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| Number | Title | Issue Date |
| 7978301 | Optically isotropic liquid crystal display device with interdigitally formed pixel and common electrodes A liquid crystal display device is provided with an electrode structure for effective utilization of optically isotropic liquid crystals. Such a liquid crystal display device comprises a first substrate; a second substrate; polarizing plates provided on the first su... | 07/12/2011 |
| 7652744 | Optical element, method for manufacturing optical element, and semi-transmissive semi-reflective liquid crystal display device The optical element in accordance with the present invention comprises a substrate having a light transmission ability and a fixed liquid crystal layer formed on the substrate. The fixed liquid crystal layer is composed of liquid crystal phase sections in which a li... | 01/26/2010 |
| 7342632 | Display element and display device A display element of the present invention includes: a pair of substrates at least one of which is transparent; a medium layer, made of a medium sandwiched between the substrates 1 and 2, whose magnitude of an optical anisotropy is changed by applying ... | 03/11/2008 |
| 7327432 | Optically compensated electro-optical light modulation element with optically isotropic phase The invention relates to a compensated electro-optical light modulation element comprising a mesogenic medium that is operated in an optically isotropic phase of the mesogenic medium and comprising at least one compensation element, and to displays containing such a... | 02/05/2008 |
| 7289176 | Single panel, active matrix, full color, cholesteric LCD cell configuration A liquid crystal display system and cell configuration is disclosed. The element has a first substrate, having a first substrate electrode and a second substrate having a second substrate electrode approximately parallel to the first substrate. In between the two su... | 10/30/2007 |
| 7012600 | Methods for driving bistable electro-optic displays, and apparatus for use therein A bistable electro-optic display has a plurality of pixels, each of which is capable of displaying at least three gray levels. The display is driven by a method comprising: storing a look-up table containing data representing the impulses necessary to convert an ini... | 03/14/2006 |
| 6939587 | Fabrication of aligned crystal cell/film by simultaneous alignment and phase separation A method for simultaneously fabricating a phase separated organic film and microstructures with liquid crystal having desired alignment is disclosed. The method includes the step of preparing a mixture of liquid crystal material, prepolymer, and polarization-sensiti... | 09/06/2005 |
| 6924009 | Electro-optical devices from banana-shaped liquid crystals A liquid crystal device comprising tilted smectic phases of banana-shaped liquid crystal molecules is disclosed. A method for fabricating a light modulating device is also disclosed. The method comprises the steps of providing a pair of substrates with a cell gap th... | 08/02/2005 |
| 6900469 | Liquid crystal display element Disclosed is a liquid crystal display apparatus comprising a pair of substrates and a liquid crystal layer provided between the substrates, the liquid crystal layer containing a liquid crystal composition that exhibits a cholesteric phase. The liquid crystal composi... | 05/31/2005 |
| 6856086 | Hybrid display device A display includes a front panel and a back panel with a light control material in between. One of the panels includes a rigid substrate, for example made of glass or rigid plastic. The other of the panels includes a flexible substrate, for example made of a flexibl... | 02/15/2005 |
| 6605323 | Monostable ferroelectric active matrix display In a monostable ferroelectric active matrix display comprising a liquid-crystal layer in the form of a monodomain having an unambiguously defined direction of the layer normals z of the smC* phase, the layer normals z and the preferential direction n of t... | 08/12/2003 |
| 6532046 | Liquid crystal display material, liquid crystal display method and liquid crystal display device The object of the present invention is to provide a novel liquid crystal display material having an excellent contrast ratio, a display method and a display device using the material. The present invention uses a liquid crystal display material comprising... | 03/11/2003 |
| 6420000 | Liquid crystal device and driving method for the device A liquid crystal device is constituted by a chiral smectic liquid crystal to form a plurality of pixels. The chiral smectic liquid crystal has a temperature-dependent tilt angle characteristic satisfying the following relationship: H10 -H1... | 07/16/2002 |
| 6052103 | Liquid-crystal display device and driving method thereof A liquid crystal device comprises plural pixel electrodes arranged in a matrix form, a common electrodes facing the pixel electrodes, a liquid crystal layer sandwiched therebetween, and plural switches to drive the respective pixel electrodes. A reflectiv... | 04/18/2000 |
| 5933203 | Apparatus for and method of driving a cholesteric liquid crystal flat panel display Driver apparatus and methods of driving at least a portion of a cholesteric liquid crystal ("CLC") panel to a state having a given reflectivity. One of the methods includes the steps of: (1) initially driving the portion to a nematic phase, (2) subsequent... | 08/03/1999 |
| 5847798 | Polymer stabilized black-white cholesteric reflective display A new liquid crystalline light modulating cell and material are characterized by liquid crystalline light modulating material of liquid crystal and polymer, the liquid crystal being a chiral nematic liquid crystal having positive dielectric anisotropy and... | 12/08/1998 |
| 5844653 | Liquid crystal mixture Disclosed and claimed is a liquid crystal mixture, a liquid crystal device and a display device using the liquid crystal mixture. The liquid crystal display device according to the present invention has improved contrast due to the specific temperature of... | 12/01/1998 |
| 5748274 | LCD having a voltage being applied to the LC in the chiral nematic phase prior to the display driving A liquid crystal device comprising a pair of parallel base plates and a ferroelectric liquid crystal disposed between the base plates. One of the pair of parallel base plates is provided with a plurality of stepwise elevations disposed in the form of stri... | 05/05/1998 |
| 5746939 | Liquid crystal device A liquid crystal device having a cell structure comprising a pair of base plates and a smectic liquid crystal having cholesteric phase at a higher temperature side; the ratio (P/d) of the spiral pitch of the cholesteric phase (P) to the spacing between th... | 05/05/1998 |
| 5648830 | Liquid crystal device having composition of at least two smectic compounds and one cholesteric compound A liquid crystal device is constituted by (a) a pair of base plates each having an orientation control film thereon, and (b) a liquid crystal composition interposed between the base plates. The liquid crystal composition comprises at least two liquid crys... | 07/15/1997 |
| 5604614 | Liquid crystal device with one liquid crystal showing a cholesteric phase and one showing a chiral smectic phase A liquid crystal device is constituted by (a) a pair of base plates each having an orientation control film thereon, and (b) a liquid crystal composition interposed between the base plates. The liquid crystal composition comprises at least two liquid crys... | 02/18/1997 |
| 5604616 | Dual function electro-optical display device exhibiting a bistable image or a fugitive image depending the applied voltage A dual function electro-optical display device operates as a bistable display when driven at one voltage, and operates as a nematic display when driven at another voltage. In the first mode, the image in the display zone is formed by applying a first elec... | 02/18/1997 |
| 5539555 | High contrast distorted helex effect electro-optic devices and tight ferroelectric pitch ferroelectric liquid crystal compositions useful therein Fast response, high contrast Ferroelectric Liquid Crystal (FLC) electro-optic devices in which the FLC retains a helical director structure stable to unwinding are provided. In particular, high contrast distorted helix FLC electro-optic devices including ... | 07/23/1996 |
| 5537237 | Chiral smectic C liquid crystal display with a chevron structure and δθ equal to 0.9 to 1.0 at 25° C. A ferroelectric liquid crystal display device includes a pair of substrates on which an electrode is selectively formed on the surface, an insulating film and an orientation film are formed thereon and uniaxial orientation processing is performed and whic... | 07/16/1996 |
| 5502584 | Process for producing ferroelectric liquid crystal device A liquid crystal device suitable as a display device is produced through a process wherein a chiral smectic liquid crystal is injected into a blank cell in a temperature where two higher temperature phases, such as isotropic phase and cholesteric phase or... | 03/26/1996 |
| 5422033 | Phase transition-type liquid crystal composition A phase transition-type liquid crystal composition including a mixture of ester-type liquid crystal compound and chiral nematic liquid crystal compound having added thereto at least one of ethane-type liquid crystal compound and bicyclohexane-type liquid ... | 06/06/1995 |
| 5274484 | Gradation methods for driving phase transition liquid crystal using a holding signal A method for driving a phase transition type liquid crystal display device having a liquid crystal display panel, fabricated by filling and sealing a phase transition type liquid crystal in a space formed between two substrates including two groups of ele... | 12/28/1993 |
| 5247379 | Chiral nematic liquid crystal device with linear electroclinic effect An electro-optical device including a chiral nematic liquid crystal disposed between flat plates treated to weakly enforce molecular orientation along one preferred direction parallel to the plates. The plates are spaced by a distance small compared to th... | 09/21/1993 |
| 5189534 | Liquid crystal color displays which cool from isotropic to twisted nematic to smectic A color display formed of information of one color on a different color background is projected onto a screen. Light from the bulb is passed serially through a neutral polarizer, a smectic liquid crystal cell, and a further polarizer. The cell comprises a... | 02/23/1993 |
| 5172256 | Liquid crystal variable color density lens and eye protective devices incorporating the same The present invention is a novel and improved variable color/variable density optical system (10) adapted for use in a variety of lens and window applications. The preferred device embodying the invention is a novel optical sunlight protective device (12)... | 12/15/1992 |
| 5160451 | Mechanical component A mechanical component consisting of solid bodies which are mobile relative to one another under a variable frictional force and are separated from one another by a fluid organic mass, characterized in that the change in frictional force is induced by pha... | 11/03/1992 |
| 5140448 | Apparatus for and method of operation of smectic liquid crystal light valve having scattering centers A liquid crystal light valve, comprising a layer of liquid crystal for storing image information and a photoconductor aligned with the liquid crystal and positioned in closed proximity thereto for effecting an electric field applied across the liquid crys... | 08/18/1992 |
| 5067795 | Adjustable transparency spectacles Eyewear has variable transparency provided by a lens made of a non-diffusing dichroic liquid crystal cell with nematic-cholesteric phase change. A voltage source supplies an adjustable voltage to the liquid crystal cell; adjustment of the voltage to chang... | 11/26/1991 |
| 5059000 | Image forming medium and image forming apparatus using same An image forming medium is constituted by a laminate including at least an optical scattering layer and a backing member preferably comprising a pattened color filter. The laminate is composed to have an interface between the optical scattering layer and ... | 10/22/1991 |
| 5046830 | Ferroelectric liquid crystal device with specific pitch in each of a cholesteric and a smectic phase A ferroelectric liquid crystal device, in which orientation is applied for either one of both or two substrates having transparent electrodes formed thereon for arranging the liquid crystal molecules in parallel with the substrate and a ferroelectric crys... | 09/10/1991 |
| 5040879 | Variable density optical filter A light scattering liquid crystal transducer in which the degree of light scattering is controlled by impressing an electric field across the cell during and immediately after the application of a high-energy short duration thermal pulse applied to the en... | 08/20/1991 |
| 5016983 | Drive method of liquid crystal device A method for driving a twisted nematic type liquid crystal shutter, the liquid crystal shutter having a pair of transparent substrates held opposite to each other; a pair of patterned transparent electrodes each formed on the planes of the transparent sub... | 05/21/1991 |
| 4969719 | Smectic liquid crystal devices A liquid crystal display is arranged to provide very low minimum light trmission in one of its two switchable states. This makes it useful for a shutter (FIG. 1) and for high contrast digital displays (FIG. 2). A layer of a chiral smectic liquid crystal ... | 11/13/1990 |
| 4884877 | Liquid crystal temperature sensor and materials utilizing microencapsulated liquid crystal The present invention relates to liquid crystal temperature indicating compositions, preferably absent cholesteric liquid crystal material, and the containing of such compositions in volumes formed in a containment medium that tends to distort the liquid ... | 12/05/1989 |
| 4832461 | Projection-type multi-color liquid crystal display device A bright and large information capacity projection-type multi-color liquid crystal display is realized by a display device which includes a liquid crystal panel having a plurality of layers of cholesteric-nematic phase transition type liquid crystals havi... | 05/23/1989 |
