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:
May. 11, 2004
Filed:
May. 03, 2002
Karl-Heinz Schlereth, Burglengenfeld, DE;
Volker Härle, Laaber, DE;
Norbert Stath, Regensburg, DE;
Osram Opto Semiconductors GmbH & Co. oHG, Regensburg, DE;
Abstract
A white light source is described and has a UV-/blue-emitting semiconductor LED and an embedding compound provided with phosphor particles. The LED is provided with a plurality of light-emitting zones that are applied within a layer structure on a common substrate. An emission maxima of the light-emitting zones are energetically detuned relative to one another by different choice of the composition or of the layer thickness of the semiconductor material.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile