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. 17, 2013
Filed:
Dec. 12, 2008
Marcus Antonius Verschuuren, Eindhoven, NL;
Hendrik Adrianus Van Sprang, Eindhoven, NL;
Marcus Antonius Verschuuren, Eindhoven, NL;
Hendrik Adrianus Van Sprang, Eindhoven, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
A semiconductor light emitting diode (, LED), comprising a first and a second electrode () for applying a voltage across an active region () for generation of light, a light emitting surface (), and a plurality of photonic crystals (). Further, at least two photonic crystals () of a first and a second type are adapted to extract light from the active region () and differ from each other with respect to at least one lattice parameter. Each of said at least two photonic crystals () are associated with a respective far field pattern, wherein an arrangement of said plurality of photonic crystals () is provided to arrange said at least two photonic crystals (). In this manner, a far field pattern is created by combining the respective far field patterns associated with each of said at least two photonic crystals ().
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile