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    • 6. 发明申请
    • LIQUID CRYSTAL DISPLAY DEVICE AND LIGHT SOURCE CONTROL METHOD
    • 液晶显示器件和光源控制方法
    • US20120086628A1
    • 2012-04-12
    • US13378872
    • 2010-03-26
    • Hideki IchiokaTakayuki MuraiKohji Fujiwara
    • Hideki IchiokaTakayuki MuraiKohji Fujiwara
    • G09G3/36
    • G09G3/342G02F1/133603G09G3/3648G09G2320/0257G09G2320/041G09G2320/064
    • Disclosed is a liquid crystal display device including: a liquid crystal display panel; a backlight unit incorporating a PWM dimming type light source; and a control unit that controls the liquid crystal display panel and the backlight unit. The control unit obtains response speed data of orientation change of liquid crystal molecules, and changes a duty factor of a PWM dimming signal according to the response speed data. In a case where the response speed of the liquid crystal molecules is relatively high, LEDs are driven with a relatively small duty factor. In a case where the response speed of the liquid crystal molecules is relatively low, the LEDs are driven with a relatively large duty factor, and black insertion is not performed. The liquid crystal display device prevents an image quality malfunction that is apt to occur depending on the degrees of inclination of the liquid crystal molecules.
    • 本发明公开了一种液晶显示装置,包括:液晶显示面板; 结合有PWM调光型光源的背光单元; 以及控制液晶显示面板和背光单元的控制单元。 控制单元获得液晶分子的取向变化的响应速度数据,根据响应速度数据改变PWM调光信号的占空因数。 在液晶分子的响应速度相对较高的情况下,以较小的占空因数驱动LED。 在液晶分子的响应速度相对较低的情况下,以较大的占空因数驱动LED,不进行黑插入。 液晶显示装置根据液晶分子的倾斜度防止容易发生的图像质量故障。