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:
Oct. 25, 2011
Filed:
Mar. 22, 2010
Aurelie Falcou, Frankfurt, DE;
Arne Büsing, Frankfurt, DE;
Susanne Heun, Bad Soden, DE;
Jürgen Steiger, Frankfurt, DE;
Anja Gerhard, Egelsbach, DE;
Niels Schulte, Kelkheim, DE;
Heinrich Becker, Eppstein-Niederjosbach, DE;
Aurelie Falcou, Frankfurt, DE;
Arne Büsing, Frankfurt, DE;
Susanne Heun, Bad Soden, DE;
Jürgen Steiger, Frankfurt, DE;
Anja Gerhard, Egelsbach, DE;
Niels Schulte, Kelkheim, DE;
Heinrich Becker, Eppstein-Niederjosbach, DE;
Merck Patent GmbH, Darmstadt, DE;
Abstract
The present invention relates to white-emitting copolymers which are obtained by a combination of blue-, green- and red-emitting repeating units. The copolymers of the invention display better film formation and an improved efficiency when used in polymeric organic light-emitting diodes compared to materials according to the prior art.