Optical film compound

Abstract

The invention provides an optical film compound, comprising a brightening element and a diffused element, wherein the diffused element comprises a substrate at least one side of which comprises an optical diffusing layer; and the diffused element has no lower than 98% of haze measured according to a JIS K7136 standard method.

Description

technical field [0001] The invention relates to an optical film compound, in particular to an optical film compound applied to a direct-type backlight module, especially a direct-type LED backlight module. Background technique [0002] Liquid Crystal Display (LCD) has gradually replaced the original Cathode-Ray Tube (CRT) display due to its advantages such as high image quality, low radiation, low power consumption, and better space utilization. become the mainstream of the market. The main structure of the liquid crystal display includes two parts: the liquid crystal panel and the backlight module. Since the liquid crystal panel itself does not emit light, the backlight module (Back light module) is required to provide the light source required for the liquid crystal display to display images, so that it can display images normally. [0003] One of the commonly used light sources of the backlight module is a cold cathode fluorescent lamp (Cold Cathode Fluorescent Lamp, CCF...

AI Technical Summary

Problems solved by technology

In addition, the direct-lit LED backlight module uses local dimming technology, which can save more power and meet environmental protection requirements. However, in order to solve the phenomenon of fireflies, it is often necessary to increase the distance between the light source and other diaphragms to provide sufficient light mixing distance. But it will increase the thickness of the backlight module, which is not conducive to the current demand for light and thin displays

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