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Backlight module

A backlight module and flat panel technology, which is applied in optics, nonlinear optics, instruments, etc., can solve the problems of uneven thermal expansion, limited effect, and glass deformation of flat light panel glass, and achieve enhanced display effects, extended life, and improved stability. Effect

Inactive Publication Date: 2008-02-27
CHUNGHWA PICTURE TUBES LTD
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

The original planar lamp panel heat dissipation design is to design a natural convection cooling channel behind the planar lamp panel, and provide a plurality of ventilation holes for gas to enter and exit. The temperature of the tuyere is low, while the temperature of the air outlet is high, which will make the thermal expansion of the glass of the flat lamp panel uneven, and finally cause the glass to be seriously deformed or even broken

Method used

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Embodiment Construction

[0042] The present invention is described in detail as follows by enumerating some embodiments. Firstly, the present invention takes a flat lamp panel backlight module as an example to illustrate the heat dissipation structure provided by the present invention. FIG. 2A shows a schematic cross-sectional view of a liquid crystal display device 20 according to an embodiment of the present invention. The liquid crystal display device 20 includes a liquid crystal display panel 22 and a backlight module 30 , wherein the backlight module 30 can be, for example, a direct-lit backlight module. The backlight module 30 includes a flat light panel 32 , a flat panel 34 , and a channel 36 between the flat light panel 32 and the flat panel 34 . The planar lamp panel 32 includes an upper panel 321 , a lower panel 322 , and electrodes 323 , wherein the upper panel 321 and the lower panel 322 can be made of glass, for example.

[0043] The backlight module 30 further includes a diffuser 40 lo...

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Abstract

This invention provides a kind of negative phototropism module, it includes a plane lamp board, a flat, and a passage between the plane lamp board and the flat. The flat has complex number hole and at least one hatch, the said hole are set in the circum of the flat, the hatch is in the middle of the flat, and it sets a fan in the hatch, the distance between the hole and the hatch are almost the same. This invention can reduce the temperature of the lamp board, to make the lamp board temperature distribute equally, so it can increase the stability of the lamp board, enhance the display effect, prolong the use life of the lamp board.

Description

technical field [0001] The invention relates to a backlight module and a liquid crystal display device, and particularly relates to a backlight module and a liquid crystal display device with a heat dissipation structure. Background technique [0002] Liquid crystal display (LCD) has the advantages of power saving, high image quality, good space utilization efficiency, and low radiation compared with cathode ray tube display (CRT), so in recent years, liquid crystal display Displays have been widely used in many electronic products with growth potential, such as monitors, notebook computers, digital cameras, and projectors. [0003] Since the liquid crystal display is non-self-illuminating, the backlight module is a key component of the liquid crystal display, and its main function is to provide a bright and evenly distributed light source so that the liquid crystal display can display images normally. [0004] FIG. 1 is a schematic cross-sectional view of a known liquid cr...

Claims

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Application Information

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IPC IPC(8): G02F1/13357G02F1/1335
Inventor 余祥文王允适
Owner CHUNGHWA PICTURE TUBES LTD
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