CN-224232076-U - Backlight module and display device

Abstract

The application provides a backlight module and a display device, wherein the backlight module comprises a substrate; the LED lamp comprises a substrate, a plurality of light emitting units, a reflecting cover, a diffusion layer and a diffusion layer, wherein the light emitting units are arranged on the substrate, the reflecting cover is connected with the substrate and provided with a plurality of mutually separated reflecting cavities, each reflecting cavity correspondingly accommodates one light emitting unit, and the diffusion layer is fixed on one side, far away from the substrate, of the reflecting cover and is connected with the reflecting cover. The backlight module can effectively inhibit halation and crosstalk phenomena so as to improve the optical performance of the backlight module.

Inventors

• YANG HAO
• LI PEI
• Wan Niankang

Assignees

• 惠州视维新技术有限公司

Dates

Publication Date

20260512

Application Date

20250509

Claims (10)

1. 1. A backlight module, comprising: A substrate; a plurality of light emitting units disposed on the substrate; The reflecting cover is connected with the substrate and provided with a plurality of reflecting cavities which are separated from each other, and each reflecting cavity correspondingly accommodates one light-emitting unit; And the diffusion layer is fixed on one side of the reflecting cover away from the substrate.
2. 2. The backlight module according to claim 1, wherein the diffusion layer has a plurality of openings capable of exposing a part of the structure of the reflection housing, and further comprising a fixing member for fixing the diffusion layer and the reflection housing through the openings.
3. 3. The backlight module according to claim 2, wherein the fixing member comprises a UV gel filled in the opening of the diffusion layer and connected with the reflection housing.
4. 4. The backlight module according to claim 2, wherein the reflective cover comprises a plurality of interconnected lamp cups, each lamp cup comprises a bottom wall and a side wall, the bottom wall is provided with a lamp hole, the light emitting unit is arranged in the lamp hole in a penetrating manner, and the side walls are connected with the bottom wall and jointly enclose the reflective cavity.
5. 5. The backlight module according to claim 4, wherein an edge of the sidewall away from the bottom wall is exposed at the opening of the diffusion layer.
6. 6. A backlight module according to claim 5, wherein the opening extends in the same direction as the side wall extends away from the edge of the bottom wall.
7. 7. A backlight module according to claim 5, wherein the side wall further comprises a side portion, the side portion is disposed at an edge of the side wall away from the bottom wall, a side surface of the side portion, which is close to the diffusion layer, is parallel to a side surface of the diffusion layer, which is close to the light emitting unit, the side portion is abutted to the diffusion layer, and a part of the structure of the side portion is exposed from the opening of the diffusion layer.
8. 8. A backlight module according to claim 4, wherein the side wall is provided with bumps or ribs on a side close to the reflective cavity.
9. 9. A backlight module according to claim 4, wherein a side of the sidewall of the lamp cup adjacent to the reflective cavity is a cambered surface or a plane.
10. 10. A display device, comprising: A backlight module, the backlight module being the backlight module according to any one of claims 1 to 9; The display panel is arranged on the light emitting side of the backlight module.

Description

Backlight module and display device Technical Field The present utility model relates to the field of display technologies, and in particular, to a backlight module and a display device. Background In the prior art, regarding to the halation control of the Mini LED backlight panel, a diffusion plate is generally disposed on the light emitting side of the light emitting unit to achieve uniform light diffusion. However, when the whole machine is in an upright state, the diffusion plate is liable to arch, and a gap is formed between the diffusion plate and the reflection sheet around the light emitting unit. Such gaps cause light rays emitted from the LEDs to penetrate and interfere with the light field of adjacent LEDs, thereby creating a crosstalk phenomenon. In addition, the diffuser plate is not uniformly arched in different locations, which further exacerbates the halation and non-uniformity of the zoned light management effect. This non-uniformity is particularly pronounced in different areas, which severely affects the optical performance of the overall machine. Disclosure of utility model The embodiment of the application provides a backlight module and a display device, which can effectively inhibit halation and crosstalk phenomena so as to improve the optical performance of the backlight module. The embodiment of the application provides a backlight module, which comprises: A substrate; a plurality of light emitting units disposed on the substrate; The reflecting cover is connected with the substrate and provided with a plurality of reflecting cavities which are separated from each other, and each reflecting cavity correspondingly accommodates one light-emitting unit; And the diffusion layer is fixed on one side of the reflecting cover away from the substrate. In some embodiments, the diffusion layer has a plurality of openings capable of exposing a portion of the reflective cover, and the backlight module further includes a fixing member for fixing the diffusion layer and the reflective cover through the openings. In some embodiments, the fixing member includes a UV gel filled in the opening of the diffusion layer and connected with the reflection housing. In some embodiments, the reflective cover includes a plurality of interconnected lamp cups, each lamp cup includes a bottom wall and a side wall, the bottom wall has a lamp hole, the light emitting unit is disposed through the lamp hole, and the side wall is connected with the bottom wall and encloses to form the reflective cavity. In some embodiments, an edge of the sidewall distal from the bottom wall is exposed at an opening of the diffusion layer. In some embodiments, the opening extends in the same direction as the side wall extends away from the edge of the bottom wall. In some embodiments, the side wall further has a side portion, the side portion is disposed at an edge of the side wall away from the bottom wall, a side surface of the side portion, which is close to the diffusion layer, is parallel to a side surface of the diffusion layer, which is close to the light emitting unit, the side portion is abutted to the diffusion layer, and a part of the structure of the side portion is exposed to the opening of the diffusion layer. In some embodiments, the side wall is provided with a bump or a rib on a side near the reflective cavity. In some embodiments, a side of the sidewall of the lamp cup adjacent to the reflective cavity is a cambered surface or a plane. The embodiment of the application also provides a display device, which comprises: The backlight module is the backlight module; The display panel is arranged on the light emitting side of the backlight module. In the backlight module and the display device provided by the embodiment of the application, the backlight module comprises the substrate, a plurality of light-emitting units, the reflecting cover and the diffusion layer, wherein the light-emitting units are arranged on the substrate, the reflecting cover is connected with the substrate, the reflecting cover is provided with a plurality of mutually separated reflecting cavities, and each reflecting cavity correspondingly accommodates one light-emitting unit. The diffusion layer is fixed on one side of the reflecting cover far away from the substrate, and the diffusion layer has the function of further homogenizing the light collected in the reflecting cavity so as to ensure uniform and consistent light output of the whole backlight module. The diffusion layer is connected with the reflecting cover, so that the diffusion layer is tightly attached to the reflecting cover, and the problem of gaps caused by the camber of the diffusion layer in the vertical state of the whole backlight module is effectively restrained, thereby remarkably improving the optical performance of the backlight module. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are re