公开(公告)号：EP1435017A4

公开(公告)日：2006-12-20

申请号：EP01983843

申请日：2001-11-06

申请人： SAMSUNG ELECTRO MECH

发明人： LEE CHANG-HUN ,  LYU JAE-JIN ,  CHO HEE-YOUNG ,  CHANG HAK-SUN

IPC分类号： G02F1/133 ,  G02F1/139 ,  G09G3/20 ,  G09G3/36

CPC分类号： G09G3/3655 ,  G02F1/1395 ,  G09G2300/0491 ,  G09G2310/0245 ,  G09G2310/061 ,  G09G2330/026

摘要： The present invention discloses a liquid crystal display and a driving method thereof to speed up a bend alignment at an initial operation such as right after power on in the liquid crystal display with OCB mode. According to the present invention, the LCD, which includes a LCD panel, a source driver outputting image signals and a gate driver sequentially outputting scanning signals, at an initial operation, is controlled to output externial bias voltages to common electrode lines and simultaneously to stop the driving of the gate driver and the source driver, according as a first time passes, is controlled to output specific common electrode voltages thereto instead of the external bias voltages and simultaneously to perform a driving of the source driver and the gate driver. As a result, at an initial operation, by applying high-level bias voltages instead of the common electrode voltages to the common electode lines and simultaneously stopping the driving of the gate driver, the source driver and a back light, the speed of the initial bend alignment of a liquid crystal with OCB mode can be made to be high.

公开(公告)号：EP1148375A4

公开(公告)日：2005-08-17

申请号：EP00969911

申请日：2000-10-19

申请人： MATSUSHITA ELECTRIC IND CO LTD

发明人： NAKAMURA MIKA ,  ADACHI KATSUMI ,  KAWASAKI KIYOHIRO ,  HATTORI KATSUJI

IPC分类号： G02F1/1333 ,  G02F1/1362 ,  G02F1/139 ,  G09G3/36 ,  G02F1/137 ,  G02F1/133

CPC分类号： G02F1/1395 ,  G02F1/133707 ,  G02F2001/13629 ,  G09G3/3648 ,  G09G3/3659 ,  G09G2300/0491 ,  G09G2300/0876 ,  G09G2310/061 ,  G09G2320/0219

摘要： A liquid crystal panel quick in response and wide in field of vision, adapted to transfer a liquid crystal called an OCB type to bend orientation in a short time, wherein a period of time is provided in which a potential difference higher than that at the time of a normal image display is continuously applied between the gate line of the liquid crystal panel and the counter electrode or between a pixel electrode and the counter electrode. Further, ingenious ideas have been put into the period of time for the continuous application of a potential difference and into the construction of pixels.

摘要翻译： 为了提供一种能够在短时间内将液晶的转变成为弯曲结构的高反应性，宽视角的液晶面板，其中电位差 高于正常图像显示周期的栅极线和对置电极之间或像素电极与液晶面板的相对电极之间。 而且，在它们之间连续施加电位差和图像元素的结构的时期也进行连接。

公开(公告)号：EP1441326A1

公开(公告)日：2004-07-28

申请号：EP02802023.8

申请日：2002-10-17

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

发明人： ARIMOTO, Katsuyuki ,  OHTA, Yoshihito ,  KOBAYASHI, Takahiro ,  MURAO, Tsugio

IPC分类号： G09G3/36 ,  G09G3/20 ,  G02F1/133

CPC分类号： G09G5/008 ,  G09G3/3648 ,  G09G5/005 ,  G09G5/006 ,  G09G2300/0486 ,  G09G2300/0491 ,  G09G2310/0205 ,  G09G2310/061 ,  G09G2320/0247 ,  G09G2320/0261 ,  G09G2340/0421

摘要： A frequency converting section (101), which is included in a liquid crystal display apparatus, generates an output video signal by inserting one non-image signal, which is to be concurrently written into pixels on L (L is an integer equal to or greater than two) gate lines of the liquid crystal panel, for one line, between image signals composing an input video signal, for corresponding L lines, and adjusting a number of horizontal scanning periods of the output video signal in a vertical blanking period so that a number of horizontal scanning periods composing one frame period is (L+1)×(2N+1) (N is an integer). Thus, when anti-back-transition driving is performed using a liquid crystal panel in OCB mode, it is possible to minimize increase in a driving frequency, prevent irregularity of brightness caused by AC driving of the liquid crystal panel, and reduce a cost.

摘要翻译： 包括在液晶显示装置中的频率转换部分（101）通过将要被同时写入的一个非图像信号插入L上的像素（L是等于或大于0的整数）来产生输出视频信号 对于一行，在构成输入视频信号的图像信号之间，对于相应的L行，并且在垂直消隐周期中调整输出视频信号的水平扫描周期的数量，使得液晶面板的两条栅极线 组成一个帧周期的水平扫描周期数是（L + 1）×（2N + 1）（N是整数）。 因此，在OCB模式下使用液晶面板进行防逆转驱动的情况下，能够使驱动频率的增加最小化，防止由液晶面板的AC驱动引起的亮度不均匀，并且降低成本。

公开(公告)号：EP1229510A3

公开(公告)日：2002-11-20

申请号：EP02009150.0

申请日：2000-12-22

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

发明人： Hattori, Katsuji ,  Ishihara, Shoichi ,  Uemura, Tsuyoshi ,  Nakao, Kenji ,  Tanaka, Yoshinori ,  Tsuda, Keisuke ,  Numata, Yukio ,  Nakamura, Mika ,  Kobayashi, Junichi

IPC分类号： G09G3/36 ,  G02F1/1362

CPC分类号： G09G3/3611 ,  G02F1/134336 ,  G02F1/1395 ,  G09G3/3406 ,  G09G3/3648 ,  G09G3/3651 ,  G09G2300/0491 ,  G09G2310/024 ,  G09G2310/06 ,  G09G2310/063 ,  G09G2310/065 ,  G09G2310/08 ,  G09G2320/041 ,  G09G2330/021 ,  G09G2330/022 ,  G09G2330/026

摘要： There are disclosed methods for driving liquid crystal display apparatuses for certainly completing in a short time to performing a transition of liquid crystal molecules to a displayable alignment in liquid crystal display apparatuses such that an initial alignment of the liquid crystal molecules is different from the displayable alignment, typically an optically compensated bend mode liquid crystal display apparatus. Avoltage is applied to a liquid crystal layer until display area in the liquid crystal layer is transformed to the displayable alignment. After the completion of the transition, a backlight is switched on to shift to a display-driving mode. In order to complete the transition in a short time, voltage pulse under the conditions (such as a frequency and a voltage value) determined in accordance with a temperature of a liquid crystal panel is applied to the liquid crystal layer.

公开(公告)号：EP1118900A1

公开(公告)日：2001-07-25

申请号：EP99940672.1

申请日：1999-09-03

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

发明人： HATTORI, Katsuji ,  ISHIHARA, Shoichi ,  KUBOTA, Hirofumi ,  HATTA, Shin-ichiro ,  ADACHI, Katsumi ,  TANAKA, Yoshinori

IPC分类号： G02F1/133 ,  G02F1/1337 ,  G02F1/1343 ,  G02F1/139 ,  G02F1/1333

CPC分类号： G09G3/3611 ,  G02F1/133707 ,  G02F1/134309 ,  G02F1/134336 ,  G02F1/1345 ,  G02F1/136286 ,  G02F1/1395 ,  G09G3/36 ,  G09G2300/0486 ,  G09G2300/0491 ,  G09G2310/0245 ,  G09G2310/061 ,  G09G2310/063 ,  G09G2330/026

摘要： Before starting the regular display in a liquid crystal display device of the bend alignment type, it is necessary to transition all the pixel regions in the entire display portion uniformly from splay alignment into bend alignment. However, conventionally, when applying a simple ac voltage, the transition sometimes does not take place, and when it does take place, the transition time is very long, and display defects due to alignment defects tend to occur.
In the method for driving a liquid crystal display device with OCB cells according to the present invention, a step of applying between an electrode 22 and a pixel electrode 23 an ac voltage superimposed with a bias voltage, and a step of applying zero voltage or a low voltage to the substrates are repeated in alternation preceding the begin of the regular display operation and the regular display operation is carried out after all pixels have transitioned into bend alignment.

摘要翻译： 在弯曲取向式的液晶显示装置，在开始常规显示之前，有必要从喷射取向一致转变所有的像素区域中的显示部全向弯曲取向。 但是，以往，当应用简单的交流电压，过渡有时不会发生，和当它发生时，过渡时间很长，并且由于取向缺陷显示缺陷趋于发生。 在用于驱动具有OCB单元的液晶显示装置雅丁到本发明中，间施加至电极22和重叠上偏置电压上的交流电压的像素电极23的步骤，和施加零电压的步骤或方法 低电压施加到该基板中的重复交替preceding-的开始经常显示操作和常规显示器的被操作的所有像素之后，进行已过渡到弯曲取向。

公开(公告)号：EP1107223A2

公开(公告)日：2001-06-13

申请号：EP00310832.1

申请日：2000-12-06

申请人： Sharp Kabushiki Kaisha

发明人： Walton, Harry Garth ,  Towler, Michael John

IPC分类号： G09G3/36

CPC分类号： G02F1/1395 ,  G09G3/3406 ,  G09G3/3648 ,  G09G2300/0491 ,  G09G2310/061 ,  G09G2310/08

摘要： A method of driving a display device makes use of the dynamic variation in the brightness of a surface mode liquid crystal device cell having liquid crystal layer with a non-zero twist angle. It has been found that when the applied voltage across such a cell is decreased, the brightness does not increase smoothly to its new value, but instead rises rapidly, reaches a non-equilibrium maximum value, and then slowly decays to the equilibrium value. According to the present invention, the liquid crystal layer is switched before the equilibrium value of the brightness has been reached, so as to make use of the non-equilibrium increased brightness and so increase the brightness of the display.
The present invention also provides a liquid crystal display device having means for driving the liquid crystal layer so as to make use of the dynamic variation in the brightness of the liquid crystal device.

摘要翻译： 驱动显示装置的方法利用具有非零扭转角的液晶层的表面模式液晶器件单元的亮度的动态变化。 已经发现，当这种电池上的施加电压降低时，亮度不会平滑地增加到其新值，而是快速上升，达到非平衡最大值，然后缓慢衰减到平衡值。 根据本发明，在达到亮度的平衡值之前切换液晶层，以便利用非平衡增加的亮度，从而增加显示器的亮度。 本发明还提供一种液晶显示装置，其具有驱动液晶层的装置，以利用液晶装置的亮度的动态变化。

公开(公告)号：EP1093654A1

公开(公告)日：2001-04-25

申请号：EP99920403.5

申请日：1999-05-07

申请人： Aurora Systems, Inc.

发明人： WORLEY, W., Spencer, III ,  HUDSON, Edwin, Lyle ,  CHOW, Wing, Hong

IPC分类号： G09G3/36

CPC分类号： G09G3/3659 ,  G09G3/2011 ,  G09G3/2022 ,  G09G3/2025 ,  G09G3/2081 ,  G09G3/3614 ,  G09G3/3648 ,  G09G3/3696 ,  G09G2300/0491 ,  G09G2300/0809 ,  G09G2300/0823 ,  G09G2300/0857 ,  G09G2310/063 ,  G09G2320/0204

摘要： A method for displaying multi-bit data words on a display including a plurality of pixel electrodes (612), a plurality of storage elements (702), a first voltage supply terminal (622), a second voltage supply terminal (624), a common electrode (626), and a plurality of multiplexers (704) each selectively coupling an associated one of the pixel electrodes (612) with one of the first voltage supply terminal (622) and the second voltage supply terminal (624) responsive to a value of a data bit stored in an associated one of said storage elements (702), includes the steps of sequentially writing (steps 1004 and 1008) each bit of the multi-bit data words to the storage elements (702), and asserting, while each bit is stored in the storage elements (702), a first predetermined voltage on the first voltage supply terminal (622), a second predetermined voltage on the second voltage supply terminal (624), and a third predetermined voltage on the common electrode (626), for a time dependent on the significance of the stored bit (step 1002).

公开(公告)号：EP0854465A1

公开(公告)日：1998-07-22

申请号：EP97309659.7

申请日：1997-12-01

申请人： INTERNATIONAL BUSINESS MACHINES CORPORATION

发明人： Nakamura, Hajime ,  Noguchi, Michikazu

IPC分类号： G09G3/36

CPC分类号： G09G3/3648 ,  G02F1/1395 ,  G09G2300/0491 ,  G09G2310/0245 ,  G09G2330/026

摘要： In a liquid crystal display using a liquid crystal layer having a bend alignment, a control method for applying a voltage to the liquid crystal layer to cause a transition to the bend alignment in a short time comprises maintaining the potential difference between the gate electrode and the signal electrode larger than 10 V and providing a potential difference larger than 10 V continuously or intermittently between the signal electrode and the counter electrode. Preferably, if a voltage is intermittently provided, the on-time over which a potential difference is provided between the signal electrode and the counter electrode is equal to or longer than the time over which part of the liquid crystal layer effectively begins to transition to the second-stage splay alignment, and the off-time over which no potential difference is applied between the signal electrode and the counter electrode is equal to or longer than the time necessary for the liquid crystal region of the second-stage splay alignment to return to the state before the voltage application.

摘要翻译： 在使用具有弯曲取向的液晶层的液晶显示器中，用于向液晶层施加电压以在短时间内转变为弯曲取向的控制方法包括：保持栅电极与 信号电极大于10V，并且在信号电极和对电极之间连续或间歇地提供大于10V的电位差。 优选地，如果间歇地提供电压，则在信号电极和对电极之间提供电位差的导通时间等于或大于液晶层的一部分有效开始向 第二级喷射取向和在信号电极与对电极之间没有施加电位差的关闭时间等于或大于第二级喷射取向的液晶区域返回到所需时间 电压施加前的状态。