Low-thermal-shrinkage and self-adhesive optical reflecting film

Abstract

;A low-heat-shrinkage and self-adhesion type optical reflecting film comprises a reflecting film base layer, the two sides of the reflecting film base layer are coated with resin layers, and the resinlayers are filled with temperature adjusting particles of a core-shell structure the lower resin layer is coated with a glue layer containing an antistatic agent, and a stripping film is bonded on the glue layer; the reflecting film base layer comprises main body resin, organic particles incompatible with the main body resin and inorganic particles incompatible with the main body resin, after thecore layer is stretched, the organic particles are separated from the main body resin, the inorganic particles are separated from the main body resin, cavities are formed, and the density differencevalue between the organic particles and the main body resin is smaller than 0.25 g / cm <3>. The two sides of the reflecting film are coated with the resin layers containing the temperature adjusting micro-particles, the film layer is kept at the stable and appropriate working temperature by absorbing / releasing heat, and shrinkage deformation of the reflecting film due to environment temperature changes is prevented.

Description

technical field [0001] The invention relates to an optical reflection film. Background technique [0002] The liquid crystal display itself does not emit light, and the display function benefits from the light emitted by the modulated backlight source. The performance index of the display depends on the performance of the backlight source, so the performance of the backlight module light source directly affects the quality of liquid crystal display. The reflective film is one of the most important optical films in the backlight module of the liquid crystal display. In the liquid crystal display, the reflective film is at the bottom of the backlight module of the light guide plate, reflecting the light leaked from the light source back to the light guide plate, so that it can be concentrated Frontal projection prevents light from leaking out, so as to increase the efficiency of light use. However, the heat generated by the backlight module working for a long time will cause ...

AI Technical Summary

Problems solved by technology

However, the heat generated by the backlight module working for a long time will cause thermal shrinkage and deformation of the reflective film. At the same time, the reflective film in the backlight module is generally fixed by bonding light-shielding glue on the edges of both sides. The space above the reflective film is insufficient, resulting in reflection. The membrane is prone to adverse phenomena such as membrane arches, wrinkles, and delamination, which seriously affect the display effect

In the traditional backlight module structure, the reliability of the optical film is not considered in the design of the structure

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