Optical thin sheet

Abstract

The invention relates to an optical thin plate, comprising a substrate whose at least one side has a light diffusion layer. When detected by goniophotometer, if the light is projected at 0-90 deg.C, the detected angle of highest outgoing light intensity is plus / minus 10 deg, especially applied to flat displays.

Description

technical field [0001] The invention relates to an optical thin sheet used in a backlight assembly assembled in a liquid crystal display device, which has high uniformity optical properties, distributes light evenly, and achieves good optical effects. Background technique [0002] The liquid crystal panel itself does not emit light, so the backlight as a source of brightness is an important component of the LCD display function, and is very important for improving the brightness of the liquid crystal display. [0003] In addition, LCD products have been expanded from notebook computers or LCD screens to LCD TVs. The key points to consider are sufficient display brightness, wide viewing angle, sharp image contrast and standard service life. In order to meet the above requirements, "Direct Type Backlight Module" (Direct Type Backlight) has become the mainstream technology for large LCD TVs. Figure 1 is a schematic diagram of a conventional Direct Type Backlight Module. As sho...

AI Technical Summary

Problems solved by technology

Liquid crystal flat panel displays are generally required to be light, thin and short, but increasing the thickness of the diffusion plate will increase the weight and the material itself will cause unavoidable light absorption, and increasing the distance between the light source and the diffusion plate will also cause part of the light to be wasted. The light source cannot be used effectively

In addition, the manufacturing process of the diffuser plate is time-consuming, and the required production cost is relatively high, resulting in a major disadvantage in the module design

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