Patent ID: 9219250
Filing Date: 2015-12-22
Classification: G02B,H01L,Y10T

Abstract:
1. An optical film comprising: a high refractive index pattern layer comprising a material having a refractive index greater than 1 and having a first surface and a second surface, which face each other, wherein a plurality of grooves is defined in the first surface of the high refractive index pattern; and a low refractive index pattern layer comprising a plurality of protruding patterns disposed in the plurality of grooves of the high refractive index pattern, having a refractive index less than the refractive index of the high refractive index pattern layer, and comprising a plurality of layers having different refractive indices from each other, wherein each of the different refractive indices are less than the refractive index of the high refractive index pattern layer.