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1. 发明申请

US20110267387A1 CIRCUIT AND METHOD FOR DRIVING A LIGHT EMITTING DIODE FOR A BACKLIGHT, AND BACKLIGHT DRIVING APPARATUS USING THE SAME 审中-公开
标题翻译：用于驱动背光的发光二极管的电路和方法，以及使用其的背光驱动装置
公开(公告)号：US20110267387A1
公开(公告)日：2011-11-03
申请号：US13049705
申请日：2011-03-16
申请人： Seung-beom Baik , Mi-jin Kim , Eung-suen Kim , Du-su Shin
发明人： Seung-beom Baik , Mi-jin Kim , Eung-suen Kim , Du-su Shin
IPC分类号： G09G5/10 , G09G3/30
CPC分类号： G09G3/3406 , G09G2320/0247 , G09G2320/064 , G09G2360/145
摘要： A circuit and method for driving a light emitting diode for a backlight, and a backlight driving apparatus using the same is provided. A circuit for driving a light emitting diode (LED) for a backlight includes a filtering unit configured to receive a pulse width modulation (PWM) signal and remove noise of a predetermined band, a duty stabilization unit configured to stabilize a duty of a PWM signal filtered by the filtering unit, a dimming signal generation unit configured to generate a dimming signal based on a PWM signal stabilized by the duty stabilization unit, and an LED driving unit configured to drive the LED for the backlight based on the dimming signal generated by the dimming signal generation unit.
摘要翻译：提供了用于驱动用于背光的发光二极管的电路和方法，以及使用其的背光驱动装置。用于驱动用于背光的发光二极管（LED）的电路包括被配置为接收脉宽调制（PWM）信号并去除预定频带的噪声的滤波单元，配置成稳定PWM信号占空比的占空比稳定单元调光信号生成单元，被配置为基于由占空比稳定单元稳定的PWM信号生成调光信号，以及LED驱动单元，其被配置为基于由所述滤波单元生成的调光信号驱动用于背光的LED 调光信号发生单元。

2. 发明申请

US20120153848A1 REFERENCE VOLTAGE GENERATING CIRCUIT AND LED DRIVER CIRCUIT HAVING THE SAME THEREIN 有权
标题翻译：具有相同电压的基准电压发生电路和LED驱动电路
公开(公告)号：US20120153848A1
公开(公告)日：2012-06-21
申请号：US13316897
申请日：2011-12-12
申请人： Du-su Shin , Shane Baik , Chang-sik Lim
发明人： Du-su Shin , Shane Baik , Chang-sik Lim
IPC分类号： H05B37/02
CPC分类号： G09G3/3406 , G09G2320/062 , G09G2320/064 , G09G2330/00 , G09G2330/12
摘要： A reference voltage generating circuit used for a light-emitting diode (LED) driver circuit and a light-emitting diode (LED) driver circuit are provided. A reference voltage generating circuit used for a light-emitting diode (LED) driver circuit includes a voltage measurer configured to sequentially measure feedback voltages of a plurality of LED arrays, the LED arrays being connected to one another in parallel, a quantizer configured to search for one of the plurality of LED arrays having a lowest feedback voltage of the measured feedback voltages, a comparator configured to compare an output of the voltage measurer with a preset comparison voltage to generate a reference voltage, and a timing controller configured to control the comparator to output the generated reference voltage corresponding to the one of the plurality of LED arrays.
摘要翻译：提供了用于发光二极管（LED）驱动电路和发光二极管（LED）驱动电路的参考电压产生电路。用于发光二极管（LED）驱动电路的参考电压产生电路包括：电压测量器，被配置为顺序测量多个LED阵列的反馈电压，所述LED阵列彼此并联连接;量化器，被配置为搜索对于所述多个LED阵列中的一个具有所测量的反馈电压的最低反馈电压的比较器，比较器，被配置为将所述电压测量器的输出与预设的比较电压进行比较以产生参考电压;以及定时控制器，被配置为控制所述比较器以输出与多个LED阵列中的一个对应的所生成的参考电压。

3. 发明授权

US08686652B2 Reference voltage generating circuit and LED driver circuit having the same therein 有权
标题翻译：参考电压发生电路和LED驱动电路具有相同的功能
公开(公告)号：US08686652B2
公开(公告)日：2014-04-01
申请号：US13316897
申请日：2011-12-12
申请人： Du-su Shin , Shane Baik , Chang-sik Lim
发明人： Du-su Shin , Shane Baik , Chang-sik Lim
IPC分类号： H05B37/02
CPC分类号： G09G3/3406 , G09G2320/062 , G09G2320/064 , G09G2330/00 , G09G2330/12
摘要： A reference voltage generating circuit used for a light-emitting diode (LED) driver circuit and a light-emitting diode (LED) driver circuit are provided. A reference voltage generating circuit used for a light-emitting diode (LED) driver circuit includes a voltage measurer configured to sequentially measure feedback voltages of a plurality of LED arrays, the LED arrays being connected to one another in parallel, a quantizer configured to search for one of the plurality of LED arrays having a lowest feedback voltage of the measured feedback voltages, a comparator configured to compare an output of the voltage measurer with a preset comparison voltage to generate a reference voltage, and a timing controller configured to control the comparator to output the generated reference voltage corresponding to the one of the plurality of LED arrays.
摘要翻译：提供了用于发光二极管（LED）驱动电路和发光二极管（LED）驱动电路的参考电压产生电路。用于发光二极管（LED）驱动电路的参考电压产生电路包括：电压测量器，被配置为顺序测量多个LED阵列的反馈电压，所述LED阵列彼此并联连接;量化器，被配置为搜索对于所述多个LED阵列中的一个具有所测量的反馈电压的最低反馈电压的比较器，比较器，被配置为将所述电压测量器的输出与预设的比较电压进行比较以产生参考电压;以及定时控制器，被配置为控制所述比较器以输出与多个LED阵列中的一个对应的所生成的参考电压。

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