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. 18, 2011
Filed:
Jun. 25, 2007
Chia-hung Sun, Hsinchu, TW;
Tsung-shiun Lee, Hsinchu, TW;
Hsing-ju Chen, Hsinchu, TW;
Cheng-neng Liao, Hsinchu, TW;
Chia-Hung Sun, Hsinchu, TW;
Tsung-Shiun Lee, Hsinchu, TW;
Hsing-Ju Chen, Hsinchu, TW;
Cheng-Neng Liao, Hsinchu, TW;
Au Optronics Corporation, Hsinchu, TW;
Abstract
A lighting apparatus comprises a plurality of light sources, a power conversion circuit, a plurality of load-driving coils and a feedback generation coil. The power conversion circuit generates a driving signal for the load-driving coils to generate substantially identical driving currents for driving every light source. Furthermore, the feedback generation coil generates a feedback signal based on the inductions of the currents flowing though the plurality of load driving coils.