Organic light-emitting diode display substrate, organic light-emitting diode display device, and method of manufacturing organic light-emitting diode display substrate

摘要

The present application discloses a method of manufacturing an organic light emitting diode display substrate having a sub-pixel region and a sub-pixel region. The method includes forming a pixel defining layer on the base substrate, the pixel defining layer being formed in a sub-pixel region and defining a sub-pixel region of the organic light emitting diode display substrate; Forming an insulating dielectric layer on the side of the pixel defining layer away from the base substrate, the insulating dielectric layer being formed to define a first opening region larger than the subpixel region; And forming an organic light emitting layer in each sub pixel region using a mask plate disposed on the insulating dielectric layer, following the step of forming the insulating dielectric layer.