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    • 3. 发明授权
    • Liquid crystal display device and method of driving the same
    • 液晶显示装置及其驱动方法
    • US08242716B2
    • 2012-08-14
    • US12857009
    • 2010-08-16
    • Sung-Min JeDong-Hoon Jang
    • Sung-Min JeDong-Hoon Jang
    • H05B37/02
    • H05B33/0815G09G3/3406G09G2320/064G09G2330/08Y02B20/341
    • A backlight driving circuit for a liquid crystal display device including a light emitting diode controlling portion for outputting a brightness control signal, a light emitting diode driving portion that amplifies an input voltage to produce the first driving voltage and that uses the brightness control signal to adjust a second driving voltage, a backlight unit including a plurality of channels, each of the plurality of channels including a light emitting diode array supplied in common with the first and second driving voltages from the light emitting diode driving portion, a feedback voltage terminal on each of the plurality of channels that outputs a feedback voltage to the light emitting diode controlling portion, a detecting element on each of the plurality of channels that detects the feedback voltage, and a current set resistor disposed between the plurality of channels and a ground terminal of the light emitting diode driving portion.
    • 一种用于液晶显示装置的背光驱动电路,包括用于输出亮度控制信号的发光二极管控制部分,放大输入电压以产生第一驱动电压的发光二极管驱动部分,并使用亮度控制信号进行调整 第二驱动电压,包括多个通道的背光单元,所述多个通道中的每一个包括与来自所述发光二极管驱动部分的所述第一和第二驱动电压共同提供的发光二极管阵列,每个所述反馈电压端子 将多个通道输出到发光二极管控制部分的多个通道中的检测元件,检测反馈电压的多个通道中的每一个上的检测元件,以及设置在多个通道之间的电流设定电阻器和设置在多个通道之间的电流设定电阻器, 发光二极管驱动部。