Light-emitting device including a plurality of organic electroluminescent elements

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United States of America Patent

PATENT NO 11672171
APP PUB NO 20210202848A1
SERIAL NO

17202020

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Abstract

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A light-emitting device includes a plurality of organic EL elements. Each of the organic EL elements includes a reflection electrode, a hole transport region, an electron-trapping luminescent layer, and a light extraction electrode in this order. The hole transport region has a sheet resistance of 4.0×107 Ω/sq.⋅ or more at a current of 0.1 nA/pixel, and the total thickness of the hole transport region and the electron-trapping luminescent layer is equivalent to an optical path length enabling emission from the electron-trapping luminescent layer to be enhanced.

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ishizuya, Koji Kawasaki, JP 32 61
Ito, Takayuki Kawasaki, JP 444 4976
Kajimoto, Norifumi Zama, JP 41 150
Miyashita, Hirokazu Ebina, JP 98 172
Sano, Hiroaki Kawasaki, JP 125 6700
Takahashi, Tetsuo Kawasaki, JP 183 2320
Takaya, Itaru Atsugi, JP 35 234

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