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:
Sep. 09, 2003
Filed:
Jun. 01, 2001
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 2/100 ; H01L 5/140 ;
U.S. Cl.
CPC ...
H01L 2/100 ; H01L 5/140 ;
Abstract
The process of minimizing the operating voltage of an organic light emitting diode includes the steps of providing a transparent substrate and applying a transparent bottom electrode thereto. It furthermore includes the step of applying to the bottom electrode a semitransparent layer of a metal having a work function in the range from 4 to 7 eV and applying to the semitransparent layer at least one organic functional layer and a top electrode including magnesium and silver.