公开(公告)号：US20060170847A1

公开(公告)日：2006-08-03

申请号：US11393853

申请日：2006-03-31

Applicant: Tsuyoshi Maeda ,  Kimitaka Kamijo ,  Kinya Ozawa ,  Hitoshi Tsuchiya

Inventor： Tsuyoshi Maeda ,  Kimitaka Kamijo ,  Kinya Ozawa ,  Hitoshi Tsuchiya

IPC: G02F1/1335

CPC classification number: G02F1/133553 ,  G02B5/3016 ,  G02F2201/343

Abstract: The invention provides a thin reflective plate having cholesteric liquid crystal that can prevent or reduce a decrease of reflection efficiency. A reflective plate includes a cholesteric liquid crystal layer, and the cholesteric liquid crystal layer includes a plurality of regions in which the helical axes of the cholesteric liquid crystal are aligned in different directions in the plane of a substrate, and therefore, the regions can reflect color light components having different wavelengths. Consequently, the cholesteric liquid crystal layer can reflect light formed of light components of different colors (for example, white light) as a whole. When the reflective plate is applied to a reflective liquid crystal display device or the like, it is possible to appropriately reflect white light for display.

公开(公告)号：US07079207B2

公开(公告)日：2006-07-18

申请号：US10288235

申请日：2002-11-04

Applicant: Keiji Kashima

Inventor： Keiji Kashima

IPC: G02F1/1335

CPC classification number: G02F1/133514 ,  G02F1/133533 ,  G02F2201/343

Abstract: A liquid crystal display improves light utilization efficiency with a cholesteric liquid crystal filter to ensure color density enough to enable both transmission and reflection type displays. The display comprises a liquid crystal display device comprising a liquid crystal layer between transparent substrates, a voltage applying electrode, a driving circuit, an illumination light source, and a pair of circularly polarizing plates. A cholesteric liquid crystal filter semitransparent to red, green and blue wavelength ranges is located on the illumination light-directing side. The liquid crystal layer viewing side has a cholesteric liquid crystal color filter array capable of transmitting red, green and blue wavelength ranges and reflecting light in other wavelength ranges depending on a pixel arrangement, and absorption type color filter array is located in alignment therewith and capable of transmitting only red, green and blue wavelength ranges and absorbing light in other wavelengths.

Abstract translation: 液晶显示器利用胆甾醇型液晶滤光片提高光利用效率，以确保足够的色彩浓度以实现透射和反射型显示。 显示器包括液晶显示装置，其包括透明基板之间的液晶层，施加电压的电极，驱动电路，照明光源和一对圆偏振片。 红色，绿色和蓝色波长范围半透明的胆甾型液晶滤光器位于照明光导侧。 液晶层观看侧具有能够透过红色，绿色和蓝色波长范围并根据像素排列反射其它波长范围内的光的胆甾醇型液晶滤色器阵列，并且吸收型滤色器阵列与其对准并且具有能力 仅传输红色，绿色和蓝色波长范围并吸收其他波长的光。

公开(公告)号：US07068344B2

公开(公告)日：2006-06-27

申请号：US10373126

申请日：2003-02-24

Applicant: Richard J. Pokorny ,  Marc D. Radcliffe ,  Steven D. Solomonson ,  Terence D. Spawn

Inventor： Richard J. Pokorny ,  Marc D. Radcliffe ,  Steven D. Solomonson ,  Terence D. Spawn

IPC: G02F1/1335 ,  C09K19/02

CPC classification number: G02B5/3016 ,  G02F1/133536 ,  G02F2201/343

Abstract: The method of making an optical body includes coating a mixture that includes a plurality of cholesteric liquid crystal compositions, and a solvent on a substrate. Each cholesteric liquid crystal composition is different. A plurality of layers is formed on the substrate. Each layer includes a majority of one of the cholesteric liquid crystal compositions.

Abstract translation: 制造光学体的方法包括将包含多个胆甾醇型液晶组合物的混合物和溶剂涂布在基板上。 每个胆固醇液晶组合物不同。 在基板上形成多个层。 每个层包括胆甾型液晶组合物中的大部分。

公开(公告)号：US06906764B2

公开(公告)日：2005-06-14

申请号：US10277868

申请日：2002-10-23

Applicant: Keiji Kashima ,  Yukihiro Toyota ,  Masanori Umeya ,  Mariko Goto

Inventor： Keiji Kashima ,  Yukihiro Toyota ,  Masanori Umeya ,  Mariko Goto

IPC: G02B5/30 ,  G02F1/1335 ,  G02F1/13

CPC classification number: G02B5/3016 ,  G02F1/133536 ,  G02F2201/343

Abstract: A polarized light extraction optical element is formed by a light-transmitting base material and a polarization separation layer laminated thereonto, this polarization separation layer being a liquid crystal layer made of a cholesteric liquid crystal. The thickness of the liquid crystal layer is smaller than the thickness that would be required to achieve a maximum reflectivity, so that part of one of the right and left circularly polarized light components is reflected with a reflectivity smaller than the maximum reflectivity.

Abstract translation: 偏振光提取光学元件由透光基材和层压在其上的偏振分离层形成，该偏振分离层是由胆甾型液晶制成的液晶层。 液晶层的厚度小于获得最大反射率所需的厚度，使得右和左圆偏振光分量中的一个的一部分以小于最大反射率的反射率反射。

公开(公告)号：US06894821B2

公开(公告)日：2005-05-17

申请号：US10281582

申请日：2002-10-28

Applicant: Keith M. Kotchick

Inventor： Keith M. Kotchick

IPC: G02B5/02 ,  G02F1/1335 ,  G02F1/13357 ,  G02F1/13363 ,  H01L51/50 ,  G02F1/03

CPC classification number: G02F1/13362 ,  G02F1/133536 ,  G02F2201/343 ,  G02F2203/09

Abstract: Display apparatuses are shown capable of displaying information in a reflective mode using only ambient light and in a transmissive mode using a light source. In one embodiment, the display apparatus includes a reflecting polarizer disposed between a light modulating layer and an isotropic light cavity. The light cavity reflects incident light with a first degree of depolarization. The reflecting polarizer reflects light with a second degree of depolarization for at least one polarization that is greater than the first degree of depolarization. In another embodiment of the display apparatus, a microstructured film is included above a light cavity and below a light modulating system where the microstructured film includes sawtooth formations having at least a tilted surface. In another embodiment of a dual-mode display device, the display includes a cholesteric reflecting polarizer disposed between a light modulating layer and a light cavity where the light cavity causes a polarization phase shift upon reflectance.

Abstract translation: 示出了能够仅使用环境光并且在使用光源的透射模式中以反射模式显示信息的显示装置。 在一个实施例中，显示装置包括设置在光调制层和各向同性光腔之间的反射偏振器。 光腔以第一度去极化反射入射光。 反射偏振器对具有大于第一去极化程度的至少一个偏振的第二度去极化反射光。 在显示装置的另一实施例中，微结构化膜包括在光腔之上并位于光调制系统之下，其中微结构化膜包括具有至少倾斜表面的锯齿形结构。 在双模显示装置的另一实施例中，显示器包括设置在光调制层和光腔之间的胆甾型反射偏振器，其中光腔在反射率下引起偏振相移。

公开(公告)号：US20040263732A1

公开(公告)日：2004-12-30

申请号：US10493631

申请日：2004-04-23

Inventor： Funfschilling Jurg

IPC: G02F001/1335

CPC classification number: G02F1/13473 ,  G02F2001/133638 ,  G02F2201/343

Abstract: The liquid crystal switchable color filter switches between three color bands and is preferably used for time-sequential color devices, as for example projection devices, direct view displays and video cameras. The color filter employs circularly polarizing selective reflection bands of at least four cholesteric filters (89, 91, 93, 95) together with three liquid crystal switches (81, 83, 85) and related retarder layers. Between the first and the second as well as between the third and the fourth cholesteric filter an additional half-wave plate (111, 113) is provided, which makes it possible to use cholesteric filters having all the same handedness. Furthermore, for the blocking state of a color band the optic axis of the corresponding liquid crystal switch is parallel or perpendicular to the polarization direction. This concept simplifies production and still exhibits excellent properties for the color switch. Moreover, it advantageously allows overlapping color transmission bands thus improving the light efficiency.

Abstract translation: 液晶可切换彩色滤光片在三个色带之间切换，并且优选用于时序彩色装置，例如投影装置，直视图和摄像机。 滤色器与三个液晶开关（81,83,85）和相关的延迟器层一起使用至少四个胆甾醇滤光器（89,91,93,95）的圆偏振选择反射带。 在第一和第二之间以及在第三和第四胆甾醇型滤光器之间，提供了附加的半波片（111,113），这使得可以使用具有相同的手感度的胆甾型滤光器。 此外，对于色带的阻挡状态，相应液晶开关的光轴平行或垂直于偏振方向。 该概念简化了生产，并且对于颜色开关仍然表现出优异的性能。 此外，其有利地允许重叠的彩色传输频带，从而提高光效率。

公开(公告)号：US20030164906A1

公开(公告)日：2003-09-04

申请号：US10382624

申请日：2003-03-07

Applicant: Dai Nippon Printing Co., Ltd.

Inventor： Fumihiro Arakawa ,  Keiji Kashima

IPC: G02F001/1335

CPC classification number: G02F1/13362 ,  G02B5/3016 ,  G02F1/133502 ,  G02F1/133504 ,  G02F1/133526 ,  G02F1/133536 ,  G02F1/133615 ,  G02F2001/133543 ,  G02F2001/133607 ,  G02F2001/133638 ,  G02F2201/343

Abstract: A polarization light splitting film having a light receiving side and a light transmitting side. The polarization light splitting film includes an optical rotation selection layer at the light receiving side for reflecting one of right and left circularly polarized components of a light beam that is incident on the light receiving side and for transmitting the other one of the right and left circular polarization components of the light beam, and a quarter-wave layer laminated over the optical rotation selection layer at the light transmitting side.

Abstract translation: 一种具有光接收侧和透光侧的偏振光分解膜。 偏振光分离膜包括在光接收侧的光旋转选择层，用于反射入射在光接收侧的光束的左右圆偏振分量中的一个，并且用于透射左右圆形的另一个 光束的偏振分量，以及层叠在光发射侧的光旋转选择层上的四分之一波长层。

公开(公告)号：US20030160923A1

公开(公告)日：2003-08-28

申请号：US10078801

申请日：2002-02-19

Inventor： Yao-Dong Ma

IPC: G02F001/1335

CPC classification number: G02F1/133555 ,  G02F1/133514 ,  G02F1/13718 ,  G02F2201/343

Abstract: The present invention relates to a liquid crystal display, more specifically, relates to a full color cholesteric display employing circularly polarized micro-color filter which is composed of polymeric cholesteric thin film. The display has a long time memory and excellent characteristics of brightness and contrast. A built-in cholesteric color filter structure provides a full color gamut of circular polarization. A cholesteric liquid crystal cell structure, as a circular polarization modulator, provides optical ON and OFF states respectively with its one texture as a circular polarizer and the other texture as a depolarizer. Both of those two textures are electric field controllable.

Abstract translation: 液晶显示器技术领域本发明涉及一种液晶显示器，更具体地说，涉及采用由聚合胆甾型薄膜构成的圆偏振微彩滤色片的全色胆甾型显示器。 该显示器具有长时间的记忆和优异的亮度和对比度特性。 内置的胆甾型滤色镜结构提供了全色域的圆偏振。 作为圆偏振光调制器的胆甾醇型液晶单元结构分别以其一个结构作为圆偏振器和另一个纹理分别提供光ON和OFF状态作为去偏振器。 这两种纹理都是电场可控的。

公开(公告)号：US06567060B1

公开(公告)日：2003-05-20

申请号：US09529477

申请日：2000-04-13

Applicant: Kanetaka Sekiguchi

Inventor： Kanetaka Sekiguchi

IPC: G09G336

CPC classification number: G02F1/133536 ,  G02F1/133509 ,  G02F1/133553 ,  G02F2001/133543 ,  G02F2001/133545 ,  G02F2001/133626 ,  G02F2201/343

Abstract: A printed layer having opening portions is provided at a position opposite to an observer of a liquid crystal display device, a display is performed by use of absorption or chromaticity of the printed layer when an external light source is utilized, and a display is performed by transmitting light through the opening portions of the printed layer when an auxiliary light source is turned on, and further different voltages between when the external light source is utilized and when the auxiliary light source is used are applied to a liquid crystal layer by a gradation reversal circuit. Moreover, reversal of brightness and darkness of a display by the use of the external light source and the auxiliary light source is eliminated by a polarizing film or a cholesteric liquid crystal polymer film disposed on the rear face of the liquid crystal display device, thereby enabling a liquid crystal display device with excellent visibility.

Abstract translation: 具有开口部分的印刷层设置在与液晶显示装置的观察者相对的位置处，当使用外部光源时，通过使用印刷层的吸收或色度进行显示，并且显示由 当辅助光源接通时，通过印刷层的开口部分透射光，并且当使用外部光源时和使用辅助光源之间的另外的不同电压通过灰度反转被施加到液晶层 电路。 此外，通过使用外部光源和辅助光源使显示器的亮度和黑暗的反转由设置在液晶显示装置的背面上的偏振膜或胆甾型液晶聚合物膜消除，从而使能 具有良好可见性的液晶显示装置。

公开(公告)号：US20030090804A1

公开(公告)日：2003-05-15

申请号：US10281582

申请日：2002-10-28

Applicant: 3M Innovative Properties Company

Inventor： Keith M. Kotchick

IPC: G02F001/03 ,  G02F001/07 ,  G02B027/10

CPC classification number: G02F1/13362 ,  G02F1/133536 ,  G02F2201/343 ,  G02F2203/09

Abstract: Display apparatuses are shown capable of displaying information in a reflective mode using only ambient light and in a transmissive mode using a light source. In one embodiment, the display apparatus includes a reflecting polarizer disposed between a light modulating layer and an isotropic light cavity. The light cavity reflects incident light with a first degree of depolarization. The reflecting polarizer reflects light with a second degree of depolarization for at least one polarization that is greater than the first degree of depolarization. In another embodiment of the display apparatus, a microstructured film is included above a light cavity and below a light modulating system where the microstructured film includes sawtooth formations having at least a tilted surface. In another embodiment of a dual-mode display device, the display includes a cholesteric reflecting polarizer disposed between a light modulating layer and a light cavity where the light cavity causes a polarization phase shift upon reflectance.

Abstract translation: 示出了能够仅使用环境光并且在使用光源的透射模式中以反射模式显示信息的显示装置。 在一个实施例中，显示装置包括设置在光调制层和各向同性光腔之间的反射偏振器。 光腔以第一度去极化反射入射光。 反射偏振器对具有大于第一去极化程度的至少一个偏振的第二度去极化反射光。 在显示装置的另一实施例中，微结构化膜包括在光腔之上并位于光调制系统之下，其中微结构化膜包括具有至少倾斜表面的锯齿形结构。 在双模显示装置的另一实施例中，显示器包括设置在光调制层和光腔之间的胆甾型反射偏振器，其中光腔在反射率下引起偏振相移。