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. 31, 2022
Filed:
Dec. 16, 2016
Applicants:
Cambridge Display Technology Limited, Godmanchester, GB;
Sumitomo Chemical Company Limited, Tokyo, JP;
Inventors:
Thomas Kugler, Godmanchester, GB;
Sheena Zuberi, Godmanchester, GB;
Florence Bourcet, Godmanchester, GB;
Assignees:
Cambridge Display Technology Limited, Godmanchester, GB;
Sumitomo Chemical Company Limited, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/00 (2006.01); C07D 235/18 (2006.01); C08G 61/02 (2006.01); H01L 51/50 (2006.01); H01L 51/56 (2006.01);
U.S. Cl.
CPC ...
H01L 51/0072 (2013.01); C07D 235/18 (2013.01); C08G 61/02 (2013.01); H01L 51/0039 (2013.01); H01L 51/0051 (2013.01); C08G 2261/143 (2013.01); C08G 2261/148 (2013.01); C08G 2261/1424 (2013.01); C08G 2261/1426 (2013.01); C08G 2261/3142 (2013.01); C08G 2261/514 (2013.01); C08G 2261/95 (2013.01); H01L 51/0007 (2013.01); H01L 51/0028 (2013.01); H01L 51/5092 (2013.01); H01L 51/56 (2013.01); H01L 2251/308 (2013.01); H01L 2251/552 (2013.01);
Abstract
A charge-transfer salt formed from a material comprising a repeat unit of formula (I) and an n-dopant: wherein BG is a backbone group of the repeat unit; Ris a ionic substituent comprising at least one cationic or anionic group; n is at least 1; Ris a non-ionic substituent; and m is 0 or a positive integer; the material further comprising a counterion balancing the charge of the cationic or anionic group.