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:
Jul. 06, 2010
Filed:
Jun. 21, 2005
Dietrich Bertram, Aachen, DE;
Helmut Bechtel, Roetgen, DE;
Wolfgang Busselt, Roetgen, DE;
Horst Greiner, Aachen, DE;
Dietrich Bertram, Aachen, DE;
Helmut Bechtel, Roetgen, DE;
Wolfgang Busselt, Roetgen, DE;
Horst Greiner, Aachen, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
An LED includes a substrate layer with a first surface and a second surface opposing the first surface and having a refractive index of n. A light emitter is provided on the first surface and an array of particles is arranged on the second surface. The index matching layer between the particles on the second surface has a refractive index of nbeing n2≧n−0.5 and n≦n+3. Further, the filling height of the index matching layer is lower than the maximum height of the array of particles.