Invention Grant
US09401492B2 Light-emitting element, light-emitting device, display device, and electronic apparatus 有权
发光元件,发光装置,显示装置和电子设备

Light-emitting element, light-emitting device, display device, and electronic apparatus
Abstract:
Disclosed herein is a light-emitting element, including: a cathode; an anode; and a light-emitting unit, in which the light-emitting unit includes a first light-emitting layer, a second light-emitting layer, and a third light-emitting layer, which are laminated from the anode side to the cathode side, in which each of the first, second, and third light-emitting layers is configured to contain a luminescent material, a host material, and an assist dopant material, and in which, when the contents of the assist dopant materials contained in the first, second, and third light-emitting layers are respectively expressed by CAssist(EML1), CAssist(EML2) and CAssist(EML3), the following Relational Expression (A) is satisfied: CAssist(EML1)≧CAssist(EML2)>CAssist(EML3)≧0  (A).
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