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, 2007
Filed:
Jul. 25, 2003
Raymond Kwong, Plainsboro, NJ (US);
Yeh-jiun Tung, Princeton, NJ (US);
Bin MA, Monroeville, PA (US);
David B. Knowles, Apollo, PA (US);
Raymond Kwong, Plainsboro, NJ (US);
Yeh-Jiun Tung, Princeton, NJ (US);
Bin Ma, Monroeville, PA (US);
David B. Knowles, Apollo, PA (US);
Universal Display Corporation, Ewing, NJ (US);
Abstract
A device is provided, having an anode, a cathode, and a first organic layer disposed between the anode and the cathode. The first organic layer produces phosphorescent emission when a voltage is applied between the anode and the cathode. An organic enhancement layer disposed between the first organic layer and the cathode is also provided. The organic enhancement layer is in direct contact with the first organic layer. The organic enhancement layer may comprise a material of structure (I): The material of structure I is thermally stable and is a high energy band gap material.