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    • 10. 发明申请
    • DRIVING CIRCUIT FOR A LIGHT-EMITTING DIODE BACKLIGHT AND METHOD FOR DRIVING THE SAME
    • 用于发光二极管背光的驱动电路和用于驱动相同的方法
    • WO2017153126A1
    • 2017-09-14
    • PCT/EP2017/053116
    • 2017-02-13
    • AMS AG
    • GAMPERL, David
    • H05B33/08G09G3/34
    • G02F1/133603G09G3/3406G09G3/3426G09G2330/021H05B33/0815H05B33/0827H05B33/083H05B33/0845Y02B20/347
    • A driving circuit for an LED backlight with at least a first and a second segment (Sl, S2) has a first terminal (11), a second terminal (12) for sensing a first signal (Sgl), a third terminal (13) for connecting to a first current generating unit (Tl, CS1) for providing a first driving current (11), a first current regulation circuit (PWM1) for controlling the first current generating unit (CS1, Tl), a fourth terminal (22) for sensing a second signal (Sg2), a fifth terminal (23) for connecting to a second current generating unit (CS2, T2) for providing a second driving current (12), a second current regulation circuit (PWM2) for controlling the second current generating unit (CS2, T2), and a control unit (CTL) which is prepared to adjust the supply voltage (Vled) and to adjust the first and/or second driving current (11, 12) in dependence on the first and the second signal (Sgl, Sg2) by means of the first and/or the second current regulation circuits (PWM1, PWM2).
    • 用于具有至少第一和第二段(S1,S2)的LED背光的驱动电路具有第一端子(11),用于感测第一信号(Sg1)的第二端子(12) ),用于连接到用于提供第一驱动电流(11)的第一电流产生单元(T1,CS1)的第三端子(13),用于控制第一电流产生单元(CS1,T1)的第一电流调节电路(PWM1) ),用于感测第二信号(Sg2)的第四端子(22),用于连接到用于提供第二驱动电流(12)的第二电流产生单元(CS2,T2)的第五端子(23) 用于控制第二电流产生单元(CS2,T2)的电路(PWM2)以及准备用于调节电源电压(Vled)并调节第一和/或第二驱动电流(11,12)的控制单元(CTL) )通过第一和/或第二电流调节电路(PWM1,PWM2)依赖于第一和第二信号(Sg1,Sg2)。