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:
Dec. 20, 2011
Filed:
Nov. 12, 2007
Kamala Rajan, Newtown, PA (US);
Ken Urbanik, Ewing, NJ (US);
Ruiqing MA, Morristown, NJ (US);
Brian D'andrade, Westhampton, NJ (US);
Kamala Rajan, Newtown, PA (US);
Ken Urbanik, Ewing, NJ (US);
Ruiqing Ma, Morristown, NJ (US);
Brian D'Andrade, Westhampton, NJ (US);
Universal Display Corporation, Ewing, NJ (US);
Abstract
Charge transport enhancement layers and structures are provided that may improve the performance of organic devices, specifically organic light emitting devices. A charge transport enhancement layer may include a layer or an inorganic material, metal oxide, halide, and/or alkali disposed between two organic layers, and separated from the cathode by an intervening organic layer. One or more CTELs may be used, such as in an alternating stack of organic and CTEL layers. Surprisingly, it has been found that the use of one or more CTELs arranged in a stack with intervening organic layers may improve the performance of the device even where the layer is not directly adjacent to the cathode.