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:
Jan. 08, 2008
Filed:
Nov. 26, 2002
Simon Blumel, Schierling, DE;
Simon Blumel, Schierling, DE;
Osram Opto Semiconductors GmbH, Regensburg, DE;
Abstract
A circuit arrangement for an LED array having two or more parallel-connected LED chains (LK, LK, LK), in each of which at least one LED () is arranged and, when there are two or more LEDs (), the latter are connected in series. In each case, the anode sides of the LED chains (LK, LK, LK) can be coupled to the positive pole of a supply voltage (U) and the cathode sides can be coupled to the negative pole of the supply voltage (U). A regulating arrangement (RA, RA, RA) for regulating an intended current distribution between the individual LED chains (LK, LK, LK) is case connected in series with the respective LED chain (LK, LK, LK).