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Backlight unit

A backlight module and backlight technology, applied in optics, light sources, light guides, etc., can solve the problems of low thermal conductivity of heat dissipation glue, heavy heat sink, and unfavorable light weight of backlight modules, so as to eliminate local hot spots and improve heat dissipation. effect, the effect of uniform heat distribution

Inactive Publication Date: 2013-10-02
TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Description
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AI Technical Summary

Problems solved by technology

However, due to the low thermal conductivity of the heat dissipation glue, the heat dissipation effect of the backlight module is not good, which affects the quality of the backlight module, and the heat sink 500 made of aluminum plate, copper plate, etc. is heavy, which is not conducive to the light weight of the backlight module. Quantify

Method used

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Embodiment Construction

[0033] 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.

[0034] see figure 2 , is a structural schematic diagram of the first preferred embodiment of the backlight module of the present invention. The backlight module provided by the present invention includes: a backplane 2, a light guide plate 4 installed on the backplane 2, a backlight installed in the backplane 2 The source 6 and the heat dissipation film 220 disposed on the back plate 2, the heat dissipation film 220 is made of graphene, which can be a single-layer or multi-layer structure. The heat dissipation film 220 is formed on the backplane 2 by coating.

[0035] Graphene is a new type of material, which has the advantages of high temperature resistance, small thermal expansion coefficient, good thermal conductivity and electrical condu...

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Abstract

The invention provides a backlight unit which comprises a back plate (2), a light guide plate (4) arranged in the back plate (2), a back light source (6) arranged on the back plate (2), and a heat dissipating film (220) arranged on the back plate (2). The heat dissipating film (220) is made of grapheme and is 0.01-0.05 thick. The backlight unit is effectively improved in heat dissipating effect through the arrangement of the heat dissipating film made of the grapheme on the back plate, enables heat to be evenly distributed on the whole surface in the plane direction of the heat dissipating film, and removes local heat points. Moreover, grapheme materials are light, so that the further-arranged heat dissipating film made of the grapheme can not obviously increase the weight of the backlight unit.

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a backlight module with good heat dissipation performance. Background technique [0002] Liquid Crystal Display (LCD) has many advantages such as thin body, power saving, and no radiation, and has been widely used, such as mobile phones, personal digital assistants (PDAs), digital cameras, computer screens or laptop screens Wait. [0003] Most of the liquid crystal display devices currently on the market are backlight liquid crystal display devices, which include a housing, a liquid crystal panel disposed in the housing, and a backlight module disposed in the housing. The structure of a traditional liquid crystal panel consists of a color filter substrate (Color Filter), a thin film transistor array substrate (Thin Film Transistor Array Substrate, TFT Array Substrate), and a liquid crystal layer (Liquid Crystal Layer) arranged between the two substrates. Its working princi...

Claims

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Application Information

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IPC IPC(8): G02F1/13357F21V29/00F21Y101/02F21V29/85
CPCG02B6/0085G02F1/133314G02F1/133628
Inventor 罗长诚黄冲陈伟丰张庞岭吕城龄王烨文
Owner TCL CHINA STAR OPTOELECTRONICS TECH CO LTD
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