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. 08, 2012
Filed:
Jan. 27, 2009
Applicants:
Radu Surdeanu, Roosbeek, BE;
Viet Nguyen Hoang, Leuven, BE;
Benoit Bataillou, Brussels, BE;
Inventors:
Assignee:
NXP B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 33/48 (2010.01); H01L 33/00 (2010.01);
U.S. Cl.
CPC ...
Abstract
A lighting unit comprises a packaging substrate () formed from a semiconductor, a channel () formed in the substrate and a discrete light emitting diode arrangement () in the channel. A surface region of the channel comprises doped semiconductor layers () which define a light sensor. The arrangement provides a light sensor (which can be used to determine colour and/or output flux) for a LED unit, with the light sensor embedded in substrate used for packaging. This provides a low cost integration process and provides good registration between the light sensor and the LED output.