公开(公告)号：US08653749B2

公开(公告)日：2014-02-18

申请号：US13108535

申请日：2011-05-16

申请人： Bo Hyun Hwang ,  Jung Sun Kwon ,  Seung Kon Kong ,  Jung Hyun Kim ,  Jae Shin Lee ,  Joon Youp Sung

发明人： Bo Hyun Hwang ,  Jung Sun Kwon ,  Seung Kon Kong ,  Jung Hyun Kim ,  Jae Shin Lee ,  Joon Youp Sung

IPC分类号： H05B37/02

CPC分类号： H05B33/0827 ,  H05B33/0818

摘要： Disclosed herein is a light emitting diode (LED) driving device for driving a multi-channel LED element or an LED array for each channel, the LED driving device including: a constant current driver driving currents flowing in each channel; and a minimum voltage selector receiving voltage levels of each channel and selecting a minimum voltage level to thereby feedback the selected minimum voltage level to the constant current driver, wherein matching characteristics of currents flowing in each channel is improved and a size of an integrated circuit (IC) chip is also reduced as compared to a case according to the related art, thereby making it possible to reduce a production cost and satisfy the trend of miniaturization of the chip, while solving a performance deterioration problem due to deterioration of the matching of the currents between the channels.

摘要翻译： 本发明公开了一种用于驱动每个通道的多通道LED元件或LED阵列的发光二极管（LED）驱动装置，该LED驱动装置包括：驱动在每个通道中流动的电流的恒流驱动器; 以及最小电压选择器，其接收每个通道的电压电平并选择最小电压电平，从而将所选择的最小电压电平反馈给恒流驱动器，其中提高了在每个通道中流动的电流的匹配特性，并且集成电路 IC）芯片与现有技术的情况相比也降低，从而可以降低生产成本并满足芯片小型化的趋势，同时解决由于匹配引起的性能劣化问题 通道之间的电流。

公开(公告)号：US08525437B2

公开(公告)日：2013-09-03

申请号：US13028618

申请日：2011-02-16

申请人： Joon Youp Sung ,  Jae Shin Lee ,  Seung Kon Kong ,  Jung Sun Kwon ,  Jung Hyun Kim ,  Bo Hyun Hwang

发明人： Joon Youp Sung ,  Jae Shin Lee ,  Seung Kon Kong ,  Jung Sun Kwon ,  Jung Hyun Kim ,  Bo Hyun Hwang

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0824 ,  Y02B20/347

摘要： Disclosed herein is a device for controlling current of an LED including a constant current generator, a current mirror, and a current amplifier, the device controlling current of an LED, comprising: a selector outputting an L signal or an H signal according to an input control signal; and a current changing unit formed by connecting at least one switching unit in parallel, the switching unit including a transistor and a switch connected to the transistor in series. The device for controlling current of an LED adjusts current supplied to the current amplifier using a SEL input without an effect of a noise, thereby making it possible to change the current of the LED without separately changing a resistor.

摘要翻译： 本发明公开了一种用于控制包括恒流发电机，电流镜和电流放大器的LED的电流的装置，所述装置控制LED的电流，包括：选择器，根据输入端输出L信号或H信号 控制信号; 以及通过并联连接至少一个开关单元形成的电流改变单元，所述开关单元包括晶体管和串联连接到所述晶体管的开关。 用于控制LED的电流的装置使用SEL输入来调节提供给电流放大器的电流而不会产生噪声，从而可以在不分开改变电阻器的情况下改变LED的电流。

公开(公告)号：US08476938B2

公开(公告)日：2013-07-02

申请号：US13027689

申请日：2011-02-15

申请人： Joon Youp Sung ,  Jung Sun Kwon ,  Jae Shin Lee ,  Seung Kon Kong ,  Jung Hyun Kim ,  Bo Hyun Hwang

发明人： Joon Youp Sung ,  Jung Sun Kwon ,  Jae Shin Lee ,  Seung Kon Kong ,  Jung Hyun Kim ,  Bo Hyun Hwang

IPC分类号： H03K5/153

CPC分类号： H05B33/0812 ,  H05B33/0896 ,  Y02B20/343 ,  Y02B20/345

摘要： The device for generating three mode signals includes: a voltage setting block including an input terminal receiving three input signals of driving voltage, open, and ground and setting three voltages according to the three input signals; and an output block including two output terminals and a second node B receiving the three voltages from the voltage setting block, and outputting three combined signals by comparing an input voltage with a reference voltage, whereby only a small number of resistors and amplifiers generates three mode signals to further reduce the chip size than the related art and the external power source is not required to solve the problems of the related art due to noise.

摘要翻译： 用于产生三个模式信号的装置包括：电压设置块，包括接收驱动电压，开路和地线的三个输入信号的输入端，并根据三个输入信号设置三个电压; 以及包括两个输出端子和从电压设定块接收三个电压的第二节点B的输出块，并且通过将输入电压与参考电压进行比较来输出三个组合信号，由此只有少数电阻器和放大器产生三个模式 信号以进一步减小芯片尺寸，并且由于噪声而不需要外部电源来解决现有技术的问题。

公开(公告)号：US08541953B2

公开(公告)日：2013-09-24

申请号：US13109535

申请日：2011-05-17

申请人： Bo Hyun Hwang ,  Jung Sun Kwon ,  Jung Hyun Kim ,  Seung Kon Kong ,  Jae Shin Lee ,  Joon Youp Sung

发明人： Bo Hyun Hwang ,  Jung Sun Kwon ,  Jung Hyun Kim ,  Seung Kon Kong ,  Jae Shin Lee ,  Joon Youp Sung

IPC分类号： H05B37/02

CPC分类号： H05B33/0827 ,  H05B33/0842

摘要： Disclosed herein is a light emitting diode (LED) driving device for driving a multi-channel LED element or an LED array for each channel, the LED driving device including: a constant current driver driving currents flowing in each channel; a first switching unit selectively feeding-back voltage levels of each channel; and a switching controller controlling the turn on/off of the first switching unit, wherein matching characteristics of currents flowing in each channel is improved and a size of an integrated circuit (IC) chip is also reduced as compared to a case according to the related art, thereby making it possible to reduce a production cost and satisfy the trend of miniaturization of the chip, while solving a performance deterioration problem due to degradation of the matching of the currents between the channels.

摘要翻译： 本发明公开了一种用于驱动每个通道的多通道LED元件或LED阵列的发光二极管（LED）驱动装置，该LED驱动装置包括：驱动在每个通道中流动的电流的恒流驱动器; 第一开关单元选择性地反馈每个通道的电压电平; 以及控制第一开关单元的接通/断开的开关控制器，其中改善了在每个通道中流动的电流的匹配特性，并且与根据相关的情况相比，集成电路（IC）芯片的尺寸也降低 从而可以降低生产成本并满足芯片小型化的趋势，同时解决由于通道之间的电流匹配劣化引起的性能劣化问题。

公开(公告)号：US20120212152A1

公开(公告)日：2012-08-23

申请号：US13108535

申请日：2011-05-16

申请人： Bo Hyun HWANG ,  Jung Sun Kwon ,  Seung Kon Kong ,  Jung Hyun Kim ,  Jae Shin Lee ,  Joon Youp Sung

发明人： Bo Hyun HWANG ,  Jung Sun Kwon ,  Seung Kon Kong ,  Jung Hyun Kim ,  Jae Shin Lee ,  Joon Youp Sung

IPC分类号： H05B37/02

CPC分类号： H05B33/0827 ,  H05B33/0818

摘要： Disclosed herein is a light emitting diode (LED) driving device for driving a multi-channel LED element or an LED array for each channel, the LED driving device including: a constant current driver driving currents flowing in each channel; and a minimum voltage selector receiving voltage levels of each channel and selecting a minimum voltage level to thereby feedback the selected minimum voltage level to the constant current driver, wherein matching characteristics of currents flowing in each channel is improved and a size of an integrated circuit (IC) chip is also reduced as compared to a case according to the related art, thereby making it possible to reduce a production cost and satisfy the trend of miniaturization of the chip, while solving a performance deterioration problem due to deterioration of the matching of the currents between the channels.

摘要翻译： 本发明公开了一种用于驱动每个通道的多通道LED元件或LED阵列的发光二极管（LED）驱动装置，该LED驱动装置包括：驱动在每个通道中流动的电流的恒流驱动器; 以及最小电压选择器，其接收每个通道的电压电平并选择最小电压电平，从而将所选择的最小电压电平反馈给恒流驱动器，其中提高了在每个通道中流动的电流的匹配特性，并且集成电路 IC）芯片与现有技术的情况相比也降低，从而可以降低生产成本并满足芯片小型化的趋势，同时解决由于匹配引起的性能劣化问题 通道之间的电流。

公开(公告)号：US20120068619A1

公开(公告)日：2012-03-22

申请号：US13028618

申请日：2011-02-16

申请人： Joon Youp Sung ,  Jae Shin Lee ,  Seung Kon Kong ,  Jung Sun Kwon ,  Jung Hyun Kim ,  Bo Hyun Hwang

发明人： Joon Youp Sung ,  Jae Shin Lee ,  Seung Kon Kong ,  Jung Sun Kwon ,  Jung Hyun Kim ,  Bo Hyun Hwang

IPC分类号： H05B37/02

CPC分类号： H05B33/0815 ,  H05B33/0824 ,  Y02B20/347

摘要： Disclosed herein is a device for controlling current of an LED including a constant current generator, a current mirror, and a current amplifier, the device controlling current of an LED, comprising: a selector outputting an L signal or an H signal according to an input control signal; and a current changing unit formed by connecting at least one switching unit in parallel, the switching unit including a transistor and a switch connected to the transistor in series. The device for controlling current of an LED adjusts current supplied to the current amplifier using a SEL input without an effect of a noise, thereby making it possible to change the current of the LED without separately changing a resistor.

摘要翻译： 本发明公开了一种用于控制包括恒流发电机，电流镜和电流放大器的LED的电流的装置，所述装置控制LED的电流，包括：选择器，根据输入端输出L信号或H信号 控制信号; 以及通过并联连接至少一个开关单元形成的电流改变单元，所述开关单元包括晶体管和串联连接到所述晶体管的开关。 用于控制LED的电流的装置使用SEL输入来调节提供给电流放大器的电流而不会产生噪声，从而可以在不分开改变电阻器的情况下改变LED的电流。

公开(公告)号：US08519637B2

公开(公告)日：2013-08-27

申请号：US13069558

申请日：2011-03-23

申请人： Jung Hyun Kim ,  Bo Hyun Hwang ,  Jung Sun Kwon ,  Seung Kon Kong ,  Jae Shin Lee ,  Joon Youp Sung

发明人： Jung Hyun Kim ,  Bo Hyun Hwang ,  Jung Sun Kwon ,  Seung Kon Kong ,  Jae Shin Lee ,  Joon Youp Sung

IPC分类号： H05B37/02

CPC分类号： H05B33/0842 ,  H05B33/0818 ,  H05B33/0824 ,  Y02B20/346

摘要： There is provided a digital PWM generator according to a first exemplary embodiment of the present invention including: an A/D converter dividing a predetermined reference voltage into a plurality of sections corresponding to a predetermined first set value, searching a section to which the magnitude of an input voltage Vin corresponds, among the plurality of sections, and converting a value corresponding to the searched section into a digital signal; a frequency selector providing a counting number by counting a predetermined high-speed counting clock during a one-cycle section of a predetermined reference clock; and a PWM signal generator converting the digital signal from the A/D converter into a ratio value corresponding to a ratio for the reference voltage and generating a PWM signal having a controlled duty ratio of the reference clock by using the ratio value and the counting number from the frequency selector.

摘要翻译： 提供了根据本发明的第一示例性实施例的数字PWM发生器，包括：A / D转换器，将预定的参考电压分成对应于预定的第一设定值的多个部分， 在多个部分中，输入电压Vin对应于将与搜索到的部分相对应的值转换为数字信号; 频率选择器，通过在预定参考时钟的一个周期段内对预定的高速计数时钟进行计数来提供计数数; 以及PWM信号发生器，其将来自A / D转换器的数字信号转换成与参考电压的比率相对应的比值，并通过使用比值和计数数来产生具有参考时钟的受控占空比的PWM信号 从频率选择器。

公开(公告)号：US08421365B2

公开(公告)日：2013-04-16

申请号：US12770953

申请日：2010-04-30

申请人： Seung Kon Kong ,  Jae Shin Lee ,  Jung Hyun Kim ,  Jung Sun Kwon ,  Bo Hyun Hwang

发明人： Seung Kon Kong ,  Jae Shin Lee ,  Jung Hyun Kim ,  Jung Sun Kwon ,  Bo Hyun Hwang

IPC分类号： H05B39/02

CPC分类号： H05B33/0827 ,  H05B33/0818

摘要： An apparatus for driving a light emitting device (LED) is provided. The apparatus for driving the LED includes a first driving control element, a first current detection unit, a first effective value detection unit, a first reference signal generation unit, and a first comparison unit. The first driving control element controls a current flowing through a first LED channel, in response to a first pulse-width modulated control signal. The first current detection unit detects the current flowing through the first LED channel. The first effective value detection unit detects an effective value of the current detected by the first current detection unit. The first reference signal generation unit generates a preset reference signal having a sawtooth waveform. The first comparison unit compares the reference signal from the first reference signal generation unit with the effective value from the first effective value detection unit.

摘要翻译： 提供了一种用于驱动发光器件（LED）的装置。 用于驱动LED的装置包括第一驱动控制元件，第一电流检测单元，第一有效值检测单元，第一参考信号生成单元和第一比较单元。 响应于第一脉冲宽度调制控制信号，第一驱动控制元件控制流过第一LED通道的电流。 第一电流检测单元检测流过第一LED通道的电流。 第一有效值检测单元检测由第一电流检测单元检测到的电流的有效值。 第一参考信号产生单元产生具有锯齿波形的预设参考信号。 第一比较单元将来自第一参考信号生成单元的参考信号与来自第一有效值检测单元的有效值进行比较。

公开(公告)号：US08344662B2

公开(公告)日：2013-01-01

申请号：US12885903

申请日：2010-09-20

申请人： Bo Hyun Hwang ,  Jae Shin Lee ,  Jung Hyun Kim ,  Jung Sun Kwon ,  Seung Kon Kong

发明人： Bo Hyun Hwang ,  Jae Shin Lee ,  Jung Hyun Kim ,  Jung Sun Kwon ,  Seung Kon Kong

IPC分类号： G05F1/00

CPC分类号： H02M1/44 ,  H02M3/156 ,  H03K17/162 ,  H05B33/0809

摘要： There is provided a light emitting diode (LED) driver removing signal interference by varying a switching frequency within a preset range. The LED driver includes a power supply section switching input power and supplying driving power to at least one LED; a switching control section controlling the switching of the power supply section according to a clock signal being supplied; and a clock signal generation section supplying the clock signal having a preset variable frequency range to the switching control section.

摘要翻译： 提供了通过在预设范围内改变开关频率来消除信号干扰的发光二极管（LED）驱动器。 所述LED驱动器包括：电源部，切换输入电力，并向至少一个LED提供驱动电力; 切换控制部，根据供给的时钟信号来控制供电部的切换; 以及向切换控制部提供具有预设可变频率范围的时钟信号的时钟信号生成部。

公开(公告)号：US20110156606A1

公开(公告)日：2011-06-30

申请号：US12885903

申请日：2010-09-20

申请人： Bo Hyun HWANG ,  Jae Shin Lee ,  Jung Hyun Kim ,  Jung Sun Kwon ,  Seung Kon Kong

发明人： Bo Hyun HWANG ,  Jae Shin Lee ,  Jung Hyun Kim ,  Jung Sun Kwon ,  Seung Kon Kong

IPC分类号： H05B37/02

CPC分类号： H02M1/44 ,  H02M3/156 ,  H03K17/162 ,  H05B33/0809

摘要： There is provided a light emitting diode (LED) driver removing signal interference by varying a switching frequency within a preset range. The LED driver includes a power supply section switching input power and supplying driving power to at least one LED; a switching control section controlling the switching of the power supply section according to a clock signal being supplied; and a clock signal generation section supplying the clock signal having a preset variable frequency range to the switching control section.

摘要翻译： 提供了通过在预设范围内改变开关频率来消除信号干扰的发光二极管（LED）驱动器。 所述LED驱动器包括：电源部，切换输入电力，并向至少一个LED提供驱动电力; 切换控制部，根据供给的时钟信号来控制供电部的切换; 以及向切换控制部提供具有预设可变频率范围的时钟信号的时钟信号生成部。