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Back light unit

A backlight module and light guide plate technology, applied in optics, nonlinear optics, instruments, etc., can solve problems such as deformation, fracture, and insufficient space for thermal expansion of optical films

Inactive Publication Date: 2006-09-27
AU OPTRONICS CORP
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

In this way, the optical film 11 will be deformed due to insufficient space for thermal expansion, and the quality of its optical image will be deteriorated.
In addition, because the light guide plate 10 is too close to the lamp tubes (not shown) in the lamp tube group 12, the light guide plate 10 will be deformed due to the heat energy generated by the lamp tubes, and it is very likely that the lamp tubes will be damaged during the impact test. Broken due to being hit by the light guide plate

Method used

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Embodiment Construction

[0053] Please refer to image 3 , which is a schematic diagram of a preferred embodiment of the backlight module in the present invention. exist image 3 Among them, the backlight module 3 includes a lamp tube group 33 , a light guide plate 31 and a positioning body 32 . Wherein, the lamp set 33 is composed of a lampshade 301 and a first lamp 302 . An optical film (not shown) may be disposed on the light guide plate 31 . The positioning body 32 has a base 321 , a first flange 322 and a second flange 323 . The base 321 can be arranged on the reflective surface of the inner wall of the lampshade 301, and a first flange 322 and a second flange 323 can be extended upright from the base 321 to withstand the light guide plate 31, so that when it is embedded in the lamp group , a preset depth d can be maintained between the light guide plate 31 and the first lamp tube 302 ; and a depth e at which the light guide plate 31 is embedded in the entire lamp tube group 33 can also be ma...

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Abstract

This invention relates to a back light unit, which is fit to a plane display panel, comprises at least a lamp tube groupware with lamp shade, a guide-light board with an optical membrane and one side fit to embed into the groupware, and a fixing body arranged on the inner wall of lamp shade to prop the guide-light board side and lead the board embedding a given depth into the groupware and keeping a given gap.

Description

technical field [0001] The invention relates to a backlight module, in particular to a backlight module which utilizes a positioning body in its lamp tube group. [0002] technology field. Background technique [0003] In the existing technology, even on the same backlight module, different backlight module factories have different assembly processes. It is also because of the difference in the assembly process and the assembly method of the assemblers that there are usually different errors in the assembly. Further investigation into the result shows that the error in assembly is more likely to affect the thermal expansion space of the optical film, thereby resulting in poor optical quality. [0004] Therefore, if the backlight module can be used in different backlight module factories and different assembly processes, it can still keep a preset distance between the lamp tube group and the light guide plate in its position, and then the optical film can be provided. spac...

Claims

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Application Information

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IPC IPC(8): G02F1/13357G02F1/133G02F1/1335
Inventor 陈群元侯皓元许詠雯谢诗蔚
Owner AU OPTRONICS CORP
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