Patent ID: 9012041
Filing Date: 2015-04-21
Classification: H01L,Y10S

Abstract:
1. A light-emitting element comprising: an electroluminescence layer between an anode and a cathode; a first layer between the cathode and the electroluminescence layer, the first layer including a substance having a hole-transport property; a second layer between the cathode and the electroluminescence layer, the second layer consisting essentially of a phthalocyanine-based material represented by any one of the following structural formulae: a third layer between the cathode and the electroluminescence layer, the third layer including one of an alkali metal, an alkaline-earth metal, a rare-earth metal, an alkali metal compound, an alkaline-earth metal compound, and a rare-earth metal compound, wherein the first layer is provided between the cathode and the second layer and in contact with the cathode and with the second layer, wherein the second layer is provided between the first layer and the third layer and in contact with the first layer and with the third layer, and wherein the third layer is provided between the second layer and the electroluminescence layer and in contact with the second layer and with the electroluminescence layer.