference to the accompanying drawings.

[0041] This application provides a display panel and a display device. The display panel can be a Micro-LED (Micro Light Emitting Diode) or Mini-LED (Mini Light Emitting Diode) display panel.

[0042] Please refer to the following: Figures 1 to 3 , Figure 1 This is a partial cross-sectional view of a display panel provided in an embodiment of this application; Figure 2 This is a partial cross-sectional view of the display panel in another embodiment; Figure 3 This is a partial cross-sectional view of the display panel in yet another embodiment.

[0043] like Figures 1 to 3 As shown, a first aspect embodiment of this application provides a display panel 10, which includes: a substrate 100; a contact electrode 200 located on one side of the substrate 100, the contact electrode 200 including a first pad 210 and a second pad 220 spaced apart along a first direction X; a light-emitting device 300 located on the side of the contact electrode 200 away from the substrate 100, the light-emitting device 300 having a first electrode 310 and a second electrode 320, the first electrode 310 being electrically connected to the first pad 210 and the second electrode 320 being electrically connected to the second pad 220; and an insulating layer 400 located between the substrate 100 and the light-emitting device 300 and including an insulating portion 410, at least a portion of the insulating portion 410 being located between the first pad 210 and the second pad 220, wherein the orthographic projection of at least one of the first pad 210 and the second pad 220 on the substrate 100 overlaps with the orthographic projection of the insulating portion 410 on the substrate 100.

[0044] According to an embodiment of this application, the display panel 10 includes a substrate 100, contact electrodes 200, a light-emitting device 300, and an insulating layer 400. The contact electrodes 200 include a first pad 210 and a second pad 220 spaced apart in a first direction X. The light-emitting device 300 includes a first electrode 310 and a second electrode 320. The first electrode 310 and the first pad 210 of the light-emitting device 300 are electrically connected, and the second electrode 320 and the second pad 220 are electrically connected, thereby enabling the light-emitting device 300 to emit light for display. At least one of the first pad 210 and the second pad 220 overlaps with the orthographic projection of the insulating portion 410 on the substrate 100. When the light-emitting device 300 is transferred to the contact electrode 200 and electrically connected to the contact electrode 200, conductive particles are prone to accumulate between the first pad 210 and the second pad 220. The provision of the insulating portion 410 can improve the problem of conductive particles accumulating and making contact with the first pad 210 and the second pad 220, causing the first pad 210 and the second pad 220 to conduct and the light-emitting device 300 to short-circuit, thereby improving the performance of the display panel 10.

[0045] The overlap between the orthographic projection of at least one of the first pad 210 and the second pad 220 on the substrate 100 and the orthographic projection of the insulating portion 410 on the substrate 100 includes:

[0046] The orthographic projection of the first pad 210 on the substrate 100 overlaps with the orthographic projection of the insulating portion 410 on the substrate 100; or, the orthographic projection of the second pad 220 on the substrate 100 overlaps with the orthographic projection of the insulating portion 410 on the substrate 100; or, the orthographic projections of the first pad 210 and the second pad 220 on the substrate 100 overlap with the orthographic projection of the insulating portion 410 on the substrate 100.

[0047] The overlap of the orthographic projection of the first pad 210 on the substrate 100 and the orthographic projection of the insulating portion 410 on the substrate 100 means that the insulating portion 410 extends and covers a portion of the surface of the first pad 210 facing away from the substrate, or that the edges of the first pad 210 and the insulating portion 410 abut against each other.

[0048] The overlap of the orthographic projection of the second pad 220 onto the substrate 100 and the orthographic projection of the insulating portion 410 onto the substrate 100 means that the insulating portion 410 extends and covers a portion of the surface of the second pad 220 facing away from the substrate, or that the edges of the second pad 220 and the insulating portion 410 abut against each other.

[0049] like Figure 1 As shown, one end of the insulating portion 410 extends and covers a portion of the surface of the first pad 210 facing away from the substrate, while the other end is spaced apart from the second pad 220.

[0050] like Figure 2As shown, one end of the insulating portion 410 abuts against the edge of the first pad 210, and the other end is spaced apart from the second pad 220.

[0051] like Figure 3 As shown, one end of the insulating portion 410 extends and covers a portion of the surface of the second pad 220 facing away from the substrate, while the other end is spaced apart from the first pad 210.

[0052] Optionally, the substrate 100 includes a substrate and a driving circuit located on the substrate. The driving circuit and the contact electrode 200 are electrically connected to drive the light-emitting device 300 to emit light.

[0053] Optionally, the material of the contact electrode 200 includes Ti / Al / Ti three-layer structure, Mo / Al / Mo three-layer structure, ITO / Ag / ITO three-layer structure, Ti / Cu / Ti three-layer structure, Ti, Mo, Cu, etc.

[0054] Optionally, the display panel 10 further includes a conductive layer located between the contact electrode 200 and the light-emitting device 300, through which the light-emitting device 300 is electrically connected to the first pad 210 and the second pad 220. For example, the material of the conductive layer includes anisotropic conductive film (ACF) to enable the light-emitting device 300 to be electrically connected to the first pad 210 and the second pad 220 through the conductive layer. When the material of the conductive layer is ACF, the light-emitting device 300 presses on the ACF, causing conductive particles in the ACF to move between the first pad 210 and the second pad 220 and accumulate, easily short-circuiting the first pad 210 and the second pad 220. Therefore, by providing the insulating part 410, the problem of conductive particles accumulating and making contact with the first pad 210 and the second pad 220, causing the first pad 210 and the second pad 220 to conduct and the light-emitting device 300 to short-circuit can be improved, thus improving the performance of the display panel 10.

[0055] Optionally, the thickness of the insulating portion 410 is greater than or equal to 0.15 μm, which can improve the problem that the insulation effect of the insulating portion 410 is poor due to its small thickness, and the insulation portion 410 is difficult to manufacture.

[0056] Optionally, the material of the insulating portion 410 includes inorganic materials, such as silicon nitride, silicon oxide, etc. When the material of the insulating portion 410 is an inorganic material, the preparation steps of the insulating portion 410 are as follows: forming an inorganic material film on the contact electrode 200, performing photolithography on the mask material, and finally performing dry etching to form the insulating portion 410.

[0057] like Figures 1 to 3As shown, in some optional embodiments, the orthographic projection of one of the first pad 210 and the second pad 220 on the substrate 100 overlaps with the orthographic projection of the insulating portion 410 on the substrate 100.

[0058] In these optional embodiments, the orthographic projection of the first pad 210 onto the substrate 100 overlaps with the orthographic projection of the insulating portion 410 onto the substrate 100, and the second pad 220 is spaced apart from the insulating portion 410; alternatively, the orthographic projection of the second pad 220 onto the substrate 100 overlaps with the orthographic projection of the insulating portion 410 onto the substrate 100, and the first pad 210 is spaced apart from the insulating portion 410. When the light-emitting device 300 is transferred to the contact electrode 200 and electrically connected to the contact electrode 200, conductive particles are prone to accumulate between the first pad 210 and the second pad 220. The insulating portion 410 covering the first pad 210 or the second pad 220 can improve the problem of conductive particles accumulating and making contact with the first pad 210 and the second pad 220, causing the first pad 210 and the second pad 220 to conduct and the light-emitting device 300 to short-circuit, thereby improving the performance of the display panel 10.

[0059] There is an effective electrode distance between the first pad 210 and the second pad 220, which is the minimum distance between the surface of the first pad 210 exposed by the insulating layer 400 and the surface of the second pad 220 exposed by the insulating layer 400 in the first direction X. When the orthographic projection of the first pad 210 on the substrate 100 overlaps with the orthographic projection of the insulating portion 410 covering the substrate 100, the second pad 220 is not covered and its surface is fully exposed. Alternatively, when the orthographic projection of the second pad 220 on the substrate 100 overlaps with the orthographic projection of the insulating portion 410 covering the substrate 100, the first pad 210 is not covered and its surface is fully exposed. Compared to the solution where the insulating portion 410 simultaneously covers the first pad 210 and the second pad 220, the effective electrode distance between the first pad 210 and the second pad 220 is reduced, and the exposed area of ​​the second pad 220 is larger. This provides a larger overlap area for the second electrode 320 of the light-emitting device 300, which can improve the problem that the light-emitting device 300 is difficult to overlap with the contact electrode 200 due to misalignment during transfer.

[0060] like Figure 1 and Figure 2 As shown, in some optional embodiments, the first pad 210 includes a first top surface 211, a first bottom surface 212 disposed opposite to each other in the thickness direction of the display panel 10, and a first side surface 213 connected between the first top surface 211 and the first bottom surface 212. The first top surface 211 is located on the side of the first bottom surface 212 away from the substrate 100. The orthographic projection of the first side surface 213 of the first pad 210 toward the second pad 220 onto the substrate 100 overlaps with the orthographic projection of the insulating portion 410 onto the substrate 100.

[0061] The first side 213 of the first pad 210 facing the second pad 220 overlaps with the orthographic projection of the insulating portion 410 on the substrate 100, meaning that the edges of the first side 213 and the insulating portion 410 abut against each other, or the insulating portion 410 extends and covers a portion of the surface of the first pad 210 facing away from the substrate 100.

[0062] In these optional embodiments, after the light-emitting device 300 is transferred to the contact electrode 200 and electrically connected to the contact electrode 200, conductive particles are prone to accumulate between the first pad 210 and the second pad 220. The orthographic projection of the first side 213 of the first pad 210 facing the second pad 220 onto the substrate 100 overlaps with the orthographic projection of the insulating portion 410 onto the substrate 100, which can block the conductive particles from the first pad 210. This improves the problem that the conductive particles accumulate and make contact with the first pad 210 and the second pad 220, causing the first pad 210 and the second pad 220 to conduct and the light-emitting device 300 to short-circuit. The effective electrode distance is the distance between the first top surface 211 of the first pad 210 and the second pad 220 in the first direction X. In the scheme where the insulating portion 410 simultaneously covers the first side surface 213 and the first top surface 211 of the first pad 210, the first side surface 213 and the edge of the insulating portion 410 abut against each other, which can reduce the effective electrode distance between the first pad 210 and the second pad 220.

[0063] like Figure 1 As shown, in some optional embodiments, the orthographic projection of the first top surface 211 onto the substrate 100 overlaps with the orthographic projection of the insulating portion 410 onto the substrate 100. This means that the edges of the first side surface 213 and the insulating portion 410 abut against each other, or the insulating portion 410 extends and covers a portion of the surface of the first pad 210 facing away from the substrate 100.

[0064] In these optional embodiments, the first side surface 213 and part of the first top surface 211 of the first pad 210 are covered by the insulating portion 410, increasing the coverage of the insulating portion 410 over the first pad 210, thereby further blocking the first pad 210 and conductive particles, and improving the problem that conductive particles, after accumulating, make contact with the first pad 210 and the second pad 220, causing the first pad 210 and the second pad 220 to conduct and the light-emitting device 300 to short-circuit.

[0065] Optionally, the orthographic projection of the second pad 220 onto the substrate 100 is located outside the orthographic projection of the insulating portion 410 onto the substrate 100.

[0066] In these optional embodiments, the orthographic projection of the first pad 210 onto the substrate 100 overlaps with the orthographic projection of the insulating portion 410 onto the substrate 100, and the second pad 220 is spaced apart from the insulating portion 410. When the light-emitting device 300 is transferred to the contact electrode 200 and electrically connected to the contact electrode 200, conductive particles are prone to accumulate between the first pad 210 and the second pad 220. The overlap of the orthographic projection of the first pad 210 onto the substrate 100 and the orthographic projection of the insulating portion 410 onto the substrate 100 can improve the problem of conductive particles accumulating and making contact with the first pad 210 and the second pad 220, causing the first pad 210 and the second pad 220 to conduct and the light-emitting device 300 to short-circuit, thereby improving the performance of the display panel 10. When the orthographic projection of the first pad 210 on the substrate 100 overlaps with the orthographic projection of the insulating portion 410 on the substrate 100, the second pad 220 is not covered by the insulating portion 410, and the surface of the second pad 220 is fully exposed. Compared with the solution where the insulating portion 410 simultaneously covers the first pad 210 and the second pad 220, the effective electrode distance between the first pad 210 and the second pad 220 is reduced, and the exposed area of ​​the second pad 220 is larger. This provides a larger overlap area for the second electrode 320 of the light-emitting device 300, which can improve the problem that the light-emitting device 300 is difficult to overlap with the contact electrode 200 due to the misalignment of the light-emitting device 300 during transfer.

[0067] Please see Figure 4 , Figure 4 This is a partial cross-sectional view of the display panel in another embodiment.

[0068] like Figure 4 As shown, in some optional embodiments, the insulating portion 410 has a first end 411 in the first direction X that is away from the second pad 220. The orthographic projection of the first end 411 on the substrate 100 overlaps with the orthographic projection of the first pad 210 on the substrate 100. The minimum distance D1 between the first end 411 and the second pad 220 in the first direction X is 0.5 μm to 2.5 μm. For example, the minimum distance between the first end 411 and the second pad 220 in the first direction X is 0.5 μm, 1 μm, 1.5 μm, 2.5 μm, etc.

[0069] The minimum distance between the first end 411 and the second pad 220 in the first direction X refers to the distance between the closest end of the second pad 220 and the first pad 210 and the first end 411 in the first direction X.

[0070] The overlap of the orthographic projection of the first end 411 on the substrate 100 and the orthographic projection of the first pad 210 on the substrate 100 means that the insulating portion 410 extends and covers a portion of the surface of the first pad 210 away from the substrate 100, or the first pad 210 abuts against the first end 411 of the insulating portion 410.

[0071] In these optional embodiments, the minimum distance between the first end 411 and the second pad 220 in the first direction X is greater than or equal to 0.5 μm. This can improve the problem that if the distance between the first end 411 and the second pad 220 in the first direction X is too small, i.e., the effective electrode distance between the first pad 210 and the second pad 220 is too small, conductive particles will easily aggregate and make contact with the first pad 210 and the second pad 220, causing a short circuit in the light-emitting device 300. If the minimum distance between the first end 411 and the second pad 220 in the first direction X is less than or equal to 2.5 μm, this can improve the problem that if the distance between the first end 411 and the second pad 220 in the first direction X is too large, i.e., the effective electrode distance between the first pad 210 and the second pad 220 is too large, the surface area exposed by the insulating layer 400 on the first pad 210 will be too small, causing the light-emitting device 300 to be misaligned after transfer and making it difficult to connect with the first pad 210.

[0072] Please see Figure 5 , Figure 5 This is a partial cross-sectional view of the display panel in another embodiment.

[0073] like Figure 5 As shown, in some optional embodiments, the orthographic projection of the first pad 210 onto the substrate 100 overlaps with the orthographic projection of the insulating portion 410 onto the substrate 100 to form a first overlapping region 230, and the dimension D2 of the first overlapping region 230 in the first direction X is 1.5μm to 3.5μm. For example, the dimension of the first overlapping region 230 in the first direction X is 1.5μm, 2μm, 2.5μm, 3.5μm, etc.

[0074] In these optional embodiments, the size of the first overlapping region 230 in the first direction X is greater than or equal to 1.5 μm. This can improve the problem that if the size of the first overlapping region 230 in the first direction X is too small, that is, the area covered by the insulating part 410 on the first pad 210 is too small, it will cause conductive particles to easily make contact and electrical connections with the first pad 210 and the second pad 220 after aggregation, resulting in a short circuit of the light-emitting device 300. If the size of the first overlapping region 230 in the first direction X is less than or equal to 3.5 μm, it can improve the problem that if the size of the first overlapping region 230 in the first direction X is too large, the surface area exposed by the insulating layer 400 on the first pad 210 will be too small, causing the light-emitting device 300 to be misaligned after transfer and difficult to overlap with the first pad 210.

[0075] Please refer to the following: Figures 6 to 8 , Figure 6 This is a partial cross-sectional view of the display panel in another embodiment; Figure 7 This is a partial cross-sectional view of the display panel in another embodiment; Figure 8 This is a partial cross-sectional view of the display panel in another embodiment.

[0076] like Figures 6 to 8 As shown, in some optional embodiments, the orthographic projections of the first pad 210 and the second pad 220 on the substrate 100 overlap with the orthographic projections of the insulating portion 410 on the substrate 100.

[0077] In these optional embodiments, after the light-emitting device 300 is transferred to the contact electrode 200 and electrically connected to the contact electrode 200, conductive particles are prone to accumulate between the first pad 210 and the second pad 220. The orthographic projections of the first pad 210 and the second pad 220 on the substrate 100 overlap with the orthographic projections of the insulating portion 410 on the substrate 100. This can further improve the problem of conductive particles accumulating and making contact with the first pad 210 and the second pad 220, causing the first pad 210 and the second pad 220 to conduct and the light-emitting device 300 to short-circuit, thereby improving the performance of the display panel 10.

[0078] like Figure 6 and Figure 7 As shown, in some optional embodiments, the second pad 220 includes a second top surface 221, a second bottom surface 222 disposed opposite to each other in the thickness direction of the display panel 10, and a second side surface 223 connected between the second top surface 221 and the second bottom surface 222. The second top surface 221 is located on the side of the second bottom surface 222 that is away from the substrate 100. The orthographic projection of the second side surface 223 of the second pad 220 toward the first pad 210 onto the substrate 100 overlaps with the orthographic projection of the insulating portion 410 onto the substrate 100.

[0079] The orthographic projection of the second side 223 of the second pad 220 facing the first pad 210 onto the substrate 100 overlaps with the orthographic projection of the insulating portion 410 onto the substrate 100. This means that the second side 223 abuts against the edge of the insulating portion 410, or that the insulating portion 410 extends and covers a portion of the surface of the second pad 220 facing away from the substrate 100.

[0080] In these optional embodiments, after the light-emitting device 300 is transferred to the contact electrode 200 and electrically connected to the contact electrode 200, conductive particles are prone to accumulate between the first pad 210 and the second pad 220. The orthographic projection of the second side 223 of the second pad 220 facing the first pad 210 onto the substrate 100 overlaps with the orthographic projection of the insulating portion 410 onto the substrate 100, which can block the conductive particles from the second pad 220. This improves the problem that the conductive particles accumulate and make contact with the first pad 210 and the second pad 220, causing the first pad 210 and the second pad 220 to conduct and the light-emitting device 300 to short-circuit.

[0081] Optionally, the orthographic projection of the first side 213 of the first pad 210 facing the second pad 220 onto the substrate 100 overlaps with the orthographic projection of the insulating portion 410 onto the substrate 100, and the orthographic projection of the second side 223 of the second pad 220 facing the first pad 210 onto the substrate 100 overlaps with the orthographic projection of the insulating portion 410 onto the substrate 100.

[0082] like Figure 6 and Figure 8 As shown, optionally, the orthographic projection of the second top surface 221 onto the substrate 100 overlaps with the orthographic projection of the insulating portion 410 onto the substrate 100, increasing the coverage area of ​​the insulating portion 410 on the second pad 220. This further improves the problem of short circuits in the light-emitting device 300 caused by the easy contact and electrical connection between conductive particles and the first pad 210 and the second pad 220 after particle aggregation. The overlap of the orthographic projection of the second top surface 221 onto the substrate 100 and the orthographic projection of the insulating portion 410 onto the substrate 100 means that the edge of the second side surface 223 and the insulating portion 410 abuts against each other, or the insulating portion 410 extends and covers a portion of the surface of the second pad 220 facing away from the substrate 100.

[0083] like Figure 6 As shown, the insulating portion 410 extends and covers a portion of the surface of the first pad 210 on the side opposite to the substrate 100, and the second side 223 abuts against the edge of the insulating portion 410.

[0084] like Figure 7 As shown, the first side surface 213 abuts against the edge of the insulating portion 410, and the second side surface 223 abuts against the edge of the insulating portion 410.

[0085] like Figure 8 As shown, optionally, the insulating portion 410 extends and covers a portion of the surface of the first pad 210 away from the substrate 100, and the insulating portion 410 extends and covers a portion of the surface of the second pad 220 away from the substrate 100.

[0086] Please see Figure 9 , Figure 9 This is a partial cross-sectional view of the display panel in another embodiment.

[0087] like Figure 9 As shown, in some optional embodiments, the insulating portion 410 has a first end 411 and a second end 412 disposed opposite to each other in the first direction X. The orthographic projection of the first end 411 on the substrate 100 overlaps with the orthographic projection of the first pad 210 on the substrate 100, and the orthographic projection of the second end 412 on the substrate 100 overlaps with the orthographic projection of the second pad 220 on the substrate 100. In the first direction X, the distance D3 between the first end 411 and the second end 412 is 0.5 μm to 4 μm. For example, the distance between the first end 411 and the second end 412 is 0.5 μm, 1 μm, 2.5 μm, 4 μm, etc.

[0088] The overlap of the orthographic projection of the second end 412 on the substrate 100 and the orthographic projection of the second pad 220 on the substrate 100 means that the insulating portion 410 extends and covers a portion of the surface of the second pad 220 away from the substrate 100, or the second pad 220 abuts against the second end 412 of the insulating portion 410.

[0089] In these optional embodiments, the distance between the first end 411 and the second end 412 is greater than or equal to 0.5 μm. This can improve the problem that if the distance between the first end 411 and the second end 412 is too small, i.e., the effective electrode distance between the first pad 210 and the second pad 220 is too small, conductive particles will easily aggregate and make contact with the first pad 210 and the second pad 220, causing a short circuit in the light-emitting device 300. If the distance between the first end 411 and the second end 412 is less than or equal to 4 μm, this can improve the problem that if the distance between the first end 411 and the second end 412 is too large, i.e., the effective electrode distance between the first pad 210 and the second pad 220 is too large, the surface area exposed by the insulating layer 400 of the first pad 210 and the second pad 220 will be too small, causing the light-emitting device 300 to be misaligned after transfer and making it difficult to connect with the first pad 210 and the second pad 220.

[0090] More preferably, in the first direction X, the distance D3 between the first end 411 and the second end 412 is 0.5 μm to 2.5 μm. For example, the distance between the first end 411 and the second end 412 is 0.5 μm, 1 μm, 2 μm, 2.5 μm, etc.

[0091] Please see Figure 10 , Figure 10 This is a partial cross-sectional view of the display panel in another embodiment.

[0092] like Figure 10 As shown, in some optional embodiments, the orthographic projection of the second pad 220 onto the substrate 100 overlaps with the orthographic projection of the insulating portion 410 onto the substrate 100 to form a second overlapping region 240, wherein the dimension D4 of the second overlapping region 240 in the first direction X is 1.5 μm to 3.5 μm. For example, the dimension of the second overlapping region 240 in the first direction X is 1.5 μm, 2 μm, 2.5 μm, 3.5 μm, etc.

[0093] In these optional embodiments, the size of the second overlapping region 240 in the first direction X is greater than or equal to 1.5 μm. This can improve the problem that if the size of the second overlapping region 240 in the first direction X is too small, that is, the area covered by the insulating part 410 on the second pad 220 is too small, it will cause conductive particles to easily make contact and electrical connections with the first pad 210 and the second pad 220 after aggregation, resulting in a short circuit of the light-emitting device 300. If the size of the second overlapping region 240 in the first direction X is less than or equal to 3.5 μm, this can improve the problem that if the size of the second overlapping region 240 in the first direction X is too large, the surface area of ​​the second pad 220 exposed from the insulating layer 400 will be too small, causing the light-emitting device 300 to be misaligned after transfer and difficult to overlap with the second pad 220.

[0094] The structural design in this embodiment can be applied to other display panels 10. The specific choice can be made according to the actual situation, and this application does not impose any specific restrictions on it.

[0095] The second aspect of this application also provides a display device including the display panel of any of the above embodiments. Since the display device provided in the second aspect of this application includes the display panel of any of the above embodiments, it possesses the beneficial effects of the display panel of any of the above embodiments, which will not be elaborated further here.

[0096] The display devices in this application include, but are not limited to, mobile phones, personal digital assistants (PDAs), tablet computers, e-books, televisions, access control systems, smart landline phones, control consoles, and other devices with display functions.

[0097] The embodiments described above are not exhaustive, nor do they limit the invention to the specific embodiments described. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to effectively utilize this application and its modifications. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A display panel, characterized in that, include: substrate; A contact electrode is located on one side of the substrate, and the contact electrode includes a first pad and a second pad spaced apart along a first direction; A light-emitting device is located on the side of the contact electrode away from the substrate. The light-emitting device has a first electrode and a second electrode. The first electrode is electrically connected to the first pad, and the second electrode is electrically connected to the second pad. An insulating layer is located between the substrate and the light-emitting device and includes an insulating portion, at least a portion of which is located between the first pad and the second pad, wherein the orthographic projection of at least one of the first pad and the second pad on the substrate overlaps with the orthographic projection of the insulating portion on the substrate.

2. The display panel according to claim 1, characterized in that, The orthographic projection of one of the first pads and the second pads on the substrate overlaps with the orthographic projection of the insulating portion on the substrate.

3. The display panel according to claim 2, characterized in that, The first pad includes a first top surface, a first bottom surface, and a first side surface connected between the first top surface and the first bottom surface, which are disposed opposite to each other in the thickness direction of the display panel. The first top surface is located on the side of the first bottom surface away from the substrate. The orthographic projection of the first side surface of the first pad facing the second pad on the substrate overlaps with the orthographic projection of the insulating portion on the substrate. Preferably, the orthographic projection of the first top surface onto the substrate overlaps with the orthographic projection of the insulating portion onto the substrate; Preferably, the orthographic projection of the second pad on the substrate is located outside the orthographic projection of the insulating portion on the substrate.

4. The display panel according to claim 3, characterized in that, The insulating portion has a first end in the first direction that is away from the second pad. The orthographic projection of the first end on the substrate overlaps with the orthographic projection of the first pad on the substrate. The minimum distance between the first end and the second pad in the first direction is 0.5 μm to 2.5 μm.

5. The display panel according to claim 2, characterized in that, The first pad's orthographic projection on the substrate overlaps with the insulating portion's orthographic projection on the substrate to form a first overlapping region, the first overlapping region having a size of 1.5 μm to 3.5 μm in the first direction.

6. The display panel according to claim 1, characterized in that, The orthographic projections of the first pad and the second pad on the substrate overlap with the orthographic projection of the insulating portion on the substrate.

7. The display panel according to claim 6, characterized in that, The second pad includes a second top surface, a second bottom surface, and a second side surface connected between the second top surface and the second bottom surface, which are disposed opposite each other in the thickness direction of the display panel. The second top surface is located on the side of the second bottom surface away from the substrate. The orthographic projection of the second side surface of the second pad toward the first pad onto the substrate overlaps with the orthographic projection of the insulating portion onto the substrate.

8. The display panel according to claim 7, characterized in that, The insulating portion has a first end and a second end disposed opposite to each other in the first direction. The orthographic projection of the first end on the substrate overlaps with the orthographic projection of the first pad on the substrate, and the orthographic projection of the second end on the substrate overlaps with the orthographic projection of the second pad on the substrate. In the first direction, the distance between the first end and the second end is 0.5μm to 4μm. Preferably, in the first direction, the distance between the first end and the second end is 0.5 μm to 2.5 μm.

9. The display panel according to claim 6, characterized in that, The second pad's orthographic projection on the substrate overlaps with the insulating portion's orthographic projection on the substrate to form a second overlapping region, the second overlapping region having a size of 1.5μm to 3.5μm in the first direction.

10. A display device, characterized in that, Includes the display panel as described in any one of claims 1-9.

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