公开(公告)号：US20110037760A1

公开(公告)日：2011-02-17

申请号：US12830971

申请日：2010-07-06

Applicant: Jongwoo Kim ,  Hyuntaek Nam ,  Suhyuk Jang

Inventor： Jongwoo Kim ,  Hyuntaek Nam ,  Suhyuk Jang

IPC: G09G5/00 ,  G09G3/36

CPC classification number: G09G3/3614 ,  G09G3/3611 ,  G09G2320/0247

Abstract: A liquid crystal display includes: a liquid crystal display panel including data lines and gate lines crossing each other; a timing controller that maps data of an input image to polarity patterns of 1-dot inversion and 2-dot inversion, counts the number of positive data and the number of negative data, determines whether any one of the positive data and negative data becomes dominant or not based on a difference between the counted numbers, and selects either one of the 1-dot and 2-dot inversions; a data driving circuit that converts the data of the input image into data voltages to be supplied to the data lines and inverts the polarity of the data voltages by the selected dot inversion; and a gate driving circuit that sequentially supplies gate pulses synchronized with the data voltages to the gate lines.

Abstract translation: 液晶显示器包括：包括彼此交叉的数据线和栅极线的液晶显示面板; 将输入图像的数据映射到1点反转和2点反转的极性图案的定时控制器，对正数据的数量和负数据的数量进行计数，确定正数据和负数据中的任何一个是否为主要 或者不是基于计数的数量之间的差异，并且选择1点和2点反转之一; 数据驱动电路，其将输入图像的数据转换成数据电压以提供给数据线，并通过所选择的点反转使数据电压的极性反转; 以及栅极驱动电路，其向栅极线顺序地提供与数据电压同步的栅极脉冲。

公开(公告)号：US20100033413A1

公开(公告)日：2010-02-11

申请号：US12318162

申请日：2008-12-22

Applicant: Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

Inventor： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

IPC: G09G3/36

CPC classification number: G09G3/3655 ,  G09G3/3614 ,  G09G3/3696 ,  G09G2320/0204 ,  G09G2320/0247 ,  G09G2320/0673

Abstract: 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.

Abstract translation: 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

Applicant: Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

Inventor： Hongsung Song ,  Woongki Min ,  Yonggi Son ,  Suhyuk Jang

IPC: G09G3/36 ,  G02F1/133

CPC classification number: G09G3/3677 ,  G09G3/2025 ,  G09G3/2092 ,  G09G3/3614 ,  G09G3/3651 ,  G09G2310/0283 ,  G09G2320/0204

Abstract: 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.

Abstract translation: 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：US20090146934A1

公开(公告)日：2009-06-11

申请号：US12292693

申请日：2008-11-24

Applicant: Jincheol Hong ,  Sungjo Koo ,  Suhyuk Jang

Inventor： Jincheol Hong ,  Sungjo Koo ,  Suhyuk Jang

IPC: G09G3/36

CPC classification number: G09G3/3648 ,  G09G2310/061 ,  G09G2320/103 ,  G09G2340/0435

Abstract: A liquid crystal display and driving method thereof are disclosed. The liquid crystal display according to an embodiment of the invention includes a liquid crystal panel having liquid crystal cells in a matrix array at crossings of data lines and gate lines; a timing controller for receiving a digital video data and synchronous signals, and generating a source output enable signal, a first gate start pulse, a second gate start pulse having a pulse width different from that of the first gate start pulse, a gate shift clock, a first gate output enable signal and a second gate output enable signal; a data driving circuit for providing a data voltage to the data lines in response to a first logic value of the source output enable signal, and any one black gray voltage of a charge share voltage and a precharge voltage to the data lines in response to a second logic value of the source output enable signal; and a gate driving circuit for providing a first gate pulse in synchronization with the data voltage and a second gate pulse in synchronization with the black gray voltage to the gate lines, in response to the first gate start pulse, the second gate start pulse, the gate shift clock, the first gate output enable signal and the second gate output enable signal.

Abstract translation: 公开了一种液晶显示器及其驱动方法。 根据本发明实施例的液晶显示器包括液晶面板，其具有在数据线和栅极线交叉处的矩阵阵列中的液晶单元; 定时控制器，用于接收数字视频数据和同步信号，并产生源输出使能信号，第一栅极起始脉冲，具有不同于第一栅极起始脉冲的脉冲宽度的第二栅极起始脉冲;栅极移位时钟 第一栅极输出使能信号和第二栅极输出使能信号; 数据驱动电路，用于响应于源输出使能信号的第一逻辑值以及响应于数据线的电荷共享电压和预充电电压的任何一个黑灰色电压而向数据线提供数据电压 源输出使能信号的第二逻辑值; 以及栅极驱动电路，用于响应于第一栅极起始脉冲，第二栅极起始脉冲，第二栅极起始脉冲，第二栅极起始脉冲，第二栅极起始脉冲，第二栅极起始脉冲，第二栅极起始脉冲，第二栅极起始脉冲， 门移位时钟，第一栅极输出使能信号和第二栅极输出使能信号。

公开(公告)号：US20090002291A1

公开(公告)日：2009-01-01

申请号：US12003747

申请日：2007-12-31

Applicant: Sungjo Koo ,  Suhyuk Jang ,  Jongwoo Kim

Inventor： Sungjo Koo ,  Suhyuk Jang ,  Jongwoo Kim

IPC: G09G3/36

CPC classification number: G09G3/3688 ,  G09G3/3614 ,  G09G2310/0248 ,  G09G2330/021 ,  G09G2330/023 ,  G09G2360/16

Abstract: A liquid crystal display includes a liquid crystal display panel including a plurality of data lines, a plurality of gate lines crossing the plurality of data lines, and a plurality of liquid crystal cells, a timing controller to determine gray levels of input digital video data and a time when a polarity of a data voltage to be supplied to the data lines is inverted, and to generate a dynamic charge share control signal when the gray level of the data voltage is changed from a white gray level to a black gray level and the polarity of the data voltage is inverted, a data driving circuit to convert the digital video data from the timing controller into the data voltage, changing the polarity of the data voltage, and supplying any one of a common voltage and a charge share voltage to the data lines in response to the dynamic charge share control signal, and a gate driving circuit to sequentially supply scan pulses to the gate lines under the control of the timing controller.

Abstract translation: 液晶显示器包括：液晶显示面板，包括多条数据线，多条栅极线与多条数据线交叉;以及多个液晶单元，定时控制器，用于确定输入数字视频数据的灰度级;以及 当提供给数据线的数据电压的极性反转时，并且当数据电压的灰度级从白色灰度级变为黑色灰度级时产生动态电荷共享控制信号， 数据电压的极性反转，数据驱动电路将来自定时控制器的数字视频数据转换为数据电压，改变数据电压的极性，并将公共电压和电荷共享电压中的任一个提供给 响应于动态电荷共享控制信号的数据线;以及栅极驱动电路，用于在定时控制器的控制下顺序向扫描脉冲提供扫描脉冲。