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:
May. 14, 2024
Filed:
Sep. 05, 2018
Applicant:
Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken, JP;
Inventors:
Takeyoshi Watabe, Kanagawa, JP;
Ryohei Yamaoka, Kanagawa, JP;
Satoshi Seo, Kanagawa, JP;
Nobuharu Ohsawa, Kanagawa, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 29/08 (2006.01); H10K 85/30 (2023.01); H10K 85/60 (2023.01); B82Y 20/00 (2011.01); H10K 50/11 (2023.01); H10K 50/115 (2023.01); H10K 50/16 (2023.01); H10K 50/858 (2023.01); H10K 101/10 (2023.01); H10K 101/40 (2023.01);
U.S. Cl.
CPC ...
H10K 85/6572 (2023.02); H10K 85/342 (2023.02); H10K 85/631 (2023.02); H10K 85/654 (2023.02); H10K 85/6576 (2023.02); B82Y 20/00 (2013.01); H10K 50/11 (2023.02); H10K 50/115 (2023.02); H10K 50/16 (2023.02); H10K 50/858 (2023.02); H10K 2101/10 (2023.02); H10K 2101/40 (2023.02);
Abstract
A light-emitting device with high outcoupling efficiency is provided. In the light-emitting device including a light-emitting layer between a pair of electrodes, a low refractive index layer containing an organic compound and an inorganic compound is provided between the light-emitting layer and an anode or between the light-emitting layer and a cathode, and the low refractive index layer has a refractive index of less than or equal to 1.80 at a wavelength of light extracted from the light-emitting layer.