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:
Oct. 01, 2013
Filed:
Sep. 12, 2010
Chen-ming Hung, Hsinchu, TW;
I-fong Chen, Hsinchu, TW;
Maung Maung Win, Hsinchu, TW;
Chih-yuan Hsieh, Hsinchu County, TW;
Chen-Ming Hung, Hsinchu, TW;
I-Fong Chen, Hsinchu, TW;
Maung Maung Win, Hsinchu, TW;
Chih-Yuan Hsieh, Hsinchu County, TW;
NOVATEK Microelectronics Corp., Hsinchu Science Park, Hsin-Chu, TW;
Abstract
A method for driving a light-emitting diode based upon an AC input voltage includes receiving and full-wave rectifying the AC input voltage to generate a full-wave rectified input voltage, generating a pulse width modulation signal according to the full-wave rectified input voltage and a luminance signal, and generating a driving voltage according to the pulse width modulation signal and the full-wave rectified input voltage, and applying the driving voltage to the light-emitting diode.