OPTICAL FILM FOR BACKLIGHT UNIT AND METHOD FOR MANUFACTURING THE SAME

摘要

The present invention relates to an optical film for a backlight unit and a method for manufactuing the same. The optical film of the present invention comprises a light diffusion layer in which light diffusing particles are distributed, a first refraction layer which has a relatively low index of refraction and is formed integrally on a top surface of the light diffusion layer, and a second refracion layer which has an index of refraction relatively higher than that of the first refraction layer and is formed integrally on a top surface of the first refraction layer and formed with a refraction pattern on a surface thereof. According to the present invention, the loss of light can be prevented, the adsorption of foreign substances in and the resultant scratch generation on the films can be avoided during the assembly process of the backlight unit, the productivity improvement and manufacturing cost reduction can be achieved, and the brightness of the backlight unit can be adjusted.