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    • 7. 发明授权
    • Liquid crystal display device with a pre-charging circuit
    • 带预充电电路的液晶显示装置
    • US07683870B2
    • 2010-03-23
    • US11320252
    • 2005-12-27
    • Sin Ho KangJin Cheol HongSung Chul Ha
    • Sin Ho KangJin Cheol HongSung Chul Ha
    • G09G3/36
    • G09G3/3688G09G3/2011G09G3/3614G09G2310/0248G09G2310/027G09G2330/023
    • A liquid crystal display device is set forth that comprises a data line that is connected to drive a liquid crystal cell and an output driver connected to selectively provide a pixel drive signal to the data line. The pixel drive signal corresponds to a digital video data signal provided to the liquid crystal display device. A pre-charging circuit is used to reduce the power consumed by the output driver. To this end, the pre-charging circuit is connected to selectively pre-charge the data line to one or more of a plurality of voltage levels depending on the value of the digital video data signal. In one embodiment, the plurality of voltage levels comprises a positive pre-charge voltage, a negative pre-charge voltage, and a charge share voltage. The magnitudes of the positive pre-charge voltage and the negative pre-charge voltage may be chosen so that they are greater than the magnitude of the charge share voltage.
    • 提出了一种液晶显示装置,其包括连接到驱动液晶单元的数据线和连接到选择性地向数据线提供像素驱动信号的输出驱动器。 像素驱动信号对应于提供给液晶显示装置的数字视频数据信号。 预充电电路用于减少输出驱动器消耗的功率。 为此,预充电电路被连接以根据数字视频数据信号的值选择性地将数据线预充电到多个电压电平中的一个或多个。 在一个实施例中,多个电压电平包括正的预充电电压,负的预充电电压和电荷共享电压。 可以选择正预充电电压和负预充电电压的大小,使得它们大于电荷共享电压的幅度。