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Direct type backlight module

A backlight module, direct type technology, used in optics, nonlinear optics, instruments, etc., can solve the problems of low light uniformity and complex mechanism design, and achieve the effect of simple mechanism design and improved light uniformity.

Inactive Publication Date: 2008-04-23
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the defects of low light uniformity and complicated mechanism design of the prior art backlight module, the present invention provides a direct type backlight module with high light uniformity and simple mechanism design

Method used

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Embodiment Construction

[0016] Referring to FIG. 3 , the direct type backlight module 100 of the present invention includes a plurality of lamp tubes 101 , a lamp cover 102 partially surrounding the lamp tubes 101 , a diffuser plate 103 and a reflective element 104 . The lamp tube 101 and the lamp cover 102 are located in the area defined by the reflective element 104 and the diffuser plate 103, and the lamp cover 102 is located between the lamp tube 101 and the diffuser plate 103. The light emitted by the lamp tube 101 is transmitted to the diffuser plate after being acted by the lamp cover 102. 103 and converted into a uniform plane light.

[0017] The lamp tube 101 may be a cold cathode fluorescent lamp, which has the advantages of higher brightness, higher luminous efficiency, smaller tube diameter and longer life than other light source technologies. The tube diameter of the lamp tube 101 is about 10mm, the power is about 8-29w, the life is as long as 10000hrs, and the luminous flux is about 35-...

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Abstract

This invention discloses a straight down aphototropism mode set, which comprises at least one light tube, light cover surrounding the light tube part, diffusing plate and reflection element. The light tube and light cover are located in the defined area of reflection element and diffusing plate and the light cover is located between the light tube and the diffusing plate. The light beam sent from the tube is transmitted into the diffusing plate and is translated into the even plane light after the light cover reaction. This invention of down straight aphototropism mode set has high evenness of the out light.

Description

【Technical field】 [0001] The invention relates to a backlight module, in particular to a direct-type backlight module using a lamp tube. 【Background technique】 [0002] Because liquid crystal displays have the advantages of lightness, thinness, and low power consumption, they are widely used in modern information equipment such as notebook computers, mobile phones, and personal digital assistants. Because the liquid crystal itself does not have light-emitting properties, a backlight module needs to be provided for it to realize the display function. The backlight module can be divided into two types according to the structure: edge type backlight module and direct type backlight module. Among them, the direct type backlight module is mainly used in fields such as LCD monitors or LCD TVs. [0003] As we all know, the direct type backlight module needs to have high light output brightness, and its light output uniformity must meet the predetermined requirements, so as to imp...

Claims

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Application Information

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IPC IPC(8): G02F1/13357G02F1/1335
Inventor 陈弥坚
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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