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)
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:
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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