Backlight module, display device, and tiled screen

Abstract

The present application relates to the technical field of display, and discloses a backlight module, a display device, and a tiled screen. The backlight module comprises: a frame body, an optical component, a light source component, and a plurality of support members. The plurality of support members are distributed at a light outlet of the frame body and can be used for supporting the optical component. The width of the side of each support member close to the optical component is less than the width of the side of the support member facing away from the optical component, that is, the width of the side of the support member close to the optical component is reduced. Thus, the amount of blockage of light from the light source component by the ends of the support members close to the optical component is effectively reduced, so that more light is fully mixed at an edge portion of the optical component connected to the support members, thereby reducing the area of a shadow region in a connection region between the optical component and the support members.

Description

Backlight modules, display devices and video walls

[0001] This application claims priority to Chinese Patent Application No. 202410826910.9, filed on June 25, 2024, entitled “Backlight Module, Display Device and Splicing Screen”, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of display technology, and in particular to a backlight module, display device and splicing screen. Background Technology

[0003] To improve user comfort when using display devices, narrow-bezel display devices with larger screen sizes and narrower bezels have emerged. Display devices typically include a backlight module and a liquid crystal display panel. The backlight module can be either a direct-lit backlight module or an edge-lit backlight module. Direct-lit backlight modules are easier to manufacture into display devices with narrow bezels.

[0004] Traditional direct-lit backlight modules typically include: optical components (also known as optical films), a housing, and a light source component. The optical and light source components are usually stacked one on top of the other, and the housing is used to enclose the optical and light source components. The inner side of the housing usually has multiple support structures to support the optical components.

[0005] However, the multiple support structures block some of the light emitted by the light source components, resulting in poor display quality on the LCD panel. Summary of the Invention

[0006] This application provides a backlight module, a display device, and a video wall. It solves the problem in the prior art where the support structure obstructs the optical components of the light source, resulting in poor display quality on the liquid crystal display panel. The technical solution is as follows:

[0007] On one hand, a backlight module is provided, the backlight module comprising:

[0008] The frame, optical components, light source components, and multiple support components;

[0009] The frame has a receiving cavity and a light outlet communicating with the receiving cavity;

[0010] The support member is fixedly connected to the side of the frame facing the light outlet within the accommodating cavity, and the plurality of support members are distributed around the light outlet;

[0011] The optical component is located at the light outlet, and the edge portion of the optical component is connected to the support member;

[0012] The light source component is fixedly connected to the side of the frame away from the light outlet within the accommodating cavity, and the light-emitting surface of the light source component faces the optical component.

[0013] The width of the support member on the side closest to the optical component is smaller than the width of the support member on the side away from the optical component.

[0014] Optionally, the support member is plate-shaped, and the cross-sectional width of the support member on the target plane gradually decreases along the direction of the light source component closer to the optical component;

[0015] The target plane is perpendicular to the plane where the light outlet is located, and also perpendicular to the plate-shaped support member.

[0016] Optionally, the support member has a support portion for supporting the optical component, and the side of the support portion facing the optical component is an arc surface or a plane.

[0017] Optionally, the width of the support portion ranges from 0.4 mm to 1 mm.

[0018] Optionally, the frame has an annular support platform near the edge of the light outlet, and the optical components are distributed within the area enclosed by the support platform. The support platform has a support surface facing the optical components, a portion of the support surface contacts a portion of the side of the optical components, and a gap exists between another portion of the support surface and another portion of the side of the optical components.

[0019] Optionally, the backlight module further includes an adhesive layer located between at least a portion of the support member and the edge portion of the optical component, the adhesive layer being bonded and fixed to the edge portion of the support member and the edge portion of the optical component respectively.

[0020] Optionally, the overlap width between the edge portion of the optical component and the first target support is greater than the overlap width between the edge portion of the optical component and the second target support.

[0021] The adhesive layer is located between the edge portion of the first target support and the optical component;

[0022] Wherein, the first target support is the support that is adjacent to the first support platform among the plurality of support members, and the first support platform is the part of the support platform that contacts the side of the optical component; the second target support is the support that is adjacent to the second support platform among the plurality of support members, and the second support platform is the part of the support platform that is separated from the side of the optical component.

[0023] Optionally, the backlight module further includes: a plurality of light-absorbing elements, wherein the plurality of light-absorbing elements are fixedly connected to the side of the frame facing the light outlet within the accommodating cavity, and the plurality of light-absorbing elements are distributed between two adjacent second target supports.

[0024] Optionally, the plurality of light-absorbing elements are arranged in multiple rows along the frame toward the light-emitting port;

[0025] Among them, for two adjacent rows of light-absorbing elements, the sum of the areas of each light-absorbing element in the row closer to the light outlet is greater than the sum of the areas of each light-absorbing element in the row further away from the light outlet.

[0026] Optionally, for two adjacent rows of light-absorbing elements, the distribution density of the light-absorbing elements in the row closer to the light-emitting port is greater than the distribution density of the light-absorbing elements in the row further away from the light-emitting port; and / or, the area of ​​a single light-absorbing element in the row closer to the light-emitting port is greater than the area of ​​a single light-absorbing element in the row further away from the light-emitting port.

[0027] Optionally, there are two first support platforms and two second support platforms. One first support platform and one second support platform are arranged opposite to each other in a first direction, and the other first support platform and the other second support platform are arranged opposite to each other in a second direction.

[0028] The first direction and the second direction intersect and are both parallel to the plane where the light outlet is located.

[0029] Optionally, the optical component includes: a diffuser plate, a lower prism plate, an upper prism plate, and a diffuser sheet stacked in a direction perpendicular to and away from the light-emitting surface of the light source component, wherein the side of the diffuser plate close to the support is connected to the support.

[0030] Optionally, the light source component includes: a back plate fixedly connected to the frame, and a lamp plate fixed to the back plate.

[0031] On the other hand, a display device is provided, the display device comprising:

[0032] A liquid crystal display panel and a backlight module, wherein the back side of the liquid crystal display panel is connected to one side of an optical component in the backlight module, and the backlight module is any of the backlight modules given above.

[0033] On another front, a video wall is provided, comprising: a plurality of spliced ​​display devices, the display devices including those described above.

[0034] The beneficial effects of the technical solutions provided in this application include at least the following:

[0035] A backlight module may include a frame, an optical component, a light source component, and multiple support members. The support members are distributed at the light outlet of the frame and serve to support the optical component. Since the width of the support member near the optical component is smaller than the width of the support member away from the optical component, the width of the end of the support member near the optical component is reduced. Therefore, the amount of light blocked by the support member near the optical component is effectively reduced, allowing more light to mix fully at the edge of the optical component connected to the support member, thereby reducing the area of ​​the shadow region at the connection between the optical component and the support member. Furthermore, the above-described arrangement of the support members does not require reducing the overlap width between the optical component and the support member, ensuring that the optical component will not detach from the support member during contraction. In addition, after integrating the backlight module into the display device, the display effect of the image on the liquid crystal display panel in the display device is also better. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1 is a schematic diagram of a backlight module provided in an embodiment of this application;

[0038] Figure 2 is a schematic diagram showing the connection between the frame and the support in the backlight module shown in Figure 1;

[0039] Figure 3 is a cross-sectional schematic diagram of a support member provided in an embodiment of this application;

[0040] Figure 4 is a top view of a backlight module provided in an embodiment of this application;

[0041] Figure 5 is a cross-sectional view of Figure 4 at point A-A';

[0042] Figure 6 is a cross-sectional view of Figure 4 at point B-B';

[0043] Figure 7 is a schematic diagram of another backlight module provided in an embodiment of this application;

[0044] Figure 8 is a magnified view of part D in Figure 7;

[0045] Figure 9 is a partial structural schematic diagram of a backlight module provided in an embodiment of this application;

[0046] Figure 10 is a structural schematic diagram of another backlight module provided in an embodiment of this application;

[0047] Figure 11 is a schematic diagram of the structure of a display device provided in an embodiment of this application.

[0048] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0050] Please refer to Figures 1 and 2. Figure 1 is a structural schematic diagram of a backlight module provided in an embodiment of this application, and Figure 2 is a connection schematic diagram of the frame and support members in the backlight module shown in Figure 1. The backlight module 000 may include: a frame 100, an optical component 200, a light source component 400, and multiple support members 300.

[0051] The frame 100 in the backlight module 000 may have a receiving cavity a1 and a light outlet a2 communicating with the receiving cavity a1.

[0052] The support member 300 in the backlight module 000 can be fixedly connected to the side of the frame 100 facing the light outlet a2 within the accommodating cavity a1 of the frame 100. Multiple support members 300 can be distributed around the light outlet a2 of the frame 100. It should be noted that the support member 300 in the backlight module 000 can also be integrally formed with the frame 100.

[0053] The optical component 200 in the backlight module 000 can be located at the light outlet a2 of the frame 100, and the edge portion of the optical component 200 can be connected to the support 300.

[0054] In the backlight module 000, the light source component 400 can be fixedly connected to the side of the frame 100 opposite to the light outlet a2 within the accommodating cavity a1 of the frame 100, and the light-emitting surface of the light source component 400 can face the optical component 200. Here, the light source component 400 can be a direct-lit light source, and the backlight module 000 can be a direct-lit backlight module.

[0055] The width of the support member 300 on the side near the optical component 200 can be smaller than the width of the support member 300 on the side away from the optical component 200. For example, the width of each of the plurality of support members 300 in the backlight module 000 on the side near the optical component 200 can be smaller than the width of the support member 300 on the side away from the optical component 200.

[0056] In this embodiment, the backlight module 000 can be assembled in a display device, and the back side of the liquid crystal display panel in the display device can be connected to one side of the optical component 200 in the backlight module 000. Multiple supports 300 are distributed at the light outlet a2 of the frame 100 and can be used to support the optical component 200. Since the width of the support 300 near the optical component 200 is smaller than the width of the support 300 away from the optical component 200, the width of the end of the support 300 near the optical component 200 is reduced. Therefore, the amount of light blocked by the support 300 near the optical component 200 is effectively reduced, allowing more light to mix fully at the edge of the optical component 200 connected to the support 300, thereby reducing the area of ​​the shadow region at the connection between the optical component 200 and the support 300. Furthermore, the support member 300, with the aforementioned arrangement, does not require reducing the overlap width between the optical component 200 and the support member 300, ensuring that the optical component 200 will not detach from the support member 300 during shrinkage. Additionally, after integrating the backlight module 000 into the display device, the display effect of the image on the liquid crystal display panel in the display device is also better.

[0057] In summary, this application provides a backlight module that may include a frame, an optical component, a light source component, and multiple support members. The multiple support members are distributed at the light outlet of the frame and can be used to support the optical component. Since the width of the support member near the optical component is smaller than the width of the support member away from the optical component, the width of the end of the support member near the optical component is reduced. Therefore, the amount of light blocked by the end of the support member near the optical component is effectively reduced, allowing more light to mix fully at the edge of the optical component connected to the support member, thereby reducing the area of ​​the shadow region at the connection between the optical component and the support member. Furthermore, the support member, using the above-described arrangement, does not require reducing the overlap width between the optical component and the support member, ensuring that the optical component will not detach from the support member when shrinking. In addition, after integrating the backlight module into the display device, the display effect of the image on the liquid crystal display panel in the display device is also better.

[0058] Optionally, as shown in Figures 1 and 2, the support member 300 in the backlight module 000 can be plate-shaped, and the cross-sectional width of the support member 300 on the target plane can gradually decrease along the direction of the light source component 400 towards the optical component 200. This target plane can be perpendicular to the plane containing the light outlet a2 of the frame 100 and can also be perpendicular to the plate-shaped support member 300. In this case, when the support member 300 in the backlight module 000 is plate-shaped, by setting the cross-sectional width of the support member 300 on the target plane to gradually decrease along the direction of the light source component 400 towards the optical component 200, the amount of light blocked by the support member 300 from the light source component 400 is further effectively reduced, allowing more light to mix fully at the edge portion of the optical component 200 connected to the support member 300, thereby reducing the area of ​​the shadow region in the area where the optical component 200 and the support member 300 are connected. For example, the cross-sectional shape of the support member 300 on the target plane can be conical.

[0059] In this embodiment, please refer to FIG3, which is a cross-sectional schematic diagram of a support member provided in this embodiment. The support member 300 in the backlight module 000 may have a support portion A1 for supporting the optical component 200. The side of the support portion A1 facing the optical component 200 may be curved or flat. In this case, the side of the support portion A1 facing the optical component 200 can be used to contact the optical component 200 to support the optical component 200. In addition, when the side of the support portion A1 facing the optical component 200 is curved, the contact area between the support portion A1 and the optical component 200 is small, and even if a shadow appears on the optical component 200, the area of ​​the shadow is also small. Furthermore, when the side of the support portion A1 facing the optical component 200 is curved, it is convenient to perform demolding during the process of integrally forming the support member 300 and the frame 100 using injection molding.

[0060] In this application, as shown in FIG3, the width d2 of the support portion A1 in the support member 300 can range from 0.4 mm to 1 mm. In this case, when the width d2 of the support portion A1 ranges from 0.4 mm to 1 mm, while ensuring that the support portion A1 in the support member 300 effectively supports the optical component 200, the amount of light emitted from the light source component 400 is less blocked by the end of the support portion A1 near the optical component 200. This allows more light to be fully mixed at the edge portion of the optical component 200 connected to the support member 300, thereby reducing the area of ​​the shadow region at the connection between the optical component 200 and the support member 300.

[0061] Optionally, please refer to Figures 4, 5, and 6. Figure 4 is a top view of a backlight module provided in an embodiment of this application, Figure 5 is a cross-sectional view of Figure 4 along line A-A', and Figure 6 is a cross-sectional view of Figure 4 along line B-B'. The frame 100 in the backlight module 000 may have an annular support platform B near the edge of the light outlet a2. Optical components 200 may be distributed within the area enclosed by the annular support platform B. The support platform B may have a support surface b facing the optical component 200. A portion of the support surface b of the support platform B may contact a portion of the side surface of the optical component 200, and another portion of the support surface b of the support platform B may have a gap Z between it and another portion of the side surface of the optical component 200. In this configuration, by placing the optical component 200 within the area enclosed by the annular support platform B, a portion of the side surface of the optical component 200 can contact a portion of the support surface b of the support platform B. This ensures a low probability of relative displacement of the optical component 200 relative to the light source component 400 within the frame 100. Furthermore, a gap Z is provided between another portion of the side surface of the optical component 200 and another portion of the support surface b of the support platform B. This provides an expansion gap for the optical component 200, preventing warping when it expands under high-temperature conditions. It should be noted that the width of the gap Z between the other portion of the side surface of the optical component 200 and the other portion of the support surface b of the support platform B can be determined based on the expansion coefficient of the optical component 200; this embodiment does not impose a specific limitation on this.

[0062] In this embodiment, please refer to Figures 7 and 8. Figure 7 is a schematic diagram of another backlight module provided in this embodiment, and Figure 8 is a partially enlarged schematic diagram at point D in Figure 7. The backlight module 000 may further include an adhesive layer 500 located between at least a portion of the support member 300 and the edge portion of the optical component 200. This adhesive layer 500 can be bonded and fixed to the edge portion of both the support member 300 and the optical component 200. In this case, by providing the adhesive layer 500 between at least a portion of the support member 300 and the edge portion of the optical component 200, the edge portion of the optical component 200 can be bonded and fixed to the support member 300, ensuring the connection stability between the optical component 200 and the support member 300. For example, the adhesive layer 500 may be UV adhesive or double-sided adhesive, etc. For example, when the adhesive layer 500 is a UV adhesive, the UV adhesive is applied to the side of the support 300 near the optical component 200, and after the edge of the optical component 200 comes into contact with the UV adhesive, the UV adhesive is cured by a UV lamp.

[0063] Optionally, as shown in Figures 7 and 8, the overlap width h1 between the edge portion of the optical component 200 in the backlight module 000 and the first target support B1 can be greater than the overlap width h2 between the edge portion of the optical component 200 and the second target support B2. The adhesive layer 500 can be located between the first target support B1 and the edge portion of the optical component 200. The first target support B1 can be one of the multiple supports 300 adjacent to the first abutment C1, and the first abutment C1 can be the portion of the abutment B that contacts the side of the optical component 200. The second target support B2 can be one of the multiple supports 300 adjacent to the second abutment C2, and the second abutment C2 can be the portion of the abutment B separated from the side of the optical component 200. Here, the second abutment C2 can be the portion of the abutment B with a gap Z between it and the side of the optical component 200. In this configuration, by setting the overlap width between the edge of the optical component 200 and the first target support B1 to be greater than the overlap width between the edge of the optical component 200 and the second target support B2, and by placing the adhesive layer 500 between the first target support B1 and the edge of the optical component 200, a larger bonding area is achieved between the edge of the optical component 200 and the first target support B1, ensuring the stability of the connection between them. Here, the adhesive layer 500 between the edge of the optical component 200 and the first target support B1 can cover the area of ​​the first target support B1 used to support the edge of the optical component 200. Furthermore, the area between the edge of the optical component 200 and the second target support B2 can be left unbonded, ensuring that the optical component 200 has a certain amount of movement when it expands under high temperatures, thus preventing deformation.

[0064] For example, the assembly process of the optical component 200 and the frame 100 is illustrated here:

[0065] First, determine the placement of the adhesive layer 500 among the multiple support members 300. For example, the adhesive layer 500 is bonded and fixed to one side of the multiple first target support members B1 to ensure the strong adhesion between the adhesive layer 500 and the first target support member B1.

[0066] Then, using the support surface of the first support platform C1 as the assembly reference, the side of the optical component 200 is brought into contact with the support surface of the first support platform C1 to determine the installation position of the optical component 200.

[0067] Finally, the edge portion of the optical component 200 is bonded and fixed to the adhesive layer 500 disposed on the first target support member B1, thereby achieving the connection between the optical component 200 and the first target support member B1.

[0068] In this application, as shown in Figures 4, 5, and 6, there can be two first support platforms C1 and two second support platforms C2. One first support platform C1 and one second support platform C2 can be arranged opposite each other in the first direction f1; the other first support platform C1 and the other second support platform C2 can be arranged opposite each other in the second direction f2. The first direction f1 and the second direction f2 can intersect and are both parallel to the plane of the light outlet a2 of the frame 100. For example, the first direction f1 can be perpendicular to the second direction f2. It should be noted that after the backlight module is integrated into the display device, the liquid crystal display panel in the display device is connected to one side of the optical components in the backlight module. The first and second flip-chip films (not shown in the figures) bonded to the liquid crystal display panel can be distributed on the sides of the two second support platforms C2. The circuit board in the display device can provide gate signals to the liquid crystal display panel through the first flip-chip film, and the circuit board in the display device can also provide source signals to the liquid crystal display panel through the second flip-chip film. It should also be noted that the display device is usually placed vertically during actual use. After the side of the optical component is set to contact the side of the first support platform C1, the optical component 200 is always in contact with the side of the first support platform C1, which reduces the probability of the optical component 200 being relatively offset relative to the light source component 400.

[0069] Optionally, please refer to Figures 5 and 9. Figure 9 is a partial structural schematic diagram of a backlight module provided in an embodiment of this application. The backlight module 000 may further include: a plurality of light-absorbing elements 600. The plurality of light-absorbing elements 600 are fixedly connected to the side of the frame 100 facing the light outlet a2 within the accommodating cavity a1 of the frame 100, and the plurality of light-absorbing elements 600 may be distributed between two adjacent second target support members B2. In this case, since there is a gap Z between the bearing surface of the second support platform C2 adjacent to the second target support member B2 and the side surface of the optical component 200, some of the light emitted by the light source component 400 does not pass through the optical component 200 sufficiently when it passes through the area between the two adjacent second target support members B2, resulting in a phenomenon that the brightness of the displayed image at the edge of the liquid crystal display panel in the display device is too high. Here, by setting the light-absorbing elements 600 between the two adjacent second target support members B2, the light-absorbing elements 600 can absorb a portion of the light passing through this area, ensuring the uniformity of the brightness of the displayed image at the edge of the liquid crystal display panel in the display device. It should be noted that multiple light-absorbing elements 600 can be provided between every two adjacent second target support members B2. For example, the light-absorbing element 600 can be a black ink screen printing dot.

[0070] In this embodiment of the application, as shown in FIG9, the multiple light-absorbing elements 600 between every two adjacent second target support members B2 can be arranged in multiple rows along the direction of the frame 100 toward the light-emitting port a2. Specifically, for two adjacent rows of light-absorbing elements 600, the sum of the areas of the light-absorbing elements in the row closer to the light-emitting port a2 of the frame 100 can be greater than the sum of the areas of the light-absorbing elements in the row further away from the light-emitting port a2 of the frame 100. In this case, by setting the sum of the areas of the light-absorbing elements in the row closer to the light-emitting port a2 of the frame 100 to be greater than the sum of the areas of the light-absorbing elements in the row further away from the light-emitting port a2 of the frame 100, the application achieves this effect. This ensures that the amount of light absorbed by the light-absorbing elements 600 closer to the light-emitting port a2 is greater than that absorbed by the light-absorbing elements 600 further away from the light-emitting port a2, further guaranteeing the uniformity of the edge display brightness of the liquid crystal display panel in the display device. It should be noted that when the light emitted by the light source component 400 passes through the area between two adjacent second target support members B2, the light closer to the light-emitting port a2 is mixed to a lesser extent by the optical component 200 than the light further away from the light-emitting port a2. In this application, the sum of the areas of the light-absorbing elements 600 in different regions is different, allowing for flexible adjustment of the amount of light absorbed by each row of light-absorbing elements 600, thus ensuring the uniformity of the edge display brightness of the liquid crystal display panel in the display device.

[0071] Optionally, for two adjacent rows of light-absorbing elements 600, the distribution density of the light-absorbing elements in the row of light-absorbing elements 600 closer to the light-emitting port a2 of the frame 100 can be greater than the distribution density of the light-absorbing elements in the row of light-absorbing elements 600 further away from the light-emitting port a2 of the frame 100. And / or, for two adjacent rows of light-absorbing elements 600, the area of ​​a single light-absorbing element in the row of light-absorbing elements 600 closer to the light-emitting port a2 of the frame 100 can be greater than the area of ​​a single light-absorbing element in the row of light-absorbing elements further away from the light-emitting port a2 of the frame 100. In this case, by setting different arrangement densities of light absorbers in two adjacent rows of light absorbers 600 and / or different areas of individual light absorbers 600, the amount of light absorbed by each row of light absorbers 600 closer to the light outlet a2 of the frame 100 is greater than the amount of light absorbed by each row of light absorbers further away from the light outlet a2 of the frame 100, thereby further ensuring the uniformity of the edge display brightness of the liquid crystal display panel in the display device.

[0072] For example, regarding the arrangement of light absorbers in two adjacent rows of light absorbers 600, in one possible implementation, the distribution density of light absorbers in the row of light absorbers 600 closer to the light outlet a2 of the frame 100 can be greater than the distribution density of light absorbers in the row of light absorbers 600 further away from the light outlet a2 of the frame 100. In another possible implementation, for two adjacent rows of light absorbers 600, the area of ​​a single light absorber in the row of light absorbers 600 closer to the light outlet a2 of the frame 100 can be greater than the area of ​​a single light absorber in the row of light absorbers 600 further away from the light outlet a2 of the frame 100. In another possible implementation, for two adjacent rows of light absorbers 600, the distribution density of the light absorbers in the row of light absorbers 600 closer to the light outlet a2 of the frame 100 can be greater than the distribution density of the light absorbers in the row of light absorbers 600 further away from the light outlet a2 of the frame 100, and the area of ​​a single light absorber in the row of light absorbers 600 closer to the light outlet a2 of the frame 100 can be greater than the area of ​​a single light absorber in the row of light absorbers 600 further away from the light outlet a2 of the frame 100.

[0073] In this embodiment, please refer to Figure 10, which is a schematic diagram of another backlight module provided in this embodiment. The optical component 200 in the backlight module 000 may include: a diffuser plate 200a, a lower prism sheet 200b, an upper prism sheet 200c, and a diffuser plate 200d stacked along a direction perpendicular to and away from the light-emitting surface of the light source component 400. The side of the diffuser plate 200a near the support member 300 may be connected to the support member 300. It should be noted that the stacking order of the diffuser plate 200a, the lower prism sheet 200b, the upper prism sheet 200c, and the diffuser plate 200d can also be appropriately adjusted, and this embodiment does not limit this. It should also be noted that Figure 2 only schematically shows that the optical component 200 includes one diffuser plate, one diffuser plate, and two prism sheets. In other optional implementations, the optical component may also include more diffuser plates, diffuser sheets, or prism sheets, and this embodiment does not limit this.

[0074] Optionally, as shown in Figure 10, the light source component 400 in the backlight module 000 may include: a back plate 400a fixedly connected to the frame 100, and a lamp plate 400b fixed on the back plate 400a. The light emitted by the lamp plate 400b is uniformly emitted after passing through the optical component 200, so that the backlight module 000 can provide a light source for the liquid crystal display panel in the display device.

[0075] In summary, this application provides a backlight module that may include a frame, an optical component, a light source component, and multiple support members. The multiple support members are distributed at the light outlet of the frame and can be used to support the optical component. Since the width of the support member near the optical component is smaller than the width of the support member away from the optical component, the width of the end of the support member near the optical component is reduced. Therefore, the amount of light blocked by the end of the support member near the optical component is effectively reduced, allowing more light to mix fully at the edge of the optical component connected to the support member, thereby reducing the area of ​​the shadow region at the connection between the optical component and the support member. Furthermore, the support member, using the above-described arrangement, does not require reducing the overlap width between the optical component and the support member, ensuring that the optical component will not detach from the support member when shrinking. In addition, after integrating the backlight module into the display device, the display effect of the image on the liquid crystal display panel in the display device is also better.

[0076] This application also provides a display device. Please refer to FIG11, which is a schematic diagram of the structure of a display device provided in this application embodiment. The display device may include: a liquid crystal display panel 001 and a backlight module 000. The back side of the liquid crystal display panel 001 may be connected to one side of the optical component 200 in the backlight module 000. For example, the backlight module 000 may be any of the backlight modules given above. In this way, the light emitted by the light source component 400 in the backlight module 000 is uniformly emitted after being processed by the optical component 200, and this part of the light can provide a light source for the liquid crystal display panel 001 in the display device.

[0077] This application embodiment also provides a video wall, which may include multiple spliced ​​display devices, each of which may include the display devices given above. Thus, after splicing multiple display devices to form a video wall, the display effect of the video wall at the splicing point between two adjacent display devices is better.

[0078] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0079] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0080] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A backlight module, characterized in that, include: The frame, optical components, light source components, and multiple support components; The frame has a receiving cavity and a light outlet communicating with the receiving cavity; The support member is fixedly connected to the side of the frame facing the light outlet within the accommodating cavity, and the plurality of support members are distributed around the light outlet; The optical component is located at the light outlet, and the edge portion of the optical component is connected to the support member; The light source component is fixedly connected to the side of the frame away from the light outlet within the accommodating cavity, and the light-emitting surface of the light source component faces the optical component. The width of the support member on the side closest to the optical component is smaller than the width of the support member on the side away from the optical component.

2. The backlight module according to claim 1, characterized in that, The support member is plate-shaped, and the cross-sectional width of the support member on the target plane gradually decreases along the direction of the light source component closer to the optical component; The target plane is perpendicular to the plane where the light outlet is located, and also perpendicular to the plate-shaped support member.

3. The backlight module according to claim 1, characterized in that, The support member has a support portion for supporting the optical component, and the side of the support portion facing the optical component is an arc surface or a plane.

4. The backlight module according to claim 3, characterized in that, The width of the support portion ranges from 0.4 mm to 1 mm.

5. The backlight module according to any one of claims 1-4, characterized in that, The frame has an annular support platform near the edge of the light outlet. The optical components are distributed within the area enclosed by the support platform. The support platform has a support surface facing the optical components. A portion of the support surface contacts a portion of the side of the optical components, and a gap exists between another portion of the support surface and another portion of the side of the optical components.

6. The backlight module according to claim 5, characterized in that, The backlight module further includes an adhesive layer located between at least a portion of the support member and the edge portion of the optical component, the adhesive layer being bonded and fixed to the edge portion of the support member and the edge portion of the optical component respectively.

7. The backlight module according to claim 6, characterized in that, The overlap width between the edge portion of the optical component and the first target support is greater than the overlap width between the edge portion of the optical component and the second target support. The adhesive layer is located between the edge portion of the first target support and the optical component; Wherein, the first target support is the support that is adjacent to the first support platform among the plurality of support members, and the first support platform is the part of the support platform that contacts the side of the optical component; the second target support is the support that is adjacent to the second support platform among the plurality of support members, and the second support platform is the part of the support platform that is separated from the side of the optical component.

8. The backlight module according to claim 7, characterized in that, The backlight module further includes: multiple light-absorbing elements, which are fixedly connected to the side of the frame facing the light outlet within the accommodating cavity, and the multiple light-absorbing elements are distributed between two adjacent second target support members.

9. The backlight module according to claim 8, characterized in that, The plurality of light-absorbing elements are arranged in multiple rows along the frame toward the light-emitting port; Among them, for two adjacent rows of light-absorbing elements, the sum of the areas of each light-absorbing element in the row closer to the light outlet is greater than the sum of the areas of each light-absorbing element in the row further away from the light outlet.

10. The backlight module according to claim 9, characterized in that, For two adjacent rows of light absorbers, the distribution density of light absorbers in the row closer to the light outlet is greater than the distribution density of light absorbers in the row further away from the light outlet; and / or, the area of ​​a single light absorber in the row closer to the light outlet is greater than the area of ​​a single light absorber in the row further away from the light outlet.

11. The backlight module according to claim 7, characterized in that, There are two first support platforms and two second support platforms. One first support platform and one second support platform are arranged opposite each other in a first direction, and the other first support platform and the other second support platform are arranged opposite each other in a second direction. The first direction and the second direction intersect and are both parallel to the plane where the light outlet is located.

12. The backlight module according to any one of claims 1-4 and 6-11, characterized in that, The optical component includes a diffuser plate, a lower prism plate, an upper prism plate, and a diffuser sheet stacked in a direction perpendicular to and away from the light-emitting surface of the light source component, wherein the side of the diffuser plate closest to the support is connected to the support.

13. The backlight module according to any one of claims 1-4 and 6-11, characterized in that, The light source component includes: a back plate fixedly connected to the frame, and a lamp plate fixed to the back plate.

14. A display device, characterized in that, include: A liquid crystal display panel and a backlight module, wherein the back side of the liquid crystal display panel is connected to one side of an optical component in the backlight module, and the backlight module is the backlight module according to any one of claims 1-13.

15. A video wall, characterized in that, include: Multiple spliced ​​display devices, the display devices including: the display device of claim 14.

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