Title:
LIGHT-EMITTING DEVICE, LIGHT-EMITTING APPARATUS, ELECTRONIC EQUIPMENT, AND ILLUMINATION APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/172116
Kind Code:
A1
Abstract:
Provided is a light-emitting device that demonstrates high heat resistance in a manufacturing process. This light-emitting device has a configuration in which: a second electrode is disposed on a first electrode with a first EL layer interposed therebetween; the first EL layer includes at least a first light-emitting layer; a second EL layer is disposed on the first EL layer; the second EL layer includes at least a second light-emitting layer, a first electron transport layer, and a second electron transport layer; the first electron transport layer is disposed on the second light-emitting layer; an insulating layer is disposed in contact with a side surface of the first light-emitting layer, a side surface of the second light-emitting layer, and a side surface of the first electron transport layer; the second electron transport layer is disposed on the first electron transport layer; the insulating layer is located between the second electron transport layer and the side surface of the first light-emitting layer, the side surface of the second light-emitting layer and the side surface of the first electron transport layer; and the first electron transport layer includes a heteroaromatic compound having at least one heteroaromatic ring, and an organic compound that is different from the heteroaromatic compound.
Inventors:
YOSHIYASU YUI (JP)
HASHIMOTO NAOAKI (JP)
TAKAHASHI TATSUYOSHI (JP)
KAWAKAMI SACHIKO (JP)
SEO SATOSHI (JP)
HASHIMOTO NAOAKI (JP)
TAKAHASHI TATSUYOSHI (JP)
KAWAKAMI SACHIKO (JP)
SEO SATOSHI (JP)
Application Number:
PCT/IB2022/050740
Publication Date:
August 18, 2022
Filing Date:
January 28, 2022
Export Citation:
Assignee:
SEMICONDUCTOR ENERGY LAB (JP)
International Classes:
H05B33/22; H01L51/50; H05B33/12
Domestic Patent References:
| WO2020004086A1 | 2020-01-02 |
Foreign References:
| US20200161383A1 | 2020-05-21 | |||
| JP2007525023A | 2007-08-30 | |||
| JP2020504911A | 2020-02-13 | |||
| US20150069357A1 | 2015-03-12 | |||
| KR20150038800A | 2015-04-09 | |||
| CN109509765A | 2019-03-22 |
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