Invention Grant
- Patent Title: Driving circuit for driving light emitting diodes and dimmer
- Patent Title (中): 用于驱动发光二极管和调光器的驱动电路
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Application No.: US12880161Application Date: 2010-09-13
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Publication No.: US08217584B2Publication Date: 2012-07-10
- Inventor: Chien-Yang Chen , Po-Kun Hsieh , Tung-Hsin Lan , Ming-Chang Lin
- Applicant: Chien-Yang Chen , Po-Kun Hsieh , Tung-Hsin Lan , Ming-Chang Lin
- Applicant Address: TW Bade, Taoyuan
- Assignee: Chunghwa Picture Tubes, Ltd.
- Current Assignee: Chunghwa Picture Tubes, Ltd.
- Current Assignee Address: TW Bade, Taoyuan
- Agent Winston Hsu; Scott Margo
- Priority: TW99124149A 20100722
- Main IPC: H05B41/16
- IPC: H05B41/16
Abstract:
A power supply unit provides a voltage, and a driving current to a series of light emitting diodes. A dimming unit adjusts a duty cycle of an original dimming signal to generate a dimming signal according to the driving current and an ideal current. A current sink coupled to the series of light emitting diodes adjusts a duty cycle of the driving current according to the dimming signal.
Public/Granted literature
- US20120019154A1 DRIVING CIRCUIT FOR DRIVING LIGHT EMITTING DIODES AND DIMMER Public/Granted day:2012-01-26
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