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公开(公告)号：US20090174698A1
公开(公告)日：2009-07-09
申请号：US12348234
申请日：2009-01-02
CPC分类号： G09G3/3688 , G09G3/3648 , G09G3/3655 , G09G2310/0251 , G09G2320/0233 , G09G2320/0242 , G09G2320/0252 , G09G2320/041
摘要： A driving circuit and a method of driving a liquid crystal display having an array of liquid crystal cells connected to a common line, a plurality of gate lines and a plurality of signal lines, each gate line being arranged to selectively enable a respective set of the liquid crystal cells such that signal lines connected to respective liquid crystal cells of a set can be used to charge respective liquid crystal cells of that set when that set is enabled by the respective gate line. The common line is driven with a common signal having selectively one of a first level and a second level. The gate lines are driven so as to selectively enable the respective sets of liquid crystal cells. Liquid crystal cells are charged with video signal levels varying between a minimum level and a maximum level wherein, when the common signal has the first level, the minimum level is the first level and the maximum level is the second level and, when the common signal has the second level, the minimum level is the second level and the maximum level is the first level. At least some of the signal lines are selectively driven with the maximum level and the voltage on the at least some of the signal lines is monitored such that driving of the at least some of the signal lines with the maximum level ceases when the monitored voltage reaches a predetermined target value intermediate the minimum level and the maximum level. A control circuit is configured to pre-charge liquid crystal cells prior to charging those liquid crystal cells according to the video signal levels by driving those liquid crystal cells with the maximum level until the monitored voltage reaches the predetermined target value.
摘要翻译： 驱动电路和驱动液晶显示器的方法，液晶显示器具有连接到公共线，多条栅极线和多条信号线的液晶单元阵列，每条栅极线被布置成选择性地使能相应的一组 液晶单元，使得连接到一组的各个液晶单元的信号线可以用于对该组的各个液晶单元进行充电，当该组由相应的栅极线使能时。 公共线由具有第一电平和第二电平的选择性的一个的公共信号驱动。 栅极线被驱动以选择性地使能各组液晶单元。 液晶单元被充有在最小电平和最大电平之间变化的视频信号电平，其中当公共信号具有第一电平时，最小电平是第一电平，最大电平是第二电平，并且当公共信号 具有第二级，最低级别为第二级，最高级别为第一级。 至少一些信号线被选择性地以最大电平驱动，并且监视至少一些信号线上的电压，使得当所监视的电压到达时，具有最大电平的至少一些信号线的驱动停止 在最小水平和最大水平之间的预定目标值。 控制电路被配置为在通过以最大电平驱动这些液晶单元之前，根据视频信号电平对这些液晶单元充电之前对液晶单元进行预充电，直到监视电压达到预定目标值。
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公开(公告)号：US08179392B2
公开(公告)日：2012-05-15
申请号：US12348234
申请日：2009-01-02
IPC分类号： G06F3/038
CPC分类号： G09G3/3688 , G09G3/3648 , G09G3/3655 , G09G2310/0251 , G09G2320/0233 , G09G2320/0242 , G09G2320/0252 , G09G2320/041
摘要： A driving circuit and a method of driving a liquid crystal display having an array of liquid crystal cells connected to a common line, a plurality of gate lines and a plurality of signal lines, each gate line being arranged to selectively enable a respective set of the liquid crystal cells such that signal lines connected to respective liquid crystal cells of a set can be used to charge respective liquid crystal cells of that set when that set is enabled by the respective gate line. At least some of the signal lines are selectively driven with the maximum level and the voltage on the at least some of the signal lines is monitored such that driving of the at least some of the signal lines with the maximum level ceases when the monitored voltage reaches a predetermined target value intermediate the minimum level and the maximum level.
摘要翻译： 驱动电路和驱动液晶显示器的方法，液晶显示器具有连接到公共线，多条栅极线和多条信号线的液晶单元阵列，每条栅极线被布置成选择性地使能相应的一组 液晶单元，使得连接到一组的各个液晶单元的信号线可以用于对该组的各个液晶单元进行充电，当该组由相应的栅极线使能时。 至少一些信号线被选择性地以最大电平驱动，并且监视至少一些信号线上的电压，使得当所监视的电压到达时，具有最大电平的至少一些信号线的驱动停止 在最小水平和最大水平之间的预定目标值。
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