Patent ID: 8436346
Filing Date: 2013-05-07
Classification: H01L

Abstract:
1. A light-emitting element comprising: a substrate; a thin film transistor formed over the substrate; a first light-emitting element; and a second light-emitting element, wherein the first light-emitting element and the second light-emitting element are stacked in series over the substrate; wherein the first light-emitting element comprises a first anode, a first cathode, and a first light-emitting layer including a light-emitting organic compound, which is interposed between the first anode and the first cathode; wherein the second light-emitting element comprises a second anode, a second cathode, and a second light-emitting layer and a third light-emitting layer which each include a light-emitting organic compound, which are interposed between the second anode and the second cathode; wherein the first cathode is in contact with the second anode; wherein the first light-emitting element exhibits a first light emission spectrum having a peak in a red wavelength range, and the second light-emitting element exhibits a second light emission spectrum having a peak in a blue wavelength range and a peak in a green wavelength range, and wherein the second light-emitting layer comprises: a host material comprising an electron transporting anthracene derivative.