Display panel and display device

Abstract

This application provides a display panel and a display device. An embodiment of this application provides a display panel including an array substrate, light-emitting elements, and a light-shielding layer. The light-emitting elements are located on one side of the array substrate and electrically connected to it. Multiple light-emitting elements include a first light-emitting element and a second light-emitting element of different colors. The first light-emitting element has a first light-emitting surface facing away from the array substrate, and the second light-emitting element has a second light-emitting surface facing away from the array substrate. The light-shielding layer is disposed on one side of the array substrate. In a direction parallel to the plane of the array substrate, the light-shielding layer includes a first light-shielding portion adjacent to the first light-emitting element and a second light-shielding portion adjacent to the second light-emitting element. In the thickness direction of the array substrate, the distance between the plane containing the first light-emitting surface and the first light-shielding portion is greater than the distance between the second light-emitting surface and the second light-shielding portion.

Description

[0001] This application is a divisional application of application number 202411168540.0, filed on August 23, 2024, entitled "Display Panel and Display Device". Technical Field

[0002] This application relates to the field of display device technology, and more particularly to a display panel and display device. Background Technology

[0003] With the development of display technology, display products are showing a diversified development trend. Micro-light-emitting elements (LEDs), with their advantages of high brightness, high contrast, and high reliability, are increasingly used in display products. However, when displaying images using micro-light-emitting elements, the presence of ambient light and the high reflectivity of the LEDs and the metal traces within the backplate lead to a decrease in contrast, affecting the user's viewing experience.

[0004] In related technologies, in order to reduce the reflection of light by metal traces, light-shielding materials are generally used to block the metal traces. However, due to the problem of light-shielding materials remaining on the light-emitting surface of the light-emitting element, the light-emitting efficiency of the light-emitting element is affected. Summary of the Invention

[0005] This application provides a display panel and a display device that can improve the reliability of the display panel.

[0006] In a first aspect, embodiments of this application provide a display panel, which includes an array substrate, light-emitting elements, and a light-shielding layer. The light-emitting elements are located on one side of the array substrate and electrically connected to the array substrate. The plurality of light-emitting elements include a first light-emitting element and a second light-emitting element with different colors. The first light-emitting element has a first light-emitting surface facing away from the array substrate, and the second light-emitting element has a second light-emitting surface facing away from the array substrate.

[0007] A light-shielding layer is disposed on one side of the array substrate. In a direction parallel to the plane of the array substrate, the light-shielding layer includes a first light-shielding portion adjacent to the first light-emitting element and a second light-shielding portion adjacent to the second light-emitting element. Specifically, in the thickness direction of the array substrate, the distance between the plane containing the first light-emitting surface and the first light-shielding portion is greater than the distance between the second light-emitting surface and the second light-shielding portion.

[0008] Secondly, embodiments of this application provide a display panel, which includes an array substrate, light-emitting elements, and a light-shielding layer. The light-emitting elements are located on one side of the array substrate and electrically connected to the array substrate. The plurality of light-emitting elements includes a first light-emitting element, a second light-emitting element, and a third light-emitting element disposed adjacent to each other. The light-shielding layer is disposed on one side of the array substrate and is at least partially located between adjacent light-emitting elements. The distance between adjacent first and second light-emitting elements is greater than the distance between adjacent second and third light-emitting elements.

[0009] Thirdly, embodiments of this application provide a display device, which includes the display panel in any of the foregoing embodiments.

[0010] This application provides a display panel and a display device. The structure of the display panel at the first light-emitting element is adjusted so that the light-shielding material remaining on the first light-emitting surface can flow more easily downward to the periphery of the first light-emitting element, thereby reducing the residual light-shielding material at the first light-emitting surface. This helps to improve the light emission efficiency of the first light-emitting element, reduce the brightness difference between the first light-emitting element and other light-emitting elements, and help to improve display uniformity and display effect. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a partial top view of a display panel provided in an embodiment of this application; Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure at point AA; Figure 3 This is a partial cross-sectional structural diagram of a display panel provided in an embodiment of this application; Figure 4 This is a partial cross-sectional structural diagram of another display panel provided in an embodiment of this application; Figure 5 This is a partial cross-sectional structural diagram of another display panel provided in an embodiment of this application; Figure 6 This is a partial cross-sectional structural diagram of another display panel provided in an embodiment of this application; Figure 7 This is a partial cross-sectional structural diagram of another display panel provided in an embodiment of this application; Figure 8 This is a partial cross-sectional structural diagram of another display panel provided in an embodiment of this application; Figure 9 This is a partial cross-sectional structural diagram of another display panel provided in an embodiment of this application; Figure 10 This is a partial top view of another display panel provided in an embodiment of this application; Figure 11 This is a partial top view of another display panel provided in an embodiment of this application; Figure 12 This is a partial cross-sectional structural diagram of another display panel provided in an embodiment of this application; Figure 13 This is a partial top view of another display panel provided in an embodiment of this application; Figure 14 This is a partial top view of another display panel provided in an embodiment of this application; Figure 15 This is a top view of another display panel provided in an embodiment of this application; Figure 16 This is a partial cross-sectional structural diagram of another display panel provided in an embodiment of this application; Figure 17 This is a partial cross-sectional structural diagram of another display panel provided in an embodiment of this application; Figure 18 This is a partial cross-sectional structural diagram of another display panel provided in an embodiment of this application; Figure 19 This is a schematic diagram of the structure of a display device provided in an embodiment of this application.

[0013] Marker explanation: 100. Display panel; 200. Display device; 10. Array substrate; 11. Protrusion; 12. Recess; 13. First pad; 14. Second pad; 15. First signal line; 20. Light-emitting element; 21. First light-emitting element; 211. First epitaxial structure; 212. First electrode structure; 213. First light-emitting body; 214. First light-transmitting part; 22. Second light-emitting element; 221. Second epitaxial structure; 222. Second electrode structure; 223. Second light-emitting body; 224. Second light-transmitting part; 23. Third light-emitting element; 30. Light-shielding layer; 31. First light-shielding part; 32. Second light-shielding part; 33. Third light-shielding part; 34. First light-shielding material part; 35. Second light-shielding material part; 50. Transparent adhesive layer; 60. Inorganic layer; F. Repeating unit; A1, Zone 1; A2, Zone 2; A3, First Central Zone; A4, First Edge Zone; A5, Second Central Zone; A6, Second Edge Zone; A7, Transparent Zone; O1, Center of Zone 1; O2, Center of Zone 2; O3, Center of Display Panel; M1, first surface; M2, second surface C1, first light-emitting surface; C2, second light-emitting surface; C3, third light-emitting surface; X, first direction; Y, second direction; Z, thickness direction of the array substrate. Detailed Implementation

[0014] The features and exemplary embodiments of various aspects of this application will be described in detail below. 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 intended to explain this application and not to limit it. 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.

[0015] 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.

[0016] In related technologies, the fabrication process of the light-shielding material generally takes place after the light-emitting element is transferred to the driving substrate. Specifically, the light-emitting element is first transferred to the driving substrate, and then a full-layer light-shielding layer is fabricated on the surface of the driving substrate facing the light-emitting element. The light-shielding layer can cover the metal traces in the driving substrate to reduce the reflection of light by the metal traces. However, some material in the light-shielding layer usually remains on the light-emitting surface of the light-emitting element, thereby affecting the light-emitting efficiency of the light-emitting element.

[0017] Regarding the above issues, firstly, please refer to [link / reference needed]. Figures 1 to 3This application provides a display panel 100, which includes an array substrate 10, light-emitting elements 20, and a light-shielding layer 30. The light-emitting elements 20 are located on one side of the array substrate 10 and electrically connected to the array substrate 10. The plurality of light-emitting elements 20 include a first light-emitting element 21 and a second light-emitting element 22 with different colors. The first light-emitting element 21 has a first light-emitting surface C1 facing away from the array substrate 10, and the second light-emitting element 22 has a second light-emitting surface C2 facing away from the array substrate 10.

[0018] A light-shielding layer 30 is disposed on one side of the array substrate 10. In a direction parallel to the plane of the array substrate 10, the light-shielding layer 30 includes a first light-shielding portion 31 disposed adjacent to the first light-emitting element 21 and a second light-shielding portion 32 disposed adjacent to the second light-emitting element 22. Specifically, in the thickness direction Z of the array substrate 10, the distance D1 between the plane containing the first light-emitting surface C1 and the first light-shielding portion 31 is greater than the distance D2 between the second light-emitting surface C2 and the second light-shielding portion 32.

[0019] The array substrate 10 is a module structure in the display panel 100 used to drive and control the light-emitting elements 20 to achieve light emission and display. The array substrate 10 may include a substrate and a driving layer disposed on one side of the substrate. The substrate may be a rigid structure or a flexible structure, which is not limited in this embodiment. The specific structure of the driving layer can be set according to actual needs. For example, the driving layer may include a conductor layer, a semiconductor layer and an insulating layer located between two adjacent conductor layers or between an adjacent conductor layer and a semiconductor layer.

[0020] The light-emitting element 20 can be a micro light-emitting diode (Micro LEL) or a sub-millimeter light-emitting diode (Mini LEL), etc. The light-emitting element 20 is disposed on one side of the array substrate 10. The light-emitting element 20 can have various structural forms; for example, it can be a flip-chip, a standard-mount chip, or a vertical chip. This embodiment does not limit the specific structural forms described herein.

[0021] The plurality of light-emitting elements 20 includes a first light-emitting element 21 and a second light-emitting element 22 of different colors. In other words, the first light-emitting element 21 and the second light-emitting element 22 are used to emit light of different colors. The first light-emitting element 21 and the second light-emitting element 22 can be two light-emitting elements 20 arranged adjacently, that is, there may be no other light-emitting elements 20 between the closest first light-emitting element 21 and the second light-emitting element 22. Alternatively, the first light-emitting element 21 and the second light-emitting element 22 can also be two light-emitting elements 20 arranged non-adjacently, that is, there may be other light-emitting elements 20 between the closest first light-emitting element 21 and the second light-emitting element 22.

[0022] The first light-emitting element 21 has a first light-emitting surface C1, which is the light-emitting surface on the first light-emitting element 21. Exemplarily, the first light-emitting element 21 may include a first epitaxial structure 211, which is a multilayer crystalline film structure formed in the first light-emitting element 21 through a specific chemical or physical process. Based on this, the first light-emitting surface C1 can be the surface of the first epitaxial structure 211 facing away from the array substrate 10. Alternatively, when the first light-emitting element 21 also includes other auxiliary film structures located on the side of the first epitaxial structure 211 facing away from the array substrate 10, the first light-emitting surface C1 will be located on the side of the auxiliary film structure facing away from the array substrate 10 and spaced apart from the first epitaxial structure 211 in the thickness direction Z of the array substrate 10. The second light-emitting element 22 has a second light-emitting surface C2, which is similar to the first light-emitting surface C1, and will not be described again in this embodiment.

[0023] The light-shielding layer 30 is a film layer including a light-shielding material. The light-shielding layer 30 and the light-emitting element 20 are formed on the same side of the array substrate 10, and the light-shielding layer 30 is formed after the light-emitting element 20. That is, the light-emitting element 20 is transferred to the driving substrate first, and then the light-shielding layer 30 is formed. The light-shielding layer 30 includes a first light-shielding portion 31 and a second light-shielding portion 32. The first light-shielding portion 31 is the part of the light-shielding layer 30 located around the first light-emitting element 21 and can contact the side of the first light-emitting element 21. The second light-shielding portion 32 is the part of the light-shielding layer 30 located around the second light-emitting element 22 and can contact the side of the second light-emitting element 22.

[0024] The position of the first light-shielding part 31 relative to the first light-emitting element 21 can be the same as the position of the second light-shielding part 32 relative to the second light-emitting element 22, or they can be different. For example, if the first light-shielding part 31 is located on one side of the first light-emitting element 21 along the first direction X, the second light-shielding part 32 can be located on one side of the second light-emitting element 22 along the first direction X, or it can be located on one side of the second light-emitting element 22 along the second direction Y, wherein the first direction X and the second direction Y are both parallel to the plane of the array substrate 10 and intersect each other. Further, the first light-emitting element 21 and the second light-emitting element 22 each have opposite sides in the first direction X. Based on this, when the second light-shielding part 32 is located on one side of the second light-emitting element 22 along the first direction X, the first light-shielding part 31 and the second light-shielding part 32 can be located on the same side of the first light-emitting element 21 and the second light-emitting element 22, or they can be located on different sides.

[0025] Furthermore, the relationship between the first light-shielding part 31 and the second light-shielding part 32 is not limited in this embodiment. For example, the first light-shielding part 31 may be spaced apart from the second light-shielding part 32, or the first light-shielding part 31 and the second light-shielding part 32 may be integrally connected. Figure 1 and Figure 2 The diagram illustrates three light-emitting elements 30 with different emitting colors using labels, and shows the light-shielding parts corresponding to these three light-emitting elements 30 using dashed boxes.

[0026] The method of forming the light-shielding layer 30 is not limited in this embodiment. Optionally, the light-shielding layer 30 can be thermoplastically formed. Specifically, the light-shielding layer 30 includes a thermoplastic light-shielding material. During the preparation process, if the temperature of the light-shielding layer 30 is greater than or equal to the melting point of the thermoplastic light-shielding material, the light-shielding layer 30 will melt into a liquid state, and the liquid thermoplastic light-shielding material will flow and deform on the light-emitting element 20 and between adjacent light-emitting elements 20. If the temperature of the light-shielding layer 30 is less than the melting point of the thermoplastic light-shielding material, the light-shielding layer 30 will solidify upon cooling, and most of the solid thermoplastic light-shielding material will fill the spaces between adjacent light-emitting elements 20 to meet the normal operation requirements of the display panel 100. During the thermoplastic forming process, some material corresponding to the light-shielding layer 30 will remain on the light-emitting surface of the light-emitting element 20, thereby reducing the light-emitting efficiency of the corresponding light-emitting element 20.

[0027] Alternatively, in another embodiment, the light-shielding layer 30 can also be formed by printing a black light-shielding material. However, when printing the black light-shielding material, the material may diffuse along the side of the light-emitting element 20 to the light-emitting surface of the element, which can also easily lead to a decrease in the light-emitting efficiency of the element 20.

[0028] Based on this, whether the light-shielding layer 30 is formed by thermoforming or printing, it is easy for light-shielding material to remain on the first light-emitting surface C1 corresponding to the first light-emitting element 21, thereby reducing the light emission efficiency of the first light-emitting element 21. In view of this, the structure of the display panel 100 at the first light-emitting element 21 has been adjusted in this embodiment to reduce the residue of light-shielding material on the first light-emitting element 21.

[0029] Specifically, in the thickness direction Z of the array substrate 10, the distance D1 between the plane containing the first light-emitting surface C1 and the first light-shielding part 31 is greater than the distance D2 between the second light-emitting surface C2 and the second light-shielding part 32. Considering that the upper surface of the first light-shielding part 31 may not be a flat surface, the "distance between the plane containing the first light-emitting surface C1 and the first light-shielding part 31" mentioned here refers to the average distance between the plane containing the first light-emitting surface C1 and the upper surface of the first light-shielding part 31. The distance between the second light-emitting surface C2 and the second light-shielding part 32 is similar, and will not be described again in this embodiment.

[0030] The height difference between the first light-emitting surface C1 and the first light-shielding part 31 is greater than the height difference between the second light-emitting surface C2 and the second light-shielding part 32. Generally, the greater the height difference, the easier it is for the fluid to flow downwards. Therefore, during the preparation of the light-shielding layer 30, since there is a relatively large height difference between the first light-emitting surface C1 and the first light-shielding part 31, the light-shielding material remaining on the first light-emitting surface C1 is more likely to flow downwards to the periphery of the first light-emitting element 21, thereby helping to reduce the impact of the light-shielding material on the light-emitting efficiency of the first light-emitting element 21.

[0031] It should be noted that a large height difference can be achieved between the first light-emitting surface C1 and the first light-shielding part 31 in various ways. For example, the first light-emitting element 21 can be heightened during its fabrication process, so that the size of the first light-emitting element 21 is larger than the size of the second light-emitting element 22 in the thickness direction Z of the array substrate 10. In this way, the plane containing the first light-emitting surface C1 can be located on the side of the plane containing the second light-emitting surface C2 away from the array substrate 10, thereby satisfying the requirement for a large height difference between the first light-emitting surface C1 and the first light-shielding part 31.

[0032] Alternatively, in other embodiments, the structure of the array substrate 10 at different locations can be differentiated. For example, the structure of the array substrate 10 at the first light-emitting element 21 can be thickened so that the plane containing the first light-emitting surface C1 is raised to the side of the plane containing the second light-emitting surface C2 away from the array substrate 10. Alternatively, the structure of the array substrate 10 around the first light-emitting element 21 can be recessed so that the plane containing the upper surface of the first light-shielding part 31 is located on the side of the plane containing the upper surface of the second light-shielding part 32 closer to the array substrate 10. This can also satisfy the need for a larger height difference between the first light-emitting surface C1 and the first light-shielding part 31.

[0033] In summary, in this embodiment, the structure of the display panel 100 at the first light-emitting element 21 is adjusted. The height difference between the first light-emitting surface C1 and the first light-shielding part 31 is set to be greater than the height difference between the second light-emitting surface C2 and the second light-shielding part 32. This makes it easier for the light-shielding material remaining on the first light-emitting surface C1 to flow downward to the periphery of the first light-emitting element 21, thereby reducing the residual light-shielding material at the first light-emitting surface C1. This helps to improve the light emission efficiency of the first light-emitting element 21, reduce the brightness difference between the first light-emitting element 21 and the second light-emitting element 22, and help to improve display uniformity and display effect.

[0034] The specific emission colors of the first light-emitting element 21 and the second light-emitting element 22 are not limited in this embodiment. Optionally, given the same size of residual light-shielding material, the adverse impact on the light emission efficiency of the first light-emitting element 21 is greater than that of the second light-emitting element 22. In other words, the light emission efficiency of the first light-emitting element 21 is more easily affected by the light-shielding material than that of the second light-emitting element 22, thus causing uneven display. Furthermore, under the blocking effect of the same size light-shielding material, the light emission efficiency of the first light-emitting element 21 is less than that of the second light-emitting element 22. In this case, this design in the embodiment of this application helps to reduce the risk of uneven display caused by the difference in light emission efficiency between the first light-emitting element 21 and the second light-emitting element 22, and improves the display accuracy and effect of the display panel 100.

[0035] Furthermore, this application embodiment does not impose any restrictions on whether or not light-shielding material remains on the first light-emitting surface C1. For example, since there is a significant height difference between the first light-emitting surface C1 and the first light-shielding portion 31, all the light-shielding material on the first light-emitting surface C1 may flow to the periphery of the first light-emitting element 21, meaning that no light-shielding material may remain on the first light-emitting surface C1, or a small amount of light-shielding material may remain on the first light-emitting surface C1. Further, this application embodiment does not impose any restrictions on whether or not light-shielding material remains on the second light-emitting surface C2.

[0036] In some embodiments, such as Figures 1 to 3 As shown, the plane containing the first light-emitting surface C1 is located on the side of the plane containing the second light-emitting surface C2 that is away from the array substrate 10.

[0037] As can be seen from the foregoing, the position of the first light-emitting surface C1 can be adjusted in several ways. For example, the structure of the first light-emitting element 21 can be adjusted so that, in the thickness direction Z of the array substrate 10, the size of the first light-emitting element 21 is larger than the size of the second light-emitting element 22. In this way, the plane containing the first light-emitting surface C1 can be located on the side of the plane containing the second light-emitting surface C2 away from the array substrate 10. Furthermore, a new film layer structure can be added to the first light-emitting element 21 to meet the size requirements of the first light-emitting element 21, or the existing film layer structure in the first light-emitting element 21 can be thickened to meet the size requirements of the first light-emitting element 21.

[0038] Alternatively, the structure of the array substrate 10 at the first light-emitting element 21 can be thickened to raise the plane containing the first light-emitting surface C1 to the side of the plane containing the second light-emitting surface C2 away from the array substrate 10. Further, a new film structure can be added to the array substrate 10, overlapping the first light-emitting element 21 in the thickness direction Z of the array substrate 10 to meet the need for increasing the height of the first light-emitting surface C1. Alternatively, the existing film structure in the array substrate 10 can be thickened, with the thickened position corresponding to the first light-emitting element 21, thus also meeting the need for increasing the height of the first light-emitting surface C1.

[0039] In this embodiment, the plane where the first light-emitting surface C1 is located is not the same as the plane where the second light-emitting surface C2 is located. By setting the plane where the first light-emitting surface C1 is located on the side of the plane where the second light-emitting surface C2 is located away from the array substrate 10, it helps to make the height difference between the first light-emitting surface C1 and the first light-shielding part 31 greater than the height difference between the second light-emitting surface C2 and the second light-shielding part 32. This increases the probability of the light-shielding material at the first light-emitting surface C1 flowing downward, reduces the brightness difference between the first light-emitting element 21 and the second light-emitting element 22, and helps to improve display uniformity and display effect.

[0040] In some embodiments, please refer to Figure 3 and Figure 4The first light-emitting element 21 includes a first epitaxial structure 211 and a first electrode structure 212, and the second light-emitting element 22 includes a second epitaxial structure 221 and a second electrode structure 222. Specifically, in the thickness direction Z of the array substrate 10, the size of the first epitaxial structure 211 is larger than the size of the second epitaxial structure 221; and / or, in the thickness direction Z of the array substrate 10, the size of the first electrode structure 212 is larger than the size of the second electrode structure 222.

[0041] The first electrode structure 212 and the first epitaxial structure 211 are important components of the first light-emitting element 21. The first epitaxial structure 211 can emit light of a specific color, and the first electrode structure 212 is used to receive electrical signals to drive the first epitaxial structure 211 to achieve the light-emitting function. The first epitaxial structure 211 includes multiple stacked film layers. The specific composition of the film layers in the first epitaxial structure 211 is not limited in this embodiment. Optionally, the first epitaxial structure 211 includes a first semiconductor layer, a light-emitting layer, and a second semiconductor layer stacked together. Further, the first semiconductor layer may include, for example, an N-type semiconductor layer, the light-emitting layer may include, for example, a multiple quantum well structure, and the second semiconductor layer may include, for example, a P-type semiconductor layer, but these are not limiting.

[0042] Considering that the first light-emitting element 21 can have various structural forms, the first epitaxial structure 211 and the first electrode structure 212 can have various positional relationships. Specifically, the first light-emitting element 21 can include horizontal chips and vertical chips. Depending on the structure, horizontal chips further include flip-chip chips and upright chips. When the first light-emitting element 21 is a flip-chip, the first epitaxial structure 211 can be located on the side of the first electrode facing away from the array substrate 10. When the first light-emitting element 21 is an upright chip, the first epitaxial structure 211 can be located on the side of the first electrode facing the array substrate 10. When the first light-emitting element 21 is a vertical chip, the two electrode portions of the first electrode are respectively disposed on both sides of the first epitaxial structure 211 along the thickness direction Z of the array substrate 10. The second electrode structure 222 and the second epitaxial structure 221 in the second light-emitting element 22 are similarly related, and the embodiments of this application are not limited. The figure shows the case when both the first light-emitting element 21 and the second light-emitting element 22 are flip-chips.

[0043] Based on this, in order to meet the positional requirements of the plane containing the first light-emitting surface C1 and the plane containing the second light-emitting surface C2, the embodiments of this application can adjust the size of at least one of the first epitaxial structure 211 and the first electrode structure 212. Specifically, as Figure 3As shown, by adding a new film structure in the first epitaxial structure 211 or increasing the thickness of some of the film structures already present in the first epitaxial structure 211, the size of the first epitaxial structure 211 is larger than the size of the second epitaxial structure 221 in the thickness direction Z of the array substrate 10, thereby satisfying the requirement that the plane where the first light-emitting surface C1 is located is on the side away from the array substrate 10 where the plane where the second light-emitting surface C2 is located.

[0044] Or such as Figure 4 As shown, the size of the first electrode structure 212 can also be increased. The size of the first electrode structure 212 in the thickness direction Z of the array substrate 10 can be set to be larger than the size of the second electrode structure 222. By increasing the size of the first electrode structure 212, the plane where the first light-emitting surface C1 is located can be raised. This can also satisfy the requirement that the plane where the first light-emitting surface C1 is located is on the side away from the array substrate 10 where the plane where the second light-emitting surface C2 is located.

[0045] In summary, in the embodiments of this application, at least one of the first epitaxial structure 211 and the first electrode structure 212 can be selectively enlarged in the thickness direction Z of the array substrate 10, so that the plane where the first light-emitting surface C1 is located is on the side away from the array substrate 10 where the plane where the second light-emitting surface C2 is located. In this way, without changing the array substrate 10, there can be a large height difference between the first light-emitting surface C1 and the first light-shielding part 31, which has strong practicality and flexibility.

[0046] It should be noted that a light-shielding material may or may not be present between the two electrodes of the first electrode structure 212; this embodiment does not impose any restrictions on this. Similarly, a light-shielding material may or may not be present between the two electrodes of the second electrode structure 222. Figure 3 The diagram shows a case where there is a light-shielding material between the two electrodes of the first electrode structure 212. Figure 4 The diagram shows the case where there is no light-shielding material between the two electrodes of the first electrode structure 212.

[0047] In some embodiments, please refer to Figure 5 The first light-emitting element 21 includes a first light-emitting body 213 and a first light-transmitting portion 214 located on the side of the first light-emitting body 213 facing away from the array substrate 10.

[0048] The first light-emitting body 213 is a core component of the first light-emitting element 21 used to realize the light-emitting function. For example, the first light-emitting body 213 may include a first epitaxial structure 211 and a first electrode structure 212. The first light-transmitting part 214 is a film layer structure made of light-transmitting material in the first light-emitting element 21 and located on the light-emitting side of the first light-emitting body 213. The first light-transmitting part 214 can cover and protect the first light-emitting body 213, reducing the risk of damage to the first light-emitting body 213. Wherein, due to the presence of the first light-transmitting part 214, the first light-emitting surface C1 is not a surface on the first epitaxial structure 211, but a surface on the side of the first light-transmitting part 214 facing away from the array substrate 10, and the first surface M1 is spaced apart from the first epitaxial structure 211.

[0049] The specific materials and shapes of the first light-transmitting portion 214 are not limited in the embodiments of this application. Optionally, the surface roughness of the first light-emitting surface C1 of the first light-transmitting portion 214 facing away from the array substrate 10 is less than that of the surface of the first epitaxial structure 211 facing away from the array substrate 10. That is, the first light-emitting surface C1 on the first light-transmitting portion 214 is smoother than the surface of the first epitaxial structure 211. This helps to further increase the probability of the light-shielding material on the first light-emitting surface C1 flowing to the periphery of the first light-emitting element 21, thereby improving the light extraction efficiency of the first light-emitting element 21.

[0050] Alternatively, the refractive index of the first light-transmitting portion 214 is less than the refractive index of the first epitaxial structure 211. This reduces the probability of total internal reflection at the interface between the first light-transmitting portion 214 and the first light-emitting body 213, thereby improving the light extraction efficiency.

[0051] Furthermore, the method of fabricating the first light-transmitting portion 214 is not limited in the embodiments of this application. Exemplarily, the first light-transmitting portion 214 can be fabricated together with the first light-emitting body 213. Alternatively, the first light-emitting body 213 can be transferred to the array substrate 10 first, and then the first light-transmitting portion 214 can be fabricated on the first light-emitting body 213, followed by the formation of the light-shielding layer 30. Alternatively, it can be fabricated during the transfer process, for example, by retaining the transfer adhesive.

[0052] In this embodiment, the first light-transmitting portion 214 not only protects the first light-emitting body 213, but also adjusts the light emission effect of the first light-emitting element 21 by adjusting the material composition of the first light-transmitting portion 214, thus possessing strong practicality. Furthermore, the presence of the first light-transmitting portion 214 can also increase the height of the first light-emitting surface C1, thereby increasing the height difference between the first light-emitting surface C1 and the first light-shielding portion 31, increasing the probability of the light-shielding material at the first light-emitting surface C1 flowing to the periphery of the first light-emitting element 21, improving the light emission efficiency of the first light-emitting element 21, reducing the brightness difference between the first light-emitting element 21 and the second light-emitting element 22, and helping to improve display uniformity and display effect.

[0053] It should be noted that the second light-emitting element 22 may or may not have a light-transmitting part, and the embodiments of this application do not impose any restrictions on this.

[0054] In some embodiments, please refer to Figure 6 The second light-emitting element 22 includes a second light-emitting body 223 and a second light-transmitting portion 224 located on the side of the second light-emitting body 223 away from the array substrate 10. In the thickness direction Z of the array substrate 10, the size of the first light-transmitting portion 214 is larger than the size of the second light-transmitting portion 224.

[0055] The relationship between the second light-transmitting part 224 and the second light-emitting body 223, as well as the function and material composition of the second light-transmitting part 224, can be found in the description of the first light-transmitting part 214 and the first light-emitting body 213 in the foregoing embodiments. This application will not repeat the description in the embodiments.

[0056] In this embodiment of the application, for the case where the first light-emitting element 21 includes a first light-transmitting portion 214 and the second light-emitting element 22 includes a second light-transmitting portion 224, by differentiating the dimensions of the first light-transmitting portion 214 and the second light-transmitting portion 224, it is possible to make the plane where the first light-emitting surface C1 is located on the side away from the array substrate 10 without changing the first light-emitting body 213 and the second light-emitting body 223. Under the premise of increasing the height difference between the first light-emitting surface C1 and the first light-shielding portion 31, the fabrication and design difficulty of the first light-emitting body 213 and the second light-emitting body 223 is reduced, which helps to improve the fabrication yield of the first light-emitting element 21 and the second light-emitting element 22.

[0057] In some embodiments, such as Figures 3 to 6As shown, the first light-emitting element 21 has a dimension of H1 in the thickness direction Z of the array substrate 10, and the second light-emitting element 22 has a dimension of H2 in the thickness direction Z of the array substrate 10. H1 and H2 satisfy the condition: 1.05 ≤ H1 / H2 ≤ 1.5. Optionally, H1 / H2 is equal to one of 1.05, 1.1, 1.2, 1.3, 1.4, and 1.5.

[0058] In this embodiment, by setting the size H1 of the first light-emitting element 21 to be larger than the size H2 of the second light-emitting element 22, the plane containing the first light-emitting surface C1 is located on the side of the plane containing the second light-emitting surface C2 that is away from the array substrate 10. Furthermore, this embodiment sets H1 / H2 to be no less than 1.05, thereby increasing the height difference between the first light-emitting surface C1 and the first light-shielding portion 31, thus reducing the residual light-shielding material at the first light-emitting surface C1 and improving the light extraction efficiency corresponding to the first light-emitting element 21. Simultaneously, setting H1 / H2 to be no greater than 1.5 reduces the adverse effects on the overall thickness of the display panel 100 caused by an excessively large size H1 of the first light-emitting element 21, contributing to a thinner and lighter design.

[0059] In some embodiments, please refer to Figure 7 and Figure 8 The array substrate 10 has a first surface M1 and a protrusion 11 protruding from the first surface M1. A light-emitting element 20 is located on one side of the first surface M1 and along the thickness direction Z of the array substrate 10. The first light-emitting element 21 overlaps with the protrusion 11. Alternatively, the array substrate 10 has a first surface M1 and a recess 12 recessed relative to the first surface M1. The light-emitting element 20 is located on one side of the first surface M1 and along the thickness direction Z of the array substrate 10. The second light-emitting element 22 overlaps with the recess 12.

[0060] The first surface M1 is a surface of the array substrate 10 along its thickness direction Z. Both the first light-emitting element 21 and the second light-emitting element 22 are located on one side of the first surface M1, and the light-shielding layer 30 is also located on one side of the first surface M1 and can be attached to it. Based on this, the height difference between the plane containing the first light-emitting surface C1 and the first surface M1 is often negatively correlated with the size of the light-shielding material remaining on the first light-emitting element 21. Similarly, the height difference between the plane containing the second light-emitting surface C2 and the first surface M1 is often negatively correlated with the size of the light-shielding material remaining on the second light-emitting element 22.

[0061] In view of this, such as Figure 7As shown, in this embodiment of the application, a protrusion 11 is formed that protrudes from the first surface M1 and corresponds to the first light-emitting element 21 by adding a new insulating layer or conductor layer or increasing the thickness of a specific insulating layer or conductor layer within the array substrate 10. The presence of the protrusion 11 can increase the height of the first light-emitting element 21, so that the plane where the first light-emitting surface C1 is located is on the side away from the array substrate 10 where the plane where the second light-emitting surface C2 is located. This can control the height difference between the plane where the first light-emitting surface C1 is located and the first surface M1 to be greater than the height difference between the plane where the second light-emitting surface C2 is located and the first surface M1. This allows the light-shielding material remaining on the first light-emitting surface C1 to flow more easily to the first surface M1, thereby improving the light-emitting efficiency of the first light-emitting element 21, reducing the brightness difference between the first light-emitting element 21 and the second light-emitting element 22, and helping to improve display uniformity and display effect.

[0062] Or such as Figure 8 As shown in the embodiment of this application, a portion of the structure of the second light-emitting element 22 can also be formed by removing a specific insulating layer or conductor layer or other film layer in the array substrate 10, thereby forming a recess 12 that is concave relative to the first surface M1 and corresponds to the second light-emitting element 22. The presence of the recess 12 can cause the second light-emitting element 22 to sink relative to the first light-emitting element 21. With this design, the height difference between the plane where the first light-emitting surface C1 is located and the first surface M1 can also be controlled to be greater than the height difference between the plane where the second light-emitting surface C2 is located and the first surface M1. This helps to reduce the brightness difference between the first light-emitting element 21 and the second light-emitting element 22, and improve the display uniformity and display effect.

[0063] It should be noted that, depending on the actual needs, the array substrate 10 may only have a protrusion 11 that protrudes relative to the first surface M1, or it may only have a recess 12 that is recessed relative to the first surface M1, or it may have both a recess 12 and a protrusion 11. This application embodiment does not limit this.

[0064] In some embodiments, please refer to Figure 9 The array substrate 10 includes pad structures and pixel circuits. The pad structures are electrically connected to the light-emitting element 20 and the pixel circuits, respectively. The multiple pad structures include a first pad 13 electrically connected to the first light-emitting element 21 and a second pad 14 electrically connected to the second light-emitting element 22. Along the thickness direction Z of the array substrate 10, the first pad 13 overlaps with the first light-emitting element 21, and the second pad 14 overlaps with the second light-emitting element 22. The size of the first pad 13 is larger than the size of the second pad 14.

[0065] A pixel circuit is a circuit structure used to drive and control whether the light-emitting element 20 emits light. A pixel circuit may include a storage capacitor and multiple thin-film transistors. The pixel circuit can have various forms, and this application embodiment does not limit this. Optionally, the pixel circuit can have a 7T1C structure, meaning a single pixel circuit includes seven thin-film transistors and one storage capacitor, or the pixel circuit can also have an 8T1C structure, etc.

[0066] The pad structure is disposed on the first surface M1 and used for welding and fixing to the electrode structure on the light-emitting element 20. The first pad 13 structure is electrically connected to the first light-emitting element 21. The first pad 13 structure may include two spaced and insulated pads. The two pads are respectively connected and fixed to the two electrodes in the first electrode structure 212 and are used to realize the electrical connection between the first light-emitting element 21 and the corresponding pixel circuit. The second pad 14 structure is electrically connected to the second light-emitting element 22. The composition of the second pad 14 structure is similar to that of the first pad 13 structure, and will not be described again in the embodiments of this application.

[0067] Furthermore, in this embodiment, the size of the first pad 13 structure is adjusted so that the size of the first pad 13 structure is larger than the size of the second pad 14 structure in the thickness direction Z of the array substrate 10. In this way, the first light-emitting element 21 is raised by the first pad 13 structure, so that the plane where the first light-emitting surface C1 is located is on the side away from the array substrate 10 where the plane where the second light-emitting surface C2 is located. This helps to realize the downward flow of the light-shielding material on the first light-emitting surface C1 during the preparation of the light-shielding layer 30, thereby improving the light-emitting efficiency of the first light-emitting element 21, reducing the brightness difference between the first light-emitting element 21 and the second light-emitting element 22, and improving the display uniformity and display effect.

[0068] In some embodiments, please refer to Figure 1 , Figure 2 , Figure 10 as well as Figure 11 The first light-emitting element 21 and the second light-emitting element 22 are arranged adjacent to each other, and the first light-shielding part 31 and the second light-shielding part 32 are both located between the adjacent first light-emitting element 21 and the second light-emitting element 22; or, the first light-shielding part 31 is located on the side of the first light-emitting element 21 away from the second light-emitting element 22; or, the second light-shielding part 32 is located on the side of the second light-emitting element 22 away from the first light-emitting element 21; or, the first light-shielding part 31 is located on one side of the first light-emitting element 21 along the first direction X, and the second light-shielding part 32 is located on one side of the second light-emitting element 22 along the second direction Y, and the first direction X and the second direction Y are both parallel to the plane of the array substrate 10 and intersect each other.

[0069] The first light-emitting element 21 and the second light-emitting element 22 can be two adjacent light-emitting elements 20. Based on this, the first light-shielding part 31 and the second light-shielding part 32 can have various positional relationships. Specifically, for example... Figure 10 As shown, the first light-shielding part 31 and the second light-shielding part 32 can both be located between the first light-emitting element 21 and the second light-emitting element 22. In this case, the first light-shielding part 31 and the second light-shielding part 32 can be connected and integrally disposed, and the surface of the first light-shielding part 31 facing away from the array substrate 10 can be located on the same surface as the surface of the second light-shielding part 32 facing away from the array substrate 10. Based on this, in order to make the height difference between the first light-emitting surface C1 and the first light-shielding part 31 greater than the height difference between the second light-emitting surface C2 and the second light-shielding part 32, the plane where the first light-emitting surface C1 is located needs to be set to be located on the side of the plane where the second light-emitting surface C2 is located facing away from the array substrate 10.

[0070] Or such as Figure 1 As shown, the first light-shielding part 31 can also be located on the side of the first light-emitting element 21 away from the second light-emitting element 22. In this case, regardless of whether the second light-shielding part 32 is located between the first light-emitting element 21 and the second light-emitting element 22, or on the side of the second light-emitting element 22 away from the first light-emitting element 21, the second light-shielding part 32 is spaced apart from the first light-shielding part 31. Based on this, in order to make the height difference between the first light-emitting surface C1 and the first light-shielding part 31 greater than the height difference between the second light-emitting surface C2 and the second light-shielding part 32, in addition to setting the plane where the first light-emitting surface C1 is located on the side of the plane where the second light-emitting surface C2 is located away from the array substrate 10, the array substrate 10 can also be recessed at the first light-shielding part 31, so that the upper surface of the first light-shielding part 31 is located on the side of the upper surface of the second light-shielding part 32 closer to the array substrate 10.

[0071] Or such as Figure 1 As shown, the second light-shielding part 32 can also be located on the side of the second light-emitting element 22 away from the first light-emitting element 21. This situation is similar to the above, and will not be described again in the embodiments of this application.

[0072] Or such as Figure 11As shown, the first light-shielding part 31 can also be located on one side of the first light-emitting element 21 along the first direction X, and the second light-shielding part 32 can be located on one side of the second light-emitting element 22 along the second direction Y. In other words, the first light-shielding part 31 and the second light-shielding part 32 are respectively arranged on one side of the first light-emitting element 21 and the second light-emitting element 22 along different directions. At this time, the first light-shielding part 31 and the second light-shielding part 32 are also arranged at intervals from each other, and in addition to adjusting the plane where the first light-emitting surface C1 is located, the first light-shielding part 31 can also be adjusted to meet the requirement that the height difference between the first light-emitting surface C1 and the first light-shielding part 31 is greater than the height difference between the second light-emitting surface C2 and the second light-shielding part 32.

[0073] In some embodiments, such as Figure 1 and Figure 2 As shown, the plurality of light-emitting elements 20 also includes a third light-emitting element 23, which is a different color from both the first light-emitting element 21 and the second light-emitting element 22. The third light-emitting element 23 has a third light-emitting surface C3 facing away from the array substrate 10. The light-shielding part includes a third light-shielding part 33 disposed adjacent to the third light-emitting element 23. In the thickness direction Z of the array substrate 10, the distance between the plane containing the first light-emitting surface C1 and the first light-shielding part 31 is greater than the distance between the third light-emitting surface C3 and the third light-shielding part 33.

[0074] The third light-emitting element 23 is a light-emitting element 20 with a different light-emitting color from both the first light-emitting element 21 and the second light-emitting element 22. The positional relationship of the third light-emitting element 23 relative to the first and second light-emitting elements 21 is not limited in this embodiment. Optionally, the first light-emitting element 21, the second light-emitting element 22, and the third light-emitting element 23 can be arranged in the same direction, or the arrangement direction between the first light-emitting element 21 and the third light-emitting element 23 can be different from the arrangement direction between the first light-emitting element 21 and the second light-emitting element 22.

[0075] The third light-emitting element 23 has a third light-emitting surface C3, which is the light-emitting surface on the third light-emitting element 23. The light-shielding layer 30 includes a third light-shielding portion 33, which is the portion of the light-shielding layer 30 located around the third light-emitting element 23 and in contact with the side of the third light-emitting element 23. The embodiments of this application do not limit the relative positional relationship between the third light-emitting element 23 and the third light-shielding portion 33, or the positional relationship between the third light-shielding portion 33 and the first light-shielding portion 31 and the second light-shielding portion 32.

[0076] In this embodiment, by setting the height difference between the plane where the first light-emitting surface C1 is located and the first light-shielding part 31 to be greater than the height difference between the third light-emitting surface C3 and the third light-shielding part 33, the light-shielding material remaining on the first light-emitting surface C1 can more easily flow downward to the periphery of the first light-emitting element 21, thereby improving the light-emitting efficiency of the first light-emitting element 21, reducing the brightness difference between the first light-emitting element 21 and the third light-emitting element 23, and helping to improve display uniformity and display effect.

[0077] It should be noted that if there is a difference in light extraction efficiency between the second light-emitting element 22 and the third light-emitting element 23, the distance between the plane containing the second light-emitting surface C2 and the second light-shielding part 32 in the thickness direction Z of the array substrate 10 can be set to be different from the distance between the third light-emitting surface C3 and the third light-shielding part 33. This reduces the difference in light extraction efficiency between the second light-emitting element 22 and the third light-emitting element 23 and improves display uniformity. The specific setting method can refer to the setting method used in the aforementioned embodiments, and will not be repeated in this application embodiment.

[0078] In some embodiments, please refer to Figures 12 to 14 Multiple light-emitting elements 20 form a repeating unit F, and the multiple repeating units F are arranged repeatedly. The repeating unit F includes a first light-emitting element 21, a second light-emitting element 22, and a third light-emitting element 23 arranged sequentially adjacent to each other. The distance L1 between adjacent first light-emitting elements 21 and second light-emitting elements 22 is greater than the distance L2 between adjacent second light-emitting elements 22 and third light-emitting elements 23.

[0079] The display panel 100 includes multiple repeating units F, and the types and arrangement of light-emitting elements 20 within each repeating unit F are consistent. The multiple repeating units F may be arranged along a single direction, or they may be arranged along multiple directions; this embodiment does not impose any limitations on this. Optionally, the multiple repeating units F are arranged along a first direction X and a second direction Y, respectively.

[0080] The repeating unit F includes a first light-emitting element 21, a second light-emitting element 22, and a third light-emitting element 23 arranged sequentially adjacent to each other. The first light-emitting element 21, the second light-emitting element 22, and the third light-emitting element 23 are different light-emitting elements 20 used to form the same repeating unit F. The light-emitting colors of any two of the first light-emitting element 21, the second light-emitting element 22, and the third light-emitting element 23 may be the same or different. Optionally, the light-emitting colors of the first light-emitting element 21, the second light-emitting element 22, and the third light-emitting element 23 may all be different.

[0081] It should be noted that the specific arrangement of the first light-emitting element 21, the second light-emitting element 22, and the third light-emitting element 23 in a single repeating unit F is not limited in the embodiments of this application. For example, as shown... Figure 12 and Figure 13 As shown, the first light-emitting element 21, the second light-emitting element 22, and the third light-emitting element 23 can be arranged adjacent to each other along the first direction X, or please refer to [reference needed]. Figure 14 The first light-emitting element 21 and the second light-emitting element 22 are arranged adjacent to each other along the first direction X, and the second light-emitting element 22 and the third light-emitting element 23 are arranged adjacent to each other along the second direction Y. Figure 13 The illustration shows the case where the display panel is a transparent display panel. Specifically, the display panel may include a transparent area A7, where there are no light-shielding materials or light-emitting elements, thereby achieving a transparent display function. Furthermore, a first signal line 15 and a light-shielding material for blocking the first signal line 15 may exist in the area outside the transparent area A7 and located between adjacent repeating units F.

[0082] Furthermore, a single repeating unit F may include only the first light-emitting element 21, the second light-emitting element 22, and the third light-emitting element 23, or it may include other light-emitting elements 20. This embodiment of the application does not impose any limitations on this. As long as a single repeating unit F can simultaneously include the first light-emitting element 21, the second light-emitting element 22, and the third light-emitting element 23, and the first light-emitting element 21 and the second light-emitting element 22 are arranged adjacent to each other, and the second light-emitting element 22 and the third light-emitting element 23 are arranged adjacent to each other, it is acceptable.

[0083] Furthermore, in this embodiment, the distance L1 between adjacent first light-emitting elements 21 and second light-emitting elements 22 is set to be greater than the distance L2 between adjacent second light-emitting elements 22 and third light-emitting elements 23. Here, "distance between adjacent first light-emitting elements 21 and second light-emitting elements 22" refers to the average distance between the edge of the first light-emitting element 21 facing the second light-emitting element 22 and the edge of the second light-emitting element 22 facing the first light-emitting element 21 in a single repeating unit F. Considering the different shapes and layouts of the first and second light-emitting elements 21, the edge of the first light-emitting element 21 can be a straight line, or it can be a broken line or a curve. The same applies to the edge of the second light-emitting element 22. That is, the first light-emitting element 21 can be directly opposite the second light-emitting element 22 in the arrangement direction, or they can be not directly opposite each other. The distance between adjacent second light-emitting elements 22 and third light-emitting elements 23 is similar, and will not be elaborated further in this embodiment.

[0084] In this embodiment, by setting the distance L1 between adjacent first light-emitting elements 21 and second light-emitting elements 22 to be greater than the distance L2 between adjacent second light-emitting elements 22 and third light-emitting elements 23, a larger space can be provided between the first light-emitting elements 21 and second light-emitting elements 22 to accommodate light-shielding material. Based on this, the light-shielding material located on the first light-emitting element 21 can more easily flow between the first light-emitting element 21 and second light-emitting elements 22, thereby improving the light emission efficiency of the first light-emitting element 21, reducing the brightness difference between the first light-emitting element 21 and other light-emitting elements 20, and helping to improve display uniformity and display effect.

[0085] It should be noted that, in order to improve the light extraction efficiency of the first light-emitting element 21, the height difference between the first light-emitting surface C1 and the first light-shielding part 31 can be set to be greater than the height difference between other light-emitting surfaces and their corresponding light-shielding parts. Alternatively, the distance L1 between adjacent first light-emitting elements 21 and second light-emitting elements 22 can be set to be greater than the distance L2 between adjacent second light-emitting elements 22 and third light-emitting elements 23. Alternatively, both the height difference between the first light-emitting surface C1 and the first light-shielding part 31 and the distance L1 between adjacent first light-emitting elements 21 and second light-emitting elements 22 can be set to be greater than the distance L2 between adjacent second light-emitting elements 22 and third light-emitting elements 23 can be set. In other words, the light extraction efficiency of the first light-emitting element 21 can be improved in various ways, and this application embodiment does not impose too many limitations on this.

[0086] In some embodiments, such as Figure 12 As shown, the first light-emitting element 21 in one repeating unit F is arranged adjacent to the third light-emitting element 23 in another repeating unit F. The distance L3 between the adjacent first light-emitting element 21 and the third light-emitting element 23 is greater than the distance L2 between the adjacent second light-emitting element 22 and the third light-emitting element 23.

[0087] Compared to the distance between adjacent light-emitting elements 20 in a single repeating unit F, the distance between two adjacent light-emitting elements 20 in two adjacent repeating units F is often larger. Based on this, the embodiment of this application adjusts the position of the first light-emitting element 21 in the repeating unit F, so that the first light-emitting element 21 is located at the edge of the repeating unit F relative to the other light-emitting elements 20. In this way, in two adjacent repeating units F, the first light-emitting element 21 in one repeating unit F can be arranged adjacent to the third light-emitting element 23 in the other repeating unit F.

[0088] In this design, the distance L3 between adjacent first light-emitting elements 21 and third light-emitting elements 23 can be greater than the distance L2 between adjacent second light-emitting elements 22 and third light-emitting elements 23. This allows for a larger space between the first light-emitting elements 21 and third light-emitting elements 23 to accommodate light-shielding material. Furthermore, the light-shielding material located on the first light-emitting element 21 can more easily flow between the first light-emitting element 21 and third light-emitting elements 23, thereby improving the light emission efficiency of the first light-emitting element 21, reducing the brightness difference between the first light-emitting element 21 and other light-emitting elements 20, and helping to improve display uniformity and display effect.

[0089] In some embodiments, such as Figure 12 and Figure 13 As shown, the array substrate 10 includes a first signal line 15. Along the thickness direction Z of the array substrate 10, the first signal line 15 does not overlap with the repeating unit F, and along the arrangement direction of the repeating unit F, the first signal line 15 is located between adjacent repeating units F.

[0090] The first signal is a metal trace used to transmit a specific signal. For example, the first signal line 15 can be used to transmit one of the scan signal scan, data signal Lata, power signal pvLL, power signal pvee, and reset signal vref. The first signal line 15 is at least partially located between adjacent repeating units F. In addition, the light-shielding part located between adjacent light-emitting elements 20 can cover and block the first signal line 15, reducing the light reflection effect of the first signal line 15 and improving the display effect of the display panel 100.

[0091] Based on this, to meet the need for avoidance of the first signal line 15, there will be a large distance between adjacent repeating units F. Furthermore, by adjusting the first light-emitting element 21 to the edge position in the repeating unit F, a large distance will be maintained between adjacent first light-emitting elements 21 and the third light-emitting element 23. This helps to further improve the light emission efficiency of the first light-emitting element 21, reduce the brightness difference between the first light-emitting element 21 and other light-emitting elements 20, and help improve display uniformity and display effect.

[0092] In some embodiments, in adjacent repeating units F, the distance L3 between adjacent first light-emitting elements 21 and third light-emitting elements 23 is greater than the distance L1 between adjacent first light-emitting elements 21 and second light-emitting elements 22.

[0093] As can be seen from the foregoing, the adjacent first light-emitting element 21 and the third light-emitting element 23 can have a relatively large distance to meet the need for avoidance of the first signal line 15. Furthermore, the distance L3 between adjacent first light-emitting elements 21 and the third light-emitting element 23 can be greater than the distance L1 between adjacent first light-emitting elements 21 and the second light-emitting element 22. That is, the spatial dimension between adjacent first light-emitting elements 21 and the third light-emitting element 23 is greater than the spatial dimension between adjacent first light-emitting elements 21 and the second light-emitting element 22. This allows more light-shielding material located on the first light-emitting surface C1 to flow between the first light-emitting elements 21 and the third light-emitting element 23, thereby further reducing the obstruction of the first light-emitting element 21 by the light-shielding material, improving the light-emitting efficiency of the first light-emitting element 21, reducing the brightness difference between the first light-emitting element 21 and other light-emitting elements 20, and helping to improve display uniformity and display effect.

[0094] In some embodiments, the distance between adjacent first light-emitting element 21 and second light-emitting element 22 is L1, and the distance between adjacent second light-emitting element 22 and third light-emitting element 23 is L2; ​​wherein L1 and L2 satisfy: 1.2≤L1 / L2≤100. Optionally, L1 / L2 is equal to one of 1.2, 2, 10, 50, 80, and 100.

[0095] In this embodiment, by setting the distance L1 between adjacent first light-emitting elements 21 and second light-emitting elements 22 to be greater than the distance L2 between adjacent second light-emitting elements 22 and third light-emitting elements 23, the light-shielding material on the first light-emitting element 21 can more easily flow between the first light-emitting element 21 and the second light-emitting element 22. Furthermore, this embodiment sets L1 / L2 to be no less than 1.2, thereby helping to ensure a certain spatial dimension between adjacent first light-emitting elements 21 and second light-emitting elements 22, meeting the flow requirements of the light-shielding material on the first light-emitting element 21. This improves the light emission efficiency corresponding to the first light-emitting element 21. Simultaneously, setting L1 / L2 to be no greater than 100 reduces the problem of insufficient overall resolution of the display panel 100 due to excessively large distance L1 between adjacent first light-emitting elements 21 and second light-emitting elements 22, thus helping to improve the display effect of the display panel 100.

[0096] In some embodiments, please refer to Figure 12 and Figure 15The display panel 10 has a first area A1 and a second area A2. The distance between the center O1 of the first area A1 and the center O3 of the display panel 100 is smaller than the distance between the center O2 of the second area A2 and the center O3 of the display panel 100. The distance between adjacent first light-emitting elements 21 and second light-emitting elements 22 located in the first area A1 is greater than the distance between first light-emitting elements 21 and second light-emitting elements 22 located in the second area A2.

[0097] The first area A1 and the second area A2 are two different areas on the display panel 100. The first area A1 and the second area A2 can have various shapes. For example, the first area A1 and the second area A2 can both be regular or irregular shapes such as circles or squares. Alternatively, the shapes of the first area A1 and the second area A2 can also be different. This application embodiment does not limit this.

[0098] The distance between the center O1 of the first zone A1 and the center O3 of the display panel 100 is less than the distance between the center O2 of the second zone A2 and the center O3 of the display panel 100. Specifically, the length of the line connecting the center O1 of the first zone A1 and the center O3 of the display panel 100 is less than the length of the line connecting the center O2 of the second zone A2 and the center O3 of the display panel 100. The first zone A1 may or may not include the center O3 of the display panel 100. Furthermore, the center O1 of the first zone A1 may coincide with the center O3 of the display panel 100, or it may not coincide with the center O3 of the display panel 100.

[0099] It should be noted that, due to the influence of factors such as the shape of the display panel 100 itself and the differences in local structures, the "center O3 of the display panel 100" mentioned here may not be exactly the exact center of the display panel 100, and there may be some deviation. The same applies to the center O1 of the first zone A1 and the center O2 of the second zone A2.

[0100] During the use of the display panel 100, since the first zone A1 is closer to the center O3 of the display panel 100 than the second zone A2, and the second zone A2 is closer to the edge of the display panel 100 than the first zone A1, the heat generated in the second zone A2 can exchange with the side environment of the display panel 100. As a result, in related technologies, the temperature of the display panel 100 in the second zone A2 is often lower than the temperature in the first zone A1.

[0101] In view of this, the light-emitting elements 20 in the first region A1 and the second region A2 are designed differently. By setting the distance between adjacent first light-emitting elements 21 and second light-emitting elements 22 in the first region A1 to be greater than the distance between first light-emitting elements 21 and second light-emitting elements 22 in the second region A2, the heat accumulation in the first region A1 is reduced by this design, thereby balancing the temperature difference between the first region A1 and the second region A2 and improving the reliability of the display panel 100.

[0102] Furthermore, since there is a large distance between adjacent first light-emitting elements 21 and second light-emitting elements 22 in the first region A1, this design also allows the light-shielding material located on the first light-emitting element 21 in the first region A1 to flow more easily between the first light-emitting element 21 and the second light-emitting element 22, thereby improving the light emission efficiency of the first light-emitting element 21 in the first region A1.

[0103] In some embodiments, such as Figures 4 to 8 As shown, the light-shielding layer 30 includes a second light-shielding material portion 35 located on the side of the second light-emitting element 22 facing away from the array substrate 10.

[0104] The second light-shielding material portion 35 is a light-shielding material remaining on the second light-emitting surface C2. The presence of the second light-shielding material portion 35 will adversely affect the light emission efficiency of the second light-emitting element 22. However, compared with the first light-emitting element 21, due to factors such as the brightness and color sensitivity of the second light-emitting element 22 itself, the second light-shielding material portion 35 has a smaller impact on the light emission efficiency of the second light-emitting element 22. Therefore, the display panel 100 can achieve a good display effect even with the presence of the second light-shielding material portion 35.

[0105] It should be noted that, by adjusting the structure of the first light-emitting element 21 itself or other structures around the first light-emitting element 21, there may be a light-shielding material on the first light-emitting surface C1 of the first light-emitting element 21, or there may be no light-shielding material. This application embodiment does not limit this.

[0106] In some embodiments, please refer to Figure 16 The light-shielding layer 30 includes a first light-shielding material portion 34 located on the side of the first light-emitting element 21 facing away from the array substrate 10. In the thickness direction Z of the array substrate 10, the size of the first light-shielding material portion 34 is smaller than the size of the second light-shielding material portion 35. Here, "the size of the first light-shielding material portion 34" refers to the average size of the first light-shielding material portion 34 in the thickness direction Z of the array substrate 10. Similarly, "the size of the second light-shielding material portion 35" refers to the average size of the second light-shielding material portion 35 in the thickness direction Z of the array substrate 10.

[0107] In this embodiment, the first light-shielding material part 34 is the light-shielding material remaining on the first light-emitting surface C1. Since the height difference between the first light-emitting surface C1 and the first light-shielding part 31 is set to be greater than the height difference between other light-emitting surfaces and the corresponding light-shielding parts, or the distance between adjacent first light-emitting elements 21 and second light-emitting elements 22 is set to be greater than the distance between adjacent second light-emitting elements 22 and third light-emitting elements 23, more light-shielding material located on the first light-emitting surface C1 can flow to the periphery of the first light-emitting element 21. As a result, the size of the first light-shielding material part 34 is smaller than the size of the second light-shielding material part 35. That is, the light-shielding effect on the first light-emitting element 21 is smaller than that on the second light-emitting element 22. This can reduce the brightness difference between the first light-emitting element 21 and the second light-emitting element 22, which helps to improve display uniformity and display effect.

[0108] In some embodiments, the first light-emitting surface C1 has a first central region A3 and a first edge region A4 located around the first central region A3. In the thickness direction Z of the array substrate 10, the size of the first light-shielding material portion 34 at the first central region A3 is smaller than the size of the first light-shielding material portion 34 at the first edge region A4. The second light-emitting surface C2 has a second central region A5 and a second edge region A6 located around the second central region A5. In the thickness direction Z of the array substrate 10, the size of the second light-shielding material portion 35 at the second central region A5 is smaller than the size of the second light-shielding material portion 35 at the second edge region A6.

[0109] The first central region A3 is the central region of the first light-emitting surface C1, and the first edge region A4 is the edge region of the first light-emitting surface C1. The dimensions and shapes of the first central region A3 and the first edge region A4 are not limited in this embodiment. Optionally, the shape of the first central region A3 can be adapted to the shape of the first edge region A4. For example, if the first central region A3 is square, then the first edge region A4 is a square ring structure. If the first central region A3 is circular, then the first edge region A4 is a circular ring structure. The second central region A5 and the second edge region A6 on the second light-emitting surface C2 are similarly described, and will not be elaborated further in this embodiment.

[0110] Furthermore, the size of the first light-shielding material portion 34 at the first central region A3 is smaller than the size of the first light-shielding material portion 34 at the first edge region A4, and the size of the second light-shielding material portion 35 at the second central region A5 is smaller than the size of the second light-shielding material portion 35 at the second edge region A6, indicating that the light-shielding layer 30 is formed by printing black light-shielding material.

[0111] Specifically, when printing black light-blocking material, the black light-blocking material may wet and diffuse along the side of the light-emitting element 20 to the light-emitting surface of the light-emitting element 20. The black light-blocking material that reaches the light-emitting surface of the first light-emitting element 21 will first reach the first edge area A4, and then diffuse from the first edge area A4 to the first center area A3. This results in the size of the first light-blocking material part 34 in the first center area A3 being smaller than the size of the first light-blocking material part 34 in the first edge area A4.

[0112] Considering that the light-shielding material at the edge of the light-emitting surface is easier to flow to the periphery of the light-emitting element 20 than the light-shielding material at the center, the light-shielding layer 30 in this embodiment is formed by printing. The structure of the first light-emitting element 21 itself or other structures around the first light-emitting element 21 are adjusted so that more light-shielding material on the first light-emitting surface C1 can flow to the periphery of the first light-emitting element 21, thereby further reducing the size of the first light-shielding material part 34 and improving the light emission efficiency of the first light-emitting element 21.

[0113] In some embodiments, such as Figure 16 As shown, in the thickness direction Z of the array substrate 10, the size of the first light-shielding material portion 34 at the first edge region A4 is smaller than the size of the second light-shielding material portion 35 at the second edge region A6.

[0114] In this embodiment, due to adjustments to the structure of the first light-emitting element 21 itself or other structures around the first light-emitting element 21, more light-shielding material at the first edge region A4 can flow to the periphery of the first light-emitting element 21. This results in the light-shielding effect of the first light-shielding material portion 34 on the first light-emitting element 21 at the first edge region A4 being less than the light-shielding effect of the second light-shielding material portion 35 on the second light-emitting element 22 at the second edge region A6. This helps reduce the blocking effect of the first light-shielding material portion 34 on the wide-viewing-angle light emitted by the first light-emitting element 21, improving the brightness and display uniformity of the display panel 100 under wide-viewing-angle display conditions, and thus has strong practicality.

[0115] In some embodiments, the first light-emitting element 21 is used to emit red light, and the second light-emitting element 22 is used to emit blue light or green light.

[0116] Compared to the light-emitting element 20 used to emit blue or green light, the light-emitting element 20 used to emit red light is more susceptible to the influence of light-shielding materials, which can lead to a decrease in light emission efficiency. In view of this, the embodiments of this application have adjusted the structure of the first light-emitting element 21 used to emit red light or other structures around it, so as to reduce the influence of light-shielding materials on the light emission efficiency of red light, which helps to improve display uniformity and display effect.

[0117] Furthermore, in some optional embodiments, the plurality of light-emitting elements 20 further includes a third light-emitting element 23, wherein the first light-emitting element 21 is used to emit red light, the second light-emitting element 22 is used to emit green light, and the third light-emitting element 23 is used to emit blue light.

[0118] In some embodiments, please refer to Figure 17 The display panel 100 also includes a transparent adhesive layer 50 disposed on the side of the light-shielding layer 30 away from the array substrate 10. The transparent adhesive layer 50 includes a second surface M2 away from the array substrate 10, and the second surface M2 is parallel to the plane of the array substrate 10.

[0119] The transparent adhesive layer 50 can be a whole surface structure, and the transparent adhesive layer 50 can cover multiple light-emitting elements 20. The transparent adhesive layer 50 includes a transparent adhesive material. In the thickness direction Z of the array substrate 10, the two sides of the transparent adhesive layer 50 can be bonded and fixed to different film layers respectively, so as to improve the positional reliability between different film layers.

[0120] The second surface M2 is the surface of the transparent adhesive layer 50 facing away from the array substrate 10. The second surface M2 is parallel to the plane of the array substrate 10, that is, the second surface M2 is a flat structure. Considering that the surface of the light-shielding layer 30 facing away from the array substrate 10 is not a flat structure, in this embodiment of the application, by adding a transparent adhesive layer 50 to the side of the light-shielding layer 30 facing away from the array substrate 10 and performing a planarization treatment on the second surface M2 of the transparent adhesive layer 50, the bonding strength between the transparent adhesive layer 50 and other film layers on the side facing away from the array substrate 10 is improved, thereby improving the structural reliability of the display panel 100.

[0121] In some embodiments, the display panel 100 further includes an inorganic layer 60 disposed on the side of the light-shielding layer 30 facing away from the array substrate 10.

[0122] Considering that the light-shielding material in the light-shielding layer 30 usually includes organic materials, and the water-blocking effect of organic materials is usually not ideal, in view of this, the embodiment of the present application adds an inorganic layer 60 on the side of the light-shielding layer 30 away from the array substrate 10, and the inorganic material in the inorganic layer 60 plays a blocking role against water vapor, thereby improving the water-blocking protection effect on the light-emitting element 20 and the array substrate 10, which has strong practicality.

[0123] It should be noted that, in addition to the film layer structures mentioned above, the display panel may also include other film layer structures. This application does not limit the specific film layer composition of the display panel. Optionally, the display panel can be a transparent display panel and includes a cover plate 70 located on the side of the inorganic layer 60 facing away from the array substrate 10, and an anti-glare layer 80 located on the side of the cover plate 70 facing away from the array substrate 10, which can reduce halo problems caused by external light reflection. Since it is a transparent display panel, halo problems are common. By providing the anti-glare layer 80, the degree of halo can be reduced, improving the visual experience of the display panel.

[0124] Secondly, please refer to Figure 18 This application provides a display panel 100, which includes an array substrate 10, light-emitting elements 20, and a light-shielding layer 30. The light-emitting elements 20 are located on one side of the array substrate 10 and electrically connected to it. A plurality of light-emitting elements 20 include a first light-emitting element 21, a second light-emitting element 22, and a third light-emitting element 23 disposed adjacent to each other. The light-shielding layer 30 is disposed on one side of the array substrate 10 and is at least partially located between adjacent light-emitting elements 20. The distance between adjacent first light-emitting elements 21 and second light-emitting elements 22 is greater than the distance between adjacent second light-emitting elements 22 and third light-emitting elements 23.

[0125] The plurality of light-emitting elements 20 includes a first light-emitting element 21, a second light-emitting element 22, and a third light-emitting element 23 arranged sequentially adjacent to each other. The first light-emitting element 21, the second light-emitting element 22, and the third light-emitting element 23 can be different light-emitting elements 20 used to form the same repeating unit F. The light-emitting colors of any two of the first light-emitting elements 21, the second light-emitting element 22, and the third light-emitting element 23 can be the same or different. Optionally, the light-emitting colors of the first light-emitting element 21, the second light-emitting element 22, and the third light-emitting element 23 can all be different.

[0126] It should be noted that the specific arrangement of the adjacent first light-emitting element 21, second light-emitting element 22, and third light-emitting element 23 is not limited in this embodiment. For example, the first light-emitting element 21, second light-emitting element 22, and third light-emitting element 23 can be arranged adjacent to each other in sequence along the first direction X, or the first light-emitting element 21 and the second light-emitting element 22 can be arranged adjacent to each other along the first direction X, and the second light-emitting element 22 and the third light-emitting element 23 can be arranged adjacent to each other along the second direction Y.

[0127] Furthermore, in this embodiment of the application, the distance L1 between adjacent first light-emitting element 21 and second light-emitting element 22 is set to be greater than the distance L2 between adjacent second light-emitting element 22 and third light-emitting element 23.

[0128] This allows for a larger space between the first light-emitting element 21 and the second light-emitting element 22 to accommodate the light-shielding material. Based on this, the light-shielding material located on the first light-emitting element 21 can more easily flow between the first light-emitting element 21 and the second light-emitting element 22, thereby improving the light emission efficiency of the first light-emitting element 21, reducing the brightness difference between the first light-emitting element 21 and other light-emitting elements 20, and helping to improve display uniformity and display effect.

[0129] Thirdly, please refer to Figure 19 This application provides a display device 200, which includes the display panel described in any of the foregoing embodiments. The display device 200 includes, but is not limited to, mobile phones, tablets, and in-vehicle display devices.

[0130] It should be noted that the display device 200 provided in this application embodiment has the beneficial effects of the display panel in any of the foregoing embodiments. For details, please refer to the foregoing description of the beneficial effects of the display panel. This application embodiment will not repeat the description.

[0131] While the embodiments disclosed in this application are as described above, the content is merely for the purpose of facilitating understanding of this application and is not intended to limit the invention. Any person skilled in the art to which this application pertains may make any modifications and changes in form and detail of the implementation without departing from the spirit and scope disclosed in this application; however, the scope of protection of this application shall still be determined by the scope defined in the appended claims.

[0132] The above description is merely a specific embodiment of this application. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, substitutions for other connection methods described above can be made by referring to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application.

Claims

1. A display panel, characterized in that, include: Array substrate; A light-emitting element is located on one side of the array substrate and electrically connected to the array substrate. The plurality of light-emitting elements include a first light-emitting element, a second light-emitting element, and a third light-emitting element arranged adjacent to each other. A light-shielding layer is disposed on one side of the array substrate and is at least partially located between adjacent light-emitting elements; The distance between adjacent first light-emitting elements and second light-emitting elements is greater than the distance between adjacent second light-emitting elements and third light-emitting elements.

2. The display panel according to claim 1, characterized in that, A plurality of light-emitting elements form a repeating unit, and the plurality of repeating units are arranged in a repeating manner. The repeating unit includes a first light-emitting element, a second light-emitting element, and a third light-emitting element arranged sequentially and adjacently. Within the same repeating unit, the distance between adjacent first light-emitting elements and second light-emitting elements is greater than the distance between adjacent second light-emitting elements and third light-emitting elements.

3. The display panel according to claim 1, characterized in that, A plurality of light-emitting elements form a repeating unit, and the plurality of repeating units are arranged in a repeating manner. The repeating unit includes a first light-emitting element, a second light-emitting element, and a third light-emitting element arranged sequentially and adjacently. The first light-emitting element in one of the repeating units is disposed adjacent to the third light-emitting element in the other repeating unit; Wherein, the distance between the first light-emitting element in one adjacent repeating unit and the third light-emitting element in another repeating unit is greater than the distance between the adjacent second light-emitting element and the third light-emitting element.

4. The display panel according to claim 2 or 3, characterized in that, The array substrate includes a first signal line. Along the thickness direction of the array substrate, the first signal line does not overlap with the repeating unit, and along the arrangement direction of the repeating unit, the first signal line is located between adjacent repeating units.

5. The display panel according to claim 4, characterized in that, In adjacent repeating units, the distance between adjacent first light-emitting elements and third light-emitting elements is greater than the distance between adjacent first light-emitting elements and second light-emitting elements.

6. The display panel according to claim 4, characterized in that, The light-shielding layer includes a light-shielding portion located between adjacent light-emitting elements, and the light-shielding portion covers the first signal line.

7. The display panel according to claim 1, characterized in that, The distance between adjacent first light-emitting elements and second light-emitting elements is L1, and the distance between adjacent second light-emitting elements and third light-emitting elements is L2; Among them, L1 and L2 satisfy: 1.2≤L1 / L2≤100.

8. The display panel according to claim 1, characterized in that, The display panel has a first area and a second area, wherein the distance between the center of the first area and the center of the display panel is less than the distance between the center of the second area and the center of the display panel; Wherein, the distance between adjacent first light-emitting elements and second light-emitting elements located in the first area is greater than the distance between first light-emitting elements and second light-emitting elements located in the second area.

9. The display panel according to claim 1, characterized in that, The first light-emitting element emits red light, and the second light-emitting element emits blue or green light.

10. The display panel according to claim 1, characterized in that, It also includes a transparent adhesive layer disposed on the side of the light-shielding layer away from the array substrate, the transparent adhesive layer including a second surface away from the array substrate, the second surface being parallel to the plane of the array substrate.

11. The display panel according to claim 1, characterized in that, It also includes an inorganic layer disposed on the side of the light-shielding layer opposite to the array substrate.

12. A display device, characterized in that, Includes the display panel as described in any one of claims 1 to 11.

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