Title:
ORGANIC ELECTROLUMINESCENT ELEMENT, METHOD FOR PRODUCING SAME, LIGHTING DEVICE PROVIDED WITH SAME, DISPLAY DEVICE AND PRINTED MODEL
Document Type and Number:
WIPO Patent Application WO/2022/163199
Kind Code:
A1
Abstract:
The present invention provides: an organic electroluminescent element which is able to be produced at low cost, while having a high luminous efficiency and a long service life, and which is able to be suppressed in the performance deterioration during the production in the atmosphere; a method for producing this organic electroluminescent element; a lighting device; a display device; and a printed model which comprises this organic electroluminescent element, this lighting device or this display device. An organic electroluminescent element which comprises, at least on a substrate, an image display part that is held between a positive electrode and a negative electrode facing each other, and which is characterized in that: the image display part is composed of a light emitting image display part and a non-light emitting image display part; the light emitting image display part comprises at least an electrode and a light emitting layer that is adjacent to a charge injection layer or a charge transport layer; the light emitting layer contains a polymer that has an electrical conductivity of 1 (S/m) or less, a charge transport host compound and a light emitting dopant; the mass ratio of the polymer is within the range of 5 to 80 if the total mass of the light emitting layer is taken as 100; and the absolute value of the difference between the common logarithms of the hole mobility and the electron mobility of the light emitting layer is 4.5 or less.
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Inventors:
OIKAWA KAZUHIRO (JP)
IZUMI TOMOO (JP)
TAKA HIDEO (JP)
IZUMI TOMOO (JP)
TAKA HIDEO (JP)
Application Number:
PCT/JP2021/046667
Publication Date:
August 04, 2022
Filing Date:
December 17, 2021
Export Citation:
Assignee:
KONICA MINOLTA INC (JP)
International Classes:
H01L51/50; G09F9/00; G09F9/30; H01L27/32; H05B33/10
Domestic Patent References:
| WO2012091005A1 | 2012-07-05 | |||
| WO2012132863A1 | 2012-10-04 | |||
| WO2012160714A1 | 2012-11-29 | |||
| WO2015064432A1 | 2015-05-07 |
Foreign References:
| JP2005050589A | 2005-02-24 | |||
| JP2008291236A | 2008-12-04 | |||
| JP2020164518A | 2020-10-08 | |||
| JP2018173640A | 2018-11-08 | |||
| KR20170143292A | 2017-12-29 | |||
| JP2003086370A | 2003-03-20 |
Attorney, Agent or Firm:
KOYO INTERNATIONAL PATENT FIRM (JP)
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