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. 04, 2022
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 that can obtain fluorescence having a narrow spectrum more efficiently, a light-emitting device includes: a light-emitting layer in which thermally activated delayed fluorescence bodies and quantum dots are dispersed; a first electrode in a lower layer than the light-emitting layer; and a second electrode in an upper layer than the light-emitting layer, wherein a light emission spectrum of the thermally activated delayed fluorescence bodies and an absorption spectrum of the quantum dots at least partially overlap each other.