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JP2008015456A Reference voltage generating circuit and liquid crystal display device using the same 有权
标题翻译：参考电压发生电路和液晶显示装置
公开(公告)号：JP2008015456A
公开(公告)日：2008-01-24
申请号：JP2006338792
申请日：2006-12-15
申请人： Lg Philips Lcd Co Ltd , エルジーフィリップスエルシーディーカンパニーリミテッド
发明人： LEE BU YEOL
IPC分类号： G09G3/36 , G02F1/133 , G09G3/20 , H02M3/07
CPC分类号： G09G3/3655 , G09G3/3614 , G09G2320/0247
摘要： PROBLEM TO BE SOLVED: To provide a reference voltage generating circuit suitable for generation of a reference voltage, the circuit showing a short transition period between at least two levels and stably maintaining the transition level.
SOLUTION: The reference voltage generating circuit includes: a main pumping section selectively performing fast positive and negative pumping for rapidly increasing or decreasing an output voltage on the output node; a sub-pumping section selectively performing slow positive and negative pumping for slowly increasing or decreasing an output voltage on the output node; an input section inputting a level designating signal alternately and periodically designating a first reference level and a second reference level lower than the first level; and a switch control section alternately comparing an output voltage with the first and second reference levels in response to the level designating signal, and selecting one of the positive and negative pumping in the main pumping section and the positive and negative pumping in the sub pumping section.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：为了提供适于产生参考电压的参考电压产生电路，该电路在至少两个电平之间显示短的过渡期，并稳定地保持转换电平。参考电压产生电路包括：主泵送部分选择性地执行快速正和负泵浦以快速增加或减小输出节点上的输出电压; 子泵浦部分选择性地执行缓慢的正和负泵浦以缓慢地增加或减小输出节点上的输出电压; 输入部分交替地输入电平指定信号并且周期性地指定低于第一电平的第一参考电平和第二参考电平; 以及开关控制部分，响应于电平指定信号交替地将输出电压与第一和第二参考电平进行比较，并且选择主泵送部分中的正和负泵浦中的一个以及副泵送部分中的正和负泵浦。版权所有（C）2008，JPO＆INPIT

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