Display module and display device

Abstract

The embodiment of the invention provides a display module and a display device. The display module comprises a display panel and a backlight unit, and the display panel comprises a display area and a frame area; the backlight unit comprises a light guide plate and a light-emitting assembly, and the light-emitting assembly is located on one side of the light guide plate. The light guide plate comprises a first area, and the first area is overlapped with the display area in the direction perpendicular to the plane where the display panel is located. The first area further comprises a first sub-area, the first sub-area is located on the side, away from the light-emitting assembly, of the hollowed-out part in the first direction, and the first direction is the direction where the light-emitting assembly is adjacent to the light guide plate. The light guide plate further comprises a light diffusion structure, and the light diffusion structure is used for compensating light to the first sub-region. The light diffusion structure is used for compensating the light to the first sub-area, so that the amount of the light received by the first sub-area in the light guide plate is increased, the brightness difference between the first sub-area and other areas in the light guide plate is reduced, the brightness of the area, overlapped with the first sub-area, in the display area is improved, and the display effect of the display panel is improved.

Description

Technical Field

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

[0002] In the display device, there are hollow areas for preparing cameras, sound receiving holes, etc., and in order to increase the screen-to-body ratio, the display area can be arranged around the hollow area. However, there is a darker area behind the hollow position relative to the entire display panel. This is because the light generated by the backlight unit cannot be normally provided in this area, resulting in dark shadows, causing uneven display of the display panel, and affecting the display work of the display device. Summary of the invention

[0003] In view of this, the present application provides a display module and a display device to solve the above problems.

[0004] In a first aspect, an embodiment of the present application provides a display module, including: The display panel comprises a display area and a frame area, wherein the frame area at least partially surrounds the display area; A backlight unit, the backlight unit is located on one side of the backlight surface of the display panel, the backlight unit includes a light guide plate and a light emitting component, the light emitting component is located on one side of the light guide plate along a direction parallel to the plane where the backlight unit is located, and the light guide plate includes a hollow portion; The light guide plate includes a first area, and the first area overlaps with the display area along a direction perpendicular to the plane where the display panel is located; the first area also includes a first sub-area, and the first sub-area is located on a side of the hollow portion away from the light-emitting component in the first direction, and the first direction is a direction in which the light-emitting component is adjacent to the light guide plate; The light guide plate further includes a light diffusion structure, and the light diffusion structure is used to compensate the light to the first sub-area.

[0005] In a second aspect, an embodiment of the present application provides a display device, comprising a display module as provided in the first aspect.

[0006] In an embodiment of the present application, in an embodiment of the present application, a light guide plate is provided including a light diffusion structure, and the light diffusion structure is used to compensate the light to the first sub-area by reflection or the like, which is beneficial to increase the amount of light received by the first sub-area in the light guide plate, reduce the impact of uneven light distribution caused by the light being blocked by the hollow portion and unable to be smoothly transmitted to the first sub-area, and improve the uniformity of light distribution on the light guide plate, thereby reducing the brightness difference between the first sub-area and other areas in the light guide plate, thereby improving the display brightness uniformity on the display panel and the display effect of the display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments 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 paying creative labor.

[0008] Figure 1 A schematic plan view of a display module provided in an embodiment of the present application; Figure 2 A schematic plan view of a backlight unit provided in an embodiment of the present application; Figure 3 A method provided in the embodiment of the present application Figure 2 Schematic diagram of the cross section along the A-A' direction; Figure 4 A schematic plan view of another backlight unit provided in an embodiment of the present application; Figure 5 A method provided in the embodiment of the present application Figure 4 A partial plan view of the middle area E1; Figure 6 A method provided in the embodiment of the present application Figure 2 A partial plan view of the middle area E2; Figure 7 A schematic plan view of another backlight unit provided in an embodiment of the present application; Figure 8 A schematic plan view of another backlight unit provided in an embodiment of the present application; Fig. 9 A schematic plan view of another backlight unit provided in an embodiment of the present application; Fig.10 Another embodiment provided in this application Figure 2 Schematic diagram of the cross section along the A-A' direction; Fig.11 A schematic plan view of another backlight unit provided in an embodiment of the present application; Fig.12 A schematic plan view of another backlight unit provided in an embodiment of the present application; Fig.13 A schematic plan view of another backlight unit provided in an embodiment of the present application; Fig.14 A schematic plan view of a display device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0009] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0010] It should be clear that the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0011] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0012] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0013] In the description of this specification, it is necessary to understand that the words such as "substantially", "approximately", "approximately", "about", "roughly", "substantially" and the like described in the claims and embodiments of the present application refer to what can be generally recognized within a reasonable process operation range or tolerance range, rather than an exact value.

[0014] It should be understood that although the terms first, second, etc. may be used to describe zones, partial light-emitting components, sub-reflective sheets, etc. in the embodiments of the present application, these should not be limited to these terms. These terms are only used to distinguish zones, partial light-emitting components, sub-reflective sheets, etc. from each other. For example, without departing from the scope of the embodiments of the present application, the first zone may also be referred to as the second zone, and similarly, the second zone may also be referred to as the first zone. The applicant of this case has provided a solution to the problems existing in the prior art through careful and in-depth research.

[0015] Figure 1 A schematic diagram of the structure of a display module provided in an embodiment of the present application is shown in FIG. Figure 2 A schematic plan view of a backlight unit provided in an embodiment of the present application, Figure 3 A method provided in the embodiment of the present application Figure 2 Schematic diagram of the cross section along the A-A' direction. The present application embodiment provides a display module 100, such as Figure 1 As shown, the display module 100 includes a display panel 200 , and the display panel 200 includes a display area A1 and a frame area A2 , and the frame area A2 at least partially surrounds the display area A1 .

[0016] Combination Figure 2 , Figure 3As shown, the display module 100 also includes a backlight unit 300, which is located on one side of the backlight surface of the display panel 200. The backlight unit 300 includes a light guide plate 10 and a light emitting component 20. The light emitting component 20 is located on one side of the light guide plate 10 in a direction parallel to the plane where the backlight unit 300 is located, and the light guide plate 10 includes a hollow portion 101. The backlight unit 300 can be used to provide a backlight source for the display panel 200 to achieve the light output needs of the display panel 200. In the embodiment of the present application, the display panel 200 is taken as a liquid crystal display panel for example.

[0017] The light guide plate 10 is located on one side of the light emitting component 20. Optionally, along a direction parallel to the plane where the backlight unit 300 is located, the position of the light emitting component 20 is at least partially parallel to the light guide plate 10, and the light guide plate 10 can receive the light generated by the light emitting component 20. When the light emitting component 20 generates light, the light projected into the light guide plate 10 can be diffusely reflected in a direction parallel to the light emitting component 20 pointing to the light guide plate 10, so that the light is diffusely reflected from the side of the light guide plate 10 close to the light emitting component 20 to the part far away from the light emitting component 20, thereby achieving the light being distributed as evenly as possible on the entire surface of the light guide plate 10. After the light is more distributed in the light guide plate 10, it provides a light source for the display panel 200 more evenly.

[0018] Combination Figure 1-Figure 3 As shown, the light guide plate 10 includes a first area 10A, and along a direction perpendicular to the plane where the display panel 200 is located, the first area 10A overlaps with the display area A1, which is conducive to the light guide plate 10 smoothly providing light to the display area A1 of the display panel 200 in a direction perpendicular to the plane where the display panel 200 is located. The first area 10A also includes a first sub-area 10A1, and the first sub-area 10A1 is located on a side of the hollow portion 101 away from the light emitting component 20 in the first direction X1, and the first direction X1 is the direction in which the light emitting component 20 is adjacent to the light guide plate 10.

[0019] In the related art, the hollow portion passes through the light guide plate, and the first sub-area and the light-emitting component are located on opposite sides of the hollow portion in the first direction. Then, when the light generated by the light-emitting component is diffusely reflected on the light guide plate, the path of the light diffusely reflected to the first sub-area is partially cut off due to the presence of the hollow portion, and the light in the first sub-area is less than that in other areas, resulting in less light in the first sub-area, which in turn causes the partial display area overlapping with the first sub-area in the direction perpendicular to the plane where the display panel is located to receive less light source, thereby causing uneven display of the display panel.

[0020] Therefore, in order to solve the above problems, Figure 2As shown, the light guide plate 10 of the embodiment of the present application also includes a light diffusion structure 102, which can be used to compensate light to the first sub-area 10A1, thereby increasing the light in the first sub-area 10A1 and improving the display effect of the portion of the display area A1 overlapping with the first sub-area 10A1.

[0021] In the embodiment of the present application, the light guide plate 10 is provided to include a light diffusion structure 102, and the light diffusion structure 102 is used to compensate the light to the first sub-area 10A1 by reflection or the like, which is beneficial to increase the amount of light received by the first sub-area 10A1 in the light guide plate 10, reduce the impact of uneven light distribution caused by the light being blocked by the hollow portion 101 and unable to be smoothly transmitted to the first sub-area 10A1, and improve the uniformity of light distribution on the light guide plate 10, thereby reducing the brightness difference between the first sub-area 10A1 and other areas in the light guide plate 10, thereby improving the display brightness uniformity on the display panel A10 and the display effect of the display panel 200.

[0022] In one embodiment of the present application, continue to refer to Figure 2 As shown, the light diffusion structure 102 is located at one side of the first sub-region 10A1 in the second direction X2 , and the second direction X2 intersects with the first direction X1 and is parallel to the plane where the display panel 200 is located.

[0023] In the embodiment of the present application, no hollow portion 101 is provided on one side of the first sub-area 10A1 on the second direction X2, so providing a light diffusion structure 102 on one side of the first sub-area 10A1 on the second direction X2 is beneficial to ensure that the light reflected by the light diffusion structure 102 can smoothly reach the first sub-area 10A1, thereby increasing the light density in the first sub-area 10A1, thereby increasing the brightness of the light source provided by the first sub-area 10A1 to part of the display area A1, thereby improving the display uniformity of the display area A1 and improving the display effect of the display panel 200.

[0024] In one embodiment of the present application, continue to refer to Figure 1-Figure 3 As shown, the light guide plate 10 also includes a second area 10B, which overlaps with at least part of the frame area A2 along a direction perpendicular to the plane where the display panel 200 is located, and includes two second sub-areas 10B1 distributed on opposite sides of the first area 10A in the second direction X2.

[0025] Among them, the light diffusion structure 102 is located in at least one of the two second sub-areas 10B1, and the light diffusion structure 102 corresponds to the first sub-area 10A1 at least partially in the second direction X2. In the embodiment of the present application, the light diffusion structure 102 is located in one of the two second sub-areas 10B1 as an example for explanation. In some other embodiments, the width of the second sub-area 10B1 including the light diffusion structure 102 can be greater than or equal to the width of the second sub-area 10B1 without the light diffusion structure 102, which is beneficial to reduce the space occupied by the frame and improve the screen-to-body ratio of the display panel 200.

[0026] In combination with the above content, it can be known that in the backlight unit 300, the light guide plate 10 is also arranged at the position overlapping with the frame area A2 of the display panel 200, and the second area 10B of the light guide plate 10 overlaps with at least part of the frame area A2 of the display panel 200, which is conducive to diffuse reflection transmission of light in the frame area A2, providing conditions for the light to reach the first sub-area 10A1. Further, in combination with the light diffusion structure 102 being arranged in the second sub-area 10B1, and the light diffusion structure 102 and the first sub-area 10A1 at least partially corresponding in the second direction X2, it is conducive to supplementing the light received in the second sub-area 10B1 to the first sub-area 10A1, improving the light density of the first sub-area 10A1, thereby improving the display effect in the partial display area A1 overlapping with the first sub-area 10A1, reducing the brightness difference in the display area A1, and improving the visual effect of the display panel 200.

[0027] Figure 4 A schematic plan view of yet another backlight unit provided in an embodiment of the present application.

[0028] In one embodiment of the present application, Figure 2-Figure 4 As shown, along a direction parallel to the plane where the display panel 200 is located, the light guide plate 10 includes a first side surface 10C, and the first side surface 10C of the light guide plate 10 faces the light emitting assembly 20. It should be noted that, Figure 3 A cross-sectional view of a backlight unit shown in FIG. Figure 4 A cross-sectional view of the same position in the backlight unit in FIG. Figure 4 The first side surface 10C of the light guide plate 10 indicated in the figure also faces the light emitting component 20. It can be seen that in the direction parallel to the plane where the display panel 200 is located, the light guide plate 10 and the light emitting component 20 are at least partially parallel, so that at least part of the light generated by the light emitting component 20 can be emitted to the first side surface 10C of the light guide plate 10. Furthermore, the light emitted by the light emitting component 20 enters the interior of the light guide plate 10 from the first side surface 10C, and the light is evenly distributed on the entire light guide plate 10 through diffuse reflection and other reflection methods inside the light guide plate 10, thereby realizing the function of the backlight unit 300 providing a light source for the display panel 200.

[0029] like Figure 4 As shown, the light-emitting component 20 includes a first light-emitting component 201 and a second light-emitting component 202 arranged in the second direction X2. In the first direction X1, the first light-emitting component 201 is adjacent to the first area 10A, the second light-emitting component 202 is adjacent to the second area 10B, and the second light-emitting component 202 at least partially overlaps with the light diffusion structure 102. The first light-emitting component 201 can directly emit most of the light into the first area 10A in the first direction X1, and the second light-emitting component 202 can directly emit most of the light into the second area 10B in the first direction X1, so as to supplement the light in the second sub-area 10B1.

[0030] In the embodiment of the present application, the light-emitting component 20 is also provided to include a second light-emitting component 202, so that the second area 10B of the light guide plate 10 can also smoothly receive light, so that the light can be reflected in the second sub-area 10B1, providing reflective light for the light diffusion structure 102, so that the light diffusion structure 102 can receive the light and then diffuse the light into the first sub-area 10A1, so that the brightness difference of each position on the display panel 200 is smaller and the brightness is more uniform, thereby improving the display effect of the display panel 200. In one embodiment of the present application, continue to refer to Figure 4 As shown, the light diffusion structure 102 includes a reflective surface 102A at least partially facing the first sub-region 10A1 .

[0031] In the embodiment of the present application, the light diffusion structure 102 is provided to include a reflective surface 102A that is at least partially directed toward the first sub-region 10A1, which is beneficial for reflecting light into the first sub-region 10A1 through the reflective surface in the light diffusion structure 102 that is directed toward the first sub-region 10A1, thereby increasing the amount of light that can be reflected in the first sub-region 10A1, and improving the display brightness of the position in the display panel 200 that overlaps with the first sub-region 10A1.

[0032] In one embodiment of the present application, continue to refer to Figure 4 As shown, the light diffusion structure 102 is configured as a flat plate structure.

[0033] For example, Figure 4 As shown, when the light diffusion structure 102 is a flat plate structure, the flat plate structure is optionally placed obliquely at a position corresponding to the first sub-area 10A1 in the second sub-area 10B1 of the light guide plate 10. At this time, the partial reflective surface 102A of the flat plate structure can receive the light reflected in the second sub-area 10B1, and the reflective surface 102A also includes a portion facing the first sub-area 10A1, so that after the light reaches the reflective surface 102A, it can be reflected by the reflective surface 102A into the first sub-area 10A1.

[0034] In the embodiment of the present application, the light diffusion structure 102 can be optionally fixed inside the light guide plate 10 when the light guide plate 10 is prepared, so that the light can be changed in direction by the light diffusion structure 102 when the light is reflected inside the light guide plate 10, thereby avoiding the light diffusion structure 102 occupying the space other than the light guide plate 10 in the backlight unit 300, thereby improving the space utilization of the backlight unit 300. Setting the light diffusion structure 102 as a planar structure is conducive to reducing the difficulty of preparing the light diffusion structure 102, reducing the degree of differentiation in the preparation of the light diffusion structure 102, improving the product yield in the preparation of the backlight unit 300, and improving the product yield of the display panel 200.

[0035] Figure 5 A method provided in the embodiment of the present application Figure 4 Schematic diagram of a local plan view of the middle area E1.

[0036] In one embodiment of the present application, Figure 4 , Figure 5 As shown, the reflective surface 102A directs the light emitted by the second light-emitting component 202 to the first sub-area 10A1, and the angle between the reflective surface 102 and the first direction X1 is N, wherein the angle N between the reflective surface 102 and the first direction X1 is set within a range of 0°<N<90°. The reflective surface 102 is inclined toward the direction where the first sub-area 10A1 is located, and the angle between the reflective surface 102 and the first direction X1 is set to N, which is conducive to ensuring that the reflective surface 102 can smoothly receive the light transmitted from the second light-emitting component 202 to the second sub-area 10B1 and reflect it to the first sub-area 10A1.

[0037] In one embodiment of the present application, the angle N between the reflective surface 102 and the first direction X1 is set to 45°, which is beneficial for providing a reference basis for the preparation of the reflective surface 102, improving the effect of the light diffusion structure 102 in compensating light in the first sub-area 10A1, and improving the consistency of the preparation of the light diffusion structure 102 in multiple backlight units 300.

[0038] Figure 6 A method provided in the embodiment of the present application Figure 2 Schematic diagram of a local plan view of the middle area E2.

[0039] In one embodiment of the present application, Figure 2 , Figure 6As shown, the light diffusion structure 102 includes a plurality of reflection surfaces 102A, and the reflection surface 102A is a curved surface. When the reflection surface 102A of the light diffusion structure 102 is a curved surface, it is beneficial to reflect the light received by the light diffusion structure 102 from multiple paths to the first sub-area 10A1, which is beneficial to avoid the single reflection path of the light diffusion structure 102 and reduce the uniformity of light distribution in the first sub-area 10A1. Moreover, when the reflection surface 102A is a curved surface, it is also beneficial to increase the angle at which the light transmitted in the second sub-area 10B1 can be received, thereby reflecting more light into the first sub-area 10A1. In summary, when the reflection surface 102A of the light diffusion structure 102 is a curved surface, it is beneficial to further increase the amount of light reflected into the first sub-area 10A1, and it is also beneficial to utilize the large number of reflection angles when the reflection surface 102A is a curved surface, reduce the position preparation accuracy requirements of the light scattering structure 102, and improve the preparation efficiency of the light scattering structure 102.

[0040] In one embodiment of the present application, continue to refer to Figure 6 As shown, the light diffusion structure 102 includes a plurality of spherical structures, and surfaces of at least some of the spherical structures include reflective surfaces 102A.

[0041] In the embodiment of the present application, the light diffusion structure 102 includes a plurality of spherical structures, which is beneficial to improving the structural diversity of the light diffusion structure 102 and providing more feasibility for the preparation of the light diffusion structure 102. For example, Figure 6 As shown, the light diffusion structure 102 includes a plurality of spherical structures, and the reflection surfaces 102A included in the plurality of spherical structures are all curved surfaces, and the reflection surfaces 102A of the plurality of spherical structures are at least partially facing the first sub-area 10A1.

[0042] Figure 7 A schematic plan view of yet another backlight unit provided in an embodiment of the present application.

[0043] In one embodiment of the present application, Figure 7As shown, the light guide plate 10 includes a first sub-reflector 103, and in the second direction X2, the first sub-reflector 103 is located on a side of the second sub-area 10B1 away from the first area 10A. That is, in a direction parallel to the plane where the light guide plate 10 is located, the first sub-reflector 103 is prepared by arranging the side of the second sub-area 10B1 of the light guide plate 10 away from the first area 10A1. Optionally, the first sub-reflector 103 is arranged on the inner side or the outer side of the side of the second sub-area 10B1 of the light guide plate 10 away from the first area 10A1. Exemplarily, the first sub-reflector 103 is bonded to the side of the second sub-region 10B1 away from the first region 10A1, which helps to avoid the situation where part of the light generated by the light-emitting component 20, especially the second part of the light-emitting component 202, is reflected in the light guide plate 10 and is emitted toward the side of the second sub-region 10B1 away from the first region 10A1, thereby ensuring sufficient light in the second sub-region 10B1, improving the light utilization rate of the backlight unit 300, and improving the light output effect of the light guide plate 10.

[0044] Figure 8 A schematic plan view of another backlight unit provided in an embodiment of the present application, Fig. 9 A schematic plan view of yet another backlight unit provided in an embodiment of the present application. In one embodiment of the present application, the light guide plate 10 further includes a second sub-reflector 104 , and the second sub-reflector 104 is located between the first area 10A1 and the second sub-area 10B1 .

[0045] Alternatively, if Figure 8 As shown, the light guide plate 10 includes a second sub-reflector 104 located between the first area 10A and the second sub-area 10B1, which is conducive to at least partially separating the first area 10A and the second sub-area 10B1 of the light guide plate 10. When the light generated by the second part of the light-emitting component 202 is transmitted to the light diffusion structure 102 along the first direction X1, it will pass through the second sub-area 10B1 adjacent to the first area 10A, and there may be a situation where part of the light generated by the second part of the light-emitting component 202 is reflected into the first area 10A. However, the first area 10A overlaps with the display area A1 of the display panel 200, and the brightness in the display area A1 is preferably relatively uniform. If the area with normal brightness in the first area 10A other than the first sub-area 10A1 receives additional light reflected from the second sub-area 10B1, there is a risk of worsening the uneven brightness of the display area A1. Therefore, in the embodiment of the present application, the second sub-reflector 104 is disposed between the first area 10A1 and the second sub-area 10B1, which is beneficial to blocking at least part of the light from entering the area with normal brightness in the display area A1, thereby facilitating improving the brightness uniformity in the display area A1.

[0046] Alternatively, if Fig. 9As shown, the light guide plate 10 includes a first sub-reflector 103 and a second sub-reflector 104. The first sub-reflector 103 is disposed on a side of the second sub-area 10B1 of the light guide plate 10 away from the first area 10A, and the second sub-reflector 104 is disposed between the first area 10A and the second sub-area 10B1. The first sub-reflector 103 can be used to prevent the light reflected in the second sub-area 10B1 from leaking out of the light guide plate 10, and the second sub-reflector 104 can be used to prevent the light reflected in the second sub-area 10B1 from leaking into the first area 10A, thereby ensuring sufficient light in the second sub-area 10B1, and also facilitating more uniform brightness in the display area A1.

[0047] In one embodiment of the present application, continue to refer to Fig. 9 As shown, in the second direction X2, at least part of the first sub-reflector 103 overlaps with the first sub-area 10A1, and the second sub-reflector 104 does not overlap with the first sub-area 10A1. In other words, the extension length of the first sub-reflector 103 located on the side of the second sub-area 10B1 away from the first area 10A in the first direction X1 is similar to or equal to the extension length of the second sub-area 10B1 in the first direction X1, which is conducive to better blocking the light reflected in the second sub-area 10B1 from being emitted outside the light guide plate 10. The extension length of the second sub-reflector 104 located between the first area 10A and the second sub-area 10B1 in the first direction X1 is similar to or equal to the extension length of the second sub-area 10B1 in the first direction X1 minus the extension length of the first sub-area 10A1, so that the second sub-reflector 104 may not block the connection between the second sub-area 10B1 and the first sub-area 10A1, which is beneficial to reducing the degree of reflection of the light transmitted in the second sub-area 10B1 to the part of the display area A1 other than the first sub-area 10A1, and is also beneficial to ensure that the light reflected by the light diffusion structure 102 is not blocked by the second sub-reflector 104 and can smoothly reach the first sub-area 10A1, thereby compensating for the amount of light in the first sub-area 10A1, thereby improving the brightness of the part of the display area A1 overlapping with the first sub-area 10A1.

[0048] Fig.10 Another embodiment provided in this application Figure 2 Schematic diagram of the cross section along the A-A' direction.

[0049] In one embodiment of the present application, Figure 2 , Fig.10As shown, the light guide plate 10 includes a mesh structure A1, and the mesh structure A1 protrudes on one side toward the backlight surface of the display panel 100. When light is transmitted in the light guide plate 10, it can be scattered by some protruding structures in the mesh structure A1 toward the backlight surface of the display panel 100, so that the light originally concentrated in one direction can be propagated in all directions, which helps to evenly distribute the light on the entire surface of the light guide plate 10. In addition, since the light emitting component 20 includes a light source such as a light emitting diode, the emitted light has a high local intensity, which may cause some areas to be too bright while other areas are relatively dark. Using the mesh structure A1 to increase the scattering degree of the optical fiber can effectively reduce the degree of local intensity of the light and make the brightness more uniform. Reflected light: The mesh structure can reflect and guide the light toward the direction of the display panel, reducing the loss of light in the light guide plate and improving the utilization rate of light energy. In addition, the display module 100 uses the light guide plate 10 in the backlight unit 300 to provide a light source for the display panel 200. The design of the dot structure A1 can adjust the light emission angle so that the light entering the light guide plate 10 can be effectively transmitted to the display panel 200, thereby improving the overall luminous efficiency.

[0050] Fig.11 A schematic plan view of yet another backlight unit provided in an embodiment of the present application.

[0051] In one embodiment of the present application, Fig.11 As shown, the first area 10A in the light guide plate 10 also includes a third sub-area 10A2 in addition to the first sub-area 10A1, and the density of the mesh dot structure A1 in the first sub-area 10A1 is greater than the density of the mesh dot structure A1 in the third sub-area 10A2. In combination with the above content, it can be known that in the light guide plate 10, the greater the density of the mesh dot structure A1 at a position, the greater the density of light scattered in the mesh dot structure A1 at that position, so that more light is emitted to the display panel 200 at that position. In general, the greater the density of the mesh dot structure A1 at a position, the higher the brightness of the corresponding position in the display area A1 of the display panel 200.

[0052] In the embodiment of the present application, the density of the dot structure A1 in the first sub-area 10A1 is set to be greater than the density of the dot structure A1 in the third sub-area 10A2, which is beneficial to increasing the light density in the first sub-area 10A1 and reducing the light density difference between the first sub-area 10A1 and the third sub-area 10A2 in the first area 10A, thereby displaying the brightness difference at different positions in the display area A1 and improving the display uniformity of the display panel 200.

[0053] Fig.12 A schematic plan view of yet another backlight unit provided in an embodiment of the present application.

[0054] In one embodiment of the present application, Fig.12As shown, the third sub-region 10A2 of the light guide plate 10 includes a fourth sub-region 10A3 and a fifth sub-region 10A4 located on opposite sides of the first sub-region 10A1 in the second direction X2.

[0055] Continue to refer Fig.11 As shown, in the second direction X2, the width of the fourth sub-area 10A3 is equal to the fifth sub-area 10A4, and the density of the dot structure A1 of the fourth sub-area 10A3 and the fifth sub-area 10A4 is the same, which is beneficial to reducing the difference in light density between the first sub-area 10A1, the fourth sub-area 10A3, and the fifth sub-area 10A4 adjacent to each other in the second direction X2, and improving the uniformity of light density between the first sub-area 10A1 and its two adjacent sub-areas after light compensation, thereby improving the brightness difference of the corresponding positions in the display area A1.

[0056] Or, if Fig.12 As shown, in the second direction X2, the width of the fourth sub-area 10A3 is greater than that of the fifth sub-area 10A4, and the density of the mesh dot structure A1 of the fourth sub-area 10A3 gradually increases in the direction from the fourth sub-area 10A3 to the first sub-area 10A1. In the second direction X2, the second sub-area 10B1 in which the fourth sub-area 10A3 is located on the right side of the first sub-area 10A1 and the light diffusion structure 102 is located on the left side of the first sub-area 10A1 is taken as an example for description. In the embodiment of the present application, the density of the mesh dot structure A1 of the fourth sub-area 10A3 having a larger width among the fourth sub-area 10A3 and the fifth sub-area 10A4 gradually increases, and the closer to the first sub-area 10A1 in the second direction X2, the higher the density of the mesh dot structure A1. This is because when the width of the fourth sub-area 10A3 is larger, there is a more obvious trend of decreasing light density at a position close to the first sub-area 10A1, which is easier to be captured by the human eye. In the embodiment of the present application, the density of the dot structure A1 is gradually increased in the direction from the fourth sub-area 10A3 to the first sub-area 10A1, which is beneficial to improving the uniformity of light in the fourth sub-area 10A3 and reducing the brightness difference between the fourth sub-area 10A3 and the first sub-area 10A1. In addition, the density of the dot structure A1 in the first sub-area 10A1 is relatively high, which is beneficial to improving the connection yield of the light density in the fourth sub-area 10A3 and the first sub-area 10A1, reducing the risk of obvious step difference in light density, thereby improving the visual effect of the display area A1 corresponding to the first sub-area 10A1 and the fourth sub-area 10A3.

[0057] Fig.13 A schematic plan view of yet another backlight unit provided in an embodiment of the present application.

[0058] In one embodiment of the present application, Fig.13As shown, in the first direction X1, along the direction from the light emitting component 20 to the light guide plate 10, the density of the mesh structure A1 gradually increases. It can be understood that in the above direction, the light generated by the light emitting component 20 will first reach the part of the light guide plate 10 close to the light emitting component 20, so the light density in the part of the light guide plate 10 closer to the light emitting component 20 is higher, and in the reflection process of the light along the direction from the light emitting component 20 to the light guide plate 10, the light density will gradually decrease. Therefore, in order to make the light more evenly distributed on the plane of the entire light guide plate 10, the embodiment of the present application uses the aid of the mesh structure A1 to make the amount of light distributed in the direction from the light emitting component 20 to the light guide plate 10 more evenly.

[0059] In the embodiment of the present application, the density of the dot structure A1 is gradually increased in the direction of the light guide plate 10 along the light-emitting component 20, which is beneficial to improve the uniformity of the light density on the entire surface of the light guide plate 10, thereby improving the uniformity of the light emission on the entire surface of the light guide plate 10 and improving the uniformity of the light output brightness of the display panel 100.

[0060] In one embodiment of the present application, continue to refer to Fig.10 As shown, the light guide plate 10 includes a mesh structure A1 , and the mesh structure A1 is protruding toward one side of the backlight surface of the display panel 200 .

[0061] In the embodiments of the present application, Fig.13 As shown, the density of the mesh structure A1 in the light guide plate 10 is gradually increased in the direction from the second part of the light emitting component 202 to the second part of the light emitting component 202 in the second sub-area 10B1. It can be understood that in the above direction, the light generated by the second part of the light emitting component 202 will first reach the part of the light guide plate 10 close to the second part of the light emitting component 202, so the light density in the part of the light guide plate 10 closer to the second part of the light emitting component 202 is higher, and in the reflection process of the light in the direction from the second part of the light emitting component 202 to the light guide plate 10, the light density will gradually decrease. Therefore, in order to make the light more evenly distributed on the plane of the entire light guide plate 10, the embodiment of the present application uses the mesh structure A1 to make the amount of light distributed in the direction from the second part of the light emitting component 202 to the light guide plate 10 more evenly. It is also beneficial to improve the uniformity of the light density in the second sub-area 10B1 and ensure that the light diffusion structure 102 receives enough light.

[0062] In one embodiment of the present application, continue to refer to Figure 4As shown, the light-emitting assembly 20 includes a plurality of light-emitting element LEDs arranged along the second direction X2, and the light-emitting element LEDs emit light after receiving a light-emitting driving signal. Optionally, the light-emitting driving signal may be a light-emitting driving current that drives the light-emitting element LED to emit light. When the display panel 200 is working, the plurality of light-emitting element LEDs in the light-emitting assembly 20 emit light after receiving the light-emitting driving signal, and the light generated by the light emission is transmitted to the light guide plate 10, and the light is reflected in the light guide plate 10 and then distributed more evenly in the entire light guide plate 10.

[0063] In one embodiment of the present application, the light-emitting element LEDs in the first part of the light-emitting component 201 and the second part of the light-emitting component 202 receive the same light-emitting driving signal, which is beneficial to reducing the difficulty of driving the light-emitting element LEDs in the light-emitting component 20 to emit light, and is also beneficial to providing conditions for the light-emitting element LEDs in the first part of the light-emitting component 201 and the light-emitting element LEDs in the second part of the light-emitting component 202 to use the same driving signal line.

[0064] In one embodiment of the present application, the light-emitting element LEDs in the first part light-emitting component 201 and the second part light-emitting component 202 receive different light-emitting driving signals, which is beneficial to improving the flexibility of the light-emitting brightness of the light-emitting element LEDs in the first part light-emitting component 201 and the second part light-emitting component 202, and is beneficial to flexibly adjusting the light-emitting brightness of the light-emitting element LEDs in the second part light-emitting component 202, adjusting the amount of light reflected by the light diffusion structure 102 to the first sub-area 10A1, and avoiding over-compensation or under-compensation of light in the first sub-area 10A1.

[0065] Fig.14 A schematic plan view of a display device provided in an embodiment of the present application.

[0066] The present application embodiment provides a display device 400, such as Fig.14 As shown, the display device 400 includes the display module 100 provided in any of the above embodiments. Optionally, the display device 400 can be a device for display such as a mobile phone, a computer, a display screen, etc.

[0067] In the display device 400, in the embodiment of the present application, the light guide plate 10 is provided to include a light diffusion structure 102, and the light diffusion structure 102 is used to compensate the light to the first sub-area 10A1 by reflection or the like, which is beneficial to increase the amount of light received by the first sub-area 10A1 in the light guide plate 10, reduce the impact of uneven light distribution caused by the light being blocked by the hollow portion 101 and unable to be smoothly transmitted to the first sub-area 10A1, and improve the uniformity of light distribution on the light guide plate 10, thereby reducing the brightness difference between the first sub-area 10A1 and other areas in the light guide plate 10, thereby improving the display brightness uniformity on the display panel A10 and the display effect of the display panel 200.

[0068] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A display module, characterized in that: include: The display panel comprises a display area and a frame area, wherein the frame area at least partially surrounds the display area; A backlight unit, the backlight unit is located on one side of the backlight surface of the display panel, the backlight unit comprises a light guide plate and a light emitting component, the light emitting component is located on one side of the light guide plate along a direction parallel to the plane where the backlight unit is located, and the light guide plate comprises a hollow portion; The light guide plate includes a first area, and the first area overlaps with the display area along a direction perpendicular to the plane where the display panel is located; the first area also includes a first sub-area, and the first sub-area is located on a side of the hollow portion away from the light-emitting component in the first direction, and the first direction is a direction in which the light-emitting component is adjacent to the light guide plate; Wherein, the light guide plate further includes a light diffusion structure, and the light diffusion structure is used to compensate the light to the first sub-area.

2. The display module according to claim 1, characterized in that: The light diffusion structure is located at one side of the first sub-area in a second direction, and the second direction intersects with the first direction and is parallel to a plane where the display panel is located.

3. The display module according to claim 2, characterized in that: The light guide plate further includes a second area, and along a direction perpendicular to the plane where the display panel is located, the second area overlaps with at least a portion of the frame area, and the second area includes two second sub-areas distributed on opposite sides of the first area in the second direction; The light diffusion structure is located in at least one of the two second sub-regions, and the light diffusion structure at least partially corresponds to the first sub-region in the second direction.

4. The display module according to claim 2, characterized in that: Along a direction parallel to the plane where the display panel is located, the light guide plate includes a first side surface, the first side surface of the light guide plate faces the light emitting assembly, and the light emitting assembly includes a first part of light emitting assemblies and a second part of light emitting assemblies arranged in the second direction; Wherein, in the first direction, the first portion of the light-emitting components is adjacent to the first area, the second portion of the light-emitting components is adjacent to the second area, and the second portion of the light-emitting components at least partially overlaps with the light diffusion structure.

5. The display module according to claim 3, characterized in that: The light diffusion structure includes a reflective surface at least partially facing the first sub-region.

6. The display module according to claim 5, characterized in that: The light diffusion structure is a flat plate structure.

7. The display module according to claim 6, characterized in that: The reflective surface directs the light emitted by the second part of the light-emitting component toward the first sub-area, and an angle between the reflective surface and the first direction is N, wherein 0°<N<90°.

8. The display module according to claim 7, characterized in that: N=45°。 9. The display module according to claim 5, characterized in that: The light diffusion structure includes a plurality of reflective surfaces, and the reflective surfaces are curved surfaces.

10. The display module according to claim 9, characterized in that: The light diffusion structure includes a plurality of spherical structures, and surfaces of at least some of the spherical structures include the reflective surface.

11. The display module according to claim 4, characterized in that: The light guide plate comprises a first sub-reflector. In the second direction, the first sub-reflector is located at a side of the second sub-region away from the first region.

12. The display module according to claim 4 or 11, characterized in that: The light guide plate further includes a second sub-reflector sheet, and the second sub-reflector sheet is located between the first area and the second sub-area.

13. The display module according to claim 12, characterized in that: In the second direction, at least a portion of the first sub-reflector overlaps with the first sub-region, and the second sub-reflector does not overlap with the first sub-region.

14. The display module according to claim 1, characterized in that: The light guide plate comprises a mesh dot structure, and the mesh dot structure protrudes toward one side of the backlight surface of the display panel.

15. The display module according to claim 14, characterized in that: The first region further includes a third sub-region except the first sub-region, and the density of the mesh dot structure in the first sub-region is greater than the density of the mesh dot structure in the third sub-region.

16. The display module according to claim 15, characterized in that: The third sub-region includes a fourth sub-region and a fifth sub-region located on opposite sides of the first sub-region in the second direction; In the second direction, the width of the fourth sub-region is equal to that of the fifth sub-region, and the fourth sub-region and the fifth sub-region have the same dot structure density; Alternatively, in the second direction, the width of the fourth sub-region is greater than that of the fifth sub-region, and the density of the dot structure of the fourth sub-region gradually increases along the direction from the fourth sub-region to the first sub-region.

17. The display module according to claim 14, characterized in that: In the first direction, along the direction from the light emitting component to the light guide plate, the density of the mesh structure gradually increases.

18. The display module according to claim 4, characterized in that: The light guide plate comprises a mesh dot structure, and the mesh dot structure protrudes toward one side of the backlight surface of the display panel; In the second sub-area, along the direction from the second part of the light-emitting components to the second sub-area, the density of the mesh structure in the light guide plate gradually increases.

19. The display module according to claim 4, characterized in that: The light emitting assembly includes a plurality of light emitting elements arranged along the second direction, and the light emitting elements emit light after receiving a light emitting driving signal.

20. The display module according to claim 19, characterized in that: The light-emitting elements in the first part of the light-emitting components and the second part of the light-emitting components receive the same light-emitting driving signal.

21. The display module according to claim 19, characterized in that: The light-emitting elements in the first part of the light-emitting components and the light-emitting elements in the second part of the light-emitting components receive different light-emitting driving signals.

22. A display device, characterized in that: Comprising a display module as described in any one of claims 1-21.

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