Display module, display panel and display device

Abstract

The utility model discloses a display module, a display panel and a display device. The display module of one embodiment comprises a back plate, which comprises a side wall and a bottom wall; the light source is arranged on the bottom wall and comprises a substrate and a plurality of light-emitting parts arranged on the substrate, and the light-emitting parts comprise a central light-emitting part with light emitted to a central light-emitting area of the display module and an edge light-emitting part with light emitted to an edge light-emitting area close to the side wall; the first frame comprises an attaching face arranged on the side, facing the light source, of the side wall and a reflecting face closer to the light source than the attaching face, the vertical distance between any position on the reflecting face and the attaching face is a first distance, and the first distance is gradually increased in the direction from the light source to the bottom wall; the reflecting surface is used for reflecting part of light emitted to the edge light-emitting area by the edge light-emitting part to the edge compensation area of the display module, so that the brightness difference between the edge compensation area and the edge light-emitting area is reduced, and the edge compensation area is closer to the side wall than the edge light-emitting area.

Description

Technical Field

[0001] The utility model relates to the field of display technology. More specifically, it relates to a display module, a display panel and a display device. Background Art

[0002] With the popularization of displays, users are paying more and more attention to the display effect of displays, and various display problems are becoming increasingly prominent. The problem of darkening at the edges and corners of the display is particularly prominent. As a type of direct-lit display, the mini (micro) display is more affected by its own design, and the problem of edge darkening is more prominent than that of conventional displays. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a display module, a display panel and a display device to solve at least one of the problems existing in the prior art.

[0004] To achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The first aspect of the utility model provides a display module, including:

[0006] A backplane, including a side wall and a bottom wall;

[0007] A light source disposed on the bottom wall, including a substrate and a plurality of light-emitting components disposed on the substrate. The light-emitting components include a central light-emitting component whose light is emitted to the central light-emitting area of the display module and an edge light-emitting component whose light is emitted to the edge light-emitting area near the side wall;

[0008] A first frame, the first frame includes:

[0009] An attachment surface disposed on the surface of the side wall facing the light source; and;

[0010] A reflection surface closer to the light source than the attachment surface. The perpendicular distance from any position on the reflection surface to the attachment surface is a first distance, and the first distance gradually increases in the direction from the light source to the bottom wall. The reflection surface is used to reflect part of the light emitted by the edge light-emitting component to the edge compensation area of the display module, so as to reduce the brightness difference between the edge compensation area and the edge light-emitting area. The edge compensation area is closer to the side wall than the edge light-emitting area.

[0011] In an optional embodiment, the reflection surface at least includes an arc surface, and the supplementary angle of the emission angle formed by connecting the center of the light-emitting component with any reflection point on the reflection surface and the horizontal surface where the bottom wall is located is an acute angle.

[0012] In the direction from the top to the bottom of the side wall, the supplementary angle of the emission angle at different positions of the arc surface gradually decreases.

[0013] In an alternative embodiment, the reflecting surface further includes an inclined plane, and the arc surface is closer to the light source side than the inclined plane.

[0014] The supplementary angle of the light emission angle formed by the connection line between any reflection point on the inclined plane and the center of the light emitting member and the horizontal surface where the bottom wall is located is an acute angle.

[0015] In the direction from the top to the bottom of the side wall, the supplementary angle of the light emission angle corresponding to the inclined plane is greater than or equal to the supplementary angle of the light emission angle corresponding to the arc surface.

[0016] In an alternative embodiment, the reflecting surface further includes a micro-reflection structure, and the micro-reflection structure includes a plurality of continuous micro-curved surfaces or a plurality of continuous micro-inclined planes.

[0017] The supplementary angle of the light emission angle formed by the connection line between any reflection point on each micro-curved surface and the center of the light emitting member and the horizontal plane where the bottom wall is located is an acute angle. In the direction from the top to the bottom of the side wall, the supplementary angle of the light emission angle corresponding to the tangent line of each micro-curved surface gradually decreases.

[0018] Or

[0019] The supplementary angle of the light emission angle formed by the connection line between any reflection point on each micro-inclined plane and the center of the light emitting member and the horizontal surface where the bottom wall is located is an acute angle. In the direction from the top to the bottom of the side wall, the supplementary angle of the light emission angle corresponding to each micro-inclined plane gradually decreases.

[0020] In an alternative embodiment, the minimum low-incidence angle θ of the low-incidence point at the bottom edge of the reflecting surface close to the light source is:

[0021]

[0022] where α is the supplementary angle of the light emission angle formed by the connection line between any reflection point on the reflecting surface and the center of the light emitting member and the horizontal surface where the bottom wall is located;

[0023] a is the horizontal distance between the center of the light emitting member closest to the first frame in the light source and the bottom boundary of the reflecting surface;

[0024] b is the horizontal distance between the top boundary of the reflecting surface and the attaching surface;

[0025] D is the optical distance of the display module;

[0026] d is the total thickness of the display film material provided on the side of the light source away from the bottom wall.

[0027] In an alternative embodiment, the maximum low-incidence angle θ′ of the low-incidence point at the bottom edge of the reflecting surface close to the light source is:

[0028]

[0029] α is the supplementary angle of the emission angle formed by the line connecting any reflection point on the reflection surface and the center of the light-emitting component and the horizontal surface where the bottom wall is located;

[0030] a is the horizontal distance between the center of the light-emitting component closest to the first frame in the light source and the bottom boundary of the reflection surface;

[0031] b is the horizontal distance between the top boundary of the reflection surface and the attachment surface;

[0032] D is the optical distance of the display module;

[0033] d is the total thickness of the display film material provided on the side of the light source away from the bottom wall;

[0034] C is the designed size of the edge compensation area.

[0035] In an optional embodiment, the minimum high-incidence angle θ″ of the high-incidence point at the top edge of the reflection surface away from the light source is:

[0036]

[0037] α is the supplementary angle of the emission angle formed by the line connecting any reflection point on the reflection surface and the center of the light-emitting component and the horizontal surface where the bottom wall is located;

[0038] a is the horizontal distance between the center of the light-emitting component closest to the first frame in the light source and the bottom boundary of the reflection surface;

[0039] b is the horizontal distance between the top boundary of the reflection surface and the attachment surface;

[0040] D is the optical distance of the display module;

[0041] d is the total thickness of the display film material provided on the side of the light source away from the bottom wall;

[0042] C is the designed size of the edge compensation area.

[0043] In an optional embodiment, when the reflection surface includes a micro-reflection structure,

[0044] The low-incidence point corresponding to the bottom edge of the reflection surface close to the light source is arranged at the bottom end of the micro-reflection structure closest to the light source,

[0045] The high-incidence point corresponding to the top edge of the reflection surface away from the light source is arranged at the top end of the micro-reflection structure farthest from the light source,

[0046] At the junction position of adjacent micro-curved surfaces or adjacent micro-inclined surfaces in the micro-reflection structure, the corresponding incident angle is between the low-incidence maximum angle θ and the low-incidence minimum angle θ'.

[0047] In an alternative embodiment, when the reflecting surface includes an arc surface and a micro-reflection structure,

[0048] The low-incidence point corresponding to the bottom edge of the reflecting surface close to the light source is arranged at the bottom end of the arc surface or the micro-reflection structure close to the light source,

[0049] The high-incidence point corresponding to the top edge of the reflecting surface close to the light source is arranged at the top end of the micro-reflection structure or the arc surface close to the light source,

[0050] The incident angle corresponding to the junction position of the arc surface and the micro-reflection structure is between the low-incidence maximum angle θ and the low-incidence minimum angle θ'.

[0051] In an alternative embodiment, when the reflecting surface includes an inclined surface, an arc surface, and a micro-reflection structure,

[0052] The low-incidence point corresponding to the bottom edge of the reflecting surface close to the light source is arranged at the bottom end of the arc surface close to the light source or the bottom end of the micro-reflection structure,

[0053] The high-incidence point corresponding to the top edge of the reflecting surface close to the light source is arranged at the top end of the inclined surface, the micro-reflection structure, or the arc surface close to the light source,

[0054] The incident angle corresponding to the junction position of any two structural surfaces among the arc surface, the inclined surface, or the micro-reflection structure is between the low-incidence maximum angle θ and the low-incidence minimum angle θ'.

[0055] In an alternative embodiment, the first frame further includes:

[0056] A bottom surface located on the bottom wall;

[0057] A bearing surface disposed opposite to the bottom surface, the bearing surface connecting the attaching surface and the reflecting surface; and

[0058] An avoidance surface for avoiding the substrate, the avoidance surface connecting the bottom surface and the reflecting surface.

[0059] In an alternative embodiment, the display module further includes:

[0060] A display film disposed on the bearing surface;

[0061] A second frame, the second frame including a clamping portion for clamping the side wall of the back plate and a pressing portion for pressing the display film.

[0062] The second aspect of the present utility model provides a display panel, including the display module described in the first aspect of the present utility model.

[0063] The third aspect of the present utility model provides a display device, including the display module described in the first aspect of the present utility model.

[0064] The beneficial effects of the present utility model are as follows:

[0065] In the embodiment of the present utility model, by designing the structure of the reflection surface of the first frame facing the light source, the reflection surface is used to concentrate part of the light in the edge light-emitting area of the module to the edge compensation area to improve the edge brightness, reduce the brightness difference between the edge compensation area and the edge light-emitting area, and improve the display effect of the display module. Description of the Drawings

[0066] The following further details the specific embodiments of the present utility model in conjunction with the drawings.

[0067] Figure 1 Schematic diagram showing the light path propagation of the light source in related embodiments;

[0068] Figure 2 Schematic diagram showing the angle of the first frame ramp angle and the light path propagation of the reflected light in related embodiments;

[0069] Figure 3 Schematic diagram showing the structure of the display module in an alternative embodiment of the present utility model;

[0070] Figure 4 Schematic diagram showing the structure of the light source arrangement in the embodiment of the present utility model;

[0071] Figure 5 Showing Figure 4 Schematic diagram of the brightness distribution of the shown light source brightness;

[0072] Figure 6 Schematic diagram showing the brightness corresponding to different reflection surfaces in the embodiment of the present utility model;

[0073] Figure 7 Showing Figure 6 Schematic diagram of the brightness distribution of the shown different reflection surfaces;

[0074] Figure 8 Schematic diagram showing the structure of the reflection surface including an inclined surface and a curved surface in an embodiment of the present utility model;

[0075] Figure 9 Schematic diagram showing the structure of the reflection surface including a micro-reflection structure in an embodiment of the present utility model;

[0076] Figure 10Schematic diagram of the optical path of the maximum low-incidence angle at the low-incidence point according to an embodiment of the present invention;

[0077] Figure 11 Schematic diagram of the optical path of the minimum low-incidence angle at the low-incidence point according to an embodiment of the present invention;

[0078] Figure 12 Schematic diagram of the optical path at the high-incidence point according to an embodiment of the present invention. Detailed implementation manners

[0079] To more clearly illustrate the present invention, the present invention will be further described below in conjunction with embodiments and drawings. Similar components in the drawings are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not be used to limit the protection scope of the present invention.

[0080] The inventor has studied the problem of the edge dark area defect existing after the display module is lit. Since the light mixing distance OD of the mini display device is generally small, the light received at the edge position of the module is limited, resulting in the problem of edge darkening.

[0081] Refer to the Figure 1 shown light schematic diagram. As Figure 1 shown, the light source 20 includes a plurality of light-emitting members 21. The light-emitting members 21 emit three inclined light beams in the directions of A, C, and D and a B light beam in the vertical direction. Among them, the angle of the light beam in the D direction is much larger than the angles of the light beams in the A and C directions. At the position N1 in the central light-emitting area AA01, its luminous brightness is formed by mixing different inclined light beams in the A and C directions, two large-angle inclined light beams in the D direction from different light-emitting members, and the B light beam in the vertical direction.

[0082] In another example, at the position N2 in the central light-emitting area AA02, the position N2 is farther from the central area than the position N1. Its luminous brightness is formed by mixing different inclined light beams in the A and C directions, one large-angle inclined light beam in the D direction from a different light-emitting member, and the B light beam in the vertical direction.

[0083] For the position M1 in the edge light-emitting area AA02, its luminous brightness is formed by mixing different inclined light beams in the C direction, the B light beam in the vertical direction, and one large-angle inclined light beam in the D direction from a different light-emitting member.

[0084] For the position O of the edge dark area, its luminous brightness is formed by the mixture of the inclined light in the C direction and a large-angle inclined light in the D direction from different light-emitting components. Exemplarily, taking the brightness LB of the B light in the vertical direction as 50%, the brightness LA and LC of the inclined lights in the different A and C directions as 15%, and the brightness LC of the large-angle inclined light in the D direction as 10% as an example, the brightness at the position N1 of the central light-emitting area AA01 is LA + LB + LC + 2LD = 100%, the brightness at the position N2 of the central light-emitting area AA01 close to the edge light-emitting area AA02 is LA + LB + LC + LD = 90%, the brightness at the position M1 of the edge light-emitting area AA02 is LB + LC + LD = 75%, and the brightness at the position O of the edge compensation area AA03 is LC + LD = 35%. Therefore, the brightness difference between the edge and the central area is relatively large.

[0085] To improve the edge brightness, the following solutions for the display device exist in the related art:

[0086] ① By setting a reflecting surface 32 to reflect part of the light in the D direction to generate a D' light in the vertical direction, thereby compensating the brightness at the position O of the edge area. As Figure 2 shown, the slope angle of the reflecting surface 32 can also be reduced to increase the brightness at the position O of the edge area. The smaller the slope angle of the reflecting surface 32, the more the light reflected by the reflecting surface 32 can reach the edge dark area. However, this will cause the size of the first frame 30 with the reflecting surface to increase, resulting in a change in the overall design of the module and the need for a larger-sized backplane to be compatible. In addition, although improving the slope angle can improve the darkening problem in some areas, there is still a darkening problem of about 1 - 2 mm.

[0087] ② Sticking a reflecting sheet with a higher reflectivity on the slope surface of the first frame 30, but there is a reliability risk. The width of the first frame 30 itself is relatively narrow, making it difficult for manual attachment, and it is easy to cause problems such as missed attachment and inclination. In addition, the internal temperature is relatively high when the module is lit, and the reflecting sheet is prone to peeling. Moreover, since the light itself cannot be concentrated on the darkest area at the outermost edge, there is still a slight darkening of about 1 mm.

[0088] ③ Increasing the brightness of the light-emitting components at the edge position, but it has an impact on the overall power consumption of the machine. Since only the brightness of the edge part can be increased, the current needs to be increased accordingly, and the power consumption of the entire module rises.

[0089] In view of this, the embodiments of the present invention propose a display module, a display panel, and a display device to solve the above problems.

[0090] The first embodiment of the present invention proposes a display module. As Figure 3 and Figure 4 shown, the display module includes a backplane 10, a light source 20, and a first frame 30.

[0091] The backplane 10 includes a side wall 11 and a bottom wall 12;

[0092] The light source 20 is disposed on the bottom wall 12 and includes a substrate 22 and a plurality of light emitting elements 21 disposed on the substrate 22. The light emitting elements 21 include a central light emitting element 21A whose light is emitted to the central light emitting area AA01 of the display module and an edge light emitting element 21B whose light is emitted to the edge light emitting area AA02 near the side wall 11. As Figure 4 shows a 5*5 arrangement of the light emitting elements 21. As Figure 4 shown, the central light emitting area AA01, the edge light emitting area AA02, and the edge compensation area AA03 are arranged in sequence from the center to the outside.

[0093] Exemplarily, Figure 5 shows Figure 4 a schematic diagram of the brightness of the light source 20 shown. The brightness is shown as changing from orange-red to blue from high to low. From Figure 5 it can be seen that the areas of the blue and cyan regions in the edge region of the light source are larger. That is, the brightness of the edge region is lower and there is a brightness difference from the brightness at the central position. Exemplarily, the edge light emitting element 21B in this embodiment may be one or more light emitting elements 21 at the outermost side, which is specifically determined according to the design requirements of the actual display module.

[0094] In an alternative embodiment, as Figure 3 shown, the first frame 30 further includes:

[0095] A bottom surface 33 located on the bottom wall 12;

[0096] A bearing surface 34 disposed opposite to the bottom surface 33. The bearing surface 34 connects the attaching surface and the reflecting surface on the side of the side wall 11 facing the light source 20; and

[0097] An avoidance surface 35 that avoids the substrate 22. The avoidance surface 35 connects the bottom surface 33 and the reflecting surface 32.

[0098] In the embodiment of the present invention, the first frame 30 stands on the side wall 11 of the backplane 10, and the display film material is placed on the bearing surface 34, while there is a gap between the avoidance surface 35 and the bottom surface 33 of the backplane 10 to place the light source 20.

[0099] In an alternative embodiment, as Figure 3 shown, the display module further includes:

[0100] A display film material 40 disposed on the bearing surface 34;

[0101] The second frame 50 includes a clamping portion 51 that clamps the side wall 11 of the back plate 10 and a crimping portion 52 that presses against the display film 40.

[0102] In an embodiment of the present invention, the display module further includes a display screen 60, and the display screen 60 and the crimping portion 52 are adhesively fixed by an adhesive 70.

[0103] In an embodiment of the present invention, the first frame 30 and the second frame 50 can be made of metal materials or plastic materials, and those skilled in the art can design according to actual applications.

[0104] As Figure 3 shown, in an optional embodiment, the first frame 30 of the present invention includes:

[0105] An attachment surface 31 provided on the surface of the side wall 11 facing the light source 20; and;

[0106] A reflection surface 32 closer to the light source 20 than the attachment surface 31. The perpendicular distance from any position on the reflection surface 32 to the attachment surface 31 is a first distance L, and the first distance L gradually increases in the direction from the light source 20 to the bottom wall 12. That is, in the direction from the top to the bottom of the side wall 11, the first distance L gradually increases. The reflection surface 32 is used to reflect part of the light emitted by the edge light-emitting element 21B to the edge compensation area AA03 of the display module, so as to reduce the brightness difference between the edge compensation area AA03 and the edge light-emitting area AA02. The edge compensation area AA03 is closer to the side wall 11 than the edge light-emitting area AA02.

[0107] In an embodiment of the present invention, by designing the structure of the reflection surface 32 of the first frame 30 facing the light source 20, part of the light in the edge light-emitting area AA02 of the module is concentrated on the edge compensation area AA03 by the reflection surface 32 to improve the edge brightness, reduce the brightness difference between the edge compensation area AA03 and the edge light-emitting area AA02, and improve the display effect of the display module.

[0108] The specific ranges of the edge light-emitting area AA02 and the edge compensation area AA03 described in the present utility model are designed according to display modules of different sizes and structures. Exemplarily, the edge compensation area AA03 of the display module can be at the position 10 mm from the edge of the display area, that is, most of the display modules in the related art have a darkening phenomenon around 10 mm at the edge. The edge light-emitting area AA02 is a light area formed by one or more edge light-emitting members 21B within 10 mm from the edge of the display module towards the central light-emitting area AA01. In another embodiment, the edge brightness at the position of the edge light-emitting area AA02 close to the edge compensation area AA03 is 90% of the average brightness of the central light-emitting area AA01 to determine the area of the edge light-emitting area AA02. Those skilled in the art can design according to actual applications.

[0109] In an alternative embodiment, as Figure 3 shown, the reflecting surface 32 at least includes an arc surface 3230. The supplementary angle of the emission angle formed by connecting the center of any reflecting point on the reflecting surface 32 with the light-emitting member 21 and the horizontal surface where the bottom wall 12 is located is an acute angle.

[0110] In the direction from the top to the bottom of the side wall 11, that is, along the direction from the light source 20 to the bottom wall 12, the supplementary angles of the emission angles corresponding to different reflecting points of the arc surface 3230 gradually decrease. In this embodiment, the reflecting surface 32 is an arc-shaped concave structure, and the concave surface of the reflecting surface 32 faces the light source 20 side.

[0111] Figure 6 shows a brightness schematic diagram of different reflecting surface 32 structures of the first frame 30 added on both the left and right sides of the light source 20. As Figure 6 shown, the reflecting surface 32 of the first frame 30 on the left side of the light source 20 is an inclined plane, and the reflecting surface 32 of the first frame 30 on the right side of the light source 20 is an arc surface 3230. The Figure 6 brightness schematic diagram obtained after brightness simulation is as Figure 7 shown. The brightness is displayed from high to low as from orange-red to blue. Therefore, from Figure 7 it can be seen that the brightness improvement effect of the reflecting surface 32 with the arc-shaped structure on the right side is better than that of the inclined surface on the left side, and the brightness of the right edge area is greatly improved. Therefore, the reflecting surface of this embodiment can greatly improve the brightness of the edge compensation area and improve the display effect of the display module.

[0112] In a specific example, in combination with Figure 1As can be seen from the schematic diagram of the optical path shown, after using the reflecting surface compensation in this embodiment, the reflecting surface 32 reflects part of the light in the D direction to generate the D' light in the vertical direction, thereby compensating the brightness at the position O in the edge region O. Based on the compensation effect of the arc-shaped reflecting surface in this embodiment, the brightness at the position O in the edge compensation region AA03 is at least LC + LD + LD' = 45%. Moreover, in the structure where the reflecting surface is an arc surface, the light converging effect can be further improved. Therefore, the brightness of the edge compensation region AA03 is effectively enhanced.

[0113] In an alternative embodiment, as Figure 8 shown, the reflecting surface 32 further includes an inclined plane 3280. The arc surface 3230 is closer to the light source 20 than the inclined plane 3280. The supplementary angle of the light-emitting angle formed by connecting the center of the light-emitting element 21 with any reflection point on the inclined plane 3280 and the horizontal surface where the bottom wall 12 is located is an acute angle. In the direction from the top to the bottom of the side wall 11, that is, along the direction from the light source 20 to the bottom wall 12, the supplementary angle of the light-emitting angle corresponding to the inclined plane 3280 is greater than or equal to the supplementary angle of the light-emitting angle corresponding to the arc surface 3230.

[0114] That is to say, the reflecting surface 32 in this embodiment includes a composite structure of an inclined plane 3280 and an arc surface 3230. In this embodiment, the inclined plane 3280 is located above and the arc surface 3230 is located below. In this embodiment, the arc surface 3230 is arranged closer to the light source 20, and the better light reflection performance of the arc surface 3230 is utilized to achieve the optimal edge brightness compensation effect.

[0115] In an alternative embodiment, as Figure 9 shown, the reflecting surface 32 further includes a micro-reflection structure 3290. The micro-reflection structure 3290 includes a plurality of continuous micro-curved surfaces or a plurality of continuous micro-inclined surfaces. When the micro-reflection structure 3290 of the reflecting surface 32 is a micro-curved surface, the supplementary angle of the light-emitting angle formed by connecting the center of the light-emitting element 21 with any reflection point on each micro-curved surface and the horizontal plane where the bottom wall 12 is located is an acute angle. In the direction from the top to the bottom of the side wall 11, that is, along the direction from the light source 20 to the bottom wall 12, the supplementary angle of the light-emitting angle corresponding to any reflection point on each micro-curved surface gradually decreases after connecting with the center of the light-emitting element 21.

[0116] The micro-reflection structure 3290 in this embodiment is a plurality of small curved surfaces, and the plurality of small curved surfaces can be fitted into an arc. When the inclined light irradiates on each small curved surface or a small inclined surface, each small curved surface or each small inclined surface will reflect the light, so as to emit the light in the edge light-emitting region AA02 to the edge compensation region AA03, thereby realizing the light compensation in the edge region.

[0117] In another optional embodiment, when the micro-reflection structure 3290 of the reflecting surface 32 is a micro-inclined surface, the supplementary angle of the light-emitting angle formed by the connection line between any reflection point on each micro-inclined surface and the center of the light-emitting member 21 and the horizontal surface where the bottom wall 12 is located is an acute angle. In the direction from the top to the bottom of the side wall 11, that is, along the direction from the light source 20 to the bottom wall 12, the supplementary angle of the light-emitting angle corresponding to each micro-inclined surface gradually decreases.

[0118] The micro-reflection structure 3290 of this embodiment is multiple small curved surfaces or multiple small inclined surfaces. The multiple small inclined surfaces can be fitted into an arc. When the inclined light irradiates on each small curved surface or a small inclined surface, each small curved surface or each small inclined surface will reflect the light, so as to emit the light in the edge light-emitting area AA02 to the edge compensation area AA03, thereby realizing the light compensation in the edge area.

[0119] Now, the structural design of the reflecting surface 32 of this embodiment will be described.

[0120] In an optional embodiment, as Figure 10 shown, taking the horizontal plane where the bottom of the light-emitting member 21 (the bottom surface close to the substrate side) is located as the x-axis, taking the vertical plane at the intersection position of the bearing surface 34 and the reflecting surface 32 as the y-axis, and taking the center of the coordinate system at the intersection position of the vertical plane and the horizontal plane at the bottom surface, the maximum low-incidence angle θ of the low-incidence point at the bottom edge of the reflecting surface 32 close to the light source 20 is:

[0121]

[0122] where α is the supplementary angle of the light-emitting angle formed by the connection line between any reflection point on the reflecting surface 32 and the center of the light-emitting member 21 and the horizontal surface where the bottom wall 12 is located;

[0123] a is the horizontal distance between the center of the light-emitting member closest to the first frame 30 in the light source 20 and the bottom boundary of the reflecting surface 32;

[0124] b is the horizontal distance between the top boundary of the reflecting surface 32 and the attaching surface 31;

[0125] D is the optical distance of the display module;

[0126] d is the total thickness of the display film 40 provided on the side of the light source 20 away from the bottom wall 12.

[0127] As Figure 10 shown, corresponding to Figure 10 the β angle shown, corresponding to Figure 10 the β' angle shown, corresponding toFigure 10 The α' angle shown. The low-incidence point shown in this embodiment refers to the bottom boundary point at the edge position near the light source 20 at the very bottom of the reflecting surface 32. The maximum low-incidence angle θ refers to the light ray at the maximum position of the light-emitting angle of the edge light-emitting area AA02 that can be reflected by this boundary point to the edge position near the leftmost side of the edge compensation area AA03.

[0128] With this setting, based on the known total thickness d of the display film 40, the optical distance D, the horizontal distance b between the top boundary of the reflecting surface 32 and the attaching surface 31, the horizontal distance a between the center of the light-emitting element 21 closest to the first frame 30 in the light source 20 and the bottom boundary of the reflecting surface 32, and the complementary angle α of the light-emitting angle, it can be ensured that the light ray at the maximum position of the light-emitting angle of the light source 20 at the outermost edge position is concentrated in the edge compensation area AA03 after passing through the reflecting surface 32 to achieve the optimal compensation effect.

[0129] In an alternative embodiment, as Figure 11 shown, taking the horizontal plane where the bottom of the light-emitting element 21 (the bottom surface close to the substrate side) is located as the x-axis, the vertical plane at the intersection position of the bearing surface 34 and the reflecting surface 32 as the y-axis, and the coordinate center at the intersection position of this vertical plane and the horizontal plane on the bottom surface, the minimum low-incidence angle θ' of the low-incidence point at the bottom edge of the reflecting surface 32 close to the light source 20 is:

[0130]

[0131] α is the complementary angle of the light-emitting angle formed by the connection line between any reflection point on the reflecting surface 32 and the center of the light-emitting element 21 and the horizontal surface where the bottom wall 12 is located;

[0132] a is the horizontal distance between the center of the light-emitting element 21 closest to the first frame 30 in the light source 20 and the bottom boundary of the reflecting surface 32;

[0133] b is the horizontal distance between the top boundary of the reflecting surface 32 and the attaching surface 31;

[0134] D is the optical distance of the display module;

[0135] d is the total thickness of the display film 40 provided on the side of the light source 20 away from the bottom wall 12;

[0136] C is the designed size of the edge compensation area AA03.

[0137] As Figure 11 shown, Corresponding to Figure 11 the γ angle shown, Corresponding to Figure 11The γ' angle shown corresponds to Figure 11 the angle of α″ shown. The low incident point shown in this embodiment refers to the bottom boundary point at the edge position near the light source 20 at the bottommost part of the reflection surface 32. The low incident minimum angle θ' refers to the angle at which the boundary point can reflect the light at the maximum position of the emission angle of the edge light-emitting region AA02 to the edge position near the rightmost side of the edge compensation region AA03.

[0138] With this setting, based on the known total thickness d of the display film 40, the optical distance D, the horizontal distance b between the top boundary of the reflection surface 32 and the attachment surface 31, the horizontal distance a between the center of the light-emitting element 21 closest to the first frame 30 in the light source 20 and the bottom boundary of the reflection surface 32, the emission angle supplementary angle α, and the designed size C of the edge compensation region AA03, it can be ensured that the light at the maximum position of the emission angle of the light source 20 at the outermost edge position is concentrated into the edge compensation region AA03 through the reflection surface 32 to achieve the optimal compensation effect.

[0139] Based on the above relationship between the low incident minimum angle θ' and the low incident maximum angle θ, in this embodiment, the value of the low incident angle can be obtained according to different known structures. According to different design requirements, different widths of light compensation in the edge compensation region AA03 can be achieved by designing different angles of the low incident angle, thereby further flexibly changing the width range of the light compensation region on the basis of improving the display effect in the edge region and enhancing the flexibility of light compensation.

[0140] In an alternative embodiment, as Figure 12 shown, taking the horizontal plane where the bottom of the light-emitting element 21 (the bottom surface close to the substrate side) is located as the x-axis, the vertical plane at the intersection position of the bearing surface 34 and the reflection surface 32 as the y-axis, and the coordinate center at the intersection position of the vertical plane and the horizontal plane on the bottom surface, the high incident minimum angle θ″ of the high incident point at the top edge of the reflection surface 32 far from the light source 20 is:

[0141]

[0142] α is the emission angle supplementary angle formed by the line connecting any reflection point on the reflection surface 32 and the center of the light-emitting element 21 and the horizontal surface where the bottom wall 12 is located;

[0143] a is the horizontal distance between the center of the light-emitting element 21 closest to the first frame 30 in the light source 20 and the bottom boundary of the reflection surface 32;

[0144] b is the horizontal distance between the top boundary of the reflection surface 32 and the attachment surface 31;

[0145] D is the optical distance of the display module;

[0146] d is the total thickness of the display film 40 provided on the side of the light source 20 away from the bottom wall 12;

[0147] C is the designed size of the edge compensation area AA03.

[0148] Based on the above Figure 12 As described in the light path diagram, the minimum light-emitting angle of the edge light-emitting member can be obtained. To ensure that the light rays with the minimum emission angle are reflected by the reflection surface 32 of the topmost inclined surface or arc surface of the first frame 30 and are within the edge compensation area AA03, it is designed that the high-incidence angle at the high-incidence point is greater than the minimum high-incidence angle θ″ at the same height.

[0149] The high-incidence point shown in this embodiment refers to the top boundary point at the edge position close to the light source 20 at the topmost of the reflection surface 32, and the minimum high-incidence angle θ″ refers to the light rays at the minimum light-emitting angle position of the edge light-emitting area AA02 can be reflected by this top boundary point to the edge position close to the rightmost side of the edge compensation area AA03.

[0150] Through this setting, based on the known total thickness d of the display film 40, the optical distance D, the horizontal distance b between the top boundary of the reflection surface 32 and the attachment surface 31, the horizontal distance a between the center of the light-emitting member 21 closest to the first frame 30 in the light source 20 and the bottom boundary of the reflection surface 32, the supplementary angle α of the light-emitting angle, and the designed size C of the edge compensation area AA03, it can be ensured that the light rays emitted from the light source 20 at the outermost edge position with the minimum light-emitting angle can pass through the reflection surface 32 and concentrate the light rays into the edge compensation area AA03 to achieve the optimal compensation effect.

[0151] Based on the above design formula and light path diagram of the minimum high-incidence angle θ″, in this embodiment, the value of the high-incidence angle can be obtained according to different known structures. According to different design requirements, different widths of light compensation in the edge compensation area AA03 can be achieved according to different angles of the high-incidence angle. Thus, on the basis of improving the display effect of the edge area, the width range of the light compensation area can be further flexibly changed to enhance the flexibility of light compensation.

[0152] As Figures 10 to 12 shown, when the reflection surface 32 includes a complete continuous circular arc structure,

[0153] In an alternative embodiment, as Figure 10 shown, the tangent equation passing through the bottom boundary point A of the reflection surface 32 and the intersection point A1 of the reflection surface 32 and the X-axis is:

[0154] (y - Y1) / (Y0 - Y1) = (x - X0) / (X0 - X1),

[0155] And the bottom boundary point A can be calculated according to the known parameters: X0 = a - b,

[0156] Y1 = 0.

[0157] In an alternative embodiment, as Figure 12 shown, the tangent equation passing through the top boundary point B(X0′, Y0′) of the reflecting surface 32 and the intersection point B1(X1′, Y1′) of the tangent at the position of the top boundary point B and the X-axis is:

[0158] (y - Y1′) / (Y0′ - Y1′) = (x - X0′) / (X0′ - X1′),

[0159] The intersection points B and B1 can be calculated according to the above parameters,

[0160] Y0′ = D, X0′ = 0

[0161] Y1′ = 0.

[0162] Based on the design of the tangent equations of the above top boundary point and bottom boundary point, the position of the center of the circle of the reflecting surface 32 can be determined according to the intersection of the normal of the tangent equation of the top boundary point and the normal of the tangent equation of the bottom boundary point, and the arc curvature of the reflecting surface 32 can be calculated, thereby obtaining the arc structure of the reflecting surface 32.

[0163] In an alternative embodiment, as Figure 8 shown, when the reflecting surface 32 includes an inclined surface and a curved surface structure, the low-incidence point is determined according to the low-incidence minimum angle θ′ and the low-incidence maximum angle θ, the high-incidence point is determined according to the high-incidence minimum angle θ″, and the intersection point of the inclined surface and the curved surface lower than the high-incidence point is determined between the low-incidence point and the high-incidence point, and the incident angle corresponding to the intersection point is between the low-incidence maximum angle θ and the low-incidence minimum angle θ′. The center of the circle and the curvature of the curved surface are determined between the intersection point and the low-incidence point, thereby obtaining the hybrid structure of the inclined surface and the curved surface structure of the reflecting surface 32 in this embodiment.

[0164] In an alternative embodiment, as Figure 9 shown, when the reflecting surface 32 includes the micro-reflection structure 3290, the low-incidence point corresponding to the bottom edge of the reflecting surface 32 close to the light source 20 is set at the bottom end of the micro-reflection structure 3290 closest to the light source 20, and the high-incidence point corresponding to the top edge of the reflecting surface 32 far from the light source 20 is set at the top end of the micro-reflection structure 3290 farthest from the light source 20,

[0165] At the junction positions of adjacent micro - curved surfaces or adjacent micro - inclined surfaces in the micro - reflection structure 3290, the corresponding incident angles are all between the low - incidence maximum angle θ and the low - incidence minimum angle θ′. That is, the incident angles corresponding to the junction points of adjacent micro - curved surfaces or adjacent micro - inclined surfaces can all reflect the light at this position to the edge compensation area AA03, thereby improving the compensation effect of the edge compensation area AA03.

[0166] In an alternative embodiment, when the reflecting surface 32 includes the arc surface 3230 and the micro - reflection structure 3290,

[0167] The low - incidence point corresponding to the bottom edge of the reflecting surface 32 close to the light source 20 is set at the bottom end of the arc surface 3230 or the micro - reflection structure 3290 close to the light source 20.

[0168] The high - incidence point corresponding to the top edge of the reflecting surface 32 close to the light source 20 is set at the top end of the micro - reflection structure 3290 or the arc surface 3230 close to the light source 20.

[0169] The incident angle corresponding to the junction position between the arc surface 3230 and the micro - reflection structure is between the low - incidence maximum angle θ and the low - incidence minimum angle θ′. That is, the incident angles corresponding to the junction points of adjacent micro - curved surfaces or adjacent micro - inclined surfaces can all reflect the light at this position to the edge compensation area AA03, thereby improving the compensation effect of the edge compensation area AA03.

[0170] In an alternative embodiment, when the reflecting surface 32 includes the inclined plane 3280, the arc surface 3230, and the micro - reflection structure 3290,

[0171] The low - incidence point corresponding to the bottom edge of the reflecting surface 32 close to the light source 20 is set at the bottom end of the arc surface 3230 or the bottom end of the micro - reflection structure 3290 close to the light source 20.

[0172] The high - incidence point corresponding to the top edge of the reflecting surface 32 close to the light source 20 is set at the top end of the inclined plane 3280, the micro - reflection structure 3290, or the arc surface 3230 close to the light source 20.

[0173] The incident angle corresponding to the junction position between any two structural surfaces of the arc surface 3230, the inclined plane 3280, or the micro - reflection structure 3290 is between the low - incidence maximum angle θ and the low - incidence minimum angle θ′. That is, the incident angles corresponding to the junction points of adjacent micro - curved surfaces or adjacent micro - inclined surfaces can all reflect the light at this position to the edge compensation area AA03, thereby improving the compensation effect of the edge compensation area AA03.

[0174] That is to say, based on the angle design of the above-mentioned embodiments of the present embodiment regarding the lowest incident maximum angle θ, the lowest incident minimum angle θ′, and the highest incident minimum angle θ″, the reflecting surface 32 of the present embodiment can have various structural designs. For example, the reflecting surface 32 is a single arc surface 3230 structure, a composite structure of an inclined slope and a curved surface, a micro-reflection structure 3290, a composite structure of an arc surface 3230 and a micro-reflection structure 3290, a composite structure of an inclined plane 3280, an arc surface 3230, and a micro-reflection structure 3290, etc. Through the above settings, the problem of edge darkening of the display module can be improved, and part of the light of the light source 20 at the edge position of the display module is concentrated in the edge compensation area AA03 to improve the edge brightness.

[0175] Another embodiment of the present invention provides a display panel, which includes the display module described in the above embodiments of the present invention.

[0176] Another embodiment of the present invention provides a display device, which includes the display module of the present embodiment. Among them, the display device can be an electronic paper, a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, or any product or component with a display function. This embodiment does not make any limitations in this regard.

[0177] In the description of the present invention, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variation thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0178] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation manners here. Any obvious changes or modifications derived from the technical solutions of the present invention still fall within the protection scope of the present invention.

Claims

1. A display module, characterized in that, The display module includes: a backplane, including a sidewall and a bottom wall; a light source disposed on the bottom wall, including a substrate and a plurality of light-emitting elements disposed on the substrate, the light-emitting elements including a central light-emitting element whose light is emitted to the central light-emitting area of the display module and an edge light-emitting element whose light is emitted to the edge light-emitting area near the sidewall; a first frame, the first frame including: an attachment surface disposed on the surface of the sidewall facing the light source; and; a reflecting surface closer to the light source than the attachment surface, the perpendicular distance from any position on the reflecting surface to the attachment surface being a first distance, the first distance gradually increasing in the direction from the light source to the bottom wall, the reflecting surface being configured to reflect part of the light emitted by the edge light-emitting element to the edge light-emitting area to the edge compensation area of the display module, so as to reduce the brightness difference between the edge compensation area and the edge light-emitting area, the edge compensation area being closer to the sidewall than the edge light-emitting area.

2. The display module according to claim 1, characterized in that, The reflecting surface at least includes an arc surface, and the supplementary angle of the emission angle formed by connecting the center of the light-emitting element with any reflection point on the reflecting surface and the horizontal surface where the bottom wall is located is an acute angle. In the direction from the top to the bottom of the sidewall, the supplementary angle of the emission angle of the reflection points at different positions of the arc surface gradually decreases.

3. The display module according to claim 2, wherein The reflecting surface further includes an inclined plane, and the arc surface is closer to the light source than the inclined plane. The supplementary angle of the emission angle formed by connecting the center of the light-emitting element with any reflection point on the inclined plane and the horizontal surface where the bottom wall is located is an acute angle. In the direction from the top to the bottom of the sidewall, the supplementary angle of the emission angle corresponding to the inclined plane is greater than or equal to the supplementary angle of the emission angle corresponding to the arc surface.

4. The display module according to any one of claims 1 to 3, characterized in that, The reflecting surface further includes a micro-reflection structure, the micro-reflection structure including a plurality of continuous micro-curved surfaces or a plurality of continuous micro-inclined surfaces. For each micro-curved surface, the supplementary angle of the emission angle formed by connecting the center of the light-emitting element with any reflection point on the tangent plane of the micro-curved surface and the horizontal plane where the bottom wall is located is an acute angle, and in the direction from the top to the bottom of the sidewall, the supplementary angle of the emission angle corresponding to the tangent of each micro-curved surface gradually decreases; or For each micro-inclined surface, the supplementary angle of the emission angle formed by connecting the center of the light-emitting element with any reflection point on the micro-inclined surface and the horizontal surface where the bottom wall is located is an acute angle, and in the direction from the top to the bottom of the sidewall, the supplementary angle of the emission angle corresponding to each micro-inclined surface gradually decreases.

5. The display module according to claim 4, wherein The minimum low-incidence angle θ of the low-incidence point at the bottom edge of the reflecting surface close to the light source is: where α is the supplementary angle of the emission angle formed by connecting the center of the light-emitting element with any reflection point on the reflecting surface and the horizontal surface where the bottom wall is located; a is the horizontal distance between the center of the light-emitting element closest to the first frame in the light source and the bottom boundary of the reflecting surface; b is the horizontal distance between the top boundary of the reflecting surface and the attachment surface; D is the optical distance of the display module; d is the total thickness of the display film disposed on the side of the light source away from the bottom wall.

6. The display module according to claim 5, wherein The maximum low-incidence angle θ′ of the low-incidence point at the bottom edge of the reflecting surface close to the light source is: where C is the design size of the edge compensation area.

7. The display module according to claim 6, wherein The high-incidence minimum angle θ″ of the high-incidence point at the top edge of the reflecting surface far from the light source is as follows:

8. The display module according to claim 7, wherein When the reflecting surface includes a micro-reflecting structure, The low-incidence point corresponding to the bottom edge of the reflecting surface close to the light source is arranged at the bottom end of the micro-reflecting structure closest to the light source, The high-incidence point corresponding to the top edge of the reflecting surface far from the light source is arranged at the top end of the micro-reflecting structure farthest from the light source, The incident angle corresponding to the junction position between adjacent micro-curved surfaces or adjacent micro-inclined surfaces in the micro-reflecting structure is between the low-incidence maximum angle θ and the low-incidence minimum angle θ′.

9. The display module according to claim 7, wherein When the reflecting surface includes an arc surface and a micro-reflecting structure, The low-incidence point corresponding to the bottom edge of the reflecting surface close to the light source is arranged at the bottom end of the arc surface or the micro-reflecting structure close to the light source, The high-incidence point corresponding to the top edge of the reflecting surface close to the light source is arranged at the top end of the micro-reflecting structure or the arc surface close to the light source, The incident angle corresponding to the junction position between the arc surface and the micro-reflecting structure is between the low-incidence maximum angle θ and the low-incidence minimum angle θ′.

10. The display module according to claim 7, wherein When the reflecting surface includes an inclined surface, an arc surface, and a micro-reflecting structure, The low-incidence point corresponding to the bottom edge of the reflecting surface close to the light source is arranged at the bottom end of the arc surface close to the light source or the bottom end of the micro-reflecting structure, The high-incidence point corresponding to the top edge of the reflecting surface close to the light source is arranged at the top end of the inclined surface, the micro-reflecting structure, or the arc surface close to the light source, The incident angle corresponding to the junction position between any two structural surfaces of the arc surface, the inclined surface, or the micro-reflecting structure is between the low-incidence maximum angle θ and the low-incidence minimum angle θ′.

11. The display module according to claim 1, wherein, The first frame further includes: A bottom surface located on the bottom wall; A bearing surface disposed opposite to the bottom surface, the bearing surface connecting the attaching surface and the reflecting surface; and An avoidance surface for avoiding the substrate, the avoidance surface connecting the bottom surface and the reflecting surface.

12. The display module according to claim 11, wherein The display module further includes: A display film disposed on the bearing surface; A second frame, the second frame including a clamping portion for clamping the side wall of the back plate and a pressing portion for pressing the display film.

13. A display panel, characterized in that, The display panel includes the display module according to any one of claims 1 to 12.

14. A display device, characterized in that, The display device includes the display module according to any one of claims 1 to 12.

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