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:
Jan. 24, 2012
Filed:
Oct. 15, 2008
Pengfei Wang, Beijing, CN;
NA LI, Beijing, CN;
Weimin Liu, Beijing, CN;
Shuit-tong Lee, Hong Kong, CN;
Chun-sing Lee, Hong Kong, CN;
PengFei Wang, Beijing, CN;
Na Li, Beijing, CN;
Weimin Liu, Beijing, CN;
Shuit-Tong Lee, Hong Kong, CN;
Chun-Sing Lee, Hong Kong, CN;
Abstract
Disclosed herein are several organic compounds having electron-transporting and/or hole-blocking performance and their preparation method and use and the OLEDs comprising the organic compound. The organic compounds exhibit high ionization potential (IP), electron affinity (Ea), glass transition temperature (Tg) and high electron mobility, and are a kind of good electron-transporting material with good hole-blocking ability. The devices comprising these compounds as one of the emitting layer, electron-transporting layer (ETL) and hole-blocking layer (HBL) show improved efficiency and better color purity.