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:
Mar. 10, 2009
Filed:
Jul. 28, 2005
Yong Qiu, Beijing, CN;
Yudi Gao, Beijing, CN;
Deqiang Zhang, Beijing, CN;
Wang Liduo, Beijing, CN;
Tsinghua University, Beijing, CN;
Beijing Visionox Technology Co., Ltd., Beijing, CN;
Abstract
The present invention relates to an organic electroluminescence device and provides a new material composition scheme for an electron injection layer. The organic electroluminescence device of the present invention includes an electron injection layer which contains a material represented by formula ABO, wherein A is one of an alkali metal and an alkali earth metal, B is one of group VIII metals and 0<x≦2, 0<y≦3, 0<z≦6. A is selected from one of Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr and Ba. B is selected from one of Fe, Co, Ni, Ru, Rh, Pd, Os, Ir and Pt. The electron injection layer can be formed of Al and ABO. The electron injection layer has high electron injection ability, and the device has low threshold voltage, high luminance, high efficiency and long life.