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:
Feb. 24, 2009
Filed:
Aug. 15, 2007
Hans Helmut Bechtel, Roetgen, DE;
Wolfgang Busselt, Roetgen, DE;
Joachim Opitz, Aachen, DE;
Markus Heinrich Klein, Aachen, DE;
Dietrich Bertram, Aachen, DE;
Harald Gläser, Freiburg, DE;
Hans Helmut Bechtel, Roetgen, DE;
Wolfgang Busselt, Roetgen, DE;
Joachim Opitz, Aachen, DE;
Markus Heinrich Klein, Aachen, DE;
Dietrich Bertram, Aachen, DE;
Harald Gläser, Freiburg, DE;
Koninklijke Philips Electronics, N.V., Eindhoven, NL;
Abstract
An electroluminescent device includes a substrate and a laminated body composed of a first electrode, an electroluminescent layer and a second electrode. The light output out of the electroluminescent device is increased by arranging a colloidal layer between the substrate and the laminated body. By using pigments in the colloidal layer, the emission color of the electroluminescent device can be changed and the daylight contrast improved.