Patent ID: 8786183

Claim:
A light-emitting element comprising: a first electrode; a second electrode; a charge generating layer between the first electrode and the second electrode; a first light-emitting unit between the first electrode and the charge generating layer; a second light-emitting unit between the second electrode and the charge generating layer, wherein an emission color of the first light-emitting unit is different from an emission color of the second light-emitting unit, wherein the first light-emitting unit comprising: a light-emitting layer comprising a first substance having a light-emitting property; a first layer between the charge generating layer and the light-emitting layer, the first layer comprising a second substance having a carrier transporting property and a third substance for reducing the carrier transporting property of the second substance; and a second layer between the charge generating layer and the first layer, the second layer comprising a fourth substance having a carrier transporting property, wherein the second substance is different from the fourth substance.