Patent ID: 8998446
Filing Date: 2015-04-07
Classification: G02B,H01L

Abstract:
1. An optical film in an organic light emitting display, wherein the optical film is formed on a substrate of the organic light emitting display, wherein the substrate is configured to transmit light, emitted from an organic light emission unit of the display, toward the optical film, wherein the optical film is configured to absorb ambient light via a first portion, and wherein the optical film is further configured to transmit light emitted from the organic light emission unit to the environment via a second portion, and wherein the optical film further comprises: a light absorbing member formed in the first portion and configured to absorb ambient light; and a plurality of fine structures formed in the second portion and configured to transmit light emitted from the organic light emission unit to the environment, wherein the light absorbing member is interposed between and contacts the fine structures, wherein each of the fine structures comprises: a first penetration surface formed on a first surface of the optical film, which faces the environment; a second penetration surface formed on a second surface facing the substrate; a boundary unit which connects the first penetration surface and the second penetration surface and forms the side of the fine structure; and a reflection unit formed on the boundary unit, wherein the area of the first penetration surface is smaller than the area of the second penetration surface, and wherein the first and second penetration surfaces are substantial parallel to each other.