CN-224216970-U - Backlight module and display device

Abstract

The embodiment of the utility model provides a backlight module and a display device, wherein the backlight module is used for providing backlight for the display device and comprises a back plate, a light source module, a light guide plate and a shielding member. The backboard is provided with a side wall and a bottom wall, and the side wall and the bottom wall are enclosed to form an inner cavity. The light source module and the light guide plate are respectively arranged in the inner cavity. The shielding member is arranged between the side wall and the light guide plate. The shielding member comprises a light part and a dark part, wherein the light part is adjacent to the bottom wall, and the dark part is far away from the bottom wall.

Inventors

• CHEN YONGYU
• HUANG JUNWEI

Assignees

• 苏州佳世达电通有限公司
• 佳世达科技股份有限公司

Dates

Publication Date

20260508

Application Date

20250611

Claims (10)

1. 1. A backlight module for providing backlight for a display device, comprising: the backboard comprises a side wall and a bottom wall, and an inner cavity is formed by surrounding the side wall and the bottom wall; the light source module is arranged in the inner cavity; a light guide plate disposed in the cavity, and A shielding member arranged between the side wall and the light guide plate; The shielding member comprises a light color part and a dark color part, wherein the light color part is adjacent to the bottom wall, and the dark color part is far away from the bottom wall.
2. 2. The backlight module according to claim 1, wherein the light-colored portion corresponds to the light guide plate.
3. 3. A backlight module according to claim 1, further comprising a frame disposed outside the side wall and extending across the free end side of the side wall and toward the inside of the side wall.
4. 4. The backlight module according to claim 1, wherein a phosphor layer is disposed on a surface of the dark portion opposite to the bottom wall, and the dark portion is located between the phosphor layer and the light portion; or the surface of the light-colored part opposite to the side wall is provided with a fluorescent powder layer, and the fluorescent powder layer is positioned between the light-colored part and the light guide plate.
5. 5. The backlight module according to claim 4, wherein the light source module comprises a blue light emitting diode, and the phosphor layer is a yellow phosphor layer.
6. 6. A backlight module according to claim 1, wherein the shielding member is annular, and the shielding member is disposed around the inner cavity and fixed to the side wall.
7. 7. The backlight module according to claim 1, wherein the shielding member is a double-color rubber ring; Wherein the light color part is white or gray, and the dark color part is black.
8. 8. The backlight module according to claim 7, wherein the light portion and the dark portion are integrally formed.
9. 9. A display device, comprising: a liquid crystal panel having a light emitting surface and a light incident surface, and The backlight module according to any one of claims 1 to 8, wherein the backlight module is disposed on the light incident surface side of the liquid crystal panel.
10. 10. The display device according to claim 9, wherein the edge of the liquid crystal panel has a black area, and the shielding member of the backlight module is disposed in a vertical projection range of the black area.

Description

Backlight module and display device Technical Field The present utility model relates to a backlight module and a display device, and more particularly to a backlight module and a display device for improving corner light leakage. Background Some displays have a backlight module, which typically includes a light guide plate (LGP, light Guide Plate). The light guide plate and the back plate side wall of the backlight module have a fit tolerance to generate a gap, and light passing through the end face of the light guide plate is easy to scatter in the gap to be out of control, so that light leakage at the edge of the screen is caused. In the prior art, a black shielding member is disposed between the back plate side wall of the backlight module and the end surface of the light guide plate to absorb the excessive light, but this results in a darker brightness of the screen than the central area of the screen. Therefore, how to design the backlight module to solve the problem of light leakage at the edge of the screen, and also to ensure uniform brightness of the screen picture becomes a new research topic. Disclosure of utility model The utility model aims to provide a backlight module and a display device which can solve the problem of light leakage at the edge of a screen and can ensure uniform brightness of the screen picture. In order to achieve the above object, the present utility model provides a backlight module, comprising: the backboard comprises a side wall and a bottom wall, and an inner cavity is formed by surrounding the side wall and the bottom wall; the light source module is arranged in the inner cavity; a light guide plate disposed in the cavity, and A shielding member arranged between the side wall and the light guide plate; The shielding member comprises a light color part and a dark color part, wherein the light color part is adjacent to the bottom wall, and the dark color part is far away from the bottom wall. Preferably, the light-colored portion corresponds to the light guide plate. Preferably, the frame is disposed outside the side wall, spans the free end side of the side wall, and extends toward the inside of the side wall. Preferably, a fluorescent powder layer is arranged on the surface of the dark color part opposite to the bottom wall, and the dark color part is positioned between the fluorescent powder layer and the light color part; or the surface of the light-colored part opposite to the side wall is provided with a fluorescent powder layer, and the fluorescent powder layer is positioned between the light-colored part and the light guide plate. Further preferably, the light source module includes a blue light emitting diode, and the phosphor layer is a yellow phosphor layer, respectively. Preferably, the shielding member is annular, and the shielding member is annularly arranged in the inner cavity and fixed on the side wall. Preferably, the shield is a double-colored rubber ring; Wherein the light color part is white or gray, and the dark color part is black. Further preferably, the light portion is integrally formed with the dark portion. In order to achieve the above object, the present utility model further provides a display device, comprising: a liquid crystal panel having a light emitting surface and a light incident surface, and The backlight module is arranged on the light incident surface side of the liquid crystal panel. Further preferably, the edge of the liquid crystal panel has a black edge region, and the shielding member of the backlight module is disposed in a vertical projection range of the black edge region. Compared with the prior art, the backlight module provided by the embodiment of the utility model is used for providing backlight for the display device, and comprises a back plate, a light source module, a light guide plate and a shielding member. The backboard is provided with a side wall and a bottom wall, and the side wall and the bottom wall are enclosed to form an inner cavity. The light source module and the light guide plate are respectively arranged in the inner cavity. The shielding member is arranged between the side wall and the light guide plate. The shielding member comprises a light part and a dark part, wherein the light part is adjacent to the bottom wall, and the dark part is far away from the bottom wall. Drawings FIG. 1 is a schematic cross-sectional view of a display device according to an embodiment of the utility model; FIG. 2 is an enlarged schematic view of the area A in FIG. 1; FIG. 3 is a schematic cross-sectional view of a display device according to another embodiment of the present utility model; fig. 4 is an enlarged schematic view of the area B in fig. 3. Detailed Description For a further understanding of the objects, construction, features, and functions of the utility model, reference should be made to the following detailed description of the preferred embodiments. Certain terms are used throughout the description an