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Direct type backlight module

A backlight module and direct type technology, applied in the field of direct type backlight modules, can solve the problems of a large number of LED lamps and high production costs, and achieve the effects of reduced production costs, good heat dissipation performance, and uniform backlight brightness.

Active Publication Date: 2014-07-23
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the cost of LED backlight accounts for about 40% of the cost of the entire direct-type backlight module, the number of LED lamps used in the backlight of the above-mentioned direct-type backlight module is huge, and its production cost is relatively high.

Method used

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Examples

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Embodiment Construction

[0025] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.

[0026] see image 3 and Figure 4 A direct type backlight module of the present invention includes: a backlight frame 2 , a backlight 4 installed in the backlight frame 2 , and a diffusion plate 8 installed on the backlight frame 2 and above the backlight 4 . The backlight frame 2 is used to carry the backlight 4 and the diffusion plate 8 . The light provided by the backlight source 4 is uniformized by the diffuser plate 8 to form a surface light source and supplied to the liquid crystal display panel.

[0027] The backlight 4 includes a PCB (Printed Circuit Board, printed circuit board) 42 , and one or several high-power LED lamps 41 mounted on the PCB 42 and electrically connected to the PCB 42 . The advantage of adopting the backlight so...

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Abstract

The invention provides a direct type backlight module. The direct type backlight module comprises a backlight frame (2), backlight sources (4) arranged inside the backlight frame (2), and a diffusion plate (8) arranged on the backlight frame (2) and located above the backlight sources (4). The backlight frame (2) comprises a bottom frame (22) and a plurality of side plates (24) located on the outer edges of the bottom frame. The backlight sources (4) are arranged on the bottom frame. Each backlight source (4) comprises one or more high-power LED lamps (41). The diffusion plate (8) is provided with a polished face (82) facing towards the backlight sources (4). The direct type backlight module has good heat dissipation performance, luminance of backlight provided by the direct type backlight module is uniform, and production cost can be reduced.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a direct type backlight module. Background technique [0002] A liquid crystal display (LCD, Liquid Crystal Display) has many advantages such as a thin body, power saving, and no radiation, and has been widely used. Most of the liquid crystal display devices currently on the market are backlight liquid crystal display devices, which include a liquid crystal panel and a backlight module. The working principle of the liquid crystal panel is to place liquid crystal molecules between two parallel glass substrates. There are many vertical and horizontal small wires between the two glass substrates. The direction of the liquid crystal molecules is controlled by electrifying or not, and the light of the backlight module is refracted. Come out to generate the picture. Since the liquid crystal panel itself does not emit light, the light source provided by the backlight module is ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V19/00F21V5/08F21Y101/02F21Y115/10
CPCG02F1/133603G02F1/133628G02F1/133607G02F1/133606
Inventor 张彦学
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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