Organic light-emitting display apparatus and method of manufacturing the same

Abstract

An organic light-emitting display apparatus including: a substrate; a plurality of pixels that are formed on the substrate and each have a light emission area from which visible rays are emitted and a transmission area through which external light is transmitted; a pixel circuit portion disposed in each light emission area of the plurality of pixels; a first electrode that is disposed in each light emission area and is electrically connected to the pixel circuit portion; an intermediate layer that is formed on the first electrode and includes an organic emissive layer; a second electrode formed on the intermediate layer; and a capping layer that is disposed on the second electrode and includes a first capping layer corresponding to the light emission area and a second capping layer corresponding to the transmission area. Accordingly, electrical characteristics and image quality of the organic light-emitting display apparatus may be improved.

What is claimed is: 
     
         1 . An organic light-emitting display apparatus comprising:
 a substrate;   a plurality of pixels on the substrate and each have a light emission area from which visible rays are emitted and a transmission area through which external light is transmitted;   a pixel circuit portion in each light emission area of the plurality of pixels;   a first electrode in each light emission area and is electrically connected to the pixel circuit portion;   an intermediate layer on the first electrode and comprises an organic emissive layer;   a second electrode on the intermediate layer; and   a capping layer on the second electrode and comprises a first capping layer corresponding to the light emission area and a second capping layer corresponding to the transmission area.   
     
     
         2 . The organic light-emitting display apparatus of  claim 1 , wherein the capping layer is light-transmissive. 
     
     
         3 . The organic light-emitting display apparatus of  claim 1 , wherein the first capping layer and the second capping layer have different thicknesses. 
     
     
         4 . The organic light-emitting display apparatus of  claim 1 , wherein the second capping layer is thinner than the first capping layer. 
     
     
         5 . The organic light-emitting display apparatus of  claim 1 , wherein the second capping layer comprises a plurality of sub-capping layers. 
     
     
         6 . The organic light-emitting display apparatus of  claim 1 , wherein the first capping layer and the second capping layer are separated from each other in at least a first direction and a second direction perpendicular to the first direction. 
     
     
         7 . The organic light-emitting display apparatus of  claim 1 , wherein the first capping layer and the second capping layer comprise the same material. 
     
     
         8 . The organic light-emitting display apparatus of  claim 1 , wherein the first capping layer and the second capping layer comprise different materials. 
     
     
         9 . The organic light-emitting display apparatus of  claim 1 , wherein the capping layer comprises 8-quinolinolato lithium (Liq), N,N-diphenyl-N,N-bis(9-phenyl-9H-carbazol-3-yl)biphenyl-4,4′-diamine, N(diphenyl-4-yl)9,9-dimethyl-N-(4(9-phenyl-9H-carbazol-3-yl)phenyl)-9H-fluorene-2-amine, or 2-(4-(9,10-di(naphthalene-2-yl)anthracene-2-yl)phenyl)-1-phenyl-1H-benzo-[D]imidazole. 
     
     
         10 . The organic light-emitting display apparatus of  claim 1 , wherein the second electrode is light-transmissive. 
     
     
         11 . The organic light-emitting display apparatus of  claim 1 , wherein:
 the capping layer is on the second electrode in a first area and has a first edge, and   the organic light-emitting display apparatus further comprises a third electrode on the second electrode in a second area other than the first area, the third electrode having a second edge, and   a lateral surface of the first edge of the capping layer and a lateral surface of the second edge of the third electrode contact each other.   
     
     
         12 . The organic light-emitting display apparatus of  claim 11 , wherein the third electrode is thicker than the second electrode. 
     
     
         13 . The organic light-emitting display apparatus of  claim 11 , wherein an adhesive force between the third electrode and the capping layer is weaker than an adhesive force between the third electrode and the second electrode. 
     
     
         14 . The organic light-emitting display apparatus of  claim 11 , wherein the third electrode comprises magnesium (Mg). 
     
     
         15 . The organic light-emitting display apparatus of  claim 11 , wherein all edges of the capping layer and an edge of the third electrode contact each other. 
     
     
         16 . A method of manufacturing an organic light-emitting display apparatus comprising a plurality of pixels each comprising a light emission area from which visible rays are emitted and a transmission area through which external light is transmitted, the method comprising:
 forming a plurality of pixel circuit portions on a substrate to respectively correspond to the plurality of pixels;   forming a first electrode in a light emission area of each of the plurality of pixels and electrically connected to a corresponding one of the pixel circuit portions;   forming an intermediate layer, comprising an organic emissive layer, on the first electrode;   forming a second electrode on the intermediate layer; and   forming a capping layer on the second electrode, wherein the capping layer comprises a first capping layer corresponding to the light emission area and a second capping layer corresponding to the transmission area.   
     
     
         17 . The method of  claim 16 , wherein:
 the first capping layer and the second capping layer are formed separately.   
     
     
         18 . The method of  claim 16 , wherein the first capping layer and the second capping layer are formed using a mask. 
     
     
         19 . The method of  claim 16 , wherein:
 the capping layer is formed in a first area on the second electrode and has a first edge,   the method further comprises forming a third electrode in a second area other than the first area on the second electrode and has a second edge, and   a lateral surface of the first edge of the capping layer and a lateral surface of the second edge of the third electrode are formed to contact each other.   
     
     
         20 . The method of  claim 19 , wherein the forming of the third electrode comprises patterning the third electrode by using a pattern of the capping layer.