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. 12, 2026
Filed:
Feb. 01, 2021
Semiconductor Energy Laboratory Co., Ltd., Kanagawa-ken, JP;
Tomoya Hirose, Atsugi, JP;
Yasuhiro Niikura, Tokyo, JP;
Hiroshi Kadoma, Sagamihara, JP;
Nobuharu Ohsawa, Zama, JP;
Harue Osaka, Atsugi, JP;
Satoshi Seo, Sagamihara, JP;
Abstract
An organic compound that easily exhibits thermally activated delayed fluorescence (TADF) is provided. An organic compound represented by General Formula (G1) is provided. In General Formula (G1), Rto Rare each independently any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 7 carbon atoms, and a substituted or unsubstituted diarylamino group; at least one of Rto Ris a substituted or unsubstituted diarylamino group; α is a substituted or unsubstituted phenylene group; n is an integer of 0 to 4; and A represents a substituted or unsubstituted benzofuropyrimidine skeleton or benzothienopyrimidine skeleton.