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:
Apr. 03, 2012
Filed:
Oct. 04, 2005
Applicants:
Yeh Tung, Princeton, NJ (US);
Brian W. D'andrade, Westampton, NJ (US);
Michael S. Weaver, Princeton, NJ (US);
James Esler, Levittown, PA (US);
Inventors:
Yeh Tung, Princeton, NJ (US);
Brian W. D'Andrade, Westampton, NJ (US);
Michael S. Weaver, Princeton, NJ (US);
James Esler, Levittown, PA (US);
Assignee:
Universal Display Corporation, Ewing, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 33/14 (2006.01); B32B 9/00 (2006.01); B32B 19/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to OLEDs comprising an electron impeding layer between the cathode and the emissive layer. An organic light emitting device, comprising: an anode; a hole transport layer; an organic emissive layer comprising an emissive layer host and an emissive dopant; an electron impeding layer; an electron transport layer; and a cathode disposed, in that order, over a substrate.