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发明申请
US20080204121A1 Voltage generating circuit having charge pump and liquid crystal display using same 审中-公开
具有电荷泵的电压产生电路和使用其的液晶显示器

Voltage generating circuit having charge pump and liquid crystal display using same
摘要：
An exemplary voltage generating circuit (34) includes a first pulse generator (341) configured to provide a first pulse signal having a fixed duty ratio, a second pulse generator (342) configured to provide a second pulse signal having a variable duty ratio, and a charge pump (343) electrically coupled to the first pulse generator and the second pulse generator. The charge pump outputs a voltage signal according to the first and second pulse signals. When the voltage signal is adjusted, the duty ratio of the second pulse signal is modulated by the second pulse generator, such that the voltage signal outputted by the charge bump is adjusted to have a corresponding value. A liquid crystal display (300) using the voltage generating circuit is also provided in the present invention.
摘要（中）：

示例性电压产生电路（34）包括被配置为提供具有固定占空比的第一脉冲信号的第一脉冲发生器（341），被配置为提供具有可变占空比的第二脉冲信号的第二脉冲发生器（342），以及 电耦合到第一脉冲发生器和第二脉冲发生器的电荷泵（343）。 电荷泵根据第一和第二脉冲信号输出电压信号。 当调整电压信号时，由第二脉冲发生器调制第二脉冲信号的占空比，使得由电荷凸块输出的电压信号被调整为具有相应的值。 在本发明中也提供使用电压产生电路的液晶显示器（300）。

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