公开(公告)号：US20100134039A1

公开(公告)日：2010-06-03

申请号：US12356546

申请日：2009-01-21

申请人： Ching-Chou Yu ,  Chien-Ming Ko ,  Yueh-Han Li ,  Hung-Ching Lee

发明人： Ching-Chou Yu ,  Chien-Ming Ko ,  Yueh-Han Li ,  Hung-Ching Lee

IPC分类号： H05B41/36

CPC分类号： H05B33/0818 ,  G09G3/3426 ,  G09G2320/064 ,  H05B33/0857 ,  Y02B20/346

摘要： A light emitting diode (LED) backlight module, a driving apparatus and a driving method thereof are provided. The driving apparatus is adapted to drive at least one LED of at least one lighting unit within the LED backlight module. The driving apparatus includes a latch unit and a switch unit. The latch unit is used for receiving a control backlight data and latching the control backlight data during a frame period according to a trigger signal, so as to output a control signal. The switch unit is coupled to the latch unit and the LED for receiving the control signal to determine whether the LED emits or not.

摘要翻译： 提供了一种发光二极管（LED）背光模块，驱动装置及其驱动方法。 所述驱动装置适于驱动所述LED背光模块内的至少一个照明单元的至少一个LED。 驱动装置包括闩锁单元和开关单元。 闩锁单元用于接收控制背光数据，并且根据触发信号在帧周期期间锁存控制背光数据，以便输出控制信号。 开关单元耦合到锁存单元和用于接收控制信号的LED，以确定LED是否发光。

公开(公告)号：US20120049750A1

公开(公告)日：2012-03-01

申请号：US13110154

申请日：2011-05-18

申请人： Dang-Ko Wang ,  Hung-Ching Lee ,  Ching-Chou Yu

发明人： Dang-Ko Wang ,  Hung-Ching Lee ,  Ching-Chou Yu

IPC分类号： H05B37/02

CPC分类号： H05B33/0827

摘要： An exemplary LED driving method is adapted for driving multiple LED strings. Each of the LED strings includes single one LED or multiple LEDs connected in series. In particular, the LED driving method includes steps of: obtaining an initial value of a duty-on period of a driving current in a frequency period to thereby acquire a target accumulative luminosity in the initial value of the duty-on period for each of the LED strings; and prolonging the duty-on period of the driving current in the frequency period and assuring an accumulative luminosity in the prolonged duty-on period to be substantially equal to the target accumulative luminosity for each of the LED strings, when the maximum one of the initial values of the duty-on periods of the driving currents in the frequency period for the LED strings is shorter than the frequency period.

摘要翻译： LED驱动方法适用于驱动多个LED串。 每个LED串包括串联连接的单个LED或多个LED。 特别地，LED驱动方法包括以下步骤：获得频率周期中的驱动电流的占空比周期的初始值，从而获得每个的每个的占空比期间的初始值的目标累积亮度 LED灯串; 并且在频率周期中延长驱动电流的占空比时间，并且在延长的占空比时间段中确保每个LED串的目标累积亮度基本上等于目标累积亮度的累积亮度，当最初的 LED串的频率周期中的驱动电流的占空比周期的值比频率周期短。

公开(公告)号：US20110156603A1

公开(公告)日：2011-06-30

申请号：US12952607

申请日：2010-11-23

申请人： Chien-Ming KO ,  Yueh-Han Li ,  Sheng-Kai Hsu ,  Hung-Ching Lee

发明人： Chien-Ming KO ,  Yueh-Han Li ,  Sheng-Kai Hsu ,  Hung-Ching Lee

IPC分类号： H05B37/02

CPC分类号： H05B33/0845 ,  H05B33/0815 ,  H05B33/0818 ,  H05B33/0827 ,  H05B33/089

摘要： An exemplary light-emitting diode (LED) driving circuit includes a LED driving IC, at least a LED string and at least a resistor. The LED string each is electrically coupled between a power source voltage and a control terminal of the LED driving IC and whereby a driving current of the LED string is subjected to the control of the LED driving IC. The resistor each is electrically coupled to between the control terminal and a predetermined potential. Moreover, a LED driving method also is provided.

摘要翻译： 示例性的发光二极管（LED）驱动电路包括LED驱动IC，至少LED串和至少一个电阻器。 LED串各自电连接在LED驱动IC的电源电压和控制端子之间，由此对LED串的驱动电流进行LED驱动IC的控制。 电阻器各自电连接到控制端子和预定电位之间。 此外，还提供了LED驱动方法。

公开(公告)号：US20110084621A1

公开(公告)日：2011-04-14

申请号：US12786680

申请日：2010-05-25

申请人： Chien-Ming KO ,  Hung-Ching Lee ,  Chih-Fu Hsu ,  Yueh-Han Li

发明人： Chien-Ming KO ,  Hung-Ching Lee ,  Chih-Fu Hsu ,  Yueh-Han Li

IPC分类号： H05B37/02

CPC分类号： H05B33/0851 ,  H05B33/0827

摘要： A light-emitting adjustment method and a display device are provided. The display device includes a voltage source, a light-emitting diode array, a pulse width modulator, a current sensor and a light-emitting adjuster. The voltage source provides an operating voltage. The pulse width modulator provides operating pulse signals to multiple light-emitting diodes arranged in column in order. The current sensor senses a plurality of overall current values of the light-emitting diodes at different timings during the light-emitting diodes are sequentially enabled. The light-emitting adjuster computes an operating current value of each of the light-emitting diodes according to the overall current values and performs a compensation operation based on the operating current value to obtain and output a compensation signal.

摘要翻译： 提供了一种发光调节方法和显示装置。 显示装置包括电压源，发光二极管阵列，脉宽调制器，电流传感器和发光调节器。 电压源提供工作电压。 脉冲宽度调制器向按列排列的多个发光二极管提供工作脉冲信号。 电流传感器在顺序启动发光二极管期间以不同的定时感测发光二极管的多个总电流值。 发光调整器根据总电流值计算出各发光二极管的工作电流值，并根据工作电流值进行补偿动作，得到并输出补偿信号。