Abstract: An optical diffusing film and a LCD backlight using the same are provided. The optical diffusing film comprises a transparent substrate made of an optically transparent material with a refractive index of 1.4 to 1.8, and a diffusing coating with a refractive index of 1.4 to 1.7 disposed on an upper surface of the transparent substrate, wherein diffusing particles with a refractive index of 1.4 to 1.7 are distributed in the diffusing coating, and the diffusing particles are in close contact with each other, the diffusing coating has a thickness of ½ to ? of the largest particle size of the diffusing particles, and the coating density of the diffusing particles is 103 to 106 particles per square millimeter.
Type:
Grant
Filed:
November 10, 2011
Date of Patent:
August 18, 2015
Assignees:
CHINA LUCKY FILM GROUP CORPORATION BAODING LUCKY FILM CO., LTD., HEFEI LUCKY SCIENCE & TECHNOLOGY INDUSTRY COMPANY LTD.
Inventors:
Baoliang Zhao, Yuhang Li, Xuliang Wang, Xinli Huo