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1.发明授权公开(公告)号：US06215533B1
公开(公告)日：2001-04-10
申请号：US08854559
申请日：1997-05-12
申请人： Mitsuhiro Shigeta , Jonathan Rennie Hughes , Paul Bonnett , Edward Peter Raynes , Akira Tagawa , Michael John Towler , Harry Garth Walton , David Scattergood
发明人： Mitsuhiro Shigeta , Jonathan Rennie Hughes , Paul Bonnett , Edward Peter Raynes , Akira Tagawa , Michael John Towler , Harry Garth Walton , David Scattergood
IPC分类号： G02F1141
CPC分类号： G09G3/3696 , G09G3/3629 , G09G3/3692 , G09G2310/06 , G09G2310/066 , G09G2320/041 , G09G2330/021
摘要： A ferroelectric liquid crystal device includes a layer of ferroelectric liquid crystal material contained between a pair of substrates, a first plurality of electrodes and a second plurality of electrodes defining a plurality of addressable liquid crystal pixels. A driving arrangement is provided for applying a first signal (Strobe) in succession to the first plurality of electrodes and for applying a plurality of second signals (Data) simultaneously to the second plurality of electrodes. The plurality of second signals are arranged to include non-rectangular wave signals which have a lower harmonic content than a rectangular wave. Non-uniform heating of the device as a result of the application of the second signals (Data) is reduced with consequent improvement in device performance.
摘要翻译： 铁电液晶器件包括一对基板之间的铁电液晶材料层，第一多个电极和限定多个可寻址液晶像素的第二多个电极。 提供驱动装置，用于连续地对第一多个电极施加第一信号（频闪），并且同时向多个第二电极施加多个第二信号（Data）。 多个第二信号被布置成包括具有比矩形波低的谐波含量的非矩形波信号。 作为施加第二信号（Data）的结果，装置的不均匀加热减少，从而提高了器件性能。
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公开(公告)号：US5905482A
公开(公告)日：1999-05-18
申请号：US722062
申请日：1996-10-29
CPC分类号： G09G3/364 , G09G3/3629 , G09G2310/061 , G09G2320/0626 , G09G2360/144 , G09G3/2018 , G09G3/2074
摘要： The invention provides a ferroelectric liquid crystal display with uniformly spaced greyscale levels. The invention uses a bistable ferroelectric liquid crystal display formed by a layer of chiral smectic liquid crystal material between two cell walls. The walls carry e.g. line and column electrodes to give an x,y matrix of addressable pixels, and are surface treated to provide bistable operation. Each pixel may be divided into subpixels thereby giving spatial weighting for greyscale. Temporal weighting of greyscale is obtained by switching a pixel to a dark state for time T1 and a light state for time T2. When T1 and T2 are not equal, four different greyscales are obtainable; i.e. dark, dark grey, light grey, and light. The present invention provides a required uniform spacing of greyscale levels by addressing each pixel two or more times in one frame time. Each pixel is blanked then strobed, two or more times in each frame time; the relative times between blanking and strobing, at least four different time periods, are varied to give the desired greyscale levels. The temporal and spatial weighting may be combined to increase the number of obtainable greyscales. Further, the relative intensity between adjacent subpixels may be adjusted to vary the apparent size of the smallest subpixel; this is useful when subpixel size is near to manufacturing limits.
摘要翻译： PCT No.PCT / GB95 / 00814 Sec。 371日期1996年10月29日第 102（e）日期1996年10月29日PCT提交1995年4月10日PCT公布。 WO95 / 27971 PCT公开号 日期：1995年10月19日本发明提供了具有均匀间隔灰度级的铁电液晶显示器。 本发明使用由两个单元壁之间的手性近晶液晶材料层形成的双稳态铁电液晶显示器。 墙壁例如 线和列电极，以得到可寻址像素的x，y矩阵，并进行表面处理以提供双稳态运算。 每个像素可以被划分成子像素，从而给出灰度的空间加权。 通过将像素切换到时间T1的暗状态和时间T2的亮状态来获得灰度的时间加权。 当T1和T2不相等时，可获得四种不同的灰度; 即暗，深灰色，浅灰色和浅色。 本发明通过在一个帧时间内对每个像素进行两次或更多次寻址来提供所需的灰度级别的均匀间隔。 每个像素消隐，然后选通，每帧时间两次或更多次; 消隐和选通之间的相对时间，至少四个不同的时间段被改变以提供期望的灰度级。 可以组合时间和空间加权以增加获得的灰度数。 此外，可以调整相邻子像素之间的相对强度以改变最小子像素的表观尺寸; 当子像素尺寸接近制造限制时，这是有用的。
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公开(公告)号：US5748166A
公开(公告)日：1998-05-05
申请号：US545760
申请日：1996-03-13
CPC分类号： G09G3/3629 , G09G2310/06
摘要： The invention concerns a surface stabilized ferroelectric liquid crystal (SSFLC) display devices. Displays are formed by cells containing a thin layer, e.g. 2 .mu.m thick, of smectic liquid crystal material. The cell walls are surface treated and carry e.g. row and column electrodes forming an x,y matrix of addressable display elements or pixels. These devices can show bistability and switch between their two stable state on application of a dc pulse of appropriate polarity, amplitude and width. In this invention the device is addressed by first preconditioning the liquid crystal material at each pixel by applying one of two different levels of ac bias, thereby changing the switching characteristics of the material, and second by a switching with application of a switching pulse. This results in pixels that have received the first of the ac bias levels switching whilst the other pixels do not switch. The two levels of ac bias may be applied e.g. by a combination of bipolar strobe pulses and two bipolar data waveforms applied in a multiplex addressing manner to the row and column electrodes. The subsequent switching pulse may be shared between row and column electrodes to give a resultant pulse of appropriate polarity, amplitude and width.
摘要翻译： PCT No.PCT / GB94 / 00749 Sec。 371日期：1996年3月13日 102（e）1996年3月13日PCT PCT 1994年4月8日PCT公布。 出版物WO94 / 27275 日期1994年11月24日本发明涉及表面稳定铁电液晶（SSFLC）显示装置。 显示器由包含薄层的单元形成，例如。 2米厚的近晶液晶材料。 细胞壁被表面处理并携带。 行和列电极形成可寻址显示元件或像素的x，y矩阵。 这些器件可以显示双稳态，并在应用适当极性，幅度和宽度的直流脉冲之间切换它们的两个稳定状态。 在本发明中，通过首先通过施加两个不同等级的交流偏压之一来预处理每个像素处的液晶材料，从而改变材料的开关特性，其次通过施加开关脉冲进行切换来解决该装置。 这导致已经接收到第一个交流偏置电平切换的像素，而其他像素不切换。 AC偏置的两个水平可以被应用例如。 通过双极性选通脉冲和以多路寻址方式施加到行和列电极的两个双极数据波形的组合。 后续的开关脉冲可以在行电极和列电极之间共享，以产生合适的极性，幅度和宽度的合成脉冲。
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4.发明授权Luminescent device and a liquid crystal device incorporating a luminescent device 失效发光装置和结合有发光装置的液晶装置公开(公告)号：US06628068B1
公开(公告)日：2003-09-30
申请号：US09857550
申请日：2001-12-18
申请人： Judy Megan Rorison , Harald Reinhart Bock , Michael John Towler , Michael Stuart Weaver , Andrew James Hudson
发明人： Judy Megan Rorison , Harald Reinhart Bock , Michael John Towler , Michael Stuart Weaver , Andrew James Hudson
IPC分类号： H01J162
CPC分类号： H01L51/5293 , H01L27/32 , H01L51/004 , H01L51/5012 , H01L51/5036
摘要： A luminescent device having first and second light-emitting regions, wherein the first light-emitting region emits, in use, a first polarised light and the second light-emitting region emits, in use, a second polarised light different from the first polarised light.
摘要翻译： 一种具有第一和第二发光区域的发光装置，其中第一发光区域在使用中发射第一偏振光，第二发光区域在使用中发射与第一偏振光不同的第二偏振光 。
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公开(公告)号：US06417826B1
公开(公告)日：2002-07-09
申请号：US09245274
申请日：1999-02-05
IPC分类号： G09G336
CPC分类号： G09G3/3629 , G09G3/2018 , G09G3/2074 , G09G2310/06 , G09G2310/061 , G09G2320/0261
摘要： A method of addressing a liquid crystal device having a plurality of scanning electrodes and a plurality of data electrodes defining a plurality of pixels at the intersections between at least one of the plurality of scanning electrodes and at least one of the plurality of data electrodes, the method comprising applying one frame of a scanning signal to one of the plurality of scanning electrodes, applying a data signal to at least one of the plurality of data electrodes, one frame of the scanning signal comprising n strobe portions, where n is an integer greater than 1, for co-operation with the at least one data signal to address one of the plurality of pixels, and at least one blanking portion, the number of blanking portions not exceeding (n−1).
摘要翻译： 一种寻址具有多个扫描电极和多个数据电极的液晶装置的方法，所述多个扫描电极和多个数据电极在所述多个扫描电极中的至少一个与所述多个数据电极中的至少一个之间的交点处限定多个像素， 该方法包括将扫描信号的一帧应用于所述多个扫描电极之一，将数据信号施加到所述多个数据电极中的至少一个数据电极，所述扫描信号的一帧包括n个选通部分，其中n为更大的整数 1以上，与至少一个数据信号进行协调以寻址多个像素中的一个，以及至少一个消隐部分，不超过（n-1）的消隐部分的数量。
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公开(公告)号：US06204904B1
公开(公告)日：2001-03-20
申请号：US08961212
申请日：1997-10-30
IPC分类号： G02F11335
CPC分类号： G02F1/1393 , G02F1/13363 , G02F2001/133565 , G02F2001/133638 , G02F2001/1398 , G02F2202/40 , G02F2203/02 , G02F2413/02 , G02F2413/08 , G02F2413/15
摘要： A reflective liquid crystal device comprises a polariser and a mirror between which are disposed several retarder. At least one of the retarders is a variable liquid crystal element whose optic axis is switchable so as to switch the device between a reflective sate and a non-reflective state. In the non-reflective state, the total retardance of the retarders between the polariser and the mirror is equal to an odd number of quarter wavelengths for a wavelength at or adjacent the middle of the visible spectrum.
摘要翻译： 反射型液晶装置包括偏振器和反射镜，在其间布置有多个延迟器。 延迟器中的至少一个是可变的液晶元件，其光轴可切换，以便在反射状态和非反射状态之间切换装置。 在非反射状态下，偏振器和反射镜之间的延迟器的总延迟等于可见光谱中间或附近的波长的四分之一波长的奇数。
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公开(公告)号：US6091463A
公开(公告)日：2000-07-18
申请号：US14666
申请日：1998-01-28
申请人： Michael Geraint Robinson , Craig Tombling , Nicholas Mayhew , Mitsuhiro Koden , Michael John Towler
发明人： Michael Geraint Robinson , Craig Tombling , Nicholas Mayhew , Mitsuhiro Koden , Michael John Towler
CPC分类号： G02F1/292 , G09G3/3648 , G09G3/3651 , G02F1/141 , G02F2201/124 , G09G2300/0814 , G09G2300/0842 , G09G2310/06 , G09G3/3614 , G09G3/3655
摘要： A diffractive spatial light modulator includes: a layer of electro-optic material; a first electrode arrangement substantially covering a first side of the layer; and a second electrode arrangement substantially covering a second side of the layer. The first electrode arrangement includes a plurality of sets of elongate electrodes, and the elongate electrodes of each of the sets are electrically connected together and interdigitated with the elongate electrodes of at least one of the other acts. The second electrode arrangement includes a plurality of discrete picture element electrodes.
摘要翻译： 衍射空间光调制器包括：一层电光材料; 基本上覆盖该层的第一侧的第一电极装置; 以及基本上覆盖该层的第二侧的第二电极装置。 第一电极布置包括多组细长电极，并且每个组的细长电极电连接在一起，并与其它动作中的至少一个的细长电极交错。 第二电极布置包括多个分立的像素电极。
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公开(公告)号：US6046715A
公开(公告)日：2000-04-04
申请号：US854116
申请日：1997-05-09
申请人： Michael John Towler , Akira Tagawa
发明人： Michael John Towler , Akira Tagawa
CPC分类号： G09G3/3629 , G09G2310/06 , G09G2310/065 , G09G2320/041
摘要： A liquid crystal array device comprises a liquid crystal material contained between two substrates, a first and a second plurality of electrodes defining a plurality of pixels and driving circuitry 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 and a second waveform and the first waveform and the second waveform each comprise first and second signal levels. The first waveform and the second waveform 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 and an alternating succession of first and second waveforms.
摘要翻译： 一种液晶阵列器件包括一个液晶材料，它包含在两个基片之间，一个第一和第二个多个电极限定了多个像素，驱动电路用于连续施加第一个多个电极的第一个信号（选通电压） 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和第二波形中的一个，并且第一波形和第二波形各自包括第一和第二信号电平。 第一波形和第二波形还包括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的信号和交替连续的第一和第二波形之间的阵列上的加热效应的有限差异。
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公开(公告)号：US5990991A
公开(公告)日：1999-11-23
申请号：US880456
申请日：1997-06-24
IPC分类号： G02F1/137 , G02F1/133 , G02F1/1335 , G02F1/13363 , G02F1/1337 , G02F1/1347 , G02F1/139 , G02F1/141
CPC分类号： G02F1/13473 , G02F1/1395 , G02F1/1396 , G02F1/13363
摘要： A twisted liquid crystal device includes a liquid crystal layer and first and second alignment layers disposed in opposite sides of the liquid crystal layer. The first and second alignment layers have respective alignment directions which are mutually inclined. A first linear polarizer is disposed on the opposite side of the first alignment layer to the liquid crystal layer. Electrodes apply a variable voltage across the liquid crystal layer which has a twisted liquid crystal structure and is arranged for operation in a surface switching mode with first and second regions of the liquid crystal layer adjacent the alignment layers being mutually optically de-coupled so as to act, within the liquid crystal layer, when in use, like a pair of separate, active optical retarders having mutually inclined optic axes and optical retardations which can be varied within a range to cause color.
摘要翻译： 扭转液晶装置包括液晶层和设置在液晶层相对侧的第一和第二取向层。 第一和第二取向层具有相互倾斜的各自的取向方向。 第一线性偏振器设置在第一取向层的与液晶层相反的一侧上。 电极在具有扭转液晶结构的液晶层上施加可变电压，并且布置成以表面切换模式操作，其中与取向层相邻的液晶层的第一和第二区域被相互光学去耦合，以便 在使用中，像一对具有相互倾斜的光轴的光学延迟器和可在可引起颜色的范围内变化的光学延迟的一对分离的有源光学延迟器在液晶层内作用。
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公开(公告)号：US5724060A
公开(公告)日：1998-03-03
申请号：US505200
申请日：1995-08-14
CPC分类号： G09G3/3696 , G09G3/3629 , G09G2310/0205 , G09G2310/06 , G09G2310/061
摘要： The invention provides a ferro-electric liquid crystal display (FLCDs) with reduced voltages requirements for driver circuits. This enables standard drivers circuits designed to rms address twisted nematic type of displays, to be used for FLCDs. Displays are formed by cells containing smectic liquid crystal material. The cell walls are surface treated and carry e.g. row and column electrodes forming an x,y matrix of addressable display elements. The smectic liquid crystal material switches between two states upon application of a dc pulse of appropriate amplitude, polarity, and time. Addressing waveforms are strobe waveforms, e.g. two pulses of opposite polarity in successive time slots, applied to each row in turn. Data waveforms are, e.g. dc pulses of alternate polarity with each pulse lasting one time slot ts. Two data waveforms are needed to switch between the two states; one data waveform is the inverse of the other. Typically a strobe waveform pulse may be 50 volts. In the invention a voltage reduction waveform (VRW) is added to both strobe and data waveforms. This has the effect of reducing the maximum amplitude of voltage needed by the driver circuits, whilst leaving the resultant voltage appearing at a display element at the same value as if VRW were not used. With a reduced voltage requirement, driver circuits previously used for relatively low voltage menatic material type of displays can be used to switch smectic materials.
摘要翻译： PCT No.PCT / GB94 / 00150 Sec。 371日期1995年8月14日 102（e）日期1995年8月14日PCT 1994年1月26日PCT PCT。 公开号WO94 / 18665 日期1994年8月18日本发明提供了一种对驱动电路具有降低的电压要求的铁电液晶显示器（FLCD）。 这使得设计用于符合地址扭转向列型显示器的标准驱动器电路用于FLCD。 显示器由含有近晶液晶材料的电池形成。 细胞壁被表面处理并携带。 行和列电极形成可寻址显示元件的x，y矩阵。 当应用具有适当幅度，极性和时间的直流脉冲时，近晶体液晶材料在两种状态之间切换。 寻址波形是选通波形，例如。 在连续的时隙中两个相反极性的脉冲依次应用于每一行。 数据波形例如。 具有交替极性的直流脉冲，每个脉冲持续一个时隙ts。 需要两个数据波形来切换两种状态; 一个数据波形是另一个数据波形。 通常，选通波形脉冲可以是50伏。 在本发明中，电压降低波形（VRW）被添加到选通脉冲和数据波形。 这具有降低驱动器电路所需的电压的最大幅度的作用，同时将出现在显示元件处的合成电压保持在与不使用VRW相同的值。 随着电压要求的降低，以前用于相对低电压的阴极材料类型的显示器的驱动电路可用于切换近晶材料。
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