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    • 52. 发明授权
    • Chiral smectic liquid crystal apparatus and driving method therefor
    • 手性近晶液晶装置及其驱动方法
    • US5933128A
    • 1999-08-03
    • US648996
    • 1996-05-17
    • Masaki KuribayashiOsamu IkedaKazunori KatakuraHironao KimuraHidetoshi Tsuzuki
    • Masaki KuribayashiOsamu IkedaKazunori KatakuraHironao KimuraHidetoshi Tsuzuki
    • G09G3/36
    • G09G3/3629G09G2310/06G09G2310/061G09G2320/02G09G3/3614
    • A liquid crystal apparatus includes (a) a liquid crystal panel including: a pair of substrates having thereon a group of scanning electrodes and a group of data electrodes, respectively, and provided with mutually different alignment characteristics, and a chiral smectic liquid crystal disposed between the substrates so as to form a pixel at each intersection of the scanning electrodes and the data electrodes, and (b) drive means for: sequentially applying a scanning selection signal to the scanning electrodes to select at least one scanning electrode, and applying a data signal having at least three peak values to the data electrodes in synchronism with the scanning selection signal. A DC bias voltage may be applied between the scanning electrodes and the data electrodes, and the polarity of the DC voltage may be switched for each prescribed period. The above system is suitable for obviating or suppressing the "sticking" phenomenon of a chiral smectic liquid crystal.
    • 液晶装置包括:(a)液晶面板,包括:分别具有一组扫描电极和一组数据电极的一对基板,并且具有相互不同的取向特性,并且手性近晶液晶设置在 基板,以便在扫描电极和数据电极的每个交叉点处形成像素,以及(b)驱动装置,用于:顺序地向扫描电极施加扫描选择信号以选择至少一个扫描电极,并施加数据 信号与扫描选择信号同步至数据电极具有至少三个峰值。 可以在扫描电极和数据电极之间施加DC偏置电压,并且可以在每个规定的周期内切换直流电压的极性。 上述系统适用于消除或抑制手性近晶液晶的“粘附”现象。
    • 55. 发明授权
    • Display apparatus
    • 显示装置
    • US5654732A
    • 1997-08-05
    • US367772
    • 1995-01-03
    • Kazunori Katakura
    • Kazunori Katakura
    • G09G3/20G09G3/36
    • G09G3/3637G09G3/3607G09G3/364G09G2310/0205G09G2310/06G09G2310/061G09G2320/041G09G3/2011G09G3/2014G09G3/207G09G3/2074
    • A display apparatus comprises a display section having a multiplicity of pixels P.sub.1, P.sub.2, each pixel having first and second bi-stable sub-pixels A, B and A', B' which have the same threshold characteristics, and a driver for driving the pixels in such a manner that a first writing pulse A.sub.1 is applied to the first sub-pixel A, A' so as to write a complete first stable state in the first sub-pixel A, A', followed by application of a second writing pulse A.sub.2 to write the second stable state, while a first writing pulse B.sub.1 is applied to the second sub-pixel B,B' to write a complete second stable state in the second sub-pixel B,B', followed by application of a second writing pulse B.sub.2 to write the first stable state.
    • 显示装置包括具有多个像素P1,P2的显示部分,每个像素具有具有相同阈值特性的第一和第二双稳态子像素A,B和A',B'和驱动器 像素,使得第一写入脉冲A1被施加到第一子像素A,A',以便在第一子像素A,A'中写入完整的第一稳定状态,然后施加第二写入 脉冲A2写入第二稳定状态,而第一写入脉冲B1施加到第二子像素B,B'在第二子像素B,B'中写入完整的第二稳定状态,然后施加 第二次写入脉冲B2写入第一个稳定状态。
    • 57. 发明授权
    • Color liquid crystal display device having varying cell thickness and
varying pixel areas
    • 具有变化的单元厚度和变化的像素区域的彩色液晶显示装置
    • US5552911A
    • 1996-09-03
    • US136268
    • 1993-10-15
    • Shinjiro OkadaYutaka InabaMakoto KojimaKazunori Katakura
    • Shinjiro OkadaYutaka InabaMakoto KojimaKazunori Katakura
    • G02F1/1333G02F1/1335G02F1/1343
    • G02F1/133514G02F1/134336G02F1/133371G02F2203/30
    • A liquid crystal display device is constituted by a pair of electrode plates each having a plurality of elongated electrodes, and a layer of ferroelectric liquid crystal disposed between the electrode plates so as to form a pixel at each intersection of elongated electrodes disposed respectively on the pair of electrodes plates. At least one electrode plate is provided with an unevenness at each pixel so as to form a cell thickness gradient within each pixel, and at least one electrode plate is provided with at least three types of color filters each corresponding to a pixel. Further, each color filter and/or each pixel is set to have an area and/or a shape varying depending on a local cell thickness so that light quantities or sensible light quantities transmitted through the respective filters and the liquid crystal layer are identical to each other regardless of the type of color filter. A similar pixel pattern deformation is effective for providing a linear T (transmittance)--log V (voltage) characteristic. Color pixels pattern deformation may preferably be effected in a complementary manner with respect to different colors.
    • 液晶显示装置由一对电极板构成,每对电极板具有多个细长电极,并且在电极板之间设置有一层铁电液晶,以便在分别设置在该对电极板上的细长电极的每个交点处形成像素 的电极板。 至少一个电极板在每个像素处具有不平坦度,以便在每个像素内形成单元厚度梯度,并且至少一个电极板设置有至少三种类型的滤色器,每种滤色器对应于像素。 此外,每个滤色器和/或每个像素被设置为具有根据局部单元厚度而变化的面积和/或形状,使得透过各个滤光器和液晶层的光量或感光量与每个滤色器和液晶层相同 其他不管类型的滤色片。 类似的像素图案变形对于提供线性T(透射率)-log V(电压)特性是有效的。 颜色像素图案变形优选地可以相对于不同的颜色以互补的方式实现。
    • 58. 发明授权
    • Driving method for liquid crystal device
    • 液晶装置的驱动方法
    • US5532713A
    • 1996-07-02
    • US229220
    • 1994-04-18
    • Shinjiro OkadaYutaka InabaKazunori Katakura
    • Shinjiro OkadaYutaka InabaKazunori Katakura
    • G09G3/20G09G3/36
    • G09G3/3637G09G2310/061G09G2320/0209G09G3/2014G09G3/207
    • A liquid crystal device of the type comprising a pair of oppositely disposed electrode plates having thereon a group of scanning lines and a group of data lines, respectively, and a liquid crystal disposed between the pair of electrode plates so as to form a pixel at each intersection of the scanning lines and data lines, is driven by a driving method including the steps of applying a scanning selection voltage waveform including a scanning selection signal to a scanning line within one scanning period, and applying a data signal waveform to data lines within the one scanning period. The data signal waveform is composed to include (i) a data signal period for a data signal synchronized with the scanning selection signal and providing a time-integrated voltage of zero applied to an associate pixel within the period and (ii) an AC signal period for an AC signal providing a time-integrated voltage of zero applied to the associated pixel within the AC signal period. As a result, a pixel on a selected scanning line written in an optical state, particularly a halftone state, is not affected by data signals applied for writing in pixels on a subsequently selected scanning line regardless of a relaxation time exhibited by the liquid crystal at the time of switching thereof.
    • 一种液晶装置,包括一对相对设置的电极板,分别具有一组扫描线和一组数据线,以及液晶,其设置在该对电极板之间,以便在每个电极板上形成像素 通过驱动方法驱动扫描线和数据线的交点,该驱动方法包括以下步骤:在一个扫描周期内向扫描线施加包括扫描选择信号的扫描选择电压波形,并将数据信号波形施加到扫描线和数据线内的数据线 一个扫描期。 数据信号波形被构成为包括(i)与扫描选择信号同步的数据信号的数据信号周期,并且在该周期内提供施加到相关像素的零时刻积分电压,以及(ii)AC信号周期 用于AC信号,其提供在AC信号周期内施加到相关联的像素的零时刻积分电压。 结果,写入光学状态,特别是半色调状态的所选择的扫描线上的像素不受随后选择的扫描线上的像素中写入的数据信号的影响,而与液晶的弛豫时间无关 切换的时间。