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Title:
ARYLAMINE COMPOUND HAVING BENZOAZOLE RING STRUCTURE, AND ORGANIC ELECTROLUMINESCENT ELEMENT
Document Type and Number:
WIPO Patent Application WO/2020/171221
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an organic EL element in which a capping layer is combined with various materials of the element so that properties of each of the materials of the element can be effectively demonstrated. The capping layer is constituted from a material that does not affect material inside the organic EL element when sunlight having wavelengths of 400-410 nm is absorbed, that has a high absorption coefficient and a high refractive index in order to greatly improve light extraction efficiency, that gives a thin film having excellent stability, durability and lightfastness, and that does not absorb light in the blue, green and red wavelength regions. The present invention is: an arylamine compound having a benzoazole ring structure; and an organic EL element having a capping layer that contains the arylamine compound, and a luminescent layer that contains a host and a phosphorescent dopant.

Inventors:
MOCHIZUKI SHUNJI (JP)
UEHARA TAKUYA (JP)
KASE KOUKI (JP)
HIRAYAMA YUTA (JP)
YAMAMOTO TAKESHI (JP)
HAYASHI SHUICHI (JP)
CHOI YOUNG-TAE (KR)
LEE SE-JIN (KR)
PARK SEOK-BAE (KR)
YU TAE-JUNG (KR)
YANG BYUNG-SUN (KR)
Application Number:
PCT/JP2020/007158
Publication Date:
August 27, 2020
Filing Date:
February 21, 2020
Export Citation:
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Assignee:
HODOGAYA CHEMICAL CO LTD (JP)
SFC CO LTD (KR)
International Classes:
C07D405/14; C07D209/82; C07D251/24; C07D263/62; C07D277/66; C09K11/06; H01L51/50; H05B33/24
Domestic Patent References:
WO2015001726A12015-01-08
Foreign References:
JP2015092485A2015-05-14
JP2013028597A2013-02-07
JP2008069120A2008-03-27
US20150200373A12015-07-16
CN107973786A2018-05-01
CN107868067A2018-04-03
KR20190007257A2019-01-22
JP2019500314A2019-01-10
US5792557A1998-08-11
US5639914A1997-06-17
EP3042943A12016-07-13
US20170104163A12017-04-13
US7102282B12006-09-05
US20140225100A12014-08-14
US10147891B22018-12-04
JP2002105055A2002-04-10
EP2730583A12014-05-14
US20180093962A12018-04-05
EP2684932A12014-01-15
Other References:
JAPAN SOCIETY OF APPLIED PHYSICS, 2001, pages 55 - 61
See also references of EP 3929193A4
Attorney, Agent or Firm:
SHOWA INTERNATIONAL PATENT FIRM (JP)
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