公开(公告)号：US08125433B2

公开(公告)日：2012-02-28

申请号：US12318162

申请日：2008-12-22

申请人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

发明人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

IPC分类号： G09G3/36 ,  G09G5/00 ,  G06F3/038

CPC分类号： G09G3/3655 ,  G09G3/3614 ,  G09G3/3696 ,  G09G2320/0204 ,  G09G2320/0247 ,  G09G2320/0673

摘要： A liquid crystal display device and a driving method thereof are provided which can increase a display grade by removing a DC residual image. The liquid crystal display device comprises: a liquid crystal display panel for displaying gray levels by a potential difference between a common electrode for applying a common voltage and pixel electrodes for applying data voltages; a common voltage regulating circuit for generating a variable common voltage which is longitudinally symmetrical with respect to a DC common voltage of a predetermined level and whose voltage level is stepwisely varied at predetermined intervals; and a black gamma reference voltage regulating circuit for adding the variable common voltage to an offset voltage set as a gamma reference voltage of a black gray level to generate a variable gamma reference voltage varying with respect to the gamma reference voltage of the black gray level, the variable gamma reference voltage of the black gray level being varied in synchronization with the variable common voltage.

摘要翻译： 提供一种液晶显示装置及其驱动方法，其可以通过去除直流残留图像来增加显示等级。 液晶显示装置包括：用于通过用于施加公共电压的公共电极和用于施加数据电压的像素电极之间的电位差来显示灰度级的液晶显示面板; 用于产生相对于预定电平的DC公共电压纵向对称并且其电压电平以预定间隔逐步变化的可变公共电压的公共电压调节电路; 以及黑色伽马参考电压调节电路，用于将可变公共电压加到设置为黑色灰度级的伽马参考电压的偏移电压，以产生相对于黑色灰度级的伽马参考电压而变化的可变伽马参考电压， 黑色灰度级的可变伽马参考电压与可变公共电压同步地变化。

公开(公告)号：US08089447B2

公开(公告)日：2012-01-03

申请号：US12314560

申请日：2008-12-12

申请人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

发明人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

IPC分类号： G09G3/36

CPC分类号： G09G3/3614 ,  G09G3/2096 ,  G09G3/3648 ,  G09G3/3688 ,  G09G2310/0251 ,  G09G2310/08 ,  G09G2360/18

摘要： A liquid crystal display and a method of driving the same are disclosed. The liquid crystal display includes a liquid crystal display panel, a data drive circuit, a gate drive circuit, and a timing controller. The data drive circuit generates a pre-charge data voltage during pre-charge time and generates a real-charge voltage to be displayed on the liquid crystal display panel during real-charge time. The gate drive circuit supplies a first gate pulse synchronized with the pre-charge data voltage to the gate lines during the pre-charge time while shifting a gate pulse in a downward direction and an upward direction depending on an up/down signal, and then supplies a second gate pulse synchronized with the real-charge data voltage to the gate lines from a falling edge of the first gate pulse at intervals equal to or longer than scanning time of 1 line during the real-charge time.

摘要翻译： 公开了一种液晶显示器及其驱动方法。 液晶显示器包括液晶显示面板，数据驱动电路，栅极驱动电路和定时控制器。 数据驱动电路在预充电时间期间产生预充电数据电压，并且在实际充电时间期间产生要在液晶显示面板上显示的实际充电电压。 栅极驱动电路在预充电时间期间将与预充电数据电压同步的第一栅极脉冲提供给栅极线，同时根据上/下信号向下方向和向上方向移位栅极脉冲，然后 在实际充电时间期间以等于或大于1线扫描时间的间隔，从第一栅极脉冲的下降沿向栅极线提供与实际电荷数据电压同步的第二栅极脉冲。

公开(公告)号：US20100033413A1

公开(公告)日：2010-02-11

申请号：US12318162

申请日：2008-12-22

申请人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

发明人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

IPC分类号： G09G3/36

CPC分类号： G09G3/3655 ,  G09G3/3614 ,  G09G3/3696 ,  G09G2320/0204 ,  G09G2320/0247 ,  G09G2320/0673

摘要： A liquid crystal display device and a driving method thereof are provided which can increase a display grade by removing a DC residual image. The liquid crystal display device comprises: a liquid crystal display panel for displaying gray levels by a potential difference between a common electrode for applying a common voltage and pixel electrodes for applying data voltages; a common voltage regulating circuit for generating a variable common voltage which is longitudinally symmetrical with respect to a DC common voltage of a predetermined level and whose voltage level is stepwisely varied at predetermined intervals; and a black gamma reference voltage regulating circuit for adding the variable common voltage to an offset voltage set as a gamma reference voltage of a black gray level to generate a variable gamma reference voltage varying with respect to the gamma reference voltage of the black gray level, the variable gamma reference voltage of the black gray level being varied in synchronization with the variable common voltage.

摘要翻译： 提供一种液晶显示装置及其驱动方法，其可以通过去除直流残留图像来增加显示等级。 液晶显示装置包括：用于通过用于施加公共电压的公共电极和用于施加数据电压的像素电极之间的电位差来显示灰度级的液晶显示面板; 用于产生相对于预定电平的DC公共电压纵向对称并且其电压电平以预定间隔逐步变化的可变公共电压的公共电压调节电路; 以及黑色伽马参考电压调节电路，用于将可变公共电压加到设置为黑色灰度级的伽马参考电压的偏移电压，以产生相对于黑色灰度级的伽马参考电压而变化的可变伽马参考电压， 黑色灰度级的可变伽马参考电压与可变公共电压同步地变化。

公开(公告)号：US20090273553A1

公开(公告)日：2009-11-05

申请号：US12292472

申请日：2008-11-19

申请人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

发明人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

IPC分类号： G09G3/36 ,  G02F1/133

CPC分类号： G09G3/3677 ,  G09G3/2025 ,  G09G3/2092 ,  G09G3/3614 ,  G09G3/3651 ,  G09G2310/0283 ,  G09G2320/0204

摘要： A liquid crystal display and a method of driving the same are disclosed. The liquid crystal display includes a liquid crystal display panel including data lines and gate lines crossing each other and liquid crystal cells, a timing control signal generating unit, a data drive circuit supplying a data voltage to the data lines, and a gate drive circuit. The timing control signal generating unit generates a first gate timing control signal for controlling a scan direction of the liquid crystal display panel in a sequential direction and a second gate timing control signal for controlling the scan direction in a reverse sequential direction. The gate drive circuit supplies a gate pulse to the gate lines while a shift direction of the gate pulse changes in response to the first and second gate timing control signals.

摘要翻译： 公开了一种液晶显示器及其驱动方法。 液晶显示器包括液晶显示面板，包括数据线和彼此相交的栅极线和液晶单元，定时控制信号生成单元，向数据线提供数据电压的数据驱动电路以及栅极驱动电路。 定时控制信号产生单元产生用于沿顺序方向控制液晶显示面板的扫描方向的第一门定时控制信号和用于沿相反顺序方向控制扫描方向的第二门定时控制信号。 栅极驱动电路在栅极脉冲的移位方向响应于第一和第二栅极时序控制信号而改变时，向栅极线提供栅极脉冲。

公开(公告)号：US08242990B2

公开(公告)日：2012-08-14

申请号：US12318283

申请日：2008-12-23

申请人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

发明人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

IPC分类号： G09G3/36

CPC分类号： G09G3/3685 ,  G09G3/3614 ,  G09G3/3648 ,  G09G2310/0205 ,  G09G2310/027 ,  G09G2310/0289 ,  G09G2320/0204

摘要： A liquid crystal display and a method of driving the same are disclosed. The liquid crystal display includes a timing signal multiplying circuit generating a first timing signal and a second timing signal whose frequency is higher than a frequency of the first timing signal, a frame counter detecting a multiplied frame period to be driven at the frequency of the second timing signal, a data processing circuit allowing a frequency of digital data output during the multiplied frame period to be higher than a frequency of the digital data output during a frame period except the multiplied frame period, a timing control signal generating circuit generating a polarity control signal for controlling polarities of the digital data, and a polarity control signal inverting circuit that increases a frequency of the polarity control signal during the multiplied frame period to generate an inverse polarity control signal.

摘要翻译： 公开了一种液晶显示器及其驱动方法。 液晶显示器包括产生第一定时信号的定时信号乘法电路和频率高于第一定时信号的频率的第二定时信号，检测要以第二定时信号频率驱动的相乘帧周期的帧计数器 定时信号，允许在相乘的帧周期期间输出的数字数据的频率高于除了相乘的帧周期之外的帧周期期间输出的数字数据的频率的数据处理电路;定时控制信号产生电路，其产生极性控制 用于控制数字数据的极性的信号;以及极性控制信号反相电路，其在倍增的帧周期期间增加极性控制信号的频率，以产生反极性控制信号。

公开(公告)号：US08098221B2

公开(公告)日：2012-01-17

申请号：US12318153

申请日：2008-12-22

申请人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

发明人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

IPC分类号： G09G3/36

CPC分类号： G09G3/3655 ,  G09G2320/0204 ,  G09G2320/0257

摘要： A liquid crystal display (LCD) capable of improving display quality and a method of driving the same are provided. The LCD comprises an LCD panel including a plurality of data lines and gate lines and liquid crystal cells arranged in a matrix at crossings of the gate lines and the data lines, a driving circuit for supplying a data voltage to the data lines and for supplying a scan pulse to the gate lines, a timing controller for generating a gate start pulse for indicating a start horizontal line in which scanning starts in a one frame period where one screen is displayed, a control clock generator for counting the number of frames using the gate start pulse and for generating a control clock whenever an accumulated count value becomes a multiple of a predetermined value, and a common voltage generating circuit for generating control data of a specific bit based on the control clock and for generating a common voltage whose level varies in stages per predetermined interval using the control data to supply the common voltage to the LCD panel.

摘要翻译： 提供了能够提高显示质量的液晶显示器（LCD）及其驱动方法。 液晶显示器包括一个LCD面板，包括多条数据线和栅极线以及在栅极线和数据线的交叉处以矩阵排列的液晶单元，用于向数据线提供数据电压并用于提供数据线的驱动电路 扫描脉冲到栅极线，定时控制器，用于产生用于指示在显示一个屏幕的一个帧周期内扫描开始的开始水平行的栅极起始脉冲;控制时钟发生器，用于使用该栅极对帧数进行计数 起始脉冲，并且每当累积计数值变为预定值的倍数时产生控制时钟;以及公共电压发生电路，用于基于控制时钟产生特定位的控制数据，并产生其电平变化的公共电压 使用控制数据将预定间隔的级数提供给LCD面板。

公开(公告)号：US20090267878A1

公开(公告)日：2009-10-29

申请号：US12318283

申请日：2008-12-23

申请人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

发明人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

IPC分类号： G09G3/36

CPC分类号： G09G3/3685 ,  G09G3/3614 ,  G09G3/3648 ,  G09G2310/0205 ,  G09G2310/027 ,  G09G2310/0289 ,  G09G2320/0204

摘要： A liquid crystal display and a method of driving the same are disclosed. The liquid crystal display includes a timing signal multiplying circuit generating a first timing signal and a second timing signal whose frequency is higher than a frequency of the first timing signal, a frame counter detecting a multiplied frame period to be driven at the frequency of the second timing signal, a data processing circuit allowing a frequency of digital data output during the multiplied frame period to be higher than a frequency of the digital data output during a frame period except the multiplied frame period, a timing control signal generating circuit generating a polarity control signal for controlling polarities of the digital data, and a polarity control signal inverting circuit that increases a frequency of the polarity control signal during the multiplied frame period to generate an inverse polarity control signal.

摘要翻译： 公开了一种液晶显示器及其驱动方法。 液晶显示器包括产生第一定时信号的定时信号乘法电路和频率高于第一定时信号的频率的第二定时信号，检测要以第二定时信号频率驱动的相乘帧周期的帧计数器 定时信号，允许在相乘的帧周期期间输出的数字数据的频率高于除了相乘的帧周期之外的帧周期期间输出的数字数据的频率的数据处理电路;定时控制信号产生电路，其产生极性控制 用于控制数字数据的极性的信号;以及极性控制信号反相电路，其在倍增的帧周期期间增加极性控制信号的频率，以产生反极性控制信号。

公开(公告)号：US20090167664A1

公开(公告)日：2009-07-02

申请号：US12277132

申请日：2008-11-24

申请人： Hongsung SONG ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

发明人： Hongsung SONG ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

IPC分类号： G09G3/36

CPC分类号： G09G3/3614 ,  G09G2320/0247

摘要： A liquid crystal display and a method for driving the same are disclosed. The liquid crystal display includes a timing controller generating a polarity control signal. A logic inverting period of the polarity control signal during frame periods ranging from an Nth frame period among M frame periods to 2 to 4 frame periods following the Nth frame period is longer than a logic inverting period of the polarity control signal in the other frame periods, where N is an integer equal to or larger than 4 and M is larger than N. The liquid crystal cells in one frame period of the M frame periods are charged to the data voltage whose a polarity is opposite to a polarity of the data voltage in a previous frame period of one frame period.

摘要翻译： 公开了一种液晶显示器及其驱动方法。 液晶显示器包括产生极性控制信号的定时控制器。 在从第M帧周期的第N帧周期到第N帧周期之后的2到4个帧周期的帧周期期间，极性控制信号的逻辑反相周期比其他帧周期中的极性控制信号的逻辑反相周期长 其中N是等于或大于4并且M大于N的整数.M帧周期的一个帧周期中的液晶单元被充电到极性与数据电压的极性相反的数据电压 在一帧周期的前一帧周期内。

公开(公告)号：US08063867B2

公开(公告)日：2011-11-22

申请号：US12318280

申请日：2008-12-23

申请人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Subyuk Jang

发明人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Subyuk Jang

IPC分类号： G09G3/36

CPC分类号： G09G3/3614 ,  G09G3/3648 ,  G09G3/3677 ,  G09G2310/08 ,  G09G2320/0204

摘要： A liquid crystal display and a method of driving the same are disclosed. The liquid crystal display includes a data drive circuit that supplies a data voltage, whose a polarity is periodically inverted, to the data lines, a gate drive circuit, and a timing controller. The gate drive circuit sequentially supplies a first gate pulse synchronized with a first data voltage to gate lines, and sequentially supplies a second gate pulse synchronized with a second data voltage having a polarity opposite a polarity of the first data voltage, to the gate lines. The timing controller generates a pre-gate start pulse for controlling an output of the first gate pulse during a blank period, and then generates a real gate start pulse for controlling an output of the second gate pulse during an initial period of a frame period following the blank period.

摘要翻译： 公开了一种液晶显示器及其驱动方法。 液晶显示器包括数据驱动电路，其将极性被周期性反转的数据电压提供给数据线，栅极驱动电路和定时控制器。 栅极驱动电路依次向栅极线提供与第一数据电压同步的第一栅极脉冲，并且将与第一数据电压极性相反极性的第二数据电压同步的第二栅极脉冲依次提供给栅极线。 定时控制器产生预栅极起始脉冲，用于在空白周期期间控制第一栅极脉冲的输出，然后产生实际栅极起始脉冲，用于在帧周期跟随的初始周期期间控制第二栅极脉冲的输出 空白期。

公开(公告)号：US20090273557A1

公开(公告)日：2009-11-05

申请号：US12318280

申请日：2008-12-23

申请人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Subyuk Jang

发明人： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Subyuk Jang

IPC分类号： G09G3/36

CPC分类号： G09G3/3614 ,  G09G3/3648 ,  G09G3/3677 ,  G09G2310/08 ,  G09G2320/0204

摘要： A liquid crystal display and a method of driving the same are disclosed. The liquid crystal display includes a data drive circuit that supplies a data voltage, whose a polarity is periodically inverted, to the data lines, a gate drive circuit, and a timing controller. The gate drive circuit sequentially supplies a first gate pulse synchronized with a first data voltage to gate lines, and sequentially supplies a second gate pulse synchronized with a second data voltage having a polarity opposite a polarity of the first data voltage, to the gate lines. The timing controller generates a pre-gate start pulse for controlling an output of the first gate pulse during a blank period, and then generates a real gate start pulse for controlling an output of the second gate pulse during an initial period of a frame period following the blank period.

摘要翻译： 公开了一种液晶显示器及其驱动方法。 液晶显示器包括数据驱动电路，其将极性被周期性反转的数据电压提供给数据线，栅极驱动电路和定时控制器。 栅极驱动电路依次向栅极线提供与第一数据电压同步的第一栅极脉冲，并且将与第一数据电压极性相反极性的第二数据电压同步的第二栅极脉冲依次提供给栅极线。 定时控制器产生预栅极起始脉冲，用于在空白周期期间控制第一栅极脉冲的输出，然后产生实际栅极起始脉冲，用于在帧周期跟随的初始周期期间控制第二栅极脉冲的输出 空白期。