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    • 21. 发明申请
    • Digital-analog converter, data driver, and flat panel display device using the same
    • 数模转换器,数据驱动器和使用其的平板显示器件
    • US20070171176A1
    • 2007-07-26
    • US11606570
    • 2006-11-28
    • Oh Kyong KwonByong Deok Choi
    • Oh Kyong KwonByong Deok Choi
    • G09G3/36
    • G09G3/2011G09G2310/027G09G2310/0297
    • A digital-analog converter (DAC) including: a gray scale generator having a plurality of switches for generating desired gray scale voltages through charge sharing between at least two data lines; a switching signal generator for providing operation control signals for the plurality of switches of the gray scale generator; and a reference voltage generator for generating reference voltages and for providing the reference voltages to the gray scale generator. In one embodiment, the charge sharing used by the DAC is executed by a holding capacitor and a sampling capacitor, and the holding capacitor and the sampling capacitor are formed using respective parasitic capacitance components existing in the at least two data lines, thereby reducing area and power consumption over an existing R-string type of DAC.
    • 一种数模转换器(DAC),包括:具有多个开关的灰度发生器,用于通过至少两条数据线之间的电荷共享产生期望的灰度电压; 切换信号发生器,用于为灰度发生器的多个开关提供操作控制信号; 以及用于产生参考电压并用于将参考电压提供给灰度发生器的参考电压发生器。 在一个实施例中,由DAC使用的电荷共享由保持电容器和采样电容器执行,并且保持电容器和采样电容器是使用存在于至少两条数据线中的各个寄生电容分量形成的, 现有的R串型DAC的功耗。