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:
Apr. 21, 2025
Filed:
Mar. 28, 2019
Applicant:
Sumitomo Chemical Company, Limited, Tokyo, JP;
Inventors:
Toshiaki Sasada, Tsukuba, JP;
Ryuji Matsumoto, Nomi, JP;
Assignee:
SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/00 (2005.12); H10K 85/30 (2022.12); H10K 85/60 (2022.12); H10K 50/11 (2022.12); H10K 101/10 (2022.12);
U.S. Cl.
CPC ...
H10K 85/322 (2023.01); H10K 85/623 (2023.01); H10K 85/626 (2023.01); H10K 85/636 (2023.01); H10K 85/6572 (2023.01); H10K 85/6576 (2023.01); H10K 50/11 (2023.01); H10K 2101/10 (2023.01);
Abstract
A light emitting device having an anode, a cathode, and an organic layer disposed between the anode and the cathode and containing a composition is described. The composition contains a compound (A) represented by the formula (FH) and a compound (B) having a condensed hetero ring skeleton (b) containing a boron atom and a nitrogen atom in the ring, and the molecular weight (MA) of the compound (A) and the molecular weight (MB) of the compound (B) satisfy the formula (M1-1) and the formula (M2-1).