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:
Oct. 19, 2010
Filed:
Nov. 21, 2006
Hsiang-lun Hsu, Shanghai, CN;
Hsiang-Lun Hsu, Shanghai, CN;
Grace Semiconductor Manufacturing Corporation, Shanghai, CN;
Abstract
An organic electroluminescent material having the formula and an organic electroluminescent material used for electroluminescent devices is characterized by emission with a high luminance, high illuminant efficiency, low drive voltage, favorable color purity and high thermal steadiness. The hydrogen atom, halogen atom, cyanide group, alkyl group, alkylidene group, cycloalkane group, alkoxy group, amino group, aromatic hydroxy group, alkylaryl group as a substitutive group are used. Not only may it increase the material's glass transition temperature and inhibit the phenomenon of molecular split but also cause this organic electroluminescent device to show a high level of steadiness.