Patent ID: 8679618
Filing Date: 2014-03-25
Classification: B32B,C09K,G02B,Y10T

Abstract:
1. An optical film, comprising: a multi-layer sheet including: a protection sheet on at least one side of the multi-layer sheet, a thickness of the protection sheet substantially equal to a thickness of the multi-layer sheet; an acryl-based adhesive member between the multi-layer sheet and the protection sheet, the adhesive member comprising a refraction index smaller than a refraction index of the protection sheet; and a diffusion member on the protection sheet, wherein the diffusion member includes a transparent polymer layer on and directly contacting the protection sheet and a plurality of inorganic particles in the transparent polymer layer, wherein the transparent polymer layer includes a plurality of protrusions corresponding to the inorganic particles, wherein the protection sheet comprises the co-polymer material wherein the thicknesses of the polymer layers gradually increase from the outer side to the center of the polymer layers, wherein the thicknesses of the copolymer layers gradually increase from the outer side to the center of the copolymer layers, and wherein the refractive index formed along the X-axis and a refractive index formed along the Y-axis are equal to each other in the protection sheet.