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Backlight module and liquid crystal display device

A technology of backlight module and backplane, which is applied in the direction of lighting devices, fixed lighting devices, components of lighting devices, etc. It can solve problems such as chromaticity shift, brightness drop, color saturation deviation, etc., and achieve increased brightness and color Effects of saturation, reducing thickness, and avoiding chroma shift

Active Publication Date: 2015-08-19
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] The present invention mainly solves the technical problems of brightness reduction, color saturation deviation and chromaticity shift caused by the use of fluorescent powder in the prior art liquid crystal display device, and provides a backlight module and a liquid crystal display device, which can effectively increase the brightness and color Problems with saturation and avoiding hue shift

Method used

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  • Backlight module and liquid crystal display device
  • Backlight module and liquid crystal display device

Examples

Experimental program
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Embodiment Construction

[0018] see figure 1 , is a schematic structural diagram of an embodiment of the backlight module of the present invention. The backlight module in this embodiment includes but is not limited to a diffusion plate 11 , a substrate 12 , a fluorescent layer 13 and a light emitting chip 14 .

[0019] This embodiment does not limit the material of the diffuser plate 11, it only needs to be used to interfere with the light to achieve uniform diffusion of light; in other embodiments, in order to improve the light resistance of the diffuser plate 11 and not easily turn yellow, Choose materials with low refractive index and high transparency (such as plastic crystals, etc.), and you can also add materials such as diffusing agents to improve their uniform diffusion performance for light.

[0020] The base plate 12 and the diffuser plate 11 are arranged opposite to each other, wherein the relative arrangement can be mutually parallel and spaced apart, or can be mutually inclined and space...

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Abstract

A backlight module and a liquid crystal display device. The backlight module comprises a diffusion plate (11), a substrate (12), a fluorescent layer (13), and a light-emitting chip (14). The fluorescent layer (13) is disposed on a light incident surface of the diffusion plate (11), and comprises quantum dot materials. The light-emitting chip (14) is disposed on the substrate (12) and located between the substrate (12) and the fluorescent layer (13), and is used for irradiating the fluorescent layer (13) to excite the quantum dot materials to emit light and form a backlight source. The quantum dot materials can be used to effectively improve the luminance and color saturation of the emitted light, and effectively avoid problems such as chroma offset. The quantum dot materials produce uniform light and reduce the thickness of the backlight module.

Description

technical field [0001] The invention relates to the technical field of liquid crystals, in particular to a backlight module and a liquid crystal display device using the backlight module. Background technique [0002] The backlight source of LCD (liquid crystal display device) generally includes white LED (light emitting diode) and CCFL (Cold Cathode Fluorescent Lamp, cold cathode fluorescent lamp), wherein, white LED is more environmentally friendly and efficient than CCFL. [0003] In the prior art, white LEDs mainly use blue light-emitting diode chip + YAG (Yttrium Aluminum Garnet, yttrium aluminum garnet, aluminum oxide synthetic spar used to generate laser beams) to mix to obtain white light. However, YAG is easily oxidized by high temperature and has disadvantages such as temperature quenching, which has great limitations in technology and application. White light LED is mainly packaged by Phosphor (phosphor powder) and Chip (light-emitting chip). Specifically, in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S8/00F21V9/10F21V19/00F21V29/89G02F1/13357F21Y101/02F21V9/40F21V29/10
CPCG02F1/133602G02F2001/01791G02F2001/133614G02F1/01791G02F1/133614
Inventor 王烨文
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD