ORGANIC ELECTROLUMINESCENT ELEMENT - HODOGAYA CHEMICAL CO LTD

Title:

ORGANIC ELECTROLUMINESCENT ELEMENT

Document Type and Number:

WIPO Patent Application WO/2019/059334

Kind Code:

A1

Abstract:

[Problem] The purpose of the present invention is to provide an organic EL element by combining, as materials for an organic EL element with high light-emission efficiency and high durability, various types of organic EL element-use materials having excellent hole and electron injection/transportation performance, electron blocking capabilities, and thin film properties such as stability and durability, where the materials are combined so as to effectively exhibit the characteristics of each of the materials. The provided organic EL element has (1) high light-emission efficiency and power efficiency, (2) a low light-emission start voltage, (3) a low practical drive voltage, and (4) a particularly long life. [Solution] Provided is an organic electroluminescent element characterized by having, in the stated order, at least an anode, a hole transport layer, a light-emission layer, an electron transport layer, and a cathode, wherein the hole transport layer contains an arylamine compound represented by general formula (1), and the light-emission layer contains a heterocyclic compound having a condensed ring structure represented by general formula (2) or a heterocyclic compound having a condensed ring structure represented by formula (3).

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Inventors:

HIRAYAMA YUTA (JP)
YAMAMOTO TAKESHI (JP)
SURUGA KAZUYUKI (JP)
LEE SE-JIN (KR)
LEE OUN-GYU (KR)
SHIN BONG-KI (KR)

Application Number:

PCT/JP2018/034990

Publication Date:

March 28, 2019

Filing Date:

September 21, 2018

Export Citation:

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Assignee:

HODOGAYA CHEMICAL CO LTD (JP)
SFC CO LTD (KR)

International Classes:

H01L51/50; C09K11/06

Domestic Patent References:

WO2017073594A1	2017-05-04
WO2016111270A1	2016-07-14
WO2017122813A1	2017-07-20
WO2008062636A1	2008-05-29
WO2014009310A1	2014-01-16

Foreign References:

JP2004253298A	2004-09-09
US20050236976A1	2005-10-27
JPH0848656A	1996-02-20
JP3194657B2	2001-07-30
JPS4943840B1	1974-11-25
JP2006151979A	2006-06-15
JP2014513064A	2014-05-29
KR20130060157A	2013-06-07

Other References:

THE JAPAN SOCIETY OF APPLIED PHYSICS, PROCEEDINGS OF THE NINTH WORKSHOP, 2001, pages 23 - 31
APPL.PHYS.LET., vol. 98, 2011
JAPAN OLED FORUM, PROCEEDINGS OF THE THIRD MEETING, 2006, pages 13 - 14
See also references of EP 3690970A4