Optical diffusion film and backlight module using same

A technology of optical diffusion and light diffusion layer, which is applied in the field of diffusion film, can solve the problems of high energy consumption of light sources, unfavorable environmental protection, high price, etc., and achieve the effect of simple process
CN101979914AInactive Publication Date: 2011-02-23浙江池河科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
浙江池河科技有限公司
Publication Date
2011-02-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an optical diffusion film. An optical diffusion layer is coated on one surface of a transparent base film, optical diffusion particles are uniformly distributed in the optical diffusion layer, the optical diffusion particles are transparent polymer spherical particles with diameters of 5 to 50 microns, and the particle diameter distribution of the transparent polymer spherical particles is monodisperse; and the optical diffusion film can effectively improve the optical uniformity. The invention also discloses a backlight module using the optical diffusion film. The backlight module can avoid using a high-cost prism sheet or a brightness enhancement film assembly, and can greatly improve the brightness of a liquid crystal display and save the manufacturing cost of the liquid crystal display.
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Description

technical field

[0001] The invention relates to the field of diffusion films, in particular to an optical diffusion film and a backlight module using the optical diffusion film. The optical diffusion film is a transparent film coated with a light diffusion layer on one side. The optical diffusion film is especially suitable for A backlight module of a liquid crystal display device in which a diode is a light source. Background technique

[0002] In recent years, with the rapid development of flat display technology, especially liquid crystal display technology and its wide application in mobile communication equipment display, notebook computer display, desktop computer display and large-size LCD TV, the performance requirements of the optical diffusion film in the backlight module are increasingly demanding. Improvement, mainly focused on improving brightness and lighting uniformity.

[0003] Most existing optical diffusion films used in backlight modules need to be used i...

Claims

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