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:
Aug. 26, 2025
Filed:
Aug. 25, 2021
Applicant:
Samsung Display Co., Ltd., Yongin-si, KR;
Inventors:
Junbo Sim, Suwon-si, KR;
Dukki Kim, Suwon-si, KR;
Sehun Kim, Yongin-si, KR;
Hyojin Ko, Seoul, KR;
Jaekook Ha, Seoul, KR;
Assignee:
Samsung Display Co., Ltd., Yongin-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B82Y 20/00 (2011.01); C09D 11/36 (2014.01); B82Y 40/00 (2011.01); H10K 50/115 (2023.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 71/00 (2023.01); H10K 71/40 (2023.01); H10K 102/00 (2023.01);
U.S. Cl.
CPC ...
C09D 11/36 (2013.01); B82Y 20/00 (2013.01); B82Y 40/00 (2013.01); H10K 50/115 (2023.02); H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 71/00 (2023.02); H10K 71/40 (2023.02); H10K 2102/331 (2023.02);
Abstract
An ink composition for forming an electron transport region in a light emitting element includes inorganic nanoparticles and a first solvent having a Hansen solubility parameter hydrogen bonding term (δH) value of 5 or less in order to increase dispersion stability of the inorganic nanoparticles, and thereby prevent or reduce nozzle clogging in the head of an inkjet printing device.