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    • 31. 发明授权
    • Driving circuit and method for AMOLED using power pulse feed-through technique
    • 使用功率脉冲馈通技术的AMOLED驱动电路和方法
    • US07808497B2
    • 2010-10-05
    • US11599083
    • 2006-11-14
    • Shin-Tai LoWen-Tui LiaoChing-Fu Hsu
    • Shin-Tai LoWen-Tui LiaoChing-Fu Hsu
    • G06F3/038G09G5/00G09G3/32
    • G09G3/2014G09G3/3233G09G2300/0819G09G2300/0842G09G2300/0866G09G2320/043
    • An AMOLED driving circuit and driving method adds an additional switching transistor to a 2T1C driving circuit. An additional switching transistor is connected to the high voltage source, a scan line and a node connected a source terminal of a driving transistor of the 2T1C driving circuit and the light-emitting device. The additional switching transistor and an original switching transistor of the 2T1C driving circuit are activated when the scan line outputs high voltage. At the time, a low voltage of a PWM voltage is added to the high voltage source not to drive the driving transistor, and a storage capacitor stores a voltage of the image data signal. When the two switching transistors turn off and a high voltage of the PWM voltage is provided to the high voltage source, the driving transistor is driven to generate a driving current to the light-emitting device.
    • AMOLED驱动电路和驱动方法将附加的开关晶体管添加到2T1C驱动电路。 一个附加的开关晶体管连接到高电压源,扫描线和连接在2T1C驱动电路的驱动晶体管的源极端子和发光器件上的节点。 当扫描线输出高电压时,2T1C驱动电路的附加开关晶体管和原始开关晶体管被激活。 此时,不向驱动晶体管驱动高电压源的PWM电压的低电压,而存储电容器存储图像数据信号的电压。 当两个开关晶体管截止并且向高电压源提供PWM电压的高电压时,驱动晶体管被驱动以产生到发光器件的驱动电流。