Patent ID: 9099681
Filing Date: 2015-08-04
Classification: H01L

Abstract:
1. A display device, comprising: a first electrode, wherein the first electrode is a laminated structure that includes at least a first transmissive layer and a second transmissive layer, and wherein a refractive index of the second transmissive layer is higher than a refractive index of the first transmissive layer; a second electrode; one or more organic layers with a light-emitting layer between the first electrode and the second electrode: a third electrode provided on a side of the second electrode opposite to the light-emitting layer, wherein the third electrode is a laminated structure that includes at least a first transmissive layer and a second transmissive layer, and wherein a refractive index of the second transmissive layer is higher than a refractive index of the first transmissive layer; and an efficiency improving layer improving an efficiency of light extraction from the light-emitting layer, wherein the efficiency improving layer is provided between the second and third electrodes, wherein the efficiency improving layer is a laminated structure that includes a plurality of layers, and wherein a first one of the plurality of layers has a lower refractive index than a second one of the plurality of layers.