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:
Mar. 23, 2021
Filed:
Sep. 05, 2017
Sharp Kabushiki Kaisha, Sakai, JP;
Yuto Tsukamoto, Sakai, JP;
Shinichi Kawato, Sakai, JP;
Tokiyoshi Umeda, Sakai, JP;
Manabu Niboshi, Sakai, JP;
Youhei Nakanishi, Sakai, JP;
Hisayuki Utsumi, Sakai, JP;
Masayuki Kanehiro, Sakai, JP;
Shota Okamoto, Sakai, JP;
SHARP KABUSHIKI KAISHA, Sakai, JP;
Abstract
To provide a light-emitting device for achieving fluorescence emission with higher efficiency and longer life, a light-emitting device includes an exciton generation layer in which quantum dots are dispersed, a light-emitting layer in which light emitters, which are phosphors or phosphorescent members, are dispersed, the light-emitting layer adjoining the exciton generation layer in a vertical direction, a first electrode located on a lower side of the exciton generation layer and the light-emitting layer, and a second electrode located on an upper side of the exciton generation layer and the light-emitting layer, and the light emission spectrum of the quantum dots and the absorption spectrum of the light emitters at least partially overlap.