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1. 发明授权

US09439259B2 LED backlight driving circuit for LCD panels 有权
标题翻译： LED背光驱动电路用于LCD面板
公开(公告)号：US09439259B2
公开(公告)日：2016-09-06
申请号：US13354769
申请日：2012-01-20
申请人： Junichi Hagino , Shingo Haruta
发明人： Junichi Hagino , Shingo Haruta
IPC分类号： G09G3/36 , H05B33/08 , G05F1/40 , G02F1/1335
CPC分类号： H05B33/0848 , G02F2001/133612 , G05F1/40 , H05B33/0812 , Y02B20/345
摘要： A current drive circuit capable of reducing the influence of temperature variation or individual deviation is provided. An output transistor is a PNP bipolar transistor, and has an emitter connected to a cathode of an LED string. A current control resistor is disposed between a collector of the output transistor and a ground terminal. An output terminal of an error amplifier is connected to a base of the output transistor, a first input terminal of the error amplifier is connected to a connection point of the output transistor and the current control resistor, and a reference voltage is applied to a second input terminal of the error amplifier. The error amplifier enables a sink current sunk from the output terminal to flow to the current control resistor.
摘要翻译：提供能够减少温度变化或个体偏差的影响的电流驱动电路。输出晶体管是PNP双极晶体管，并且具有连接到LED串的阴极的发射极。电流控制电阻器设置在输出晶体管的集电极和接地端子之间。误差放大器的输出端连接到输出晶体管的基极，误差放大器的第一输入端连接到输出晶体管和电流控制电阻的连接点，参考电压施加到第二误差放大器的输入端。误差放大器使得从输出端子下降的吸收电流流向电流控制电阻。

2. 发明授权

US08502481B2 Phase shift controller 有权
标题翻译：相移控制器
公开(公告)号：US08502481B2
公开(公告)日：2013-08-06
申请号：US13173236
申请日：2011-06-30
申请人： Junichi Hagino , Shingo Haruta , Toshikazu Takei
发明人： Junichi Hagino , Shingo Haruta , Toshikazu Takei
IPC分类号： H05B37/00
CPC分类号： G09G3/342 , G09G2320/064 , H05B33/0815 , H05B33/0827 , Y02B20/346 , Y02B20/347
摘要： A positive counter starts counting, starting with an initial value, upon receiving a positive edge of a dimming pulse signal. A negative edge counter starts counting, starting with an initial value, upon receiving a negative edge of the dimming pulse signal. For each i-th (2≦i≦n) channel, the phase shift amount is calculated by multiplying a period count value that indicates the period of the dimming pulse signal by (i−1)/n. When the count value matches the phase shift amount, a burst control signal is switched to a first level. When the count value matches the phase shift amount, the burst control signal is switched to a second level.
摘要翻译：正计数器在接收到调光脉冲信号的上升沿时，从初始值开始计数。负边沿计数器在接收到调光脉冲信号的负沿时，以初始值开始计数。对于每个第i（2 @ i）个通道，通过将指示调光脉冲信号的周期的周期计数值乘以（i-1）/ n来计算相移量。当计数值与相移量匹配时，突发控制信号被切换到第一电平。当计数值与相移量匹配时，脉冲串控制信号被切换到第二电平。

3. 发明授权

US08492982B2 Current drive circuit for light emitting diode 有权
标题翻译：发光二极管的电流驱动电路
公开(公告)号：US08492982B2
公开(公告)日：2013-07-23
申请号：US13090357
申请日：2011-04-20
申请人： Junichi Hagino , Shingo Haruta
发明人： Junichi Hagino , Shingo Haruta
IPC分类号： H05B37/02
CPC分类号： H05B33/0818 , G09G3/342 , G09G2320/064 , G09G2330/02 , H05B33/0827
摘要： A pulse width modulated dimming pulse signal PWM is input to a control input terminal P5. A standby terminal P6 receives a standby signal STB that indicates switching between a standby state and an operating state of a current drive circuit 8. A burst dimming terminal BS is provided to each of eight respective channels. Each burst dimming terminal BS receives a voltage at one terminal (cathode) of a corresponding LED string 6. When the voltage level of the standby signal STB is included in a first voltage range, a burst controller 9 is set to an all channel common mode, and when it is included in a second voltage range, the mode is set to a phase shift mode φSHIFT. The burst controller 9 set to the phase shift mode φSHIFT automatically sets the phase shift angle according to the number of connected LED strings 6.
摘要翻译：脉宽调制调光脉冲信号PWM输入到控制输入端P5。备用端子P6接收指示在待机状态和当前驱动电路8的工作状态之间切换的待机信号STB。突发调光终端BS被提供给八个相应通道中的每一个。每个突发调光终端BS在对应的LED串6的一个端子（阴极）处接收电压。当待机信号STB的电压电平包括在第一电压范围内时，突发控制器9被设置为全通道共模，并且当其被包括在第二电压范围中时，该模式被设置为相移模式phiSHIFT。设置为相移模式phiSHIFT的突发控制器9根据连接的LED串6的数量自动设置相移角。

4. 发明申请

US20110279043A1 CURRENT DRIVE CIRCUIT FOR LIGHT EMITTING DIODE 有权
标题翻译：用于发光二极管的电流驱动电路
公开(公告)号：US20110279043A1
公开(公告)日：2011-11-17
申请号：US13090357
申请日：2011-04-20
申请人： Junichi HAGINO , Shingo HARUTA
发明人： Junichi HAGINO , Shingo HARUTA
IPC分类号： H05B37/02
CPC分类号： H05B33/0818 , G09G3/342 , G09G2320/064 , G09G2330/02 , H05B33/0827
摘要： A pulse width modulated dimming pulse signal PWM is input to a control input terminal P5. A standby terminal P6 receives a standby signal STB that indicates switching between a standby state and an operating state of a current drive circuit 8. A burst dimming terminal BS is provided to each of eight respective channels. Each burst dimming terminal BS receives a voltage at one terminal (cathode) of a corresponding LED string 6. When the voltage level of the standby signal STB is included in a first voltage range, a burst controller 9 is set to an all channel common mode, and when it is included in a second voltage range, the mode is set to a phase shift mode φSHIFT. The burst controller 9 set to the phase shift mode φSHIFT automatically sets the phase shift angle according to the number of connected LED strings 6.
摘要翻译：脉宽调制调光脉冲信号PWM输入到控制输入端P5。备用端子P6接收指示在待机状态和当前驱动电路8的工作状态之间切换的待机信号STB。突发调光终端BS被提供给八个相应通道中的每一个。每个突发调光终端BS在对应的LED串6的一个端子（阴极）处接收电压。当待机信号STB的电压电平包括在第一电压范围内时，突发控制器9被设置为全通道共模，并且当其被包括在第二电压范围中时，该模式被设置为相移模式＆SHIFT。突发控制器9设置为相移模式，SHIFT根据连接的LED串6的数量自动设置相移角。

5. 发明申请

US20120188487A1 DRIVE CIRCUIT FOR LIGHT-EMITTING DIODE, AND LIGHT-EMITTING DEVICE AND ELECTRONIC DEVICE USING THE SAME 有权
标题翻译：用于发光二极管的驱动电路，以及使用该发光二极管的发光器件和电子器件
公开(公告)号：US20120188487A1
公开(公告)日：2012-07-26
申请号：US13354769
申请日：2012-01-20
申请人： Junichi HAGINO , Shingo HARUTA
发明人： Junichi HAGINO , Shingo HARUTA
IPC分类号： G02F1/13357 , H05B37/00
CPC分类号： H05B33/0848 , G02F2001/133612 , G05F1/40 , H05B33/0812 , Y02B20/345
摘要： A current drive circuit capable of reducing the influence of temperature variation or individual deviation is provided. An output transistor is a PNP bipolar transistor, and has an emitter connected to a cathode of an LED string. A current control resistor is disposed between a collector of the output transistor and a ground terminal. An output terminal of an error amplifier is connected to a base of the output transistor, a first input terminal of the error amplifier is connected to a connection point of the output transistor and the current control resistor, and a reference voltage is applied to a second input terminal of the error amplifier. The error amplifier enables a sink current sunk from the output terminal to flow to the current control resistor.
摘要翻译：提供能够减少温度变化或个体偏差的影响的电流驱动电路。输出晶体管是PNP双极晶体管，并且具有连接到LED串的阴极的发射极。电流控制电阻器设置在输出晶体管的集电极和接地端子之间。误差放大器的输出端连接到输出晶体管的基极，误差放大器的第一输入端连接到输出晶体管和电流控制电阻的连接点，参考电压施加到第二误差放大器的输入端。误差放大器使得从输出端子下降的吸收电流流向电流控制电阻。

6. 发明申请

US20120001557A1 PHASE SHIFT CONTROLLER 有权
标题翻译：相移控制器
公开(公告)号：US20120001557A1
公开(公告)日：2012-01-05
申请号：US13173236
申请日：2011-06-30
申请人： Junichi Hagino , Shingo Haruta , Toshikazu Takei
发明人： Junichi Hagino , Shingo Haruta , Toshikazu Takei
IPC分类号： H05B37/02
CPC分类号： G09G3/342 , G09G2320/064 , H05B33/0815 , H05B33/0827 , Y02B20/346 , Y02B20/347
摘要： A positive counter starts counting, starting with an initial value, upon receiving a positive edge of a dimming pulse signal. A negative edge counter starts counting, starting with an initial value, upon receiving a negative edge of the dimming pulse signal. For each i-th (2≦i≦n) channel, the phase shift amount is calculated by multiplying a period count value that indicates the period of the dimming pulse signal by (i−1)/n. When the count value matches the phase shift amount, a burst control signal is switched to a first level. When the count value matches the phase shift amount, the burst control signal is switched to a second level.
摘要翻译：正计数器在接收到调光脉冲信号的上升沿时，从初始值开始计数。负边沿计数器在接收到调光脉冲信号的负沿时，以初始值开始计数。对于每个第i（2＆nlE; i＆nlE; n）个通道，通过将指示调光脉冲信号的周期的周期计数值乘以（i-1）/ n来计算相移量。当计数值与相移量匹配时，突发控制信号被切换到第一电平。当计数值与相移量匹配时，脉冲串控制信号被切换到第二电平。

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