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:
Jan. 07, 2014
Filed:
Apr. 28, 2010
Hans-peter Loebl, Monschau-Imgenbroich, DE;
Hans-Peter Loebl, Monschau-Imgenbroich, DE;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
The present invention provides a color tunable electroluminescent device, such as an OLED device, comprising a substrate, two electrodes, a stack of at least two electroluminescent emission layers () comprising electroluminescent molecules that is disposed between said two electrodes and an interlayer () disposed between at least two adjacent emission layers. The interlayer furthermore is an undoped interlayer and has a thickness that allows the formation of an interface region comprising electroluminescent molecules present in each of the at least two electroluminescent emission layers. Furthermore, methods of color tuning and producing such an electroluminescent device are provided.