公开(公告)号：US20090078852A1

公开(公告)日：2009-03-26

申请号：US12099777

申请日：2008-04-08

申请人： Chi-Hsiu Lin ,  Chun-Chien Chiu ,  Shin-Chang Lin

发明人： Chi-Hsiu Lin ,  Chun-Chien Chiu ,  Shin-Chang Lin

IPC分类号： G01J1/32

CPC分类号： G01J3/46 ,  G01J1/32 ,  G01J3/463 ,  G01J3/50 ,  G01J3/506 ,  G09G3/2014 ,  G09G3/32 ,  G09G3/3413 ,  G09G2320/0242 ,  G09G2320/029 ,  G09G2320/064 ,  G09G2360/145

摘要： An area-control based LED backlight system for a panel is divided into a plurality of independently controllable light emitting regions. A single color sensor or light sensor detects light emitting status of the regions. Reference values corresponding to the regions are set based on a white balance parameter. The reference values are compared to the light emitting status of the regions for performing color components ratio calibration, so as to compensate luminance and chrominance of light emitted from the regions and lightening the panel. Further, a single light sensor is used for detecting light emitted from LED sets of a whole-panel based LED backlight system for a panel. A reference value is compared to a detection result of the light sensor for generating a color component calibration parameter, so as to compensate luminance and chrominance of light emitted from the LED sets and lightening the panel.

摘要翻译： 用于面板的面积控制的LED背光系统被分成多个可独立控制的发光区域。 单个颜色传感器或光传感器检测区域的发光状态。 基于白平衡参数来设定与该区域对应的基准值。 将参考值与用于进行颜色分量比校准的区域的发光状态进行比较，以便补偿从区域发射的光的亮度和色度，并且减轻面板。 此外，单个光传感器用于检测面板的基于全面板的LED背光系统的LED组发出的光。 将参考值与用于产生颜色分量校准参数的光传感器的检测结果进行比较，以便补偿从LED组发出的光的亮度和色度，并减轻面板。

公开(公告)号：US08154219B2

公开(公告)日：2012-04-10

申请号：US12490348

申请日：2009-06-24

申请人： Chi-Hsiu Lin ,  Chun-Chien Chiu ,  Chien-Yang Chen

发明人： Chi-Hsiu Lin ,  Chun-Chien Chiu ,  Chien-Yang Chen

IPC分类号： G05F1/00 ,  H05B37/02 ,  H05B39/04 ,  H05B41/36

CPC分类号： H05B41/3925 ,  G09G3/3406 ,  H05B41/3927 ,  Y10S315/05

摘要： A control signal is provided for turning on and turning off a lamp of a backlight source. For a first duration when the liquid crystal is rotating, adjust a frequency of the control signal to turn on and turn off the lamp of the backlight source consecutively or adjust a duty cycle of the control signal to turn off and then turn on the lamp of the backlight source. Thus, the backlight source has a luminance value for the first duration, and the control signal turns on the lamp of the backlight source for a second duration when the liquid crystal is in the steady state.

摘要翻译： 提供控制信号用于打开和关闭背光源的灯。 在液晶旋转的第一个持续时间内，调节控制信号的频率以接通并连续关闭背光源的灯泡，或调节控制信号的占空比关闭，然后打开 背光源。 因此，背光源具有第一持续时间的亮度值，并且当液晶处于稳定状态时，控制信号使背光源的灯持续第二持续时间。

公开(公告)号：US20100123416A1

公开(公告)日：2010-05-20

申请号：US12490348

申请日：2009-06-24

申请人： Chi-Hsiu Lin ,  Chun-Chien Chiu ,  Chien-Yang Chen

发明人： Chi-Hsiu Lin ,  Chun-Chien Chiu ,  Chien-Yang Chen

IPC分类号： H05B39/00

CPC分类号： H05B41/3925 ,  G09G3/3406 ,  H05B41/3927 ,  Y10S315/05

摘要： A control signal is provided for turning on and turning off a lamp of a backlight source. For a first duration when the liquid crystal is rotating, adjust a frequency of the control signal to turn on and turn off the lamp of the backlight source consecutively or adjust a duty cycle of the control signal to turn off and then turn on the lamp of the backlight source. Thus, the backlight source has a luminance value for the first duration, and the control signal turns on the lamp of the backlight source for a second duration when the liquid crystal is in the steady state.

摘要翻译： 提供控制信号用于打开和关闭背光源的灯。 在液晶旋转的第一个持续时间内，调节控制信号的频率以接通并连续关闭背光源的灯泡，或调节控制信号的占空比关闭，然后打开 背光源。 因此，背光源具有第一持续时间的亮度值，并且当液晶处于稳定状态时，控制信号使背光源的灯持续第二持续时间。

公开(公告)号：US20090102782A1

公开(公告)日：2009-04-23

申请号：US12199809

申请日：2008-08-28

申请人： Chi-Hsiu Lin ,  Shin-Chang Lin

发明人： Chi-Hsiu Lin ,  Shin-Chang Lin

IPC分类号： G09G3/36

CPC分类号： H05B33/0815 ,  H05B33/0827

摘要： A backlight apparatus is provided. The apparatus includes a light emitting unit, a voltage converter, a voltage detection unit, a correction unit, and a feedback control unit. The light emitting unit has a first connection end and a second connection end. The voltage converter transforms an input voltage into a rated voltage according to a periodic signal. The voltage detection unit detects a voltage level on the first connection end and the second connection end, and generates a measuring voltage. The correction unit performs a gain correction of the measuring voltage and adjusts the corrected measuring voltage by a specific ratio to generate a correction voltage. The feedback control unit outputs a feedback signal according to the correction voltage, and the voltage converter dynamically modifies the periodic signal according the feedback signal.

摘要翻译： 提供背光装置。 该装置包括发光单元，电压转换器，电压检测单元，校正单元和反馈控制单元。 发光单元具有第一连接端和第二连接端。 电压转换器根据周期信号将输入电压转换成额定电压。 电压检测单元检测第一连接端和第二连接端的电压电平，并产生测量电压。 校正单元执行测量电压的增益校正，并且将校正的测量电压调整特定比例以产生校正电压。 反馈控制单元根据校正电压输出反馈信号，电压转换器根据反馈信号动态地修改周期信号。

公开(公告)号：US07667683B2

公开(公告)日：2010-02-23

申请号：US12188202

申请日：2008-08-07

申请人： Chien-Yang Chen ,  Chi-Hsiu Lin ,  Shin-Chang Lin ,  Po-Kun Hsieh

发明人： Chien-Yang Chen ,  Chi-Hsiu Lin ,  Shin-Chang Lin ,  Po-Kun Hsieh

IPC分类号： G09G3/36

CPC分类号： H05B33/0812 ,  Y02B20/345

摘要： A light source driving circuit includes a voltage signal source and a temperature-improving current source for adjusting luminance of a series of LEDs. A first end of the series of LEDs is electrically connected to a ground end. The temperature-improving current source includes an adjustable power supply for outputting an adjustable voltage, a voltage-controlled current source for outputting currents according to the voltage signal source, and a feedback circuit electrically connected between a second end of the series of the LEDs and the adjustable power supply for controlling the output voltage of the adjustable power supply according to the voltage on the second end of the series of LEDs.

摘要翻译： 光源驱动电路包括电压信号源和用于调节一系列LED的亮度的温度改善电流源。 一系列LED的第一端电连接到地端。 温度改善电流源包括用于输出可调电压的可调节电源，用于根据电压信号源输出电流的压控电流源，以及电连接在一系列LED的第二端和 所述可调电源用于根据所述一系列LED的第二端上的电压来控制所述可调电源的输出电压。

公开(公告)号：US20090322243A1

公开(公告)日：2009-12-31

申请号：US12424535

申请日：2009-04-15

申请人： Chi-Hsiu Lin ,  Shin-Chang Lin ,  Chien-Yang Chen

发明人： Chi-Hsiu Lin ,  Shin-Chang Lin ,  Chien-Yang Chen

IPC分类号： H05B41/16

CPC分类号： H05B41/2828 ,  H05B41/295

摘要： A driving circuit includes a signal generator, a resonant circuit, a control circuit and an adjusting circuit. The signal generator is utilized for generating an alternating current (AC) signal having a fixed frequency. The resonant circuit is coupled to the signal generator, and is utilized for generating an oscillation signal to drive a backlight source according to the alternating current signal. The control circuit is utilized for providing a control signal. The adjusting circuit is coupled to the control circuit, the resonant circuit and the backlight source, and is utilized for providing an impedance according to the control signal to thereby adjust a current value of the backlight source.

摘要翻译： 驱动电路包括信号发生器，谐振电路，控制电路和调整电路。 信号发生器用于产生具有固定频率的交流（AC）信号。 谐振电路耦合到信号发生器，并用于根据交流信号产生振荡信号以驱动背光源。 控制电路用于提供控制信号。 调节电路耦合到控制电路，谐振电路和背光源，并用于根据控制信号提供阻抗，从而调节背光源的电流值。

公开(公告)号：US20090212716A1

公开(公告)日：2009-08-27

申请号：US12188202

申请日：2008-08-07

申请人： Chien-Yang Chen ,  Chi-Hsiu Lin ,  Shin-Chang Lin ,  Po-Kun Hsieh

发明人： Chien-Yang Chen ,  Chi-Hsiu Lin ,  Shin-Chang Lin ,  Po-Kun Hsieh

IPC分类号： H05B41/36

CPC分类号： H05B33/0812 ,  Y02B20/345

摘要： A light source driving circuit includes a voltage signal source and a temperature-improving current source for adjusting luminance of a series of LEDs. A first end of the series of LEDs is electrically connected to a ground end. The temperature-improving current source includes an adjustable power supply for outputting an adjustable voltage, a voltage-controlled current source for outputting currents according to the voltage signal source, and a feedback circuit electrically connected between a second end of the series of the LEDs and the adjustable power supply for controlling the output voltage of the adjustable power supply according to the voltage on the second end of the series of LEDs.

摘要翻译： 光源驱动电路包括电压信号源和用于调节一系列LED的亮度的温度改善电流源。 一系列LED的第一端电连接到地端。 温度改善电流源包括用于输出可调电压的可调节电源，用于根据电压信号源输出电流的压控电流源，以及电连接在一系列LED的第二端和 所述可调电源用于根据所述一系列LED的第二端上的电压来控制所述可调电源的输出电压。

公开(公告)号：US08115409B2

公开(公告)日：2012-02-14

申请号：US12424535

申请日：2009-04-15

申请人： Chi-Hsiu Lin ,  Shin-Chang Lin ,  Chien-Yang Chen

发明人： Chi-Hsiu Lin ,  Shin-Chang Lin ,  Chien-Yang Chen

IPC分类号： H05B37/02

CPC分类号： H05B41/2828 ,  H05B41/295

摘要： A driving circuit includes a signal generator, a resonant circuit, a control circuit and an adjusting circuit. The signal generator is utilized for generating an alternating current (AC) signal having a fixed frequency. The resonant circuit is coupled to the signal generator, and is utilized for generating an oscillation signal to drive a backlight source according to the alternating current signal. The control circuit is utilized for providing a control signal. The adjusting circuit is coupled to the control circuit, the resonant circuit and the backlight source, and is utilized for providing an impedance according to the control signal to thereby adjust a current value of the backlight source.

摘要翻译： 驱动电路包括信号发生器，谐振电路，控制电路和调整电路。 信号发生器用于产生具有固定频率的交流（AC）信号。 谐振电路耦合到信号发生器，并用于根据交流信号产生振荡信号以驱动背光源。 控制电路用于提供控制信号。 调节电路耦合到控制电路，谐振电路和背光源，并用于根据控制信号提供阻抗，从而调节背光源的电流值。

公开(公告)号：US07663599B1

公开(公告)日：2010-02-16

申请号：US12390511

申请日：2009-02-23

申请人： Chi-Hsiu Lin ,  Chien-Yang Chen ,  Shin-Chang Lin

发明人： Chi-Hsiu Lin ,  Chien-Yang Chen ,  Shin-Chang Lin

IPC分类号： G09G3/36

CPC分类号： G09G3/342 ,  G09G2320/041 ,  G09G2320/064 ,  H05B33/0818

摘要： A driving circuit for an LED backlight system is disclosed. The driving circuit includes an input voltage, an input resistor, an operational amplifier, a first transistor and a current calculation unit. The operational amplifier has a positive input terminal electrically connected to the input voltage through the input resistor, and an output terminal electrically connected to its negative input terminal thorough a feedback network. The first transistor is utilized for draining a reference current to control an output voltage of the operational amplifier according to the input voltage and the input resistor. The current calculation unit is utilized for generating a plurality of working currents proportional to the reference current to drive a plurality of LED strings according to the output voltage of the operational amplifier.

摘要翻译： 公开了一种用于LED背光系统的驱动电路。 驱动电路包括输入电压，输入电阻，运算放大器，第一晶体管和电流计算单元。 运算放大器具有通过输入电阻器电连接到输入电压的正输入端子，以及通过反馈网络电连接到其负输入端子的输出端子。 第一晶体管用于排放参考电流，以根据输入电压和输入电阻来控制运算放大器的输出电压。 当前计算单元用于产生与参考电流成比例的多个工作电流，以根据运算放大器的输出电压来驱动多个LED串。

公开(公告)号：US20100283411A1

公开(公告)日：2010-11-11

申请号：US12534858

申请日：2009-08-04

申请人： Chien-Yang Chen ,  Chi-Hsiu Lin

发明人： Chien-Yang Chen ,  Chi-Hsiu Lin

IPC分类号： H05B41/36

CPC分类号： H05B33/0812 ,  Y02B20/343

摘要： A light emitting diode (LED) driving device and an LED driving method thereof are provided. The LED driving device includes a voltage generator, a circuit and a compensation circuit. The voltage generator is used to provide a positive voltage and a negative voltage, and the circuit is coupled to the positive voltage and the negative voltage. Herein, the circuit includes a load and an LED which are coupled to each other in series. The compensation circuit is used to sense voltages of two ends of the load, so as to generate a compensation signal and adjust the positive voltage and the negative voltage through the compensation signal. Therefore, voltage stress of the LED driving device is reduced by using the provided positive voltage and the provided negative voltage.

摘要翻译： 提供了一种发光二极管（LED）驱动装置及其LED驱动方法。 LED驱动装置包括电压发生器，电路和补偿电路。 电压发生器用于提供正电压和负电压，并且电路耦合到正电压和负电压。 这里，电路包括串联耦合的负载和LED。 补偿电路用于检测负载两端的电压，以产生补偿信号，并通过补偿信号调节正电压和负电压。 因此，通过使用所提供的正电压和所提供的负电压来降低LED驱动装置的电压应力。