ORGANIC EL EMISSION DEVICE

WIPO Patent Application WO/2017/038381

A1

Provided is an organic EL emission device that can suppress the occurrence of leak current as a result of an organic functional layer covering the lateral surfaces of a positive electrode layer and the positive electrode layer and a negative electrode layer being near to each other. The present invention includes an organic EL element in which the positive electrode layer, the organic functional layer, and the negative electrode layer are laminated on a substrate, and when the substrate is viewed in plan view, the positive electrode layer, the organic functional layer, and the negative electrode layer are superimposed. The organic functional layer is formed by laminating, from the positive electrode layer side, a hole transport property layer and an emission layer, in that order. The hole transport property layer includes a hole injection layer and a hole transport layer, and is in contact with the positive electrode layer and also with the emission layer. When the organic EL element is viewed in cross section view, at least a portion of the lateral surfaces of the positive electrode layer is covered by the organic functional layer, and the average thickness of the hole transport property layer is 0.5 to 1.5 times the average thickness of the positive electrode layer.

YAMATANI AKINORI (JP)
MIYAZATO RYOKO (JP)

PCT/JP2016/073093

March 09, 2017

August 05, 2016

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KANEKA CORP (JP)

H01L51/50; H05B33/06; H05B33/12; H05B33/28

WO2013176069A1	2013-11-28
WO2006085615A1	2006-08-17
WO2013031345A1	2013-03-07
WO2014057678A1	2014-04-17
WO2012096232A1	2012-07-19

JP2014044894A	2014-03-13
JP2014232861A	2014-12-11
JP2013070086A	2013-04-18

FUJITA Takashi et al. (JP)

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