Integrated brightening diffusion sheet

Abstract

The invention discloses an integrated brightening diffusion sheet, which comprises a body provided with an incident face and an emergent face arranged oppositely, and is characterized in that the insiThe invention discloses an integrated brightening diffusion sheet, which comprises a body provided with an incident face and an emergent face arranged oppositely, and is characterized in that the inside of the incident face is provided with a microlens array consisting of a plurality of microlenses with low depth-to-width ratio between 0.01 and 0.1; the inside of the emergent face is provided withde of the incident face is provided with a microlens array consisting of a plurality of microlenses with low depth-to-width ratio between 0.01 and 0.1; the inside of the emergent face is provided with a microlens array consisting of a plurality of microlenses with high depth-to-width ratio more than 0.25; and filler factors of the microlens array with the low depth-to-width ratio and the microlensa microlens array consisting of a plurality of microlenses with high depth-to-width ratio more than 0.25; and filler factors of the microlens array with the low depth-to-width ratio and the microlensarray with the high depth-to-width ratio are not less than 60 percent. The microlens array with the low depth-to-width ratio and the microlens array with the high depth-to-width ratio are arranged in array with the high depth-to-width ratio are not less than 60 percent. The microlens array with the low depth-to-width ratio and the microlens array with the high depth-to-width ratio are arranged inside the incident face and the emergent face respectively; and organic combination of the two can effectively improve the gain ratio and the utility rate of luminous energy, and realize an integratedside the incident face and the emergent face respectively; and organic combination of the two can effectively improve the gain ratio and the utility rate of luminous energy, and realize an integratedoptical film with diffusion and brightening complex function so as to reduce the production cost of a backlight module and the thickness of a finished product of the backlight module, and simplify manoptical film with diffusion and brightening complex function so as to reduce the production cost of a backlight module and the thickness of a finished product of the backlight module, and simplify manufacture process.ufacture process.

Description

technical field [0001] The invention relates to an optical film, in particular to an integrated brightness-enhancing diffuser used in a liquid crystal display backlight module. Background technique [0002] The backlight module is a key part group of the liquid crystal display. Since the liquid crystal itself does not emit light, the function of the backlight module is to provide a surface light source with sufficient brightness and uniform distribution for the liquid crystal display panel. According to different light source configurations and lighting methods, there are mainly two types of backlight modules: edge-lit and direct-lit. The following takes the edge-lit backlight module as an example for a brief description: [0003] see figure 1 As shown, a common edge-lit backlight module 1 includes a cold cathode light source 10, a light guide plate 11, an optical film set 12 and a reflector 13, wherein the optical film set 12 consists of a diffuser 121, a first A prism s...

AI Technical Summary

Problems solved by technology

However, this method will inevitably have the absorption of light by diffuse ions, resulting in low utilization of light energy.

At the same time, the prism sheet in the optical film is monopolized by 3M patent, and the price is relatively expensive

All of the above have led to the high cost of backlight modules

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