ORGANIC ELECTROLUMINESCENT ELEMENT

WIPO Patent Application WO/2020/017552

A1

The present invention is an organic EL element in which, selected and used as a material for a capping layer is an arylamine material that provides excellent stability and durability to a thin film, particularly a diamine compound that has a particular benzazol ring structure having a high refractive index and that is a material having a high absorbance as measured at a wavelength of 400-410 nm in an absorption spectrum at a concentration of 10-5 mol/L.

KASE KOUKI (JP)
MOCHIZUKI SHUNJI (JP)
HIRAYAMA YUTA (JP)

PCT/JP2019/028088

January 23, 2020

July 17, 2019

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HODOGAYA CHEMICAL CO LTD (JP)

H05B33/02; H01L51/50

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TAZAKI Akira et al. (JP)

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