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    • 2. 发明申请
    • LED BACKLIGHT
    • LED背光
    • WO2010022182A2
    • 2010-02-25
    • PCT/US2009/054355
    • 2009-08-19
    • CRAMER, Donald, L.Via optronics, LLC
    • CRAMER, Donald, L.
    • H05B37/02G02F1/133
    • H05B33/0854
    • An LED backlight controller is disclosed. One embodiment comprises a luminance regulator to generate a luminance control signal to adjust a luminance level in a LED backlight assembly, a timing controller to generate a dimming control signal to adjust a dimming level in the LED backlight assembly, wherein the dimming control signal is a pulse width modulated signal, and an LED driver circuit to receive the luminance control signal and the dimming control signal, the LED driver circuit further to generate an LED driver signal to provide to the LED backlight assembly, wherein the LED driver circuit is configured to control luminance by adjusting the current of the LED driver signal, and wherein the LED driver circuit is configured to adjust a dimming level in the LED backlight assembly by a change in the duty cycle for the dimming control signal. Other embodiments are described herein.
    • 公开了一种LED背光控制器。 一个实施例包括:亮度调节器,用于生成亮度控制信号以调节LED背光组件中的亮度水平;定时控制器,用于生成调光控制信号以调节LED背光组件中的调光水平,其中调光控制信号是 脉冲宽度调制信号以及LED驱动器电路以接收所述亮度控制信号和所述调光控制信号,所述LED驱动器电路进一步产生LED驱动器信号以提供给所述LED背光组件,其中所述LED驱动器电路被配置为控制 通过调整LED驱动器信号的电流来控制亮度,并且其中LED驱动器电路被配置为通过用于调光控制信号的占空比的改变来调整LED背光组件中的调光水平。 这里描述了其他实施例。