公开(公告)号：US20080129903A1

公开(公告)日：2008-06-05

申请号：US11824045

申请日：2007-06-29

Applicant: Jin Cheol Hong ,  Soon Dong Cho ,  Boo Han Kim ,  Min Gi Kim

Inventor： Jin Cheol Hong ,  Soon Dong Cho ,  Boo Han Kim ,  Min Gi Kim

IPC: G02F1/133 ,  G02F1/136

CPC classification number: G09G3/3648 ,  G09G2310/0245 ,  G09G2310/061 ,  G09G2320/0257 ,  G09G2330/027

Abstract: A liquid crystal display device and a driving method thereof, which are capable of preventing generation of a residual image upon power-off, are disclosed. The liquid crystal display device includes a power supply unit for outputting a plurality of drive voltages after delaying the drive voltages, a voltage detector for monitoring one of the drive voltages, and outputting a power-off detect signal based on the result of the monitoring, a timing controller for increasing a frequency of a control signal in response to the power-off detect signal, and outputting the frequency-increased control signal, a gate driver for outputting a scan signal in response to the frequency-increased control signal, a data driver for outputting a constant voltage in response to another control signal from the timing controller, and a liquid crystal panel for applying the constant voltage to all sub-pixels of the liquid crystal panel in response to the scan signal.

Abstract translation: 公开了能够防止断电时产生残留图像的液晶显示装置及其驱动方法。 液晶显示装置包括用于在延迟驱动电压之后输出多个驱动电压的电源单元，用于监视驱动电压之一的电压检测器，并且基于监视结果输出断电检测信号， 定时控制器，用于响应于断电检测信号增加控制信号的频率，并输出增频控制信号;门驱动器，用于响应于频率增加的控制信号输出扫描信号;数据 驱动器，用于响应于来自时序控制器的另一个控制信号输出恒定电压;以及液晶面板，用于响应于扫描信号将恒定电压施加到液晶面板的所有子像素。

公开(公告)号：US08125424B2

公开(公告)日：2012-02-28

申请号：US11824045

申请日：2007-06-29

Applicant: Jin Cheol Hong ,  Soon Dong Cho ,  Boo Han Kim ,  Min Gi Kim

Inventor： Jin Cheol Hong ,  Soon Dong Cho ,  Boo Han Kim ,  Min Gi Kim

IPC: G02F1/33

CPC classification number: G09G3/3648 ,  G09G2310/0245 ,  G09G2310/061 ,  G09G2320/0257 ,  G09G2330/027

Abstract: A liquid crystal display device and a driving method thereof, which are capable of preventing generation of a residual image upon power-off, are disclosed. The liquid crystal display device includes a power supply unit for outputting a plurality of drive voltages after delaying the drive voltages, a voltage detector for monitoring one of the drive voltages, and outputting a power-off detect signal based on the result of the monitoring, a timing controller for increasing a frequency of a control signal in response to the power-off detect signal, and outputting the frequency-increased control signal, a gate driver for outputting a scan signal in response to the frequency-increased control signal, a data driver for outputting a constant voltage in response to another control signal from the timing controller, and a liquid crystal panel for applying the constant voltage to all sub-pixels of the liquid crystal panel in response to the scan signal.

Abstract translation: 公开了能够防止断电时产生残留图像的液晶显示装置及其驱动方法。 液晶显示装置包括用于在延迟驱动电压之后输出多个驱动电压的电源单元，用于监视驱动电压之一的电压检测器，并且基于监视结果输出断电检测信号， 定时控制器，用于响应于断电检测信号增加控制信号的频率，并输出增频控制信号;门驱动器，用于响应于频率增加的控制信号输出扫描信号;数据 驱动器，用于响应于来自时序控制器的另一个控制信号输出恒定电压;以及液晶面板，用于响应于扫描信号将恒定电压施加到液晶面板的所有子像素。