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24 条记录 (耗时 0.022 秒)

    Method of displaying gray scales on a ferroelectric liquid crystal cell with variable thickness
    3.
    发明公开
    Method of displaying gray scales on a ferroelectric liquid crystal cell with variable thickness 失效
    灰度值的表示的在具有可变厚度的铁电液晶单元的方法

    公开(公告)号：EP0706169A1

    公开(公告)日：1996-04-10

    申请号：EP95306983.8

    申请日：1995-10-03

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Raynes, Edward Peter ,  Bonnett, Paul ,  Tagawa, Akira

    IPC分类号： G09G3/36

    CPC分类号： G09G3/3637 ,  G09G3/2011 ,  G09G3/207 ,  G09G2320/0209

    摘要： A ferroelectric liquid crystal cell is controlled by applying a strobe pulse (Vs) and a data pulse (Vd1, Vd2, Vd3) to the cell, the magnitude of the data pulse being modulated in order to control the resultant pulse applied to the cell. The resultant pulse comprises a pre-pulse on one polarity and a main pulse of the opposite polarity. When applied to a liquid crystal cell of stepped thickness, the application of data pulses of different magnitudes switches regions of different thicknesses of the cell so as to provide grey level capability.

    摘要翻译： 一种铁电液晶盒，通过施加选通脉冲（VS）和一个数据脉冲（VD1，VD2，VD3）到单元控制，所述数据脉冲的幅值被调制，以便控制施加到单元所得到的脉冲。 所得脉冲包括在一种极性和相反极性的一个主脉冲的预脉冲。 当施加到阶梯形厚度的液晶单元，不同大小的数据脉冲的施加切换单元的不同厚度的区域，从而提供灰度级能力。

    Ferroelectric liquid crystal device and method of addressing a ferroelectric liquid crystal device
    5.
    发明公开
    Ferroelectric liquid crystal device and method of addressing a ferroelectric liquid crystal device 失效
    一种铁电液晶显示器和寻址的液晶显示器的feroelektrischen方法

    公开(公告)号：EP0886258A1

    公开(公告)日：1998-12-23

    申请号：EP98304187.2

    申请日：1998-05-27

    申请人： Sharp Kabushiki Kaisha

    发明人： Tagawa, Akira ,  Bonnett, Paul ,  Towler, Michael John

    IPC分类号： G09G3/36

    CPC分类号： G09G3/3629 ,  G09G2310/0205 ,  G09G2310/06

    摘要： A ferroelectric liquid crystal display comprises data electrodes 1 and strobe electrodes 5 which are connected to data and signal generators 2, 6. The strobe signal generator (6) supplies strobe signals sequentially to groups of more than one strobe electrode (5). For instance, the strobe electrodes 5 may be strobed in pairs with the strobe signals being supplied simultaneously to the electrodes of each pair. The data signal generator 2 supplies any of a plurality of different data signals to each of the data electrodes (1) in synchronism with the strobe signals. The data signals are such that all combinations of optical states for the pixels which are connected to the same data electrode 1 and which are strobed simultaneously can be achieved.

    摘要翻译： 一种铁电液晶显示器包括数据电极1和选通电极5被连接到数据和信号发生器2，6选通信号生成器（6）提供选通信号顺序地一个以上的选通电极的组（5）。 例如，选通电极5可以以对被选通与选通信号被同时提供给各对电极上。 数据信号发生器2提供任何不同数据信号的多元性到每个与所述选通脉冲信号同步地对数据电极（1）构成。 被检查的数据信号做光学状态的所有组合对于被连接到相同的数据电极1和被同时选通可以实现像素。

    Method and device for addressing ferroelectric liquid crystal display
    7.
    发明公开
    Method and device for addressing ferroelectric liquid crystal display 失效
    用于控制铁电液晶显示器的方法和装置

    公开(公告)号：EP0710945A2

    公开(公告)日：1996-05-08

    申请号：EP95307751.8

    申请日：1995-10-31

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Bonnett, Paul ,  Tagawa, Akira ,  Towler, Michael John

    IPC分类号： G09G3/36

    CPC分类号： G09G3/3629 ,  G09G3/2011 ,  G09G2310/06

    摘要： A ferroelectric liquid crystal display comprises data electrodes 1 connected to a data signal generator 2 and strobe electrodes 5 connected to a strobe signal generator 6. The strobe signal generator 6 supplies strobe signals Vs1 to Vs4 in sequence to the strobe electrodes and the data signal generator 2 supplies data signals Vd1 to Vd4 simultaneously and in synchronism with the strobe signals so as to refresh sequentially the rows of pixels formed at the intersections of the data electrodes 1 and the strobe electrodes 5. Each data signal is selected from a plurality having the same polarity behaviour with respect to time, the same RMS voltage, and no net DC component.

    摘要翻译： 的铁电液晶显示器包括连接到连接到选通信号发生器6的选通脉冲信号发生器6个供给选通脉冲信号VS1到Vs4的在序列上与选通电极和数据信号产生器的数据信号发生器2和选通电极5的数据电极1 2个提供数据信号Vd1〜VD4同时，并与选通脉冲信号，以便顺序地刷新在数据电极1和选通电极的交叉形成的像素的行同步5.每个数据信号是从具有相同的所选择的多个 极性行为相对于时间，相同的RMS电压，并且没有净直流分量。

    Method of and apparatus for addressing a ferroelectric liquid crystal device and a ferroelectric liquid crystal device
    9.
    发明公开
    Method of and apparatus for addressing a ferroelectric liquid crystal device and a ferroelectric liquid crystal device 失效
    用于寻址的铁电液晶显示器，铁电液晶显示器的方法和装置

    公开(公告)号：EP0838802A3

    公开(公告)日：1998-07-29

    申请号：EP97307638.3

    申请日：1997-09-29

    申请人： SHARP KABUSHIKI KAISHA

    发明人： Towler, Michael John ,  Tagawa, Akira ,  Bonnet, Paul

    IPC分类号： G09G3/36

    CPC分类号： G09G3/3629 ,  G09G3/2051 ,  G09G3/207 ,  G09G3/2074 ,  G09G2310/06 ,  G09G2310/061

    摘要： A ferroelectric liquid crystal device, such as a display panel, has a plurality of pixels arranged as rows and columns in a passive matrix arrangement. Each pixel has a plurality of switching thresholds, for instance by having different regions (7, 8) of different thicknesses, so as to provide a plurality of grey levels. A voltage waveform is applied to each pixel for switching it to a desired grey level. A blanking pulse of a first polarity is applied to reset the pixel to a reset grey level. This is followed by a compensating pulse (20) of polarity opposite the first polarity, after which a waveform for selecting the desired grey level is provided. The effect of the compensating pulse (20) is to reduce the effect of τmin shift so as to provide a relatively wide driving window (13) to allow more reliable selection of an intermediate grey level.

    Driving circuit and method for liquid crystal array device
    10.
    发明公开
    Driving circuit and method for liquid crystal array device 失效
    液晶阵列装置的驱动电路及方法

    公开(公告)号：EP0809233A3

    公开(公告)日：1997-12-03

    申请号：EP97303371.5

    申请日：1997-05-16

    申请人： SHARP KABUSHIKI KAISHA ,  Secretary of State for Defence in Her Britannic Majesty's Gov. of the United Kingdom of Great Britain and Northern Ireland

    发明人： Towler, Michael John ,  Tagawa, Akira

    IPC分类号： G09G3/36

    CPC分类号： G09G3/3629 ,  G09G2310/06 ,  G09G2310/065 ,  G09G2320/041

    摘要： A liquid crystal array device (10) comprises a liquid crystal material contained between two substrates (12, 20), a first and a second plurality of electrodes (16, 22) defining a plurality of pixels and driving circuitry (18, 26, 28) for applying a first signal (Strobe Voltage) in succession to the first plurality of electrodes and for applying a plurality of second signals (Data Voltage) to each of the second plurality of electrodes. Each second signal comprises one of at least a first waveform (a) and a second waveform (b) and the first waveform and the second waveform each comprise first and second signal levels. The first waveform (a) and the second waveform (b) further comprise at least one portion at a third signal level different from the first and second signal levels. This provides a limited difference in heating effect upon the array between a signal comprising a plurality of first waveforms (a, a, a, a etc.) and an alternating succession of first and second waveforms (a, b, a, b, a, b etc.).

    摘要翻译： 液晶阵列装置（10）包括包含在两个基板（12,20）之间的液晶材料，限定多个像素的第一和第二多个电极（16,22）以及驱动电路（18,26,28） ）用于将第一信号（选通电压）连续地施加到第一多个电极并将多个第二信号（数据电压）施加到第二多个电极中的每一个。 每个第二信号包括至少第一波形（a）和第二波形（b）中的一个，并且第一波形和第二波形各自包括第一和第二信号电平。 第一波形（a）和第二波形（b）还包括处于与第一和第二信号电平不同的第三信号电平的至少一部分。 这提供了在包括多个第一波形（a，a，a，a等）的信号与第一波形和第二波形（a，b，a，b，a）的交替连续之间的阵列上的加热效果的有限差异 ，b等）。