CN-224216971-U - Backlight module for television and television

CN224216971UCN 224216971 UCN224216971 UCN 224216971UCN-224216971-U

Abstract

The application relates to the technical field of liquid crystal display and discloses a backlight module for a television and the television. The backlight module comprises a back plate, lamp strips, reflecting sheets, a diffusion plate, a cavity, a diffusion plate and a liquid crystal panel, wherein the top and bottom sides of the back plate are arc-shaped, the two lamp strips are arranged on the back plate in parallel to the top and bottom sides, a plurality of lamp beads on each lamp strip are arranged on the lamp strips according to the rule that edges of the lamp strips are sparse and middle dense, the reflecting sheets are adhered to the back plate and can expose the lamp beads on the lamp strips, the diffusion plate covers the reflecting sheets to form the cavity with the reflecting sheets, the reflecting sheets are the lower surface of the cavity, the diffusion plate is the upper surface of the cavity, a plurality of support columns are arranged in the cavity to support the diffusion plate, and the liquid crystal panel is covered on the diffusion plate and used for displaying pictures. The application adopts a small number of lamp bars, and can realize good display brightness, visual effect and picture uniformity.

Inventors

MENG JIAO
GAO SHANG
HUANG JUNJIE
GUO YUBIN
JIAO QINGHAI

Assignees

青岛海尔多媒体有限公司
海尔智家股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250613

Claims (10)

1. A backlight module for a television, comprising: The top and bottom sides of the backboard are arc-shaped structures; The lamp strips are arranged on the backboard in parallel to the top and bottom sides, and a plurality of lamp beads on each lamp strip are arranged on the lamp strips according to the rule that the edges are sparse and the edges are dense; the reflecting sheet is adhered to the back plate and can expose the lamp beads on the lamp strip; the diffusion plate is covered on the reflection sheet and forms a cavity with the reflection sheet, the reflection sheet is the lower surface of the cavity, the diffusion plate is the upper surface of the cavity, and a plurality of support columns are arranged in the cavity and form a support for the diffusion plate; And the liquid crystal panel is covered on the diffusion plate and is used for displaying pictures.
2. A backlight module according to claim 1, wherein, The arc-shaped structure of the top and bottom sides of the backboard occupies 1/3 to 2/3 of the width of the backboard.
3. A backlight module according to claim 1, wherein, The heights of the support columns are the same so as to ensure that the distance between the upper surface of the lamp strip and the lower surface of the diffusion plate is OD value.
4. A backlight module according to claim 1, wherein, A plurality of light holes are formed in the left side edge and the right side edge of the reflecting plate, so that light rays in the cavity overflow between the reflecting plate and the backboard.
5. A backlight module according to any one of claims 1 to 4, further comprising: The brightening film covers the upper surface of the diffusion plate and is positioned between the diffusion plate and the liquid crystal panel.
6. A backlight module according to any one of claims 1 to 4, further comprising: And the cushion block is arranged between the back plate and the reflecting sheet and is used for improving the radian of the reflecting sheet.
7. A backlight module according to claim 6, further comprising: the gasket is arranged on the cushion block, and the reflecting sheet is adhered to the gasket, so that the gasket forms gentle transition to the reflecting sheet.
8. A backlight module according to claim 6, wherein, The thickness of the gasket is 0.3mm to 0.5mm.
9. A backlight module according to any one of claims 1 to 4, further comprising: and the heat conducting adhesive layer is arranged between the lamp strip and the back plate and is used for improving the heat dissipation efficiency of the lamp strip.
10. A television set, comprising: a backlight module for a television set according to any one of claims 1 to 9.

Description

Backlight module for television and television Technical Field The application relates to the technical field of televisions, in particular to a backlight module for a television and the television. Background Currently, in the technical field of liquid crystal display, a backlight module is a key component for realizing the screen lighting of a television, and the performance of the backlight module directly influences the brightness, uniformity and visual effect of the display of the television. With the popularization of liquid crystal televisions, how to effectively control the cost while ensuring the display effect becomes a major research problem in the field. In the related art, in order to effectively control the cost, a scheme of reducing the number of light bars is adopted in some backlight modules. For example, for a relatively small size lcd tv of 55 inches or the like, a backlight scheme using a single light bar has been proposed. By reducing the number of the lamp bars, the scheme reduces the material cost for preparing the backlight module. In implementing the process implemented by the present disclosure, it is found that the related art has at least the following technical problems: In the related art, in the scheme of reducing the number of the lamp bars in the small-sized liquid crystal television, although the material cost for preparing the backlight module is reduced, the problem of uneven display brightness exists, and the visual experience of a user is seriously affected. And for large-size liquid crystal televisions, if a scheme for reducing the number of lamp bars is adopted, the problem of uneven display brightness is more remarkable. Therefore, how to use a smaller number of light bars to achieve good display brightness, visual effect and uniformity of images for a large-sized backlight module becomes a technical problem to be solved. It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the application and thus may include information that does not form the prior art that is already known to those of ordinary skill in the art. Disclosure of utility model The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview, and is intended to neither identify key/critical elements nor delineate the scope of such embodiments, but is intended as a prelude to the more detailed description that follows. The embodiment of the disclosure provides a backlight module for a television and the television. With a smaller number of light bars, good display brightness, visual effect and picture uniformity can be achieved. In some embodiments, a backlight module for a television comprises a back plate, lamp bars, a reflector plate, a diffusion plate and a liquid crystal panel, wherein the top and bottom sides of the back plate are arc-shaped, the lamp bars are arranged on the back plate in parallel to the top and bottom sides, a plurality of lamp beads on each lamp bar are arranged on the lamp bars according to a rule that edges of the lamp beads are sparse and dense, the reflector plate is adhered to the back plate and can expose the lamp beads on the lamp bars, the diffusion plate covers the reflector plate and forms a cavity with the reflector plate, the reflector plate is the lower surface of the cavity, the diffusion plate is the upper surface of the cavity, a plurality of support columns are arranged in the cavity and form support for the diffusion plate, and the liquid crystal panel covers the diffusion plate and is used for displaying pictures. Optionally, the arc-shaped structure of the top and bottom sides of the backboard occupies 1/3 to 2/3 of the width of the backboard. Optionally, the heights of the plurality of support columns are the same to ensure that the distance between the upper surface of the light bar and the lower surface of the diffusion plate is OD. Optionally, a plurality of light holes are formed on the left side edge and the right side edge of the reflecting plate, so that light in the cavity overflows between the reflecting plate and the back plate. Optionally, the backlight module further comprises a brightness enhancement film covering the upper surface of the diffusion plate and positioned between the diffusion plate and the liquid crystal panel. Optionally, the backlight module further comprises a cushion block arranged between the back plate and the reflecting sheet for improving radian of the reflecting sheet. Optionally, the backlight module further comprises a gasket, wherein the gasket is arranged on the cushion block, and the reflecting sheet is adhered to the gasket so that the gasket forms gentle transition to the reflecting sheet. Alternatively, the shim thickness is 0.3mm to 0.5mm. Optionally, the backlight module further comprises a heat conducting adhesive layer