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    Liquid crystal display device
    1.
    发明授权
    Liquid crystal display device 有权
    液晶显示装置

    公开(公告)号：US06714276B2

    公开(公告)日：2004-03-30

    申请号：US09778027

    申请日：2001-02-06

    申请人： Michael John Towler ,  Elizabeth Jane Acosta ,  Harry Garth Walton ,  Craig Tombling ,  Martin David Tillin ,  Brian Henley ,  Emma Jayne Walton ,  Tadashi Kawamura ,  Akiyoshi Fujii ,  Yuichiro Yamada

    发明人： Michael John Towler ,  Elizabeth Jane Acosta ,  Harry Garth Walton ,  Craig Tombling ,  Martin David Tillin ,  Brian Henley ,  Emma Jayne Walton ,  Tadashi Kawamura ,  Akiyoshi Fujii ,  Yuichiro Yamada

    IPC分类号： C09K1902

    CPC分类号： G02F1/1395 ,  G02F1/133371

    摘要： A liquid crystal display device comprises: a layer of a chiral liquid crystal material disposed between first and second substrates; and means for applying a voltage across the liquid crystal layer. A first region of the liquid crystal layer is an active region for display and a second region of the liquid crystal layer is a nucleation region for generating a desired liquid crystal state in the first region when a voltage is applied across the liquid crystal layer. The ratio of the thickness d of the liquid crystal layer to the pitch p of the liquid crystal material has a first value (d/p)A in the first region of the liquid crystal layer and has a second value (d/p)N different from the first value in the second region of the liquid crystal layer. The value (d/p)N of the ratio of the thickness d of the liquid crystal layer to the pitch p of the liquid crystal material in the second region of the liquid crystal layer is selected such that, when no voltage is applied across the liquid crystal layer, the liquid crystal state stable in the second region of the liquid crystal layer is topologically equivalent to the desired liquid crystal state.

    摘要翻译： 液晶显示装置包括：设置在第一和第二基板之间的手性液晶材料层; 以及用于在液晶层上施加电压的装置。 液晶层的第一区域是用于显示的有源区域，并且液晶层的第二区域是当在液晶层上施加电压时在第一区域中产生期望的液晶态的成核区域。 液晶层的厚度d与液晶材料的间距p的比率在液晶层的第一区域中具有第一值（d / p）A，并且具有第二值（d / p）N 与液晶层的第二区域中的第一值不同。 选择液晶层的第二区域中的液晶层的厚度d与液晶材料的间距p的比值（d / p）N，使得当不施加电压时 液晶层的液晶状态在液晶层的第二区域稳定的液晶状态在拓扑上等同于所需的液晶状态。

    Liquid crystal device
    2.
    发明授权
    Liquid crystal device 有权
    液晶装置

    公开(公告)号：US06600537B2

    公开(公告)日：2003-07-29

    申请号：US10044828

    申请日：2002-01-11

    申请人： Michael John Towler ,  Elizabeth Jane Acosta ,  Harry Garth Walton

    发明人： Michael John Towler ,  Elizabeth Jane Acosta ,  Harry Garth Walton

    IPC分类号： G02F11337

    CPC分类号： G02F1/1395

    摘要： A pi-cell liquid crystal device comprises a nematic liquid crystal layer (17) disposed between alignment layers (14,15) which provide a pretilt such that, at a zero applied field, the energy of the H-state is less than the energy of the V-state, which is less than the energy of the T-state. A drive arrangement (18) switches the pi-cell by applying a first electric field, at which the energy of the V-state is less than the energy of each of the H-state and the T-state, or a second smaller electric field, at which the energy of the H-state is less than the energy of each of the V-state and the T-state. The T-state may thus be avoided while maintaining high switching speeds.

    摘要翻译： Pi单元液晶装置包括设置在取向层（14,15）之间的向列型液晶层（17），其提供预倾斜，使得在零施加场处，H态的能量小于能量 的V状态，其小于T态的能量。 驱动装置（18）通过施加V状态的能量小于H状态和T状态中的每一个的能量的第一电场或第二较小的电 H状态的能量小于V状态和T态的能量的场。 因此可以在保持高切换速度的同时避免T状态。

    Imaging systems
    3.
    发明授权
    Imaging systems 有权
    成像系统

    公开(公告)号：US06222672B1

    公开(公告)日：2001-04-24

    申请号：US09199295

    申请日：1998-11-24

    申请人： Michael John Towler ,  Harry Garth Walton ,  Elizabeth Jane Acosta

    发明人： Michael John Towler ,  Harry Garth Walton ,  Elizabeth Jane Acosta

    IPC分类号： G02B2726

    CPC分类号： G02B27/26 ,  H04N13/337 ,  H04N13/359 ,  H04N13/363

    摘要： An imaging system according to the invention includes: a matrix of light modulating elements including first and second elements for respectively transmitting first and second image components; a polarizing element having a first polarization axis for linearly polarizing light from the first and second elements; a first optical retardation element incorporating at least one first retarder having first and second regions respectively having a first optic axis at a first orientation and a second option axis at a second orientation to the first polarization axis; and a detecting element having first and second detecting parts, each detecting part including respective second optical retardation element incorporating at least one second retarder and an analyzing element having a second polarization axis intended to be disposed at a defined orientation relative to the first polarization axis, at least one second retarder of the first detecting part having an optic axis which is intended to be disposed substantially perpendicularly to the first optic axis and transversely to the second optic axis of the at least one first retarder, and at least one second retarder of the second detecting part having an optic axis which is intended to be disposed substantially perpendicularly to the second optic axis and transversely to the first optic axis of the at least one first retarder. Substantially only light relating to the first image component is transmitted by the first detecting part and substantially only light relating to the second image component is transmitted by the second detecting part.

    摘要翻译： 根据本发明的成像系统包括：光调制元件矩阵，包括用于分别发射第一和第二图像分量的第一和第二元件; 具有用于使来自第一和第二元件的光线性偏振的第一偏振轴的偏振元件; 第一光学延迟元件包括至少一个第一延迟器，其具有第一和第二区域，第一和第二区域分别具有第一取向的第一光轴和与第一偏振轴成第二取向的第二选择轴; 以及具有第一和第二检测部分的检测元件，每个检测部分包括相应的第二光学延迟元件，所述第二光学延迟元件包括至少一个第二延迟器和具有第二偏振轴的分析元件，所述第二偏振轴将相对于所述第一偏振轴以规定的方向设置， 所述第一检测部分的至少一个第二延迟器具有旨在基本上垂直于所述第一光轴并且横向于所述至少一个第一延迟器的第二光轴布置的光轴，以及至少一个第二延迟器 第二检测部分具有旨在基本上垂直于第二光轴并横向于至少一个第一延迟器的第一光轴布置的光轴。 基本上只有与第一图像分量相关的光被第一检测部分发送，并且基本上只有与第二图像分量有关的光被第二检测部分发送。

    Broadband optical retardation device
    4.
    发明授权
    Broadband optical retardation device 失效
    宽带光学延迟器

    公开(公告)号：US06735017B1

    公开(公告)日：2004-05-11

    申请号：US09555187

    申请日：2000-05-25

    申请人： Elizabeth Jane Acosta ,  Emma Jayne Beynon ,  Adrian Marc Simon Jacobs ,  Michael Geraint Robinson ,  Kirstin Ann Saynor ,  Martin David Tillin ,  Michael John Towler ,  Harry Garth Walton

    发明人： Elizabeth Jane Acosta ,  Emma Jayne Beynon ,  Adrian Marc Simon Jacobs ,  Michael Geraint Robinson ,  Kirstin Ann Saynor ,  Martin David Tillin ,  Michael John Towler ,  Harry Garth Walton

    IPC分类号： G02B2728

    CPC分类号： G02B5/3083 ,  G02F1/13363 ,  G02F1/133753 ,  G02F1/133788 ,  G02F2001/133638 ,  G02F2413/02 ,  G02F2413/08 ,  G02F2413/09 ,  G02F2413/15 ,  H04N13/337

    摘要： A broadband optical retardation device, such as may be used for polarisation encoding of display information or in diffractive optical systems, includes a patterned uniform half wave plate retarder in combination with a non-patterned uniform quarter wave plate retarder having an optic axis oriented at 90° to the xz plane. The patterned retarder consists of alternating first and second regions having first and second optic axes at different orientations to a reference axis, for example at +22.5° and −22.5° to the xz plane. Considering light of wavelength &lgr;° incident on the retarder and linearly polarised in the xy plane, such light is differently polarised by the regions, and the light output by the device includes regions in which the light is right circularly polarised and regions in which the light is left circularly polarised. In the case of incident light of wavelengths greater or less than &lgr;°, the output light becomes progressively more linearly polarised as the wavelengths departs to a greater extent from the ideal value, but not to the same extent as would be the case if the device consisted simply of a patterned single layer acting as a quarter plate retarder.

    摘要翻译： 诸如可用于显示信息的偏振编码或衍射光学系统中的宽带光学延迟装置包括图案化的均匀半波板延迟器，其与未图案化的均匀四分之一波片延迟器组合，其光轴定向为90° °到xz平面。 图案化延迟器由交替的第一和第二区域组成，第一和第二区域具有与参考轴不同取向的第一和第二光轴，例如与xz平面成+ 22.5°和-22.5°。 考虑入射到延迟器上并在xy平面上线性偏振的波长λ°的光，这种光被区域不同地偏振，并且由器件输出的光包括其中光是正向圆偏振的区域，其中光 被左旋极化。 在波长大于或小于λ°的入射光的情况下，随着波长从理想值更大程度地偏离，输出光逐渐变得更线性偏振，但不如与设备 简单地由作为四分之一板延迟器的图案化单层组成。

    Reflective liquid crystal devices
    6.
    发明授权
    Reflective liquid crystal devices 失效
    反光液晶装置

    公开(公告)号：US06765640B1

    公开(公告)日：2004-07-20

    申请号：US10031654

    申请日：2001-11-13

    申请人： Elizabeth Jane Acosta ,  Martin David Tillin ,  Michael John Towler

    发明人： Elizabeth Jane Acosta ,  Martin David Tillin ,  Michael John Towler

    IPC分类号： G02F11335

    CPC分类号： G02F1/1391 ,  G02F1/13363 ,  G02F2001/133638 ,  G02F2203/02 ,  G02F2413/02 ,  G02F2413/08

    摘要： A reflective liquid crystal device comprises in sequence a linear polarizer, a retarder arrangement comprising two retarders, and a reflector. A first of the retarders provides a retardation of m&lgr;/2 and a second of the retarders provides a retardation of n&lgr;/4, where m is an integer and n is an odd integer, and wherein at least one of the first and second retarders comprises a Bistable Twisted Nematic (BTN) liquid crystal. This BTN retarder is switchable between a first state in which the retarder provides a retardation of m&lgr;/2 or n&lgr;/4 and a second state in which the retardation is zero.

    摘要翻译： 反射型液晶装置依次包括线性偏振器，包括两个延迟器的延迟器装置和反射器。 延迟器中的第一个提供了λ/ 2的延迟，并且第二个延迟器提供了nλ/ 4的延迟，其中m是整数，n是奇数整数，并且其中第一和第二延迟器中的至少一个包括 双稳态扭曲向列（BTN）液晶。 该BTN延迟器可在其中延迟器提供λ/ 2或λ/ 4的延迟的第一状态与延迟为零的第二状态之间切换。

    Nematic liquid crystal devices comprising surface protrusions formed of anisotropic material for nucleation of an active region
    7.
    发明授权
    Nematic liquid crystal devices comprising surface protrusions formed of anisotropic material for nucleation of an active region 有权
    向列型液晶装置，包括由各向异性材料形成的用于成核活性区域的表面突起

    公开(公告)号：US07259818B2

    公开(公告)日：2007-08-21

    申请号：US10087660

    申请日：2002-03-01

    申请人： Michael John Towler ,  Elizabeth Jane Acosta

    发明人： Michael John Towler ,  Elizabeth Jane Acosta

    IPC分类号： G02F1/1337

    CPC分类号： G02F1/1391 ,  G02F1/1337 ,  G02F1/133707 ,  G02F1/133753 ,  G02F1/1395 ,  G02F2001/133726 ,  G02F2001/133776

    摘要： A liquid crystal device comprises a nematic liquid crystal, voltage means for applying a voltage across said liquid crystal, and two substrates (42, 30) each provided with an alignment layer (32, 33), wherein: said liquid crystal is sandwiched between said two substrates (42, 30); said nematic liquid crystal can be placed in at least one operating state and at least one non-operating state, and at least one of said alignment layers (32, 33) is provided with a plurality of surface protrusions (40) formed from an anisotropic material.

    摘要翻译： 液晶装置包括向列液晶，用于施加电压跨越所述液晶的电压装置，以及两个分别设置有取向层（32,33）的基板（42,30），其中：所述液晶夹在所述液晶 两个基板（42,30）; 所述向列液晶可以放置在至少一个操作状态和至少一个非操作状态中，并且至少一个所述对准层（32,33）设置有多个由各向异性形成的表面突起（40） 材料。

    Twisted nematic liquid crystal device
    9.
    发明授权
    Twisted nematic liquid crystal device 失效
    扭曲向列型液晶装置

    公开(公告)号：US5880798A

    公开(公告)日：1999-03-09

    申请号：US880455

    申请日：1997-06-24

    申请人： Harry Garth Walton ,  Martin David Tillin ,  Michael John Towler

    发明人： Harry Garth Walton ,  Martin David Tillin ,  Michael John Towler

    IPC分类号： G02F1/137 ,  G02F1/1335 ,  G02F1/1337 ,  G02F1/139 ,  H04N5/74

    CPC分类号： G02F1/1396 ,  G02F2001/13787

    摘要： A twisted nematic liquid crystal device has a liquid crystal layer between a pair of alignment layers. Glass plates with electrodes are disposed on opposite sides of the layers. The alignment layers have their alignment directions disposed mutually perpendicular and at .+-.45.degree. with respect to adjacent linear polarizers. The pretilt angle of liquid crystal molecules in a surface region of the layer adjacent the alignment layer is different to that of liquid crystal molecules in a surface region of the layer adjacent the alignment layer.

    摘要翻译： 扭转向列型液晶装置在一对取向层之间具有液晶层。 具有电极的玻璃板设置在层的相对侧上。 取向层的取向方向相互垂直设置，相对于相邻的线偏振器为+/- 45°。 与取向层相邻的层的表面区域中的液晶分子的预倾斜角度与与取向膜相邻的层的表面区域中的液晶分子的预倾角不同。