Optical reflection film

Abstract

The invention provides optical reflection film. The optical reflection film comprises a core layer and two surface layers for protecting the core layer, wherein the core layer comprises matrix resin,organic particles incompatible with the matrix resin and inorganic particles incompatible with the matrix resin, and after the core layer is stretched, the organic particles and the matrix resin are separated and the inorganic particles and the matrix resin are separated to form holes; the thickness of the core layer accounts for 50-90% of the total thickness of the optical reflection film, and density difference values between the organic particles and the matrix resin are less than 0.25 g / cm<3>. The optical reflection film has the advantages that the density difference values between the organic particles and the matrix resin are less than 0.25 g / cm<3>, at the moment, the organic particles are not easily gathered together in the matrix resin, thereby being capable of using more organic particles, and increasing the void ratio of the reflection film to some extent.

Description

technical field [0001] The invention relates to an optical reflection film. Background technique [0002] With the advent of the digital age, liquid crystal display technology (LCD) has become one of the most widely used display technologies at present, and will occupy the mainstream technology position in the field of flat panel display for a period of time. A liquid crystal display is generally composed of a liquid crystal panel and a backlight module. The backlight module mainly includes components such as a light source, a reflective film, a light guide plate, a diffusion film, a brightness enhancement film, and an outer frame. The liquid crystal molecule itself does not emit light, and the image or character it displays is the result of its modulation of the light emitted by the backlight. The backlight is an important component that determines the performance of the liquid crystal display. The brightness of the backlight directly determines the display brightness of th...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the current reflective film adopts the method of increasing the porosity to increase the reflective effect. The common method is to increase the proportion of incompatible materials to achieve the above purpose, but the proportion of incompatible materials is too large, so it is difficult to obtain an effective effect by this method at present. carry out