公开(公告)号：US08362989B2

公开(公告)日：2013-01-29

申请号：US12011970

申请日：2008-01-29

申请人： Chien-Fan Tung ,  Shun-Ming Huang

发明人： Chien-Fan Tung ,  Shun-Ming Huang

IPC分类号： G09G3/36 ,  G09G3/18 ,  G06F3/038

CPC分类号： G09G3/3655 ,  G09G3/3614 ,  G09G2320/0204

摘要： An exemplary liquid crystal display device (20) includes a plurality of pixel electrode (26), a common electrode (22), a data driving circuit (33) configured for providing data voltages to each pixel electrode, and a common voltage generating circuit (34) configured for providing a common voltage to the common electrode. The common voltage generating circuit includes a hysteresis comparator circuit (341) and a direct current voltage adjusting circuit (343). The hysteresis comparator circuit is configured for providing an alternating current voltage, and the direct current voltage adjusting circuit is configured for providing a direct current voltage with periodic change. The direct current voltage is configured for superimposing on the alternating current voltage to form a common voltage, and an absolute value of the common voltage changes only slightly within a predetermined range from each frame to the next adjacent frame. A method for driving the liquid crystal display device is also provided.

摘要翻译： 示例性液晶显示装置（20）包括多个像素电极（26），公共电极（22），被配置为向每个像素电极提供数据电压的数据驱动电路（33）和公共电压产生电路 34），其被配置为向所述公共电极提供公共电压。 公共电压产生电路包括磁滞比较器电路（341）和直流电压调节电路（343）。 迟滞比较器电路被配置为提供交流电压，并且直流电压调节电路被配置为提供具有周期性变化的直流电压。 直流电压被配置为叠加在交流电压上以形成公共电压，并且公共电压的绝对值仅在从每个帧到下一相邻帧的预定范围内稍微改变。 还提供了一种用于驱动液晶显示装置的方法。

公开(公告)号：US08059079B2

公开(公告)日：2011-11-15

申请号：US12001704

申请日：2007-12-11

申请人： Chien-Fan Tung ,  Shun-Ming Huang

发明人： Chien-Fan Tung ,  Shun-Ming Huang

IPC分类号： G09G3/36

CPC分类号： G09G3/3655 ,  G09G2320/0204

摘要： An exemplary liquid crystal display (20) includes a plurality of pixel units (240) each including a pixel electrode (26) and a common electrode (22), a data driving circuit (33) providing a plurality of data voltages to each pixel electrode, a common voltage generating circuit (34) providing a common voltage to each common electrode, and a gamma voltage generating circuit (35) providing gamma voltages to the data driving circuit. The plurality of pixel units are arranged in a matrix. The voltage difference between the data voltage and the common voltage in each pixel unit is a sum of a main voltage and an auxiliary voltage with periodical change. An absolute value of the main voltage is constant. An absolute value of the auxiliary voltage is less than the absolute value of the main voltage. A sum of the auxiliary voltage is zero in a minimum period.

摘要翻译： 示例性液晶显示器（20）包括多个像素单元（240），每个像素单元包括像素电极（26）和公共电极（22），数据驱动电路（33）为每个像素电极提供多个数据电压 ，向每个公共电极提供公共电压的公共电压产生电路（34）和向数据驱动电路提供伽马电压的伽玛电压产生电路（35）。 多个像素单元被布置成矩阵。 每个像素单元中的数据电压和公共电压之间的电压差是主电压和具有周期性变化的辅助电压之和。 主电压的绝对值是恒定的。 辅助电压的绝对值小于主电压的绝对值。 辅助电压的总和在最小时间内为零。

公开(公告)号：US20080204121A1

公开(公告)日：2008-08-28

申请号：US12072837

申请日：2008-02-28

申请人： Shun-Ming Huang ,  Chien-Fan Tung

发明人： Shun-Ming Huang ,  Chien-Fan Tung

IPC分类号： G05F3/02 ,  G09G3/36

CPC分类号： G09G3/3655 ,  G09G3/3614

摘要： An exemplary voltage generating circuit (34) includes a first pulse generator (341) configured to provide a first pulse signal having a fixed duty ratio, a second pulse generator (342) configured to provide a second pulse signal having a variable duty ratio, and a charge pump (343) electrically coupled to the first pulse generator and the second pulse generator. The charge pump outputs a voltage signal according to the first and second pulse signals. When the voltage signal is adjusted, the duty ratio of the second pulse signal is modulated by the second pulse generator, such that the voltage signal outputted by the charge bump is adjusted to have a corresponding value. A liquid crystal display (300) using the voltage generating circuit is also provided in the present invention.

摘要翻译： 示例性电压产生电路（34）包括被配置为提供具有固定占空比的第一脉冲信号的第一脉冲发生器（341），被配置为提供具有可变占空比的第二脉冲信号的第二脉冲发生器（342），以及 电耦合到第一脉冲发生器和第二脉冲发生器的电荷泵（343）。 电荷泵根据第一和第二脉冲信号输出电压信号。 当调整电压信号时，由第二脉冲发生器调制第二脉冲信号的占空比，使得由电荷凸块输出的电压信号被调整为具有相应的值。 在本发明中也提供使用电压产生电路的液晶显示器（300）。

公开(公告)号：US08299999B2

公开(公告)日：2012-10-30

申请号：US13279351

申请日：2011-10-24

申请人： Chien-Fan Tung ,  Shun-Ming Huang

发明人： Chien-Fan Tung ,  Shun-Ming Huang

IPC分类号： G09G3/36

CPC分类号： G09G3/3655 ,  G09G2320/0204

摘要： An exemplary liquid crystal display includes a plurality of pixel units each including a pixel electrode for receiving data voltages and a common electrode for receiving a common voltage having a constant value. The data voltages applied to each pixel electrodes are equal to a sum of a main data voltage having a square waveform and an auxiliary voltage that is periodically changed at intervals each formed by four continuous frames. An absolute value of the auxiliary voltage is less than a voltage difference between the main data voltage and the common voltage, a sum of the auxiliary voltage is zero in a minimum period.

摘要翻译： 示例性液晶显示器包括多个像素单元，每个像素单元包括用于接收数据电压的像素电极和用于接收具有恒定值的公共电压的公共电极。 施加到每个像素电极的数据电压等于具有由四个连续帧形成的间隔周期性地改变的方波和辅助电压的主数据电压之和。 辅助电压的绝对值小于主数据电压和公共电压之间的电压差，辅助电压的和在最小时间内为零。

公开(公告)号：US20080180419A1

公开(公告)日：2008-07-31

申请号：US12011970

申请日：2008-01-29

申请人： Chien-Fan Tung ,  Shun-Ming Huang

发明人： Chien-Fan Tung ,  Shun-Ming Huang

IPC分类号： G06F3/038 ,  G09G3/36

CPC分类号： G09G3/3655 ,  G09G3/3614 ,  G09G2320/0204

摘要： An exemplary liquid crystal display device (20) includes a plurality of pixel electrode (26), a common electrode (22), a data driving circuit (33) configured for providing data voltages to each pixel electrode, and a common voltage generating circuit (34) configured for providing a common voltage to the common electrode. The common voltage generating circuit includes a hysteresis comparator circuit (341) and a direct current voltage adjusting circuit (343). The hysteresis comparator circuit is configured for providing an alternating current voltage, and the direct current voltage adjusting circuit is configured for providing a direct current voltage with periodic change. The direct current voltage is configured for superimposing on the alternating current voltage to form a common voltage, and an absolute value of the common voltage changes only slightly within a predetermined range from each frame to the next adjacent frame. A method for driving the liquid crystal display device is also provided.

摘要翻译： 示例性液晶显示装置（20）包括多个像素电极（26），公共电极（22），被配置为向每个像素电极提供数据电压的数据驱动电路（33）和公共电压产生电路 34），其被配置为向所述公共电极提供公共电压。 公共电压产生电路包括磁滞比较器电路（341）和直流电压调节电路（343）。 迟滞比较器电路被配置为提供交流电压，并且直流电压调节电路被配置为提供具有周期性变化的直流电压。 直流电压被配置为叠加在交流电压上以形成公共电压，并且公共电压的绝对值仅在从每个帧到下一相邻帧的预定范围内稍微改变。 还提供了一种用于驱动液晶显示装置的方法。

公开(公告)号：US08106871B2

公开(公告)日：2012-01-31

申请号：US12005726

申请日：2007-12-28

申请人： Chien-Fan Tung ,  Shun-Ming Huang ,  Sha Feng

发明人： Chien-Fan Tung ,  Shun-Ming Huang ,  Sha Feng

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

CPC分类号： G09G3/3648 ,  G09G2310/063 ,  G09G2330/026 ,  G09G2330/027

摘要： A liquid crystal display (1) includes a liquid crystal panel (12) including a number of thin film transistors (123), a timing control circuit (16), a common voltage generating circuit (14) and a gamma circuit (13). The timing control circuit is configured for generating timing signals. The common voltage generating circuit is configured for generating a common voltage. The gamma circuit is configured for generating gray-scale voltages. When the liquid crystal panel is powered on, the common voltage is applied to the liquid crystal panel and reaches a predetermined value before the gray-scale voltages are applied to the liquid crystal panel and comes to predetermined values. And when liquid crystal panel is powered off the common voltage and the gray-scale voltages drops to 0V simultaneously by control of the common voltage generating circuit and the gamma circuit with the thin film transistors switched on.

摘要翻译： 液晶显示器（1）包括具有多个薄膜晶体管（123），定时控制电路（16），公共电压产生电路（14）和伽马电路（13）的液晶面板（12）。 定时控制电路被配置用于产生定时信号。 公共电压产生电路被配置为产生公共电压。 γ电路被配置为产生灰度电压。 当液晶面板通电时，在将灰度电压施加到液晶面板之前，将公共电压施加到液晶面板并达到预定值，并达到预定值。 当液晶面板通过控制公共电压产生电路和接通薄膜晶体的伽马电路同时降低公共电压，灰度电压同时降至0V。

公开(公告)号：US20080174578A1

公开(公告)日：2008-07-24

申请号：US12001704

申请日：2007-12-11

申请人： Chien-Fan Tung ,  Shun-Ming Huang

发明人： Chien-Fan Tung ,  Shun-Ming Huang

IPC分类号： G06F3/038 ,  G09G3/36

CPC分类号： G09G3/3655 ,  G09G2320/0204

摘要： An exemplary liquid crystal display (20) includes a plurality of pixel units (240) each including a pixel electrode (26) and a common electrode (22), a data driving circuit (33) providing a plurality of data voltages to each pixel electrode, a common voltage generating circuit (34) providing a common voltage to each common electrode, and a gamma voltage generating circuit (35) providing gamma voltages to the data driving circuit. The plurality of pixel units are arranged in a matrix. The voltage difference between the data voltage and the common voltage in each pixel unit is a sum of a main voltage and an auxiliary voltage with periodical change. An absolute value of the main voltage is constant. An absolute value of the auxiliary voltage is less than the absolute value of the main voltage. A sum of the auxiliary voltage is zero in a minimum period.

摘要翻译： 示例性液晶显示器（20）包括多个像素单元（240），每个像素单元包括像素电极（26）和公共电极（22），数据驱动电路（33）为每个像素电极提供多个数据电压 ，向每个公共电极提供公共电压的公共电压产生电路（34）和向数据驱动电路提供伽马电压的伽玛电压产生电路（35）。 多个像素单元被布置成矩阵。 每个像素单元中的数据电压和公共电压之间的电压差是主电压和具有周期性变化的辅助电压之和。 主电压的绝对值是恒定的。 辅助电压的绝对值小于主电压的绝对值。 辅助电压的总和在最小时间内为零。

公开(公告)号：US20080158126A1

公开(公告)日：2008-07-03

申请号：US12005726

申请日：2007-12-28

申请人： Chien-Fan Tung ,  Shun-Ming Huang ,  Sha Feng

发明人： Chien-Fan Tung ,  Shun-Ming Huang ,  Sha Feng

IPC分类号： G09G3/36

CPC分类号： G09G3/3648 ,  G09G2310/063 ,  G09G2330/026 ,  G09G2330/027

摘要： A liquid crystal display (1) includes a liquid crystal panel (12) including a number of thin film transistors (123), a timing control circuit (16), a common voltage generating circuit (14) and a gamma circuit (13). The timing control circuit is configured for generating timing signals. The common voltage generating circuit is configured for generating a common voltage. The gamma circuit is configured for generating gray-scale voltages. When the liquid crystal panel is powered on, the common voltage is applied to the liquid crystal panel and reaches a predetermined value before the gray-scale voltages are applied to the liquid crystal panel and comes to predetermined values. And when liquid crystal panel is powered off the common voltage and the gray-scale voltages drops to 0V simultaneously by control of the common voltage generating circuit and the gamma circuit with the thin film transistors switched on.

摘要翻译： 液晶显示器（1）包括具有多个薄膜晶体管（123），定时控制电路（16），公共电压产生电路（14）和伽马电路（13）的液晶面板（12）。 定时控制电路被配置用于产生定时信号。 公共电压产生电路被配置为产生公共电压。 γ电路被配置为产生灰度电压。 当液晶面板通电时，在将灰度电压施加到液晶面板之前，将公共电压施加到液晶面板并达到预定值，并达到预定值。 当液晶面板通过控制公共电压产生电路和接通薄膜晶体的伽马电路同时降低公共电压，灰度电压同时降至0V。

公开(公告)号：US20080122826A1

公开(公告)日：2008-05-29

申请号：US11998023

申请日：2007-11-27

申请人： Chien-Fan Tung ,  Deng-Tzung Tang ,  Shun-Ming Huang

发明人： Chien-Fan Tung ,  Deng-Tzung Tang ,  Shun-Ming Huang

IPC分类号： G09G5/00 ,  G09G3/36

CPC分类号： G09G3/3655

摘要： An exemplary LCD (30) includes a liquid crystal panel (31) configured for displaying images and a driving circuit (30). The driving circuit includes a pulse generator configured for providing a pulse signal, and a charge pump (315) configured for provide a common voltage to the liquid crystal panel according to the pulse signal. The common voltage is adjusted by adjusting a duty ratio of the signal pulse, and the precision of adjustment of the common voltage is determined according to a resolution of the pulse signal.

摘要翻译： 示例性LCD（30）包括被配置为显示图像的液晶面板（31）和驱动电路（30）。 驱动电路包括：脉冲发生器，被配置为提供脉冲信号;以及电荷泵，被配置为根据脉冲信号向液晶面板提供公共电压。 通过调整信号脉冲的占空比来调节公共电压，并且根据脉冲信号的分辨率来确定公共电压的调整精度。

公开(公告)号：US20070236566A1

公开(公告)日：2007-10-11

申请号：US11784847

申请日：2007-04-09

申请人： Kai-Chieh Chan ,  Chien-Fan Tung ,  Deng-Tzung Tang

发明人： Kai-Chieh Chan ,  Chien-Fan Tung ,  Deng-Tzung Tang

IPC分类号： H04N7/18

CPC分类号： H04N3/127 ,  G09G3/3611 ,  G09G5/39 ,  G09G2320/0252 ,  G09G2340/02 ,  G09G2340/16 ,  G09G2360/18 ,  G09G2370/08

摘要： An exemplary liquid crystal display (3) includes a matrix-converting circuit (316) and an inverse-matrix-converting circuit (327). The matrix-converting circuit receives an RGB (red green blue) signal, and converts the RGB signal to a YCbCr signal. The inverse-matrix-converting circuit converts the YCbCr signal back to the RGB signal. The liquid crystal display requires only a relatively small amount of bandwidth for signal transmission. A related method of transmitting signals in a liquid crystal display is also provided.

摘要翻译： 示例性液晶显示器（3）包括矩阵转换电路（316）和逆矩阵转换电路（327）。 矩阵转换电路接收RGB（红绿蓝）信号，并将RGB信号转换为YCbCr信号。 逆矩阵转换电路将YCbCr信号转换回RGB信号。 液晶显示器仅需要相对较小量的带宽用于信号传输。 还提供了一种在液晶显示器中传输信号的相关方法。