Patent ID: 8878198
Filing Date: 2014-11-04
Classification: H01L

Abstract:
1. An organic light-emitting display apparatus, comprising: a substrate including a plurality of red, green, and blue sub-pixel regions; a pixel electrode in each of the plurality of the red, green, and blue sub-pixel regions on the substrate; a Distributed Bragg Reflector (DBR) layer between the substrate and the pixel electrodes; a high-refractive index layer between the substrate and the DBR layer only in the blue sub-pixel region among the red, green, and blue sub-pixel regions, the high-refractive index layer having a smaller area than an area of a corresponding pixel electrode in the blue sub-pixel region; an intermediate layer including an emissive layer on the pixel electrode; and an opposite electrode on the intermediate layer, wherein one portion of blue light emitted from the emissive layer in the blue subpixel region passes through the pixel electrode in the blue sub-pixel, the DBR layer in the blue sub-pixel, and the substrate in the blue sub-pixel, and another portion of the blue light passes through the pixel electrode in the blue sub-pixel, the DBR layer in the blue sub-pixel, the high-refractive index layer, and the substrate in the blue sub-pixel.