ORGANIC ELECTROLUMINESCENCE ELEMENT, DISPLAY DEVICE, AND LIGHTING DEVICE

Title:

ORGANIC ELECTROLUMINESCENCE ELEMENT, DISPLAY DEVICE, AND LIGHTING DEVICE

Document Type and Number:

WIPO Patent Application WO/2017/126370

Kind Code:

A1

Abstract:

The present invention addresses the problem of providing: an organic electroluminescence (EL) element having minimal initial degradation, high light-emitting efficiency, and long element service life; and a display device and a lighting device equipped with said organic EL element. This organic EL element has organic layers where at least one light-emitting layer is included between an anode and a cathode, wherein the organic EL element is characterized in that at least one of the light-emitting layers contains a π-conjugated compound and a compound having a prescribed structure as a light-emitting compound, electron transition between HOMO and LUMO occurring in the π-conjugated compound due to through-space interaction in the same molecule, and the π-conjugated compound having a π-conjugated aromatic ring in the area in which the HOMO and/or the LUMO is localized.

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Inventors:

OTSU SHINYA (JP)
OSHIYAMA TOMOHIRO (JP)
MIYATA YASUO (JP)
KITA HIROSHI (JP)

Application Number:

PCT/JP2017/000529

Publication Date:

July 27, 2017

Filing Date:

January 11, 2017

Export Citation:

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Assignee:

KONICA MINOLTA INC (JP)

International Classes:

H01L51/50; C09K11/06; G09F9/30; H01L27/32

Domestic Patent References:

WO2015125571A1	2015-08-27
WO2015014435A1	2015-02-05
WO2016017757A1	2016-02-04
WO2016017760A1	2016-02-04
WO2016116508A1	2016-07-28

Foreign References:

KR20140141337A	2014-12-10
JP2009060089A	2009-03-19
JP2014503502A	2014-02-13

Other References:

LEE ET AL.: "Systematic Control of Photophysical Properties of Host Materials for High Quantum Efficiency above 25% in Green Thermally Activated Delayed Fluorescent Devices", APPLIED MATERIALS & INTERFACES, vol. 7, 22 January 2015 (2015-01-22), pages 2899 - 2904, XP055317224

Attorney, Agent or Firm:

KOYO INTERNATIONAL PATENT FIRM (JP)

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