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Title:
LIGHT-EMITTING DEVICE, LIGHT-EMITTING APPARATUS, ELECTRONIC EQUIPMENT, AND LIGHTING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/172130
Kind Code:
A1
Abstract:
Provided is a light-emitting device which has high heat resistance during the production process. Provided is a light-emitting device in which: there is a second electrode positioned on a first electrode so as to sandwich a first EL layer therebetween; the first EL layer at least has a first light-emitting layer; there is a second EL layer positioned on the first EL layer; the second EL layer at least has a second light-emitting layer, a first electron transport layer, a second electron transport layer and an electron injection layer; the first electron transport layer is on the second light-emitting layer; the second electron transport layer is on the first electron transport layer; there is an insulating layer which contacts a lateral surface of the first light-emitting layer, a lateral surface of the second light-emitting layer, a lateral surface of the first electron transport layer and a lateral surface of the second electron transport layer; the electron injection layer is on the second electron transport layer; the insulating layer is positioned between the electron injection layer and the lateral surface of the first light-emitting layer, the lateral surface of the second light-emitting layer, the lateral surface of the first electron transport layer and the lateral surface of the second electron transport layer; and the second electron transport layer has a heterocyclic aromatic compound which has one or more heterocyclic aromatic rings and an organic compound which differs from the heterocyclic aromatic compound.

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WO/2008/056799IRIDIUM COMPLEX COMPOUND, ORGANIC ELECTROLUMINESCENT DEVICE OBTAINED BY USING THE SAME, AND USES OF THE DEVICE
JP4513800Manufacturing method of organic EL element
WO/2021/205635DISPLAY DEVICE AND METHOD FOR MANUFACTURING SAME
Inventors:
YOSHIYASU YUI (JP)
HASHIMOTO NAOAKI (JP)
TAKAHASHI TATSUYOSHI (JP)
KAWAKAMI SACHIKO (JP)
SEO SATOSHI (JP)
Application Number:
PCT/IB2022/050881
Publication Date:
August 18, 2022
Filing Date:
February 02, 2022
Export Citation:
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Assignee:
SEMICONDUCTOR ENERGY LAB (JP)
International Classes:
H05B33/22; H01L51/50; H05B33/12
Domestic Patent References:
WO2020004086A12020-01-02
Foreign References:
US20200161383A12020-05-21
JP2007525023A2007-08-30
JP2020504911A2020-02-13
US20150069357A12015-03-12
KR20150038800A2015-04-09
CN109509765A2019-03-22
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