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, 2015
Filed:
Nov. 03, 2011
Hans-peter Loebl, Monschau-Imgenbroich, DE;
Herbert Friedrich Boerner, Aachen, DE;
Claudia Michaela Goldmann, Kreuzau, DE;
Hans-Peter Loebl, Monschau-Imgenbroich, DE;
Herbert Friedrich Boerner, Aachen, DE;
Claudia Michaela Goldmann, Kreuzau, DE;
Koninklijkle Philips N.V., Eindhoven, NL;
Abstract
The invention provides an OLED device with improved light out-coupling comprising an electroluminescent layer stack () on top of a substrate (), where the electroluminescent layer stack () comprises an organic light-emitting layer stack () with one or more organic layers sandwiched between a first electrode () facing towards the substrate () and a second electrode () to apply a driving voltage to the organic light-emitting layer stack (), and a first electron transport layer stack () arranged between the organic light emitting layers stack () and the second electrode (), wherein the electron transport layer stack () comprises an electron transport layer () made of a first electron transport material having a low refractive index and at least one n-doped layer (). The invention further relates to a method to manufacture these OLED devices.