Patent ID: 8981642
Filing Date: 2015-03-17
Classification: H01L

Abstract:
1. A light-emitting device comprising: a first electrode; a first light-emitting unit over the first electrode; a charge generation layer over the first light-emitting unit; a second light-emitting unit over the charge generation layer; and a second electrode over the second light-emitting unit, wherein each of the first light-emitting unit and the second light-emitting unit includes a light-emitting layer, wherein the light-emitting layer includes a first layer and a second layer in direct contact with the first layer, wherein the first layer includes a first organic compound having an electron transporting property and a third organic compound having an electron trapping property, wherein the second layer includes a second organic compound having a hole transporting property and the third organic compound having the electron trapping property, and wherein an amount of the first organic compound contained in the first layer is larger than that of the third organic compound, and an amount of the second organic compound contained in the second layer is larger than that of the third organic compound.