Invention Grant
US07649211B2 Organic light emitting element 有权
有机发光元件

Organic light emitting element
Abstract:
The present invention provides a light-emitting element including an electron-transporting layer and a hole-transporting layer between a first electrode and a second electrode; and a first layer and a second layer between the electron-transporting layer and the hole-transporting layer, wherein the first layer includes a first organic compound and an organic compound having a hole-transporting property, the second layer includes a second organic compound and an organic compound having an electron-transporting property, the first layer is formed in contact with the first electrode side of the second layer, the first organic compound and the second organic compound are the same compound, and a voltage is applied to the first electrode and the second electrode, so that both of the first organic compound and the second organic compound emit light.
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