Fixing structure of optical film

Abstract

The invention relates to a fixing structure for an optic diaphragm, which comprises a base board, a plurality of fixing elements on the base board, and a first diaphragm material on the base board. Wherein, the first diaphragm material has a first fixing hole and a second fixing hole that are located at the horizontal location on the upper side of the first diaphragm material and the second fixing hole is of a first angle with the horizontal direction, and the fixing elements respectively pass the first fixing hole and the second fixing hole correspondingly. By arranging fixing holes of the diaphragm materials and reserving holes for the moving position, the invention makes all diaphragm materials of different thermal expansion coefficients to move toward a preset direction, which eliminates any movement interference between diaphragm materials.

Description

technical field [0001] The invention relates to an optical film material of a backlight module, in particular to a fixing structure of an optical film. Background technique [0002] In view of the rapid development of thin-film transistor manufacturing technology, liquid crystal displays have been widely used in electronic product display devices, such as personal Consumer electronics or computer products such as digital assistants, portable TVs, mobile phones, camcorders, notebook computers, and desktop displays, but because LCDs are non-luminous display devices, they need backlight modules to produce displayed function. [0003] The backlight module includes a light guide plate, a reflection plate, a light source, an optical film material composed of several layers of thin films and an aluminum back plate. The optical film is composed of several layers of films and is arranged on the upper surface of the light guide plate. These films include a lower diffuser, a prism, a...

AI Technical Summary

Problems solved by technology

However, due to the thin thickness and insufficient strength of the membrane material, in the environment of thermal expansion and cold contraction, the longitudinal and transverse expansion of different membrane materials will make the membrane material prone to warping

[0007] In addition, when the traditional optical film fixing method uses fixed holes to fix the film, only long holes horizontal to the module are provided

If this method encounters heat expansion and contraction, the friction force will be increased due to the influence of the gravity of the membrane material, making it difficult for the pores of the membrane material to absorb the expansion in the horizontal direction, and the relative movement of the membrane material during vibration is large, which may easily lead to warping and The problem of tiny particles falling occurs, once the phenomenon of electrostatic adsorption occurs, it cannot be ruled out, resulting in a serious decline in optical quality

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