Invention Grant
US08547032B2 Method and device for driving light-emitting diode by alternating current input voltage
有权
通过交流输入电压驱动发光二极管的方法和装置
- Patent Title: Method and device for driving light-emitting diode by alternating current input voltage
- Patent Title (中): 通过交流输入电压驱动发光二极管的方法和装置
-
Application No.: US12880143Application Date: 2010-09-12
-
Publication No.: US08547032B2Publication Date: 2013-10-01
- Inventor: Chen-Ming Hung , I-Fong Chen , Maung Maung Win , Chih-Yuan Hsieh
- Applicant: Chen-Ming Hung , I-Fong Chen , Maung Maung Win , Chih-Yuan Hsieh
- Applicant Address: TW Hsinchu Science Park, Hsin-Chu
- Assignee: NOVATEK Microelectronics Corp.
- Current Assignee: NOVATEK Microelectronics Corp.
- Current Assignee Address: TW Hsinchu Science Park, Hsin-Chu
- Agent Winston Hsu; Scott Margo
- Priority: TW99114503A 20100506
- Main IPC: H05B41/16
- IPC: H05B41/16
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.
Public/Granted literature
- US20110273113A1 Method and Device for Driving Light-Emitting Diode Public/Granted day:2011-11-10
Information query
