Display module and display device

Abstract

The present application discloses a display module and a display device, wherein the display module comprises a substrate, a plurality of light-emitting elements arranged on one side of the substrate, and a diffuse light-mixing structure arranged on the side of the light-emitting element away from the substrate, wherein the diffuse light-mixing structure comprises a base layer and a diffuse light-mixing portion arranged on the side of the base layer away from the light-emitting element, wherein the diffuse light-mixing portion comprises a plurality of annular protrusions arranged in sequence, wherein the plurality of annular protrusions in the diffuse light-mixing portion are arranged around the same central area, wherein at least one light-emitting element is arranged in the central area, and along the thickness direction of the substrate, the maximum distance between the end of the annular protrusion away from the base layer and the base layer is a first height, and in the diffuse light-mixing portion, the first height of the annular protrusion close to the central area is lower than the first height of the annular protrusion away from the central area. The light mixing uniformity of the display module provided by the present application is improved, thereby improving the display quality.

Description

Technical Field

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

[0002] With the continuous development of liquid crystal display technology, the application of liquid crystal display devices is becoming more and more extensive. Liquid crystal display devices include backlight modules and display panels. The backlight modules provide backlight for the display panels. Point light sources are usually used in the backlight modules, which easily leads to the problem that the brightness of the area directly facing the point light sources is higher and the brightness of the area between adjacent point light sources is lower, resulting in uneven light mixing and forming starry sky, which seriously affects the display quality. Summary of the invention

[0003] The embodiments of the present application provide a display module and a display device, and the light mixing uniformity of the display module is improved, thereby improving the display quality.

[0004] An embodiment of a first aspect of the present application provides a display module, including:

[0005] substrate;

[0006] A plurality of light emitting elements disposed on one side of the substrate;

[0007] A diffusion light mixing structure is arranged on the side of the light-emitting element away from the substrate, the diffusion light mixing structure includes a base layer and a diffusion light mixing portion arranged on the side of the base layer away from the light-emitting element, the diffusion light mixing portion includes a plurality of annular protrusions nested in sequence, the plurality of annular protrusions in the diffusion light mixing portion are arranged around the same central area, the central area is provided with at least one light-emitting element, along the thickness direction of the substrate, the maximum distance between one end of the annular protrusion away from the base layer and the base layer is a first height, and in the diffusion light mixing portion, the first height of the annular protrusion close to the central area is lower than the first height of the annular protrusion away from the central area.

[0008] The embodiment of the second aspect of the present application further provides a display device, comprising the display module provided by the first aspect of the present application.

[0009] In the display module provided by the present application, the diffusion light mixing part includes a plurality of annular protrusions nested in sequence, and the maximum distance between the end of the annular protrusion away from the base layer and the base layer along the thickness direction of the substrate is the first height. In the diffusion light mixing part, the first height of the annular protrusion close to the central area is lower than the first height of the annular protrusion away from the central area. The annular protrusion in the diffusion light mixing part has the function of diffusing and mixing the light emitted by the light-emitting unit in the central area. The annular protrusion can adopt a prism structure, and the light is reflected and refracted by the annular protrusion to finally achieve light mixing. The higher the first height of the annular protrusion, the greater the diffusion effect on the light. Since the area close to the light-emitting unit in the central area is full of light, the first height of the annular protrusion close to the light-emitting unit in the central area is set to be smaller, and the diffusion light mixing effect is smaller. Since the light is weaker at the position away from the central area, the first height of the annular protrusion away from the central area is set to be larger to enhance the diffusion effect on the light. Therefore, the above-mentioned diffusion light mixing structure can enhance the light mixing effect, reduce the brightness difference between the regions, and improve the brightness uniformity of the display module. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0011] Figure 1 is a top view of a display module provided in an embodiment of the present application;

[0012] Figure 2 yes Figure 1 Sectional view along P-P';

[0013] Figure 3 yes Figure 1 Another cross-sectional view along the P-P' line;

[0014] Figure 4 yes Figure 1 Another cross-sectional view along the P-P' line;

[0015] Figure 5 is a top view of another display module provided in an embodiment of the present application;

[0016] Figure 6 is a partial schematic diagram of a display module provided in an embodiment of the present application;

[0017] Figure 7 is another partial schematic diagram of a display module provided in an embodiment of the present application;

[0018] Figure 8 is a top view of another display module provided in an embodiment of the present application;

[0019] Fig. 9 is another partial schematic diagram of a display module provided in an embodiment of the present application;

[0020] Fig.10 is another partial schematic diagram of a display module provided in an embodiment of the present application;

[0021] Fig.11 is another partial schematic diagram of a display module provided in an embodiment of the present application;

[0022] Fig.12 This is a simulation diagram of the display effect of a display module provided in comparison;

[0023] Fig.13 This is a simulation diagram of the display effect of a display module provided in an embodiment of the present application;

[0024] Fig.14 It is a structural schematic diagram of a display device provided in an embodiment of the present application.

[0025] In the attached figure:

[0026] 1-display module; 11-substrate; 12-light-emitting element; 121-first light-emitting element; 122-second light-emitting element; 13-diffusion light mixing structure; 131-base layer; 132-annular protrusion; D-first height; A1-central area; x-first direction; 2-display device. DETAILED DESCRIPTION

[0027] The features and exemplary embodiments of various aspects of the application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the application. However, it is obvious to those skilled in the art that the application can be implemented when some details in these specific details are not needed. The following description of the embodiments is only to provide a better understanding of the application by illustrating the example of the application.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0029] The inventor has found through research that with the continuous development of display technology, new requirements have been put forward for display devices. Display devices with low power consumption, low cost, and light and thin characteristics may be more popular with users. Considering the power consumption, cost, thickness and other aspects of the display device, the following means are used in the relevant technology to improve the comprehensive performance of the display device: In order to reduce power consumption and cost, the display module usually uses fewer light-emitting elements, resulting in a larger spacing between the light-emitting elements, so that the area between the light-emitting elements is darker than the area opposite to the light-emitting elements; in order to reduce the thickness, the thickness of the display module is thinned, resulting in a decrease in the longitudinal light mixing distance of the light-emitting elements and a worse light mixing effect; ultimately, the position directly opposite the light-emitting element in the display module is brighter, while other areas are darker, that is, the backlight module displays uneven brightness. Based on the research on the above problems, the inventor provides a display module and a display device to improve the light mixing uniformity of the display module, thereby improving the display quality.

[0030] In order to better understand this application, Figures 1 to 14 The display module and the display device according to the embodiments of the present application are described in detail.

[0031] See also Figure 1 and Figure 2 , Figure 1 is a top view of a display module provided in an embodiment of the present application; Figure 2 yes Figure 1The embodiment of the present application provides a display module 1, comprising a substrate 11, a plurality of light-emitting elements 12 arranged on one side of the substrate 11, and a diffuse light-mixing structure 13 arranged on the side of the light-emitting element 12 away from the substrate 11, the diffuse light-mixing structure 13 comprising a base layer 131 and a diffuse light-mixing portion arranged on the side of the base layer 131 away from the light-emitting element 12, the diffuse light-mixing portion comprising a plurality of annular protrusions 132 nested in sequence, the plurality of annular protrusions 132 in the diffuse light-mixing portion are all arranged around the same central area A1, the central area A1 is provided with at least one light-emitting element 12, along the thickness direction of the substrate 11, the maximum distance between the end of the annular protrusion 132 away from the base layer 131 and the base layer 131 is a first height D, and in the diffuse light-mixing portion, the first height D of the annular protrusion 132 close to the central area A1 is lower than the first height D of the annular protrusion 132 away from the central area A1.

[0032] In the display module 1 provided in the present application, the light-emitting element 12 may be an LED, a mini LED, a Micro LED, etc., and the present application does not make any special limitation thereto.

[0033] In the display module 1 provided in the present application, a diffuse light mixing structure 13 is provided on the side of the light emitting element 12 facing away from the substrate 11, and the diffuse light mixing structure 13 includes a base layer 131 and a diffuse light mixing portion, and the diffuse light mixing portion is provided on the side of the base layer 131 facing away from the light emitting element 12. Among them, the display module 1 may include one or more central areas A1, and each central area A1 includes at least one light emitting element 12. The diffuse light mixing portion corresponds to the central area A1 one-to-one, and in each pair of one-to-one corresponding diffuse light mixing portions and central areas A1, each annular protrusion 132 in the diffuse light mixing portion is arranged around the central area A1. When the central area A1 includes one light emitting element 12, each annular protrusion 132 in the diffuse light mixing portion is arranged around the light emitting element 12, and when the central area A1 includes multiple light emitting elements 12, each annular protrusion 132 in the diffuse light mixing portion is arranged around the multiple light emitting elements 12. When the display module 1 includes multiple central areas A1, the diffuse light mixing structure 13 includes multiple diffuse light mixing parts corresponding to different central areas A1. Adjacent diffuse light mixing parts may be adjacent to or spaced apart by a preset distance, which is not particularly limited in the present application.

[0034] In the display module 1 provided in the present application, the diffusion light mixing part includes a plurality of annular protrusions 132 nested in sequence. Along the thickness direction of the substrate 11, the maximum distance between the end of the annular protrusion 132 away from the base layer 131 and the base layer 131 is the first height D. In the diffusion light mixing part, the first height D of the annular protrusion 132 close to the central area A1 is lower than the first height D of the annular protrusion 132 away from the central area A1. The annular protrusion 132 in the diffusion light mixing part has the function of diffusing and mixing the light emitted by the light emitting unit in the central area A1. The annular protrusion 132 can adopt a prism structure, and the light is reflected and refracted by the annular protrusion 132 to finally achieve light mixing. The higher the first height D of the annular protrusion 132, the greater the diffusion effect on the light. Since the area close to the light emitting unit in the central area A1 is full of light, the first height D of the annular protrusion 132 close to the light emitting unit in the central area A1 is set to be smaller, and the diffusion light mixing effect is smaller. Since the light is weaker at the position far from the center area A1, the first height D of the annular protrusion 132 far from the center area A1 is set to be larger to enhance the diffusion effect of the light. Thus, the light mixing effect of the light can be enhanced by the above-mentioned diffusion light mixing structure 13, the brightness difference of each area can be reduced, and the brightness uniformity of the display module 1 can be improved.

[0035] In the display module 1 provided in the present application, Figure 2 As shown, adjacent diffuse light mixing parts may be adjacent to each other, or as shown in Figure 3 As shown, adjacent diffuse light mixing parts may be spaced apart by a preset distance, which is not particularly limited in this application.

[0036] In a possible implementation, Figure 2 and Figure 3 As shown, Figure 3 yes Figure 1 In another cross-sectional view along the middle line PP', the first heights D of the plurality of annular protrusions 132 in the diffuse light mixing portion increase sequentially along the first direction x, and the first direction x is a direction from close to the central area A1 to away from the central area A1.

[0037] In the above embodiment, since the light is more abundant at the position of the light emitting element 12 closer to the central area A1, the first height D of the annular protrusion 132 can be set to be smaller, and since the light is weaker at the position farther from the central area A1, the first height D of the annular protrusion 132 can be set to be larger to balance the brightness difference of each part. Therefore, the first height D of each annular protrusion 132 in the diffuse light mixing part can be configured to have a gradual trend. Specifically, the first height D of multiple annular protrusions 132 in the diffuse light mixing part increases in sequence along the first direction x, and the first direction x is a direction from close to the central area A1 to away from the central area A1, so as to improve the uniformity of the light mixing effect and prevent the brightness from changing suddenly along the first direction x.

[0038] Specifically, the first heights D of the plurality of annular protrusions 132 in the diffuse light mixing portion increase sequentially along the first direction x, and the increase amplitudes may be the same, that is, the difference in the first heights D of adjacent annular protrusions 132 may be designed to be the same, to further improve the uniformity of light mixing.

[0039] In a possible implementation, Figure 2 and Figure 3 As shown, the cross section of the annular protrusion 132 along a direction perpendicular to its own extension direction is an isosceles triangle, and two base angles of the isosceles triangle are located on the base layer 131 .

[0040] In the above embodiment, the annular protrusion 132 may be a prism, which can make the light diverge fully. The cross-section of the annular protrusion 132 along the direction perpendicular to its own extension is an isosceles triangle, so that the annular protrusion 132 includes two inclined side surfaces, and the light is reflected and refracted after being emitted from the central area A1 to the side surface of the annular protrusion 132, which helps to make the light more divergent, thereby achieving a better light mixing effect.

[0041] In a feasible implementation manner, the ridge line of each annular protrusion 132 away from the base layer 131 is parallel to the base layer 131 .

[0042] In the above embodiment, the ridge of the annular protrusion 132 away from the base layer 131 is parallel to the base layer 131, that is, the first height D of each part of each annular protrusion 132 is the same, so that the regulating effect of each position of each annular protrusion 132 on light is similar, so as to further improve the uniformity of mixed light.

[0043] In a feasible implementation manner, the annular protrusion 132 partially overlaps with the orthographic projection of the light emitting element 12 on the substrate 11 .

[0044] In the above embodiment, the orthographic projections of the annular protrusion 132 and the light emitting element 12 on the substrate 11 partially overlap, which may include that the orthographic projection of the annular protrusion 132 on the substrate 11 covers the edge of the orthographic projection of the light emitting element 12 on the substrate 11. Figure 4 As shown, Figure 4 yes Figure 1 Another cross-sectional view along the P-P' in the middle; along the first direction x, the width of the overlapping part can be d. The area directly opposite to the light-emitting element 12 has sufficient light and high brightness, and the area directly opposite to the diffuse light-mixing part has the effect of regulating and brightening the light. The area directly opposite to the light-emitting element 12 and the area directly opposite to the diffuse light-mixing part are arranged to overlap, that is, the diffuse light-mixing part and the orthographic projection of the light-emitting element 12 on the substrate 11 overlap, so as to achieve a good transition and improve the uniformity of the light output.

[0045] In a possible implementation, Figure 1As shown, a plurality of light emitting elements 12 are arranged in an array, and the light emitting elements 12 are disposed in a one-to-one correspondence with the diffuse light mixing parts.

[0046] In the above embodiment, the light emitting elements 12 are arranged in an array, and dark areas are easily formed between adjacent light emitting units, thereby making the light output brightness of the display module 1 uneven. After the light emitting elements 12 and the diffuse light mixing parts are arranged in a one-to-one correspondence, the light output brightness of the area between adjacent light emitting elements 12 can be improved by the diffuse light mixing parts, so as to reduce the brightness difference between the area between adjacent light emitting elements 12 and the area directly facing the light emitting elements 12, and improve the uniformity of the light output brightness.

[0047] In a possible implementation, Figure 5 As shown, Figure 5 It is a top view of another display module provided in an embodiment of the present application; the display module 1 includes a plurality of light-emitting partitions, each of which includes a plurality of light-emitting elements 12, and the light-emitting partitions are arranged in a one-to-one correspondence with the diffuse light mixing parts.

[0048] In the above embodiment, each light-emitting partition includes a plurality of light-emitting elements 12, and the plurality of light-emitting elements 12 are driven synchronously, which can simplify the driving circuit. At the same time, the synchronous driving of the plurality of elements can reduce the driving delay and improve the display effect. When the light-emitting partition includes a plurality of light-emitting elements 12, the light-emitting partition corresponds to the diffuse light mixing part one by one, that is, the diffuse light mixing part surrounds the plurality of light-emitting elements 12 in the light-emitting partition. At this time, the plurality of light-emitting elements 12 in the light-emitting partition can be mixed synchronously, which reduces the number of diffuse light mixing parts and simplifies the preparation process of the display module 1.

[0049] In a possible implementation, Figure 5 and Figure 6 As shown, Figure 6 It is a partial schematic diagram of a display module provided by an embodiment of the present application; the projection of the annular protrusion 132 on the plane perpendicular to the substrate 11 is a circular ring or a polygonal ring.

[0050] In the above embodiment, the number of sides of the polygonal ring can be four, five, six, etc., and it can be a regular polygon. The side lengths can also be adjusted to different lengths according to actual circumstances, and this application does not make any special limitations.

[0051] In the above embodiment, the distances between adjacent diffuse light mixing sections can be set to be equal, that is, the distance distributions between the outer edges of the outermost annular protrusions 132 in adjacent diffuse light mixing sections can be set to be the same, and at the same time, the midpoint of each diffuse light mixing section can be made to coincide with the midpoint of the central area A1, so that the light mixing effects of the various diffuse light mixing sections are similar, thereby improving the uniformity of the light mixing.

[0052] In the above-mentioned embodiment, each diffuse light mixing portion may include a plurality of annular protrusions 132, and the spacing between the plurality of annular protrusions 132 may be the same, or the spacing between adjacent annular protrusions 132 may gradually decrease from close to the center area A1 to away from the center area A1, etc. The specific setting method may be set according to the actual light type requirements, and the present application does not make any special limitation.

[0053] In a possible implementation, Figure 6 As shown, a plurality of light emitting elements 12 are arranged in an array, and the projection of the annular protrusion 132 on the plane perpendicular to the substrate 11 is a circular ring, so that each position of the annular protrusion 132 is at the same distance from the midpoint of the central area A1, which helps to improve the uniformity of light mixing.

[0054] In a possible implementation, Figure 7 As shown, Figure 7 This is another partial schematic diagram of a display module provided by an embodiment of the present application; multiple light-emitting elements 12 are arranged in an array, and the projection of the annular protrusion 132 on the plane where the vertical substrate 11 is located is a rectangle, and the opposite sides of adjacent annular protrusions 132 are parallel to each other. On the one hand, it is convenient to manufacture; on the other hand, under the premise that the distance between adjacent diffuse light mixing parts is constant, the use of a rectangular design can make the area of ​​the central position area C surrounded by the four light-emitting elements 12 smaller, and the central position area C surrounded by four adjacent light-emitting elements 12 is a darker area. The small area of ​​the central position area C can make the overall brightness uniformity of the display module 1 higher.

[0055] When designing the diffuse light mixing structure 13, the size of the diffuse light mixing structure 13 can be matched with the light emitting structure according to the actual light type requirements. Specifically, the first height D of the annular protrusion 132 can be 0.1 to 0.2 mm, which is not particularly limited in this application. Please refer to Figure 3 Along the arrangement direction of the annular protrusions 132 , the radial width dimension L of the diffuse light mixing portion may be 1 to 1.5 mm.

[0056] In a possible implementation, Figure 8 As shown, Figure 8 It is a top view of another display module provided in an embodiment of the present application; a plurality of light-emitting elements 12 include a first light-emitting element 121 and a second light-emitting element 122, adjacent first light-emitting elements 121 are arranged to form a virtual quadrilateral S, the first light-emitting element 121 is located at the vertex of the virtual quadrilateral S, the second light-emitting element 122 is located at the center of the virtual quadrilateral S, and two adjacent vertex angles of adjacent virtual quadrilaterals S coincide with each other; the first light-emitting element 121 is arranged in a one-to-one correspondence with the diffuse light mixing part.

[0057] In the above embodiment, diffuse light mixing parts are respectively formed around the four first light-emitting elements 121 corresponding to each virtual quadrilateral S, that is, one virtual quadrilateral S corresponds to four diffuse light mixing parts, and the size d of the four diffuse light mixing parts along the side length direction of the virtual quadrilateral S can be 4.5 to 6 mm, and the spacing between adjacent first light-emitting elements 121, that is, the side length of the virtual quadrilateral S can be 2 to 3 mm, which is not particularly limited in the present application.

[0058] In the above embodiment, the light-emitting elements 12 in the display module 1 are arranged in rows and columns, and adjacent rows are staggered by a first preset distance so that the projections of the light-emitting elements 12 between adjacent rows along the column direction do not overlap. Among them, the spacing between adjacent light-emitting elements 12 in the same row is the same, and the first preset distance may be half of the spacing between adjacent light-emitting elements 12. Adjacent columns are staggered by a second preset distance so that the projections of the light-emitting elements 12 between adjacent columns along the row direction do not overlap. Among them, the spacing between adjacent light-emitting elements 12 in the same column is the same, and the second preset distance may be half of the spacing between adjacent light-emitting elements 12.

[0059] In the above embodiment, the light emitting elements 12 of the odd-numbered rows may be the first light emitting elements 121, and the light emitting elements 12 of the even-numbered rows may be the second light emitting elements 122. In the two adjacent odd-numbered rows and the even-numbered rows between the two adjacent odd-numbered rows, the adjacent first light emitting elements 121 are arranged to form a virtual quadrilateral S, the first light emitting elements 121 are located at the four vertices of the virtual quadrilateral S, and the second light emitting element 122 is located at the center of the virtual quadrilateral S. At this time, the first light emitting elements 121 can be arranged in a one-to-one correspondence with the diffuse light mixing part to mix the light emitted by each first light emitting element 121, thereby improving the brightness uniformity of each first light emitting element 121 and its surrounding area. At the same time, since the center position of the area surrounded by the four first light emitting elements 121 is far away from each first light emitting element 121, the light emitted by the first light emitting element 121 is weak, and the second light emitting element 122 can be used for fill light to improve the uniformity of display brightness.

[0060] In a possible implementation, Fig. 9 As shown, Fig. 9 It is another partial schematic diagram of a display module provided in an embodiment of the present application; the virtual quadrilateral S includes a first side L1 and a second side L2 relative to each other, and the second light-emitting element 122 and the first light-emitting element 121 corresponding to the two vertices of the first side are arranged in an equilateral triangle; the second light-emitting element 122 and the first light-emitting element 121 corresponding to the two vertices of the second side are arranged in an equilateral triangle.

[0061] In the above embodiment, the second light-emitting element 122 and the first light-emitting elements 121 corresponding to the two vertices of the first side are arranged in an equilateral triangle, and at the same time, the second light-emitting element 122 and the first light-emitting elements 121 corresponding to the two vertices of the second side are arranged in an equilateral triangle. At this time, the second light-emitting element 122 is at the same distance from each first light-emitting element 121, so that more uniform fill light can be provided to the area between the first light-emitting elements 121 located at the four vertices of the virtual quadrilateral S, so that it is located in the center of the area, thereby further improving the overall brightness uniformity.

[0062] In the above embodiment, if Fig.10 As shown, Fig.10 : is another partial schematic diagram of a display module provided by an embodiment of the present application; a diffuse light mixing portion may be provided around the second light emitting element 122, and the light mixing effect of the diffuse light mixing portion corresponding to the second light emitting element 122 may be provided to be smaller than the light mixing effect of the diffuse light mixing portion corresponding to the first light emitting element 121. Specifically, the projection area of ​​the diffuse light mixing portion corresponding to the second light emitting element 122 on the substrate 11 may be provided to be smaller than the projection area of ​​the diffuse light mixing portion corresponding to the first light emitting element 121 on the substrate 11. A specific method may be to set the number of annular protrusions 132 in the diffuse light mixing portion corresponding to the second light emitting element 122 to be smaller than the number of annular protrusions 132 in the diffuse light mixing portion corresponding to the first light emitting element 121. Alternatively, at the same time, the spacing between the annular protrusions 132 in the diffuse light mixing portion corresponding to the second light emitting element 122 may be provided to be larger than the spacing between the annular protrusions 132 in the diffuse light mixing portion corresponding to the first light emitting element 121, etc., which is not particularly limited in the present application.

[0063] In a possible implementation, Fig.11 As shown, Fig.11 It is another partial schematic diagram of a display module provided by an embodiment of the present application; the projection of the annular protrusion 132 on the plane perpendicular to the substrate 11 is a triangular ring.

[0064] When two adjacent rows or three columns, or three adjacent rows or two columns of light-emitting elements 12 are arranged in a triangle, the projection of the annular protrusion 132 on the plane where the vertical substrate 11 is located can be designed as a triangular ring to fully utilize the space between adjacent light-emitting elements 12, increase the total area of ​​the projection of the diffuse light mixing structure 13 on the substrate 11, and thereby improve the light mixing effect.

[0065] Specifically, in the above embodiment, among the three adjacent light-emitting elements 12, along the row and column direction, the diffuse light mixing structure 13 of the light-emitting element 12 located in the middle is located between the diffuse light mixing structures 13 of the other two light-emitting elements 12, so that the adjacent sides of the adjacent diffuse light mixing structures 13 can be parallel under the premise that the diffuse light mixing structures 13 are the same and only have different placement directions, thereby improving the space utilization between adjacent light-emitting elements 12, further reducing the blank rate of the area between adjacent diffuse light mixing structures 13, and further improving the overall uniformity of the display module 1. Among them, the fact that the diffuse light mixing structures 13 are the same and only have different placement directions can make the light mixing effect of each light-emitting element 12 similar, so as to reduce the brightness difference between various positions.

[0066] like Fig.12 and Fig.13 As shown, Fig.12 This is a simulation diagram of the display effect of a display module provided in comparison. Fig.13 This is a simulation diagram of the display effect of a display module provided in an embodiment of the present application; Fig.12 and Fig.13 A simulation comparison diagram of the display effects of the front and rear display modules with a diffuse light mixing structure; Fig.12 The arrangement of the light emitting element 12 is similar to Fig. 9 The arrangement of the light emitting elements 12 is the same as that in the present application and will not be repeated herein. Fig.12 In the display module shown, no diffusion light mixing structure 13 is provided on the side of the light emitting element 12 facing away from the substrate. In this case, the display module has the problem of uneven overall brightness. Fig.13 The arrangement of the light emitting element 12 is similar to Fig. 9 The arrangement of the light emitting elements 12 is the same as that in the present application and will not be repeated herein. Fig.13 In the display module shown in FIG. 1 , a diffusion light mixing structure 13 is disposed on the side of the light emitting element 12 facing away from the substrate, and the arrangement of the diffusion light mixing structure 13 is also as shown in FIG. Fig. 9 As shown, at this time, the diffusion light mixing structure 13 plays a role in mixing and diffusing the light emitted by the light emitting element 12, thereby improving the distribution range of the light emitted by each light emitting element 12, and significantly reducing the dark area between adjacent light emitting elements 12, thereby greatly improving the brightness uniformity of the display module.

[0067] In the display module 1 provided in the present application, the shape, size, number of protruding structures, etc. of the diffuse light mixing structure 13 can be adaptively adjusted according to the actual light type requirements and the arrangement of the light emitting elements 12, and the present application does not make any special limitations.

[0068] like Fig.14 As shown, Fig.14is a structural schematic diagram of a display device provided in an embodiment of the present application. The present application also provides a display device 2, comprising any one of the display modules 1 provided in the above-mentioned embodiments of the present application.

[0069] The display device 2 may be a mobile terminal such as a mobile phone or a tablet, or a fixed terminal such as a monitor or a television, or a wearable device such as a watch, which is not particularly limited in the present application.

[0070] The display device 2 adopts any one of the display modules 1 provided in the embodiments of the present application, thereby improving the uniformity of display brightness, further improving display quality, and achieving a better user experience.

[0071] According to the embodiments of the present application as above, these embodiments do not describe all the details in detail, nor do they limit the invention to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that those skilled in the art can make good use of the present application and the modifications based on the present application. The present application is only limited by the claims and their full scope and equivalents.

Claims

1. A display module, characterized in that: include: substrate; A plurality of light emitting elements disposed on one side of the substrate; a diffuse light mixing structure disposed on a side of the light emitting element away from the substrate, the diffuse light mixing structure comprising a base layer and a diffuse light mixing portion disposed on a side of the base layer away from the light emitting element, the diffuse light mixing portion comprising a plurality of annular protrusions nested in sequence, the plurality of annular protrusions in the diffuse light mixing portion being disposed around a same central region, the central region being provided with at least one light emitting element, the maximum distance between an end of the annular protrusion away from the base layer and the base layer along a thickness direction of the substrate being a first height, and the first height of the annular protrusion close to the central region in the diffuse light mixing portion being lower than the first height of the annular protrusion away from the central region; The first heights of the plurality of annular protrusions in the diffuse light mixing portion increase sequentially along a first direction, and the first direction is a direction from close to the central area to away from the central area.

2. The display module according to claim 1, characterized in that: The cross section of the annular protrusion along a direction perpendicular to its own extension direction is an isosceles triangle, and two base angles of the isosceles triangle are located on the base layer.

3. The display module according to claim 2, characterized in that: A ridge line of each annular protrusion away from the base layer is parallel to the base layer.

4. The display module according to claim 1, characterized in that: The annular protrusion partially overlaps with an orthographic projection of the light emitting element on the substrate.

5. The display module according to claim 1, characterized in that: The plurality of light emitting elements are arranged in an array, and the light emitting elements are disposed in one-to-one correspondence with the diffuse light mixing parts.

6. The display module according to claim 1, characterized in that: It comprises a plurality of light-emitting partitions, each of which comprises a plurality of the light-emitting elements, and each of the light-emitting partitions is arranged in a one-to-one correspondence with the diffuse light mixing part.

7. The display module according to claim 5 or 6, characterized in that: The orthographic projection of the annular protrusion on the plane where the substrate is located is a circular ring or a polygonal ring.

8. The display module according to claim 1, characterized in that: The plurality of light-emitting elements include a first light-emitting element and a second light-emitting element, adjacent first light-emitting elements are arranged to form a virtual quadrilateral, the first light-emitting element is located at the vertex of the virtual quadrilateral, the second light-emitting element is located at the center of the virtual quadrilateral, and two adjacent vertex angles of adjacent virtual quadrilaterals overlap respectively; The first light emitting elements are arranged in one-to-one correspondence with the diffuse light mixing parts.

9. The display module according to claim 8, characterized in that: The virtual quadrilateral includes a first side and a second side opposite to each other, and the second light-emitting element and the first light-emitting elements corresponding to the two vertices of the first side are arranged in an equilateral triangle; the second light-emitting element and the first light-emitting elements corresponding to the two vertices of the second side are arranged in an equilateral triangle.

10. The display module according to claim 8, characterized in that: The orthographic projection of the annular protrusion on the plane where the substrate is located is a triangular ring.

11. A display device, characterized in that: Comprising a display module as described in any one of claims 1-10.

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