Patent ID: 9172064
Filing Date: 2015-10-27
Classification: C23C,H01L

Abstract:
1. A deposition mask for forming an organic layer pattern of an organic light emitting diode (OLED) display, comprising: a base member having a first surface facing a substrate of the OLED display and a second surface facing opposite the first surface, and comprising a plurality of openings passing through the first surface and the second surface for forming the organic layer pattern, wherein each of the openings has a pair of first side walls facing each other in a first direction and a pair of second side walls facing each other in a second direction crossing the first direction, each side wall of the first side walls and the second side walls has an inclination surface inclined with respect to a thickness direction of the base member, and wherein an inclination angle of the inclination surface is measured with reference to the first surface of the base member, and the inclination angle of at least one of the first walls and the inclination angle of at least one of the second side walls are different from each other in each of the openings.