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. 15, 2015
Filed:
Aug. 04, 2005
Euan C. Smith, Cambridgeshire, GB;
Faisal Qureshi, Cheshire, GB;
Jan Jongman, Cambridge, GB;
CAMBRIDGE DISPLAY TECHNOLOGY LIMITED, Cambridgeshire, GB;
Abstract
An organic electroluminescent device comprising: a transparent substrate; a first electrode disposed over the substrate for injecting charge of a first polarity; a second electrode disposed over the first electrode for injecting charge of a second polarity opposite to said first polarity; an organic light-emitting layer disposed between the first and the second electrode, wherein the second electrode is reflective, the first electrode is transparent or semi-transparent, and one or more intermediate layers of dielectric material with a refractive index greater than 1.8 or a metal material is disposed between the substrate and the first electrode forming a semi-transparent mirror whereby a microcavity is provided between the reflective second electrode and the semi-transparent mirror, all the intermediate layers disposed between the substrate and the first electrode having a surface nearest the organic light-emitting layer not more than 150 nm from a surface of the first electrode nearest the organic light-emitting layer.