Light-emitting element, light-emitting device, display device, electronic device, and lighting device

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12161007
APP PUB NO 20210336173A1
SERIAL NO

17370526

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Abstract

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An object is to provide a light-emitting element which uses a plurality of kinds of light-emitting dopants and has high emission efficiency. In one embodiment of the present invention, a light-emitting device, a light-emitting module, a light-emitting display device, an electronic device, and a lighting device each having reduced power consumption by using the above light-emitting element are provided. Attention is paid to Förster mechanism, which is one of mechanisms of intermolecular energy transfer. Efficient energy transfer by Förster mechanism is achieved by making an emission wavelength of a molecule which donates energy overlap with a local maximum peak on the longest wavelength side of a graph obtained by multiplying an absorption spectrum of a molecule which receives energy by a wavelength raised to the fourth power.

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Patent Owner(s)

  • SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hirakata, Yoshiharu Kanagawa, JP 504 10954
Ishisone, Takahiro Kanagawa, JP 104 1780
Seo, Satoshi Kanagawa, JP 1557 30420
Yamazaki, Shunpei Tokyo, JP 7534 239327

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