Invention Grant
US09028980B2 Organic electroluminescent element, composition for organic electroluminescent element, and organic electroluminescent device 有权
有机电致发光元件,有机电致发光元件用组合物和有机电致发光元件

Organic electroluminescent element, composition for organic electroluminescent element, and organic electroluminescent device
Abstract:
The present invention relates to an organic electroluminescent element which comprises two or more hole injection/transport layers each formed by a wet film formation method using a composition containing, as a hole-injecting/transporting compound, an arylamine polymer compound that has a repeating unit having a triarylamine structure therein, in which when the number of atoms present on the path which is the smallest in the number of atoms present thereon, of the paths which each connect the nonaromatic tertiary nitrogen atoms contained in any two triarylamine structures present in each polymer compound, is taken as N: the minimum number of atoms between nitrogen atoms in the compound, then the N in each hole injection/transport layer is in a specific state.
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