Patent ID: 9640782
Date: 2017-05-02
CPC Classifications: H01L

Claim:
1. A method of manufacturing an organic light-emitting display apparatus, the method comprising: providing a substrate comprising a first major surface and a second major surface facing away from the first major surface; forming an optical layer over the first major surface of the substrate, wherein optical layer comprises a first refractive index layer having a first refractive index and a second refractive index layer having a second refractive index greater than the first refractive index; forming a pixel electrode over the optical layer, such that the pixel electrode overlaps the first refractive index layer when viewed in a direction perpendicular to the first major surface; forming a pixel-defining wall over the optical layer and next to the pixel electrode, such that the pixel-defining wall overlaps the second refractive index layer when viewed in the direction; forming an organic light emitting layer over the pixel electrode and next to the pixel-defining wall; and forming a common electrode over the organic light emitting layer and the pixel-defining wall, such that at least part of the common electrode overlaps the pixel-defining wall when viewed in the direction and further such that the at least part of light beams emitted from the organic light emitting layer and traveled via the pixel-defining wall are reflected, at the common electrode, and directed to the second refractive index layer under the pixel-defining wall, wherein the second refractive index layer contacts the first refractive index layer to form an interface therebetween extending in the direction, such that at least part of light beams reflected on the common electrode and directed to the second refractive index layer are totally reflected on the interface and directed toward the substrate without entering the first refractive index layer.