Patent ID: 9203052
Filing Date: 2015-12-01
Classification: H01L

Abstract:
1. An organic light emitting diode (OLED) device comprising: a substrate; a first thin film formed on the substrate, wherein the first thin film comprises first and second surfaces opposing each other, wherein the first surface contacts the substrate, wherein a plurality of protrusions and depressions are alternately and continuously formed on the second surface of the first thin film, wherein the protrusions and depressions have a height of about 200 to 500 Angstrom, wherein the protrusions and depressions are irregularly distributed, and wherein each of the protrusions has a substantially trapezoidal shape formed on the second surface of the first thin film, and wherein the first thin film is formed of silicon oxide, silicon nitride, polyacryl, polyimide, or a combination thereof; a second thin film formed on the protrusions and depressions of the first thin film, and wherein the second thin film is formed of silicon nitride, aluminum oxide, or a combination thereof; a first electrode formed on the second thin film; an organic light emitting member formed on the first electrode; and a second electrode formed on the organic light emitting member.