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Backlight module utilizing ambient light and liquid crystal display device comprising same

A liquid crystal display device and backlight technology, applied in the direction of lighting devices, light source fixing, lighting device components, etc., can solve the problems of small adjustable range, increased power consumption, and shortened light source life, so as to reduce power consumption , low cost and simple structure

Inactive Publication Date: 2012-06-13
NANJING CEC PANDA LCD TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are three disadvantages in doing so: (1) The adjustable range is small; (2) Increase the heat while increasing the current, which is likely to shorten the life of the light source; (3) Increase the consumption of electric energy

Method used

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  • Backlight module utilizing ambient light and liquid crystal display device comprising same
  • Backlight module utilizing ambient light and liquid crystal display device comprising same

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Such as figure 1 As shown: a backlight module using ambient light, the backlight module 30 includes a plastic bracket 31, a backplane 32, a reflection device 33, a light source 34, a diffusion plate 35 and an optical film set 36, wherein the backplane 32 It is located on the lower side of the plastic bracket 31 and forms a cavity with the plastic bracket 31. A reflection device 33 is provided on the back plate 32. A light source 34 is provided on the reflection device 33. A diffuser plate 35 and an optical film are sequentially provided above the light source 34. Group 36. Be provided with light diffuser 37 on reflector 33, and light diffuser 37 is positioned between light sources 34 and is arranged at intervals with light source 33, and light diffuser 37 passes reflector 33 and connects with one end of light conduction device 38, light conducti...

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PUM

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Abstract

The invention discloses a backlight module utilizing ambient light and a liquid crystal display device comprising the same. The liquid crystal display device comprises a metal frame (10), a liquid crystal panel (20) and a backlight module (30), wherein the backlight module (30) comprises a plastic bracket (31), a back plate (32), a reflection device (33), a light source (34), a diffusion plate (35) and an optical membrane group (36); the reflection device (33) is provided with a light diffusion device (37); the light diffusion device (37) passes through the reflection device (33) to be connected with one end of a light transmission device (38); and the other end of the light transmission device (38) is connected with a light source acquisition device (39) capable of collecting ambient light. According to the invention, the luminance of the display panel can be regulated in due time according to the intensity of the ambient light, electricity energy consumption is lowered, and the liquid crystal display device has the characteristics of simple structure, low cost, good use effect and low energy consumption, is convenient to assemble and is suitable to be popularized and used.

Description

technical field [0001] The invention relates to a backlight source module and its liquid crystal display device, in particular to a backlight source module and its liquid crystal display device utilizing ambient light. Background technique [0002] Because the LCD panel itself cannot emit light, it needs to rely on the backlight to illuminate it. The existing backlight needs to rely on the light source in it to emit light, such as LED (Light Emitting Diode) or CCFL (Cold Cathode Fluorescent Lamp). Under normal circumstances, the brightness of the liquid crystal display is fixed or the adjustment range is small, but if the ambient light is good, such as in a sunny day with sufficient light, the brightness of the liquid crystal display is relatively dark; In poor conditions (such as at night), the brightness of the LCD display is too bright compared to the brightness of the environment, or it is a bit dazzling. In order to solve this problem, many manufacturers will attach ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S19/00F21V13/12F21V17/10G02F1/13357
Inventor 倪明明
Owner NANJING CEC PANDA LCD TECH
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