发明授权
- 专利标题： LED device, LED driving circuit and method
- 专利标题（中）： LED装置，LED驱动电路及方法
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申请号： US14058951申请日： 2013-10-21
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公开(公告)号： US09119249B2公开(公告)日： 2015-08-25
- 发明人: Hsing-Chien Yang , Wen-Hsin Cheng , Ying-Hao Hsu , Lan-Ting Hsu , Tsung-Hau Chang
- 申请人： NOVATEK MICROELECTRONICS CORP.
- 申请人地址： TW Hsinchu
- 专利权人： NOVATEK MICROELECTRONICS CORP.
- 当前专利权人： NOVATEK MICROELECTRONICS CORP.
- 当前专利权人地址： TW Hsinchu
- 代理机构： Rabin & Berdo, P.C.
- 优先权： TW100135367A 20110929
- 主分类号： H05B37/02
- IPC分类号： H05B37/02 ; H05B33/08
摘要：
A light-emitting diode (LED) driving circuit includes an LED control circuit and a power stage circuit. The LED control circuit shifts an input pulse width modulation (PWM) signal toward a higher frequency direction in a frequency domain to generate an output PWM signal having a duty cycle substantially the same as a duty cycle of the input PWM signal. The power stage circuit outputs an LED driving current according to the output PWM signal.
公开/授权文献
- US20140042917A1 LED DEVICE, LED DRIVING CIRCUIT AND METHOD 公开/授权日：2014-02-13
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