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Positioning mechanism and back light module

A positioning mechanism and backlight module technology, applied in optics, light source fixation, nonlinear optics, etc., can solve problems such as diaphragm warpage

Inactive Publication Date: 2010-12-08
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of this, the purpose of the present invention is to solve the problem of warping of the diaphragm caused by the expansion and contraction caused by the change of temperature and humidity, and provide the pre-tension of the optical diaphragm through the cooperation of the elastic structure with the frame and the limiting part of the diaphragm. , in order to eliminate the warpage of the diaphragm

Method used

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  • Positioning mechanism and back light module
  • Positioning mechanism and back light module
  • Positioning mechanism and back light module

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Embodiment Construction

[0028] See image 3 and Figure 4 , image 3 A schematic diagram showing a first embodiment of the backlight module according to the present invention, Figure 4 show image 3 The partially enlarged schematic diagram of the positioning mechanism in the figure combined with the diaphragm. The backlight module of the present invention is used in a display device. The backlight module 10 includes a film 11 and a positioning mechanism 13. The film 11 is an optical film, such as a diffusion film, a prism film or a protective film, etc. Thanks to the enhancement effect of the prism sheet and the prism sheet, the backlight module 10 can produce the best light source distribution and improve the image quality. Moreover, the backlight module 10 also includes a reflective layer 21 for reflecting light into the light guide plate so that the light is emitted from the light emitting surface of the light guide plate. The edge of the optical film 11 has at least one limiting portion 12 ...

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Abstract

The invention provides a positioning mechanism and a back light module. The positioning mechanism is used for positioning a membrane, and the edge of the membrane is provided with at least one position limiting part. The positioning mechanism comprises a frame and an elastic structure, wherein the elastic structure is provided with a first part and a second part, the first part is combined and fixed with the frame, and the second part is matched with the position limiting part to provide pretension force on the membrane. The pretension force for the membrane is provided by using the elastic structure of the positioning mechanism and is used for regulating the expansion and shrinking amount of the membrane due to temperature and humidity variation so as to eliminate the problem of membrane wrapping.

Description

technical field [0001] The present invention relates to a membrane positioning mechanism and a backlight module, in particular to a membrane positioning mechanism and a backlight module capable of preventing mura defects. Background technique [0002] In recent years, the market share of liquid crystal display (TFT-LCD) has increased year by year and has almost replaced the traditional cathode ray tube (CRT) display, and is widely used in various electronic products, such as: personal digital assistant (PDA), Laptops, desktops, TVs, and more. In the liquid crystal display, it can be divided into two parts. One is the backlight module, which can provide stable and uniform light; , by controlling the rotation of the liquid crystal molecules in the liquid crystal panel to change the traveling direction of light in the liquid crystal panel, causing light and dark differences in different areas of the liquid crystal panel, so as to achieve the purpose of image display. As menti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V5/00F21V17/10G02F1/13357
Inventor 林苏逸
Owner AU OPTRONICS CORP
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