Patent ID: 9559332
Date: 2017-01-31
CPC Classifications: G09G,H01L,Y02E

Claim:
1. An organic electroluminescence (EL) display panel comprising: a substrate; a thin film transistor on the substrate; an overcoat layer on the thin film transistor and comprising an organic material; a first electrode on the overcoat layer; an organic light emitting layer on the first electrode; a second electrode on the organic light emitting layer; a barrier layer between the overcoat layer and the first electrode, and comprising a first region comprising only a single layer for reducing resonance between the second electrode and the barrier layer, and a second region comprising a multilayer; and a pixel defining layer on the barrier layer, wherein the second region is not located under a light emitting region in which the light emitting layer is exposed by the pixel defining layer, wherein resonance of the first region comprising only the single layer is smaller than resonance of the first region would be if the first region comprised a multilayer.