Display module and display device

Abstract

The present application relates to a display module and a display device, comprising: a backlight module, comprising a light-emitting component and an optical film group, the light-emitting component comprising a substrate and a first light-emitting unit and a second light-emitting unit arranged on the substrate, the backlight module also comprising a light-transmitting hole running through the thickness direction of the backlight module, the first light-emitting unit being used to provide a light source for display, and the second light-emitting unit being located around the light-transmitting hole for providing fill light; a display panel being located in the light-emitting direction of the backlight module; and a dimming structure being arranged between the substrate and the optical film group, the dimming structure being configured to adjust the light-emitting direction of the second light-emitting unit so that the light emitted by the second light-emitting unit is emitted from the light-transmitting hole.

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] With the development of full-screen displays, more and more electronic photosensitive devices need to be integrated into display devices. For example, a light-transmitting hole is formed in the display module of a liquid crystal display device, and a camera is placed in correspondence with the light-transmitting hole. During the display process, the area corresponding to the light-transmitting hole serves as the display area; during the shooting process, the area corresponding to the light-transmitting hole serves as the photosensitive area to realize the image capture.

[0003] However, the light-transmitting hole is the area where the backlight module directly opens. Therefore, the backlight module provides insufficient light to the area corresponding to the light-transmitting hole, resulting in the brightness of the area corresponding to the light-transmitting hole being darker than that of other display areas during the display process, that is, the dark area in the area corresponding to the light-transmitting hole is obvious, which seriously affects the display effect.

[0004] In order to solve this technical problem, related technologies often adopt a method of setting a fill light component and a reflector group cooperating with the fill light component on the side of the backlight module away from the display panel. During the display process, the fill light component is used to emit light, which is reflected by the reflector group and emitted from the light-transmitting hole. However, setting the fill light component and the reflector group in the light-emitting direction of the fill light component on one side of the backlight module will undoubtedly increase the thickness of the product, which does not meet the development trend of lightweight and thin mobile terminals or wearable devices. Summary of the Invention

[0005] The present application provides a display module that can solve the technical problem that existing display modules require additional fill light components, which causes an increase in product thickness.

[0006] A display module, comprising:

[0007] A backlight module, comprising a light-emitting assembly and an optical film assembly, wherein the light-emitting assembly comprises a substrate and a first light-emitting unit and a second light-emitting unit disposed on the substrate. The backlight module further comprises a light-transmitting hole extending through the thickness of the backlight module, wherein the first light-emitting unit is used to provide a light source for display, and the second light-emitting unit is located around the light-transmitting hole to provide fill light.

[0008] A display panel is located in the light emitting direction of the backlight module; and

[0009] The dimming structure is disposed between the substrate and the optical film group, and is configured to adjust the light emission direction of the second light emitting unit so that the light emitted by the second light emitting unit is emitted from the light transmission hole.

[0010] In one embodiment, a wedge-shaped portion is formed on a side of the optical film assembly close to the substrate, and the wedge-shaped portion constitutes a part of a side wall of the light-transmitting hole or the wedge-shaped portion is spaced apart from the light-transmitting hole.

[0011] In one embodiment, the light-transmitting hole includes a port close to one side of the optical film assembly, the port is trumpet-shaped, and a surface of the port includes a plurality of micro-surfaces connected to each other.

[0012] In one embodiment, the dimming structure includes a first light path adjustment film layer arranged on the surface of the wedge-shaped portion and a second light path adjustment film layer arranged on the surface of the port. Part of the light emitted by the second light-emitting unit can be incident and reflected by the first light path adjustment film layer and then projected onto the second light path adjustment film layer. The second light path adjustment film layer reflects the part of the light and then emits from the light-transmitting hole.

[0013] In one embodiment, the dimming structure further includes an angle adjustment member disposed around the light-transmitting hole, the angle adjustment member tilts the second light-emitting unit, and the angle adjustment members on opposite sides of the light-transmitting hole include tilted surfaces facing each other.

[0014] In one embodiment, the dimming structure further includes a curved lens connected to the substrate, the curved lens can be flipped 180 degrees corresponding to the position of the through hole, and the curved lens includes a central light-transmitting area and an edge reflection area surrounding the central light-transmitting area.

[0015] In one embodiment, a light-guiding structure is provided in the light-transmitting hole. The light-guiding structure is provided close to the inner wall of the light-transmitting hole. The light-guiding structure can receive the large-angle light emitted by the second light-emitting unit and guide it to be transmitted to the display panel.

[0016] In one embodiment, the light guide structure is a ring structure formed by bonding a plurality of light guides; a side of each light guide facing the substrate is a wedge-shaped surface, and the wedge-shaped surface faces away from the wall surface of the light-transmitting hole.

[0017] In one embodiment, the light guide structure is a block structure formed by cutting a light guide bundle formed by bonding a plurality of light guides together, and the side of the block structure facing the substrate is a concave arc surface.

[0018] The present application also relates to a display device.

[0019] A display device comprises the display module and a camera module as described above, wherein the camera module is located on a side of the substrate away from the display module and corresponds to the position of the light-transmitting hole.

[0020] The display module provided in this application can achieve the following technical effects:

[0021] 1. The solution provided in the present application uses a dimming structure arranged between the substrate and the optical film group to adjust the light output direction of the second light-emitting unit through the dimming structure so that the light emitted by the second light-emitting unit is emitted from the light-transmitting hole, thereby eliminating the need to set it on the side of the substrate away from the display panel.

[0022] 2. By changing the position and shape of the dimming structure, the space it occupies in the backlight module can be made as small as possible, thereby not affecting the display quality of the display module.

[0023] 3. By adding a light-guiding structure to the display panel, the light energy emitted by the second light-emitting unit can be guided to be projected more onto the optical film group, thereby improving the display quality of the display panel. When shooting, the light-guiding structure captures light from different angles of the outside world, transmits it to the second light path adjustment film layer, and projects it onto the camera module through reflection from the second light path adjustment film layer, thereby meeting the brightness requirements during shooting. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of a display module provided in the first embodiment of the present application;

[0025] Figure 2 yes Figure 1 A schematic diagram of the structure of the provided display module when used for shooting;

[0026] Figure 3 2 is a schematic structural diagram of a display module provided in the second embodiment of the present application;

[0027] Figure 4 1 is a schematic structural diagram of a display module provided in the third embodiment of the present application;

[0028] Figure 5 yes Figure 4 A top view of a light guide structure included in a provided display module;

[0029] Figure 6 1 is a schematic structural diagram of a display module provided in a fourth embodiment of the present application;

[0030] Figure 7 yes Figure 6 A top view of a light guide structure included in a provided display module;

[0031] Figure 8 1 is a schematic structural diagram of a display module provided in a fifth embodiment of the present application;

[0032] Figure 9 yes Figure 8 The provided schematic diagram shows the structure of the display module in the camera state.

[0033] Explanation of the accompanying drawings: 100, display module; 1, light-emitting component; 2, optical film group; 12, first light-emitting unit; 14, second light-emitting unit; 101, light-transmitting hole; 111, first hole; 121, second hole; 3, display panel; 4, dimming structure; 10, substrate; 20, wedge-shaped portion; 112, port; 40, first light path adjustment film layer; 42, second light path adjustment film layer; 43, angle adjustment member; 5, light guide structure; 50, light guide body; 44, curved lens; 440, central light-transmitting area; 442, edge reflection area; 200, camera module; 110, recessed portion; 52, reflection layer. DETAILED DESCRIPTION

[0034] The following is combined with Figures 1-9 The display module and display device provided in this application are further described in detail.

[0035] See also Figure 1-Figure 2 , Figure 1-Figure 2 A display device provided in the first embodiment of the present application includes a display module 100 and a camera module 200 located at a preset position of the display module 100. The display module 100 includes a backlight module, a display panel 3 and a dimming structure 4.

[0036] The backlight module includes a light-emitting assembly 1 and an optical film assembly 2. The light-emitting assembly 1 includes a substrate 10 and first and second light-emitting units 12 and 14 disposed on the substrate 10. The backlight module also includes light-transmitting holes 101 extending through the thickness of the backlight module. In this embodiment, the light-transmitting holes 101 include a first hole 111 extending through the substrate 10 and a second hole 121 extending through the optical film assembly 2. The shapes of the first and second holes 111 and 121 can be consistent or different. In this embodiment, both the first and second holes 111 and 121 can be circular or square.

[0037] The first and second light-emitting units 12, 14 are used to provide light for display module 100. The second light-emitting unit 14 is located around the light-transmitting hole 101 to provide fill light. The first and second light-emitting units 12, 14 are mini-LEDs, micro-LEDs, or other light-emitting elements. Mini-LEDs are 50 to 200 microns in size, while micro-LEDs are smaller than 50 microns. In this embodiment, both the first and second light-emitting units 12, 14 are mini-LEDs.

[0038] The display panel 3 is located in the light-emitting direction of the backlight module and is used to receive backlight and control its transmittance, thereby displaying images of different grayscales. The display panel 3 can be a liquid crystal display panel. The display panel 3 specifically includes an array substrate (not shown), a color filter substrate, and a liquid crystal layer located between the array substrate and the color filter substrate.

[0039] The dimming structure 4 is disposed between the substrate 10 and the optical film assembly 2 . The dimming structure 4 is configured to adjust the light emission direction of the second light emitting unit 14 so that the light emitted by the second light emitting unit 14 is emitted from the second hole 121 included in the light transmission hole 101 .

[0040] In this embodiment, a wedge-shaped portion 20 is formed on a side of the optical film assembly 2 close to the substrate 10 . In this embodiment, the wedge-shaped portion 20 is spaced apart from the second hole 121 .

[0041] The first hole 111 includes a port 112 near one side of the optical film assembly 2. The dimming structure 4 includes a first optical path adjustment film layer 40 disposed on the surface of the wedge-shaped portion 20 and a second optical path adjustment film layer 42 disposed on the surface of the port 112. Part of the light emitted by the second light-emitting unit 14 can be incident on and reflected by the first optical path adjustment film layer 40, then projected onto the second optical path adjustment film layer 42. The second optical path adjustment film layer 42 reflects this part of the light and then emits it from the light-transmitting hole 101. The first optical path adjustment film layer 40 can be a reflective layer formed of metal or a semi-transparent and semi-reflective film.

[0042] from Figure 1 As can be seen, the small-angle light emitted by the second light-emitting unit 14 is primarily incident on the first optical path adjustment film layer 40, while the large-angle light is incident on the optical film assembly 2 surrounding the wedge-shaped portion 20. When the first optical path adjustment film layer 40 is a semi-transmissive and semi-reflective film, the light transmitted by the first optical path adjustment film layer 40 is used for display, while the reflected light reaches the second optical path adjustment film layer 42 for fill light.

[0043] In a further embodiment, the surface of the port 112 includes a plurality of microsurfaces, which are connected in sequence, similar to the surface of a golf ball consisting of a plurality of small microsurfaces. Each microsurface can independently adjust the reflection angle of light, so that part of the light emitted by the second light-emitting unit 14 can be adjusted as much as possible to reach the light-transmitting hole 101, thereby minimizing the display difference between the position of the light-transmitting hole 101 and other positions.

[0044] In this embodiment, the port 112 is a trumpet-shaped arc. That is, the opening of the light-transmitting hole 101 on the side close to the display panel 3 is slightly larger than the opening of the light-transmitting hole 101 on the side close to the substrate 10. Thus, the shape of the port 112 is fully utilized to adjust the emission angle of the light.

[0045] The working principle of the display module 100 of this embodiment is that when display is required, the first light-emitting unit 12 and the second light-emitting unit 14 are turned on at the same time, the first light-emitting unit 12 provides backlight to the display panel 3, and part of the light beam emitted by the second light-emitting unit 14 reaches the first light path adjustment film layer 40 on one side of the display panel 3, and reaches the second light path adjustment film layer 42 on one side of the substrate 10 after reflection by the first light path adjustment film layer 40, and reaches the light-transmitting hole 101 after reflection by the second light path adjustment film layer 42, and finally exits from one side of the display panel 3; when shooting is required, the first light-emitting unit 12 and the second light-emitting unit 14 are both in the closed state. In addition to the external light corresponding to the position of the light-transmitting hole 101 that can enter the camera module 200, some large-angle light can also enter the camera module 200 after reflection by the second light path adjustment film layer 42, that is, the second light path adjustment film layer 42 realizes the adjustment of the light angle in both display and shooting states.

[0046] See also Figure 3 , Figure 3 A display module 100 is provided in the second embodiment of the present application. The display module 100 provided in the second embodiment is basically the same as the first embodiment, except that, in this embodiment, the wedge-shaped portion 20 constitutes a part of the side wall of the light-transmitting hole 101, and the dimming structure 4 also includes an angle adjustment member 43 arranged around the light-transmitting hole 101. The angle adjustment member 43 causes the second light-emitting unit 14 to be tilted, and the angle adjustment members 43 on opposite sides of the light-transmitting hole 101 include inclined surfaces that are back to back.

[0047] The angle adjustment member 43 tilts the second light-emitting unit 14 so that part of the light emitted by the second light-emitting unit 14 is reflected by the first light path adjustment film layer 40 and then projected onto the second light path adjustment film layer 42 opposite to the first light path adjustment film layer 40. The second light path adjustment film layer 42 reflects the part of the light and then emits it from the light-transmitting hole 101.

[0048] The solution provided in the second embodiment can reduce the pitch of the second light-emitting units 14 as much as possible, and ensure display quality through the layout of light-emitting units with small pitches.

[0049] See also Figure 4-Figure 5 , Figure 4-Figure 5 A display module 100 is provided in the third embodiment of the present application. The display module 100 provided in the third embodiment is basically the same as the first embodiment, except that, in this embodiment, a light-guiding structure 5 is provided in the light-transmitting hole 101, and the light-guiding structure 5 is arranged close to the inner wall of the light-transmitting hole 101. The light-guiding structure 5 can receive the large-angle light emitted by the second light-emitting unit 14 and guide it to be transmitted to the display panel 3.

[0050] In this embodiment, the light guide structure 5 is attached to the inner wall of the light transmission hole 101. The light guide structure 5 is a ring-shaped structure formed by bonding multiple light guides 50. Each light guide 50 has a wedge-shaped surface on the side facing the substrate 10, and the wedge-shaped surface is the side surface facing away from the light transmission hole 101. This arrangement allows even large-angle light to enter the light guide structure 5 from the end of the light guide 50, where it is totally reflected before exiting, thereby improving light utilization. The inner surface of the light guide structure 5 can be coated with a reflective layer 52 to allow light to be reflected before entering the display panel 3.

[0051] In this embodiment, the light guide 50 may be an optical fiber. After the light enters the optical fiber, it is totally reflected and transmitted inside the optical fiber until it is emitted from the other end to the display panel 3.

[0052] See also Figure 6-Figure 7 , Figure 6-Figure 7 A display module 100 is provided in the fourth embodiment of the present application. The display module 100 provided in the second embodiment is basically the same as the first embodiment, except that, in this embodiment, the light guide structure 5 is a light guide bundle formed by bonding multiple light guides 50 and cutting the light guide bundle to form a block structure. The side of the block structure facing the substrate 10 is a concave arc surface, and the thickness of the block structure is consistent with the depth of the second hole 121.

[0053] The concave arc surface allows light of various angles to enter the light guide 50 for total reflection transmission as much as possible, thereby improving the utilization rate of light.

[0054] The fourth embodiment provides a solution that guides the various angles of light emitted by the second light-emitting unit 14 to the display panel 3 via optical fibers, achieving uniform light distribution and preventing display differences caused by differences in brightness at the corresponding locations of the light-transmitting aperture 101 and at other locations. During shooting, external light is also directed by the light guide 50 and projected onto the photosensitive area of the camera module 200, thereby improving light utilization.

[0055] See also Figure 8-Figure 9 , Figure 8-Figure 9 A display module 100 is provided in accordance with a fifth embodiment of the present application. The display module 100 provided in the fifth embodiment is substantially the same as that in the first embodiment, except that the substrate 10 includes a recessed portion 110, which is provided around a first hole 111. A second optical path adjustment film layer 42 is formed in the recessed portion 110. The dimming structure 4 also includes a curved lens 44 connected to the substrate 10. The curved lens 44 is positioned corresponding to the first hole 111 and can be flipped 180 degrees. The curved lens 44 includes a central light-transmitting area 440 and an edge reflective area 442 surrounding the central light-transmitting area 440. The aperture of the central light-transmitting area 440 is consistent with the aperture of the first hole 111.

[0056] In this embodiment, when the curved lens 44 is flipped 180 degrees, its edge reflective area 442 is just located at the concave portion 110 and the central light-transmitting area 440 is aligned with the first hole 111 .

[0057] The curved lens 44 can be installed in a frame that matches the curved lens 44. A rotating shaft can be set on the side wall of the frame, and the rotating shaft is connected to the driving member to achieve the flipping of the curved lens 44 and maintain the flipped state.

[0058] The working principle of the display module 100 of this embodiment is that when display is required, the curved lens 44 is flipped so that the central light-transmitting area 440 is arranged close to one side of the optical film group 2. Part of the light emitted from the second light-emitting unit 14 is reflected by the first light path adjustment film layer 40 and reaches the edge reflection area 442. After being reflected by the edge reflection area 442, it enters the second hole 121 and is emitted. Part of the light passes through the first light path adjustment film layer 40 and is emitted from the central light-transmitting area 440 to the recessed portion 110. The surface of the recessed portion 110 is provided with a second light path adjustment film layer 42. After being reflected by the second light path adjustment film layer 42, it is emitted from the second hole 121. In this way, the light emitted by the second light-emitting unit 14 is fully adjusted in light path and emitted from the second hole 121.

[0059] When the display module 100 is shooting, the curved lens 44 is flipped so that the central light-transmitting area 440 is set close to the side of the substrate 10. The first light-emitting unit 12 and the second light-emitting unit 14 do not emit light. The external ambient light enters the curved lens 44 from the second hole 121, and the central light-transmitting area 440 plays the role of converging the light path, so that as much light as possible can be sensed by the photosensitive area of the camera module 200.

[0060] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A display module, characterized in that: include: A backlight module comprises a light-emitting component (1) and an optical film group (2), wherein the light-emitting component (1) comprises a substrate (10) and a first light-emitting unit (12) and a second light-emitting unit (14) arranged on the substrate (10), wherein the backlight module further comprises a light-transmitting hole (101) penetrating the thickness direction of the backlight module, wherein the light-transmitting hole (101) comprises a first hole (111) penetrating the substrate (10) and a second hole (121) penetrating the optical film group (2), wherein the substrate (10) comprises a recessed portion (110), wherein the recessed portion (110) surrounds the first hole (111) and the recessed portion (110) 11), the first hole (111) includes a port (112) close to one side of the optical film group (2), the optical film group (2) is provided with a wedge-shaped portion (20) on one side close to the substrate (10), the wedge-shaped portion (20) constitutes a part of the side wall of the first hole (111), or the wedge-shaped portion (20) is spaced apart from the first hole (111), the first light-emitting unit (12) and the second light-emitting unit (14) are both used to provide a light source for display, and the second light-emitting unit (14) is located around the light-transmitting hole (101) and is also used to provide fill light; A display panel (3) is located in the light emitting direction of the backlight module; and A dimming structure (4) is arranged between a substrate (10) and an optical film group (2), wherein the dimming structure (4) comprises a first light path adjustment film layer (40) arranged on the surface of the wedge-shaped portion (20) and a second light path adjustment film layer (42) arranged on the surface of the port (112), wherein the second light path adjustment film layer (42) is formed on the recessed portion (110), and a portion of the light emitted by the second light-emitting unit (14) can be incident on and reflected by the first light path adjustment film layer (40) and then projected onto the second light path adjustment film layer (42), wherein the second light path adjustment film layer (42) reflects the portion of the light and then emits from the second hole (121), wherein the dimming structure (4) further comprises a curved lens (44) connected to the substrate (10), wherein the curved lens (44) corresponds to the position of the first hole (111) and can be flipped 180 degrees, wherein the curved lens (44) includes a central light-transmitting area (440) and an edge reflection area (442) surrounding the central light-transmitting area (440); when the arc lens (44) is flipped so that the protrusion faces the first hole (111) for display, a portion of the light beam emitted by the second light-emitting unit (14) is reflected by the edge reflection area (442) and emitted from the second hole (121) to the display panel (3); another portion of the light beam emitted by the second light-emitting unit (14) passes through the light-transmitting area (440) and is reflected by the second light path adjustment film layer (42) and emitted from the second hole (121); when the arc lens (44) is flipped so that the protrusion is located in the recessed portion (110) for shooting, ambient light is incident from the light-transmitting hole (101) to reach the arc lens (44), and the central light-transmitting area (440) converges the ambient light to project it to a preset position corresponding to the light-transmitting hole (101).

2. The display module according to claim 1, wherein: The port (112) is trumpet-shaped, and the surface of the port (112) includes a plurality of micro-surfaces connected to each other.

3. A display device, characterized in that: It comprises the display module and camera module (200) according to any one of claims 1 to 2, wherein the camera module (200) is located on a side of the substrate (10) away from the display module and corresponds to the position of the light-transmitting hole (101).

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