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:
Jul. 17, 2001
Filed:
Jun. 18, 1999
Applicant:
Inventors:
Achim Böhler, Braunschweig, DE;
Stefan Wiese, Braunschweig, DE;
Dirk Metzdorf, Braunschweig, DE;
Wolfgang Kowalsky, Braunschweig, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 3/300 ; H01J 1/62 ;
U.S. Cl.
CPC ...
H01L 3/300 ; H01J 1/62 ;
Abstract
An organic light emitting diode includes a transparent bottom electrode located on a substrate, a top electrode, at least one organic functional layer disposed between the bottom electrode and the top electrode and a semitransparent layer located on the bottom electrode. The semitransparent layer is formed of a metal having a work function of between 4 and 7 eV.