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:
Jul. 31, 2018
Filed:
Apr. 03, 2014
Applicants:
Chi Ming Che, Hong Kong, HK;
Chi Fai Kui, Hong Kong, HK;
Chi Chung Kwok, Hong Kong, HK;
Inventors:
Assignee:
VERSITECH LIMITED, Hong Kong, HK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 51/54 (2006.01); C09K 11/06 (2006.01); H01L 51/00 (2006.01); C07F 15/00 (2006.01); H01L 51/50 (2006.01);
U.S. Cl.
CPC ...
H01L 51/0087 (2013.01); C07F 15/0086 (2013.01); C09K 11/06 (2013.01); C09K 2211/1029 (2013.01); C09K 2211/185 (2013.01); H01L 51/5012 (2013.01); H01L 51/5016 (2013.01);
Abstract
Described herein are novel platinum(II) emitters. These materials show high emission quantum efficiency, a low self-quenching constant, and are stable in thermal deposition processes. Organic light-emitting diodes (OLEDs) fabricated from these materials can have pure green emission, high efficiency and low efficiency roll-off. The OLEDs can have a chemical structure of: