The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 05, 2016
Filed:
Jan. 31, 2014
Hisao Ikeda, Zama, JP;
Takuya Kawata, Atsugi, JP;
Manabu Niboshi, Osaka, JP;
Katsuhiro Kikuchi, Osaka, JP;
Shinichi Kawato, Osaka, JP;
Takashi Ochi, Osaka, JP;
Yuto Tsukamoto, Osaka, JP;
Tomohiro Kosaka, Osaka, JP;
Tomofumi Osaki, Osaka, JP;
Hisao Ikeda, Zama, JP;
Takuya Kawata, Atsugi, JP;
Manabu Niboshi, Osaka, JP;
Katsuhiro Kikuchi, Osaka, JP;
Shinichi Kawato, Osaka, JP;
Takashi Ochi, Osaka, JP;
Yuto Tsukamoto, Osaka, JP;
Tomohiro Kosaka, Osaka, JP;
Tomofumi Osaki, Osaka, JP;
Semiconductor Energy Laboratory Co., Ltd., Atsugi-shi, Kanagawa-ken, JP;
Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;
Abstract
The emission efficiency of a light-emitting device including a microcavity structure is improved. The light-emitting device includes a plurality of light-emitting elements. The plurality of light-emitting elements each include a reflective electrode, a transparent electrode, a plurality of light-emitting layers, and a semi-transmissive and semi-reflective electrode stacked in that order. The plurality of light-emitting layers emit light of different colors. A surface roughness of the transparent electrode in the light-emitting element which is among the plurality of light-emitting elements and in which light emitted from the light-emitting layer closest to the reflective electrode is amplified and emitted outside is greater than surface roughnesses of the transparent electrodes in the other light-emitting elements.