Backlight module

Abstract

The invention relates to a backlight module for a liquid crystal display device, a positioning frame used thereby and elastic positioning elements used by the positioning frame. The mounting of one or more of the elastic positioning elements on one sidewall or two sidewalls of the positioning frame of the backlight module for carrying out the aligning positioning of a light guide plate and the normal and facial line positioning of an optical film solves the problems of the aligning positioning of the light guide plate and the fixing of the optical film, particularly the problem of the aligning positioning of the light guide plate. On the premise of perfect positioning function, the elastic positioning element adopted by the backlight module realizes a simple structure, very convenient mounting and convenient rework and detachment of the backlight module.

Description

technical field [0001] The present invention relates to a backlight module, a positioning frame used therefor, and a positioning element for positioning a light guide plate and a film; specifically, the present invention relates to a backlight module used for a liquid crystal display device and a positioning frame used therefor. Frame and elastic positioning elements applied to the positioning frame. Background technique [0002] In the field of flat panel display, the traditional CRT (Cathode Ray Tube, cathode ray tube) display has been gradually replaced by the more and more advanced LCD (Liquid Crystal Display) due to its high radiation, high power consumption, large volume, low resolution and high quality. , liquid crystal display) display replaced. Since its inception, LCD monitors have been known for their thinness, fashion, environmental protection and energy saving, high resolution, and long service life. However, because LCD monitors are in the initial stage of pr...

AI Technical Summary

Problems solved by technology

Since the elastic barb 42a is provided on the elastic card 4a, once the elastic card 4a is engaged, it is difficult to disassemble it from the positioning frame 3, and it is very difficult to disassemble it again

[0006] Image 6 Shown is a schematic diagram of another fixing method of the optical film (FILM) of the existing NB model. The optical film (FILM) 2 in the figure adopts 5 pairs of optical film (FILM) 2 fixed on the positioning frame 3 The positioning of the normal direction is implemented to limit the displacement on the normal line of the optical film (FILM) 2. This method also has the problem of difficult disassembly

[0007] In addition, the positioning member on the existing positioning frame 3 does not perform positioning on the LGP1, so when the operator pastes the LGP1, he needs to perform centering and positioning by visual inspection. The shadow of the invalid light-emitting area shifts, and at the same time, it is easy to produce residual glue during the process of moving LGP1

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