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Backlight module group

A backlight module and lamp technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of slow heat dissipation and affect the working performance of lamp 14, achieve high heat conduction speed, and improve the effect of internal heat dissipation.

Inactive Publication Date: 2008-09-17
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, since the heat generated by the lamp tube 14 is only conducted to the cooling plate 59 through the natural convection of the air, although it can maintain the operation of the backlight module 50 in a uniform temperature state to a certain extent, due to relying on air The heat conduction of natural convection is only 11.3 to 55W / m 2 .K, it still has the problem of slow heat dissipation in terms of heat dissipation. When the backlight module 50 works for too long, the internal temperature will still rise slowly, thereby affecting the working performance of the lamp tube 14.

Method used

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no. 1 approach

[0014] Please refer to Fig. 2 and Fig. 3, which are the first embodiment of the backlight module of the present invention. The backlight module 30 includes three lamp tubes 35, a diffusion plate 31, a brightness enhancement sheet 32, a diffusion sheet 33, a reflector 34 and a Heat pipe cooling device 36. The diffuser plate 31 , the brightness enhancement sheet 32 ​​and the diffuser sheet 33 are sequentially arranged above the lamp tube 35 . The reflecting plate 34 is arranged under the lamp tube 35 for reflecting the light generated by the lamp tube 35 to the diffuser plate 31. The heat pipe cooling device 36 is arranged between the diffuser plate 31 and the lamp tube 35.

[0015] The lamp tube 35 is a cold cathode fluorescent lamp tube, and the position corresponding to the diffuser plate 31 and the lamp tube 35 is provided with a plurality of scattering network points (not shown in the figure), and the scattering network points can further diffuse the light emitted by the la...

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Abstract

This invention discloses a backlighted module set including a lamp, a diffusion plate, a reflection plate and a heat tube radiator, among which, the diffusion plate is set above the lamp, said reflection plate is set under said lamp and the radiation device is set between them.

Description

【Technical field】 [0001] The invention relates to a backlight module, especially a backlight module with a heat dissipation device. 【Background technique】 [0002] Due to the advantages of light weight, thin thickness, and low power consumption, liquid crystal displays are widely used in information equipment such as notebook computers, mobile phones, and personal digital assistants. Because liquid crystal itself does not have light-emitting characteristics, it is necessary to provide a backlight module for it display function. [0003] As we all know, backlight modules can be divided into side-light and direct-light designs. Generally speaking, for small and medium-sized liquid crystal displays, side-light backlight modules have the advantages of light weight, thinness, and low power consumption. However, as With the development of science and technology, the demand for large-size liquid crystal displays is increasing day by day, and the performance of large-size edge-lit ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1335
Inventor 黄文正简士哲黄全德
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD