Patent ID: 9653517
Date: 2017-05-16
CPC Classifications: H01L

Claim:
1. A light-emitting device comprising: a first light-emitting element comprising: a second light-emitting element comprising: wherein the EL layer comprises a first light-emitting layer, a first layer over and in contact with the first light-emitting layer, and a second light-emitting layer over and in contact with the first layer, wherein the first electrode comprises a first reflective layer, wherein the third electrode comprises a second reflective layer and a light-transmitting layer over the second reflective layer, wherein a material of the first reflective layer is same as a material of the second reflective layer, wherein the second electrode has a light-transmitting property, wherein the EL layer is in contact with the first reflective layer, wherein a first structure of a substance of the first light-emitting layer is different from a second structure of a substance of the second light-emitting layer, and wherein the first light-emitting element and the second light-emitting element are different in a carrier-injection property.