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1.发明申请公开(公告)号：US20080180386A1
公开(公告)日：2008-07-31
申请号：US12008797
申请日：2008-01-14
申请人： Chiawei Liao , Xiaoyong Zhang , Jing-Meng Liu
发明人： Chiawei Liao , Xiaoyong Zhang , Jing-Meng Liu
IPC分类号： G09G3/36
CPC分类号： G09G3/3426
摘要： The present invention discloses a backlight control circuit capable of distinguishing an under current condition, comprising: at least one light emission device path having a voltage node; at least one current source for controlling the current amount on the light emission device path; and at least one under current detection circuit for generating a first control signal according to the voltage at the voltage node, wherein when the first control signal changes its state, the under current detection circuit generates a second control signal to change the voltage on the voltage node if the light emission device path is normally connected.
摘要翻译： 本发明公开了一种能够区分欠电流状态的背光控制电路，包括：具有电压节点的至少一个发光器件路径; 至少一个用于控制发光装置路径上的电流量的电流源; 以及至少一个欠电流检测电路，用于根据电压节点处的电压产生第一控制信号，其中当第一控制信号改变其状态时，欠电流检测电路产生第二控制信号以改变电压上的电压 节点，如果发光设备路径正常连接。
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2.发明授权公开(公告)号：US08508464B2
公开(公告)日：2013-08-13
申请号：US12008797
申请日：2008-01-14
申请人： Chiawei Liao , Xiaoyong Zhang , Jing-Meng Liu
发明人： Chiawei Liao , Xiaoyong Zhang , Jing-Meng Liu
CPC分类号： G09G3/3426
摘要： The present invention discloses a backlight control circuit capable of distinguishing an under current condition, comprising: at least one light emission device path having a voltage node; at least one current source for controlling the current amount on the light emission device path; and at least one under current detection circuit for generating a first control signal according to the voltage at the voltage node, wherein when the first control signal changes its state, the under current detection circuit generates a second control signal to change the voltage on the voltage node if the light emission device path is normally connected.
摘要翻译： 本发明公开了一种能够区分欠电流状态的背光控制电路，包括：具有电压节点的至少一个发光器件路径; 至少一个用于控制发光装置路径上的电流量的电流源; 以及至少一个欠电流检测电路，用于根据电压节点处的电压产生第一控制信号，其中当第一控制信号改变其状态时，欠电流检测电路产生第二控制信号以改变电压上的电压 节点，如果发光设备路径正常连接。
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公开(公告)号：US20100301761A1
公开(公告)日：2010-12-02
申请号：US12787599
申请日：2010-05-26
申请人： Chiawei Liao , Jing-Meng Liu , Leng-Nien Hsiu
发明人： Chiawei Liao , Jing-Meng Liu , Leng-Nien Hsiu
IPC分类号： H05B37/02
CPC分类号： H05B33/0818 , Y02B20/346
摘要： The present invention discloses a tail-less LED control circuit, which includes: a power supply stage having an output terminal which provides electrical power to an LED circuit; an output capacitor coupled to the output terminal; an LED driver circuit coupled to the power supply stage for controlling the power supply stage to provide the electrical power to the LED circuit, the LED driver circuit receiving a PWM dimming signal for adjusting brightness of the LED circuit; and a MOSFET switch coupled to the output capacitor in series, the MOSFET switch switching synchronously with the PWM dimming signal to alleviate LED afterglow, wherein the MOSFET switch includes a body diode having an anode-cathode direction against the discharge direction of the output capacitor.
摘要翻译： 本发明公开了一种无尾LED控制电路，其包括：具有向LED电路提供电力的输出端子的电源级; 耦合到所述输出端子的输出电容器; LED驱动器电路，其耦合到所述电源级，用于控制所述电源级以向所述LED电路提供电力，所述LED驱动器电路接收用于调节所述LED电路的亮度的PWM调光信号; 以及耦合到串联的输出电容器的MOSFET开关，MOSFET开关与PWM调光信号同步地切换以减轻LED余辉，其中MOSFET开关包括具有抵抗输出电容器的放电方向的阳极 - 阴极方向的体二极管。
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公开(公告)号：US08319444B2
公开(公告)日：2012-11-27
申请号：US12787599
申请日：2010-05-26
申请人： Chiawei Liao , Jing-Meng Liu , Leng-Nien Hsiu
发明人： Chiawei Liao , Jing-Meng Liu , Leng-Nien Hsiu
IPC分类号： H05B37/00
CPC分类号： H05B33/0818 , Y02B20/346
摘要： The present invention discloses a tail-less LED control circuit, which includes: a power supply stage having an output terminal which provides electrical power to an LED circuit; an output capacitor coupled to the output terminal; an LED driver circuit coupled to the power supply stage for controlling the power supply stage to provide the electrical power to the LED circuit, the LED driver circuit receiving a PWM dimming signal for adjusting brightness of the LED circuit; and a MOSFET switch coupled to the output capacitor in series, the MOSFET switch switching synchronously with the PWM dimming signal to alleviate LED afterglow, wherein the MOSFET switch includes a body diode having an anode-cathode direction against the discharge direction of the output capacitor.
摘要翻译： 本发明公开了一种无尾LED控制电路，其包括：具有向LED电路提供电力的输出端子的电源级; 耦合到所述输出端子的输出电容器; LED驱动器电路，其耦合到所述电源级，用于控制所述电源级以向所述LED电路提供电力，所述LED驱动器电路接收用于调节所述LED电路的亮度的PWM调光信号; 以及耦合到串联的输出电容器的MOSFET开关，MOSFET开关与PWM调光信号同步地切换以减轻LED余辉，其中MOSFET开关包括具有抵抗输出电容器的放电方向的阳极 - 阴极方向的体二极管。
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5.发明授权公开(公告)号：US08044920B2
公开(公告)日：2011-10-25
申请号：US11906511
申请日：2007-10-02
申请人： Chiawei Liao , Jing-Meng Liu
发明人： Chiawei Liao , Jing-Meng Liu
IPC分类号： G09G3/36
CPC分类号： H05B33/0827 , H05B33/0815
摘要： The present invention discloses a backlight control circuit, and a method for controlling light emission devices. The method comprises: providing a plurality of light emission device paths connected in parallel; and setting a total current of the paths connected in parallel to a constant.
摘要翻译： 本发明公开了一种背光控制电路和控制发光装置的方法。 该方法包括：提供并联连接的多个发光装置路径; 并且将并联连接的路径的总电流设定为常数。
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公开(公告)号：US20080094349A1
公开(公告)日：2008-04-24
申请号：US11906477
申请日：2007-10-02
申请人： Chiawei Liao , Jing-Meng Liu
发明人： Chiawei Liao , Jing-Meng Liu
IPC分类号： G09G3/36
CPC分类号： H05B33/089 , G02F1/133603 , G02F2001/133612
摘要： The present invention discloses a backlight control circuit, comprising: a voltage supply circuit for receiving an input voltage and generating an output voltage under control by a control signal; at least one voltage comparison path respectively coupled to at least one light emission device path; a voltage operative amplifier circuit for generating the control signal according to a lowest voltage on the at least one voltage comparison path; and at least one under current detection circuit for detecting whether a corresponding one of the at least one light emission device path is in an under current status, whereby when anyone of the under current detection circuits detects the under current status, it sends an exclusion signal excluding a corresponding one of the at least one voltage comparison path from being an effective input of the voltage operative amplifier.
摘要翻译： 本发明公开了一种背光控制电路，包括：电压供给电路，用于接收输入电压，并通过控制信号控制输出电压; 至少一个电压比较路径分别耦合到至少一个发光器件路径; 电压操作放大器电路，用于根据所述至少一个电压比较路径上的最低电压产生所述控制信号; 以及至少一个欠电流检测电路，用于检测所述至少一个发光器件路径中的相应一个发光器件路径是否处于低电流状态，由此当所述欠电流检测电路中的任何一个检测到当前状态时，发送排除信号 不包括所述至少一个电压比较路径中的相应一个电压作为所述电压运算放大器的有效输入。
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公开(公告)号：US20080094007A1
公开(公告)日：2008-04-24
申请号：US11906511
申请日：2007-10-02
申请人： Chiawei Liao , Jing-Meng Liu
发明人： Chiawei Liao , Jing-Meng Liu
IPC分类号： H05B41/36
CPC分类号： H05B33/0827 , H05B33/0815
摘要： The present invention discloses a backlight control circuit, and a method for controlling light emission devices. The method comprises: providing a plurality of light emission device paths connected in parallel; and setting a total current of the paths connected in parallel to a constant.
摘要翻译： 本发明公开了一种背光控制电路和控制发光装置的方法。 该方法包括：提供并联连接的多个发光装置路径; 并且将并联连接的路径的总电流设置为常数。
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公开(公告)号：US09072137B2
公开(公告)日：2015-06-30
申请号：US12008798
申请日：2008-01-14
申请人： Chiawei Liao , Jing-Meng Liu
发明人： Chiawei Liao , Jing-Meng Liu
CPC分类号： H05B33/0845 , G09G3/3406 , G09G2330/04 , H05B33/0812 , H05B33/0827 , H05B33/089 , Y02B20/345
摘要： The present invention discloses a backlight control circuit with flexible configuration, comprising: a light emitting device path; a current source for controlling the current amount on the light emitting device path, the current source receiving a relatively high reference voltage in a first state, and receiving a relatively low reference voltage in a second state; and a current source control circuit for controlling the current source, whereby when the light emitting device path is in normal use, the current source is set to the first state, and when the light emitting device path is not in normal use, the current source is set to the second state.
摘要翻译： 本发明公开了一种具有柔性配置的背光控制电路，包括：发光器件路径; 用于控制发光器件路径上的电流量的电流源，电流源在第一状态下接收相对高的参考电压，并且在第二状态下接收相对低的参考电压; 以及用于控制电流源的电流源控制电路，由此当正常使用发光器件路径时，将电流源设置为第一状态，并且当发光器件路径不正常使用时，电流源 被设置为第二状态。
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9.发明授权Light emitting device array driver circuit and current splitter circuit and method of splitting current therefor 有权发光元件阵列驱动电路及分流电路及其分流电流的方法公开(公告)号：US08941325B2
公开(公告)日：2015-01-27
申请号：US13226091
申请日：2011-09-06
申请人： Jing-Meng Liu , Chiawei Liao
发明人： Jing-Meng Liu , Chiawei Liao
CPC分类号： H05B33/0815 , G09G3/342 , G09G2330/021 , H05B33/0827 , Y02B20/347
摘要： The present invention discloses a current splitter circuit for splitting a supply current to multiple light emitting device strings of a light emitting device array. The current splitter circuit includes: a minimum selector circuit coupled to the multiple light emitting device strings to generate a minimum signal which indicates a minimum voltage of the light emitting device strings; and multiple current source circuits each including a first current source end coupled to a corresponding light emitting device string, a second current source end coupled to ground, and a current source control end receiving a current control signal related to the minimum signal, so as to control currents through the corresponding light emitting device string.
摘要翻译： 本发明公开了一种用于将电源电流分离到发光器件阵列的多个发光器件串的电流分离器电路。 当前的分路器电路包括：耦合到多个发光器件串的最小选择器电路，以产生指示发光器件串的最小电压的最小信号; 以及多个电流源电路，每个电流源电路包括耦合到对应的发光器件串的第一电流源端，耦合到地的第二电流源端和接收与最小信号相关的电流控制信号的电流源控制端，以便 控制电流通过相应的发光器件串。
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公开(公告)号：US20150257228A1
公开(公告)日：2015-09-10
申请号：US14718045
申请日：2015-05-20
申请人： Chiawei Liao , Jing-Meng Liu
发明人： Chiawei Liao , Jing-Meng Liu
IPC分类号： H05B33/08
CPC分类号： H05B33/0845 , G09G3/3406 , G09G2330/04 , H05B33/0812 , H05B33/0827 , H05B33/089 , Y02B20/345
摘要： The present invention discloses a backlight control circuit with flexible configuration, comprising: a light emitting device path; a current source for controlling the current amount on the light emitting device path, the current source receiving a relatively high reference voltage in a first state, and receiving a relatively low reference voltage in a second state; and a current source control circuit for controlling the current source, whereby when the light emitting device path is in normal use, the current source is set to the first state, and when the light emitting device path is not in normal use, the current source is set to the second state.
摘要翻译： 本发明公开了一种具有柔性结构的背光控制电路，包括：发光器件路径; 用于控制发光器件路径上的电流量的电流源，电流源在第一状态下接收相对高的参考电压，并且在第二状态下接收相对低的参考电压; 以及用于控制电流源的电流源控制电路，由此当正常使用发光器件路径时，将电流源设置为第一状态，并且当发光器件路径不正常使用时，电流源 被设置为第二状态。
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