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:
Oct. 13, 2026
Filed:
Oct. 03, 2022
Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken, JP;
Abstract
A novel light-emitting device that is highly convenient, useful, or reliable is provided. The light-emitting device includes a first electrode, a second electrode, a first layer, a second layer, and a third layer. The first layer is interposed between the first electrode and the second electrode. The second layer is interposed between the second electrode and the first layer. The third layer is interposed between the second layer and the first layer. The first layer contains a first light-emitting material. The first light-emitting material has an emission spectrum having a peak at a wavelength λ. The first layer has an ordinary refractive index nat the wavelength λ. The second layer contains a second light-emitting material. The second light-emitting material has an emission spectrum having a peak at a wavelength λ. The second layer has an ordinary refractive index nat the wavelength λ. The third layer has an ordinary refractive index nwhich is lower than the ordinary refractive index nat the wavelength λ. The third layer has an ordinary refractive index nwhich is lower than the ordinary refractive index nat the wavelength λ
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile