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:
Aug. 11, 2020
Filed:
Dec. 27, 2018
Applicant:
Power Forest Technology Corporation, Hsinchu County, TW;
Inventor:
Yang-Tai Tseng, Hsinchu County, TW;
Assignee:
Power Forest Technology Corporation, Hsinchu County, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 33/08 (2020.01); H05B 45/10 (2020.01); H02M 1/08 (2006.01); H05B 45/37 (2020.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H05B 45/10 (2020.01); H02M 1/08 (2013.01); H05B 45/37 (2020.01); H02M 2001/0009 (2013.01);
Abstract
A light emitting diode driving device and a light emitting diode backlight module are provided. A current is provided to a filter circuit by a controllable current source controlled by a dimming signal, so that the filter circuit generates a corresponding dimming voltage to control current flowing through a LED unit to dim the LED unit.