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Back light module and back plate device

A technology for backlight modules and light source devices, applied in optics, nonlinear optics, instruments, etc., can solve the problems of no longer being able to make any adjustments, reducing the quality of the backlight module, and falling in.

Active Publication Date: 2008-10-01
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method achieves some heat dissipation effects, once the opening is set, no further adjustments can be made
Furthermore, external dust and suspended particles can easily fall into the backlight module through the opening, reducing the quality of the backlight module.

Method used

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  • Back light module and back plate device
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  • Back light module and back plate device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] The first embodiment of the present invention is a backlight module with an upper filter device covering the upper opening in the upper edge region of the reflector. First, see Figure 1A , which is a schematic side-view cross-sectional view of a direct-lit backlight module 10 that has not covered the upper filter device. The backlight module 10 includes eight CCFL tubes 11 , a reflector 12 , and a backboard 13 . Referring to the direction indicated by the arrows, the reflector 12 is disposed outside the eight CCFL tubes 11 , and the back plate 13 is disposed outside the reflector 12 . The reflecting plate 12 has a first upper edge area 121 forming an upper opening 122 . In addition, the back panel 13 has a second upper edge region 131 .

[0050] Figure 1B It is an enlarged side cross-sectional schematic view of the first upper edge region 121 and the upper opening 122 formed therein in this embodiment. Figure 1C for Figure 1B A schematic top view of the section...

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PUM

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Abstract

The backlight module includes light source unit, a reflecting plate, a back plate, and an up filter unit. The reflecting plate possesses a first superior border area. Being setup on outside of the light source unit, the first superior border area is in use for reflecting light beam projected from the light source unit. The back plate possesses a second superior border area, which is located on outside of the reflecting plate. An up aperture is formed on one of the first superior border area or second superior border area. The up filter unit covers the aperture. The up filter unit can change temperature distribution of the light source unit to increase proportion of optimal operation temperature range for luminous tube. The invention helps to stabilize operation quality of the backlight module, and prolongs service life.

Description

technical field [0001] The present invention relates to a backlight module; in particular, it relates to a backlight module which has an upper filtering device and enables a large proportion of light sources to be in a preferred operating temperature range. Background technique [0002] In recent years, the production technology of liquid crystal display devices has developed rapidly, so many electronic products include liquid crystal display screens, such as personal digital assistants, notebook computers, digital cameras, digital video recorders, mobile phones, computer screens, and LCD TVs. The liquid crystal display device needs the light source of the backlight module to produce the display function, so the quality of the light source in the backlight module is closely related to the quality of the liquid crystal display device. [0003] Depending on the location of the light source in the backlight module, the backlight module can be roughly divided into two types: edg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357G02F1/1335
Inventor 庄幸蓉王以靓
Owner AU OPTRONICS CORP