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. 07, 2010
Filed:
Jul. 27, 2006
Alessandro Maschietto, Paese, IT;
Giovanni Scilla, Fontane Die Villorba, IT;
Alessandro Maschietto, Paese, IT;
Giovanni Scilla, Fontane Die Villorba, IT;
OSRAM Gesellschaft mit beschraenkter Haftung, Munich, DE;
Abstract
A LED arrangement includes:—a plurality of cells () each including at least one respective LED having a binning class as a function of its emission wavelength (L, L) and brightness (B, B) characteristics, —a plurality of impedance elements (R, R, R, R) respectively coupled with the cells (), each impedance element (R, R, R, R) having an impedance value indicative of the binning class of the at least one LED included in the respective cell (), and —a controller () configured for sensing () the impedance values of the impedance elements (R, R, R, R) and adaptively drive each cell () as a function of its binning class as indicated by the impedance element (R, R, R, R) coupled to the cell.