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    • 9. 发明申请
    • Liquid Crystal Display Apparatus and LED Backlight Module Thereof
    • 液晶显示装置及其背光模组
    • US20140253840A1
    • 2014-09-11
    • US13876483
    • 2013-03-13
    • Hua Zhang
    • Hua Zhang
    • G02F1/1335H05B33/08
    • G09G3/34G09G3/3413G09G2320/043G09G2330/02G09G2330/021G09G2330/028H05B33/0815
    • The present invention discloses a liquid crystal display apparatus and an LED backlight module incorporated therein, and the LED backlight module includes a boosting circuit for receiving a direct current voltage, boosting the direct current voltage, and then outputting a step-up direct current voltage; an LED string, including a plurality of LEDs connected in series, for receiving the step-up direct current voltage from the boosting circuit; a constant current driver circuit for generating a signal used for controlling the boosting circuit; and a amplifying circuit for receiving the direct current voltage, amplifying the signal from the constant current driver circuit, and then outputting a magnified signal to the boosting circuit. According to the liquid crystal display apparatus and the LED backlight module incorporated therein of the present invention, the power consumption of the boosting circuit is reduced by adding the amplifying circuit for amplifying a driving voltage to the boosting circuit. Furthermore, the driving voltage input to the MOS transistor of the boosting circuit is amplified by the amplifying circuit, and thereby the value of the DCR value of the MOS transistor is reduced. As a result, the power consumption of the MOS transistor is reduced, and the temperature is lowered, so the lifespan of the MOS transistor is extended.
    • 本发明公开了一种结合在其中的液晶显示装置和LED背光模块,LED背光模块包括用于接收直流电压的升压电路,升压直流电压,然后输出升压直流电压; 包括串联连接的多个LED的LED串,用于从升压电路接收升压直流电压; 用于产生用于控制升压电路的信号的恒流驱动电路; 以及放大电路,用于接收直流电压,放大来自恒流驱动电路的信号,然后将放大信号输出到升压电路。 根据本发明的液晶显示装置和LED背光模块,通过将用于放大驱动电压的放大电路加到升压电路来降低升压电路的功耗。 此外,通过放大电路对升压电路的MOS晶体管的输入驱动电压进行放大,从而减小MOS晶体管的DCR值。 结果,MOS晶体管的功耗降低,并且温度降低,因此MOS晶体管的寿命延长。
    • 10. 发明申请
    • LED BACKLIGHT DRIVING CIRCUIT, LCD DEVICE, AND DRIVING CIRCUIT
    • LED背光驱动电路,LCD设备和驱动电路
    • US20140252984A1
    • 2014-09-11
    • US13880077
    • 2013-03-15
    • Hua ZhangFei Li
    • Hua ZhangFei Li
    • H05B33/08
    • H05B33/0827
    • The present disclosure provides a light emitting diode (LED) backlight driving circuit, a liquid crystal display (LCD) device, and a driving circuit. The LED backlight driving circuit includes a timing control module, an LED lightbar, and a driver module coupled with an output end of the LED lightbar. The driver module includes at least one constant current driver chip driving the LED lightbar to display. The timing control module successively outputs a driving signal to the constant current driver chip. The driving signal includes data units which are arranged in sequence, and each data unit storing a current duty and a phase delay of one LED lightbar. The constant current driver chip directly reads data of a corresponding data unit and drives the LED lightbar to display.
    • 本公开提供了一种发光二极管(LED)背光驱动电路,液晶显示器(LCD)装置和驱动电路。 LED背光驱动电路包括时序控制模块,LED灯条和与LED灯条的输出端相连的驱动模块。 驱动器模块包括驱动LED灯条来显示的至少一个恒流驱动器芯片。 定时控制模块将驱动信号连续输出到恒流驱动芯片。 驱动信号包括按顺序布置的数据单元,每个数据单元存储一个LED灯条的当前占空比和相位延迟。 恒流驱动器芯片直接读取相应数据单元的数据,并驱动LED灯条显示。