OPTICAL DEVICE CAPABLE OF REDUCING MURA PHENOMENON

摘要

An optical device capable of reducing mura phenomenon is provided to decrease or remove mura phenomenon by using light flux transmitted through a fine structure disposed on the upper or lower surface of a region where the mura phenomenon is generated. An optical device capable of reducing mura phenomenon has a light receiving surface and a light emitting surface for transmitting the light from the light receiving surface to the light emitting surface in order to decrease luminance nonuniformity. At least one fine structure layer(2d) is settled on the light receiving or emitting surface. The fine structure has multiple separated fine patterns having patterns set to change transmittance of the optical device. In particular, the transmittance of the optical device is changed according to the density of the set patterns.