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Class 349/163 - Nonchiral additive in the liquid crystal material


Subclass of Class 349 - Liquid crystal cells, elements and systems
Definition: Subject matter wherein a material is added to the liquid
No. of patents: 64
Last issue date: 12/28/2010


1    
NumberTitleIssue Date
7859637Use of a storage capacitor to enhance the performance of an active matrix driven electronic display
A system and method of use of a storage capacitor to improve the appearance and addressing characteristics of an electronically driven display. The capacitor is formed by the overlap of portions of electrodes used to address different pixels, or by the overlap of an...
12/28/2010
7420647Method for producing liquid crystal display device having a controlled parameter to obtain prescribed optical characteristics
The present invention relates to a method for producing a liquid crystal display device, in which a pretilt angle and a tilt direction upon application of a voltage of liquid crystal molecules are controlled by using a polymer and is to provide a method for producin...
09/02/2008
7365359Organic semiconductor material and organic semiconductor element
An organic semiconductor material having high charge mobility characteristics and an organic semiconductor element is provided. The organic semiconductor material has rodlike low-molecular liquid crystallinity, including a skeleton structure comprising L 6 π electr...
04/29/2008
7279203Liquid crystal panel
A liquid crystal panel is provided that has a liquid crystal layer sandwiched between a pair of substrates, wherein the liquid crystal layer comprises a liquid crystal and a cross-linked resin, the cross-linked resin comprises a cross-linked structural part adhered ...
10/09/2007
7110155Light modulation apparatus, image pickup apparatus, and drive methods therefor
Disclosed are a light modulation apparatus including a liquid crystal device; and a polarizing plate disposed in an optical path of light made incident on said liquid crystal device; wherein said liquid crystal device is of a guest-host type using a negative type li...
09/19/2006
5784141Bi-stable non-pixellated phase spatial light modulator for enhanced display resolution and method of fabrication
A phase spatial light modulator composed of a liquid crystal cell having molecular orientation recorded during the fabrication process as a direct result of a photochemical reaction exerted upon the liquid crystal material, a mechanically-induced change o...
07/21/1998
5574593Liquid crystal display element and laminated retardation film applied thereto
A bright reflective liquid-crystal display element with high contrast which does not require a polarizer is provided together with a laminated retardation film applied thereto. Row electrodes are formed on the surface of an upper substrate, and on the sur...
11/12/1996
5552915Liquid crystal non-linear, photorefractive electro-optical storage device having a liquid crystal film including dopant species of C60 or C70
Persistent director axis reorientation is induced in a liquid crystal film in response to a projected optical image by a method that includes the following steps: applying adc potential across the liquid crystal film; exposing the liquid crystal film to a...
09/03/1996
5543945Method of driving an LCD employing combining two voltages which change polarity at different times in a frame
The present invention discloses a method of operating an active matrix liquid crystal display device having a liquid crystal layer between a pair of substrates and at least one active device to each of picture element electrodes on at least one of the sub...
08/06/1996
5489451Reversibly crosslinked orientable liquid crystalline polymers
The invention relates to reversibly crosslinked, orientable liquid crystalline (LC) polymer films, comprised of an LC poly(meth)acrylate PP and/or a mixture of PP with low molecular weight crosslinking components. The inventive films have numerous applications...
02/06/1996
5453217Liquid crystal composition and liquid crystal display device
A liquid crystal composition comprising a fluorine liquid crystal material and at least one azo dichroic dye selected from each of the groups (A), (B), (C) and (D) represented by the following general formulae (I)-(IV): ##STR1##...
09/26/1995
5422036Liquid crystal display device and preparation thereof
A liquid crystal display device having a pair of electrodes at least one of which is transparent and a composite film which is placed between the pair of electrode and contains a low molecular weight liquid crystal, a side-chain type polymer liquid crysta...
06/06/1995
5413657Method of making compensator for liquid crystal display
A compensator for a liquid crystal display device is made by applying a solution containing a liquid crystalline polymer onto an orientation substrate, then allowing the liquid crystalline polymer to be oriented, and thereafter transferring the resulting ...
05/09/1995
5409634Near infrared absorbers and display/recording materials using the same
Near infrared absorbers which have a molecular extinction coefficient of 200,000 or more and are represented by the formula (I) ##STR1## wherein each of Y1, Y2, Y3, Y4, Y5, Y6, Y7...
04/25/1995
5395550Amphiphilic telomers
Telomers of the structure ##STR1## are disclosed, where R is --CH3 or H; R' is a C5 to C18 alkyl or fluoroalkyl group; n is an integer between 2 and 6 inclusive; and x is an integer between 3 and 26 inclusive. These t...
03/07/1995
5385690Liquid-crystalline elastomers or thermoset materials having a fixed anisothropic network structure
The invention relates to a process for the preparation of liquid-crystalline elastomers or thermoset materials having a fixed, anisotropic network structure, characterized in that liquid-crystalline elastomers containing reactive radicals having unreacted...
01/31/1995
5357358Nematic liquid crystal display with surface bistability and control by flexoelectric effect
A bistable liquid crystal optical device includes two transparent plates (12, 14) provided with control electrodes (18, 19), between which is placed a nematic liquid crystal material (20). The transparent plates (12, 14) are surface-treated so as to defin...
10/18/1994
5350537Liquid crystal display device
A liquid crystal display device comprising a pair of substrates each having transparent electrodes over the surface thereof and an orientation film over the electrode, and a liquid crystal interposed between the pair of substrates, the liquid crystal bein...
09/27/1994
5348688Optical power limiters and materials therein
A liquid crystal modified by the addition of an organic dye is used as a non-linear optical material in two devices which limit the optical radiations to sensitive photodetectors. One device uses the self-focusing induced in the crystal to disperse high-i...
09/20/1994
5333075Ferroelectric liquid crystal mixtures containing lipohilizing, lipophilic or amphiphilic compounds for eliminating ionic impurities
Electro-optical display devices having a cell thickness of 1 to 10 μm, and containing ferroelectric liquid crystalline mixture, electrodes, alignment layer(s), in which the ferroelectric liquid crystalline mixture has a spontaneous polarization of Ps>20n...
07/26/1994
5227904Ferroelectric liquid crystal device
A ferroelectric liquid crystal device includes a pair of substrates which has electrodes formed in an opposing spatial relation to each other. At least one of the electrodes is optically transparent. A parallel aligned, obliquely evaporated film is formed...
07/13/1993
5155607Optical modulation display device and display method using the same
An optical modulation display device is disclosed, comprising a polymer matrix having dispersed therein a liquid crystal composition containing a photochromic compound as a constituting component, or comprising a photochromic polymer matrix having dispers...
10/13/1992
5087387Light modulating material and method for preparing same
An improved light modulating material for use in electro-optic and thermo-optic display devices is produced by forming a homogeneous solution comprising an acrylic resin containing active hydrogen groups, a liquid crystal material, a diisocyanate or epoxi...
02/11/1992
5037575Squarilium compound and liquid crystal composition containing the same
A squarilium compound represented by the following formula (I) and a liquid crystal composition containing the same are disclosed: ##STR1## wherein X and Y each represents ##STR2## wherein R1 represents a hydrogen atom, an alkyl group...
08/06/1991
5024784Device for reversible optical data storage using polymeric liquid crystals
A device for reversible optical information storage with a polymeric liquid crystalline storage medium, with the storage medium consisting of a macroscopically oriented film of a liquid crystalline polymer that contains photochromic groups, and with the i...
06/18/1991
5011623Nonlinear optical material and nonlinear optical device
A nonlinear optical material is provided by mixing a polymer liquid crystal having a chiral center and a nonlinear optical compound. The polymer liquid crystal may be a ferroelectric polymer liquid crystal. The nonlinear optical material is preferably in ...
04/30/1991
4992203Non-linear optics
Optical elements having non-linear optical properties comprising a compound of the formula: ##STR1## wherein D is an electron donor A is an electron acceptor; and W, X, Y and Z are each independently H or any group capable of attachment to the pyrazo...
02/12/1991
4992202Non-linear optics
Optical elements having non-linear optical properties comprising a compound of the formula: ##STR1## wherein E is an electron donor A is an electron acceptor; and W, X, Y & Z are each independently H or any group capable of attachment to the pyrazoly...
02/12/1991
4961874Optically active tolan derivatives
Novel optically active tolan derivative represented by the general formula (I) and process for preparing thereof; ##STR1## (wherein all the symbols are the same as defined in the appended claims) are disclosed. These are effective for use in preparat...
10/09/1990
4946623Process for the production of a ferromagnetic composition, ferromagnetic liquid crystal obtained by this process and apparatus using said liquid crystal
There is provided a process for the production of a composition and, in particular, of a ferromagnetic liquid crystal. The process comprises (1) forming a micro-emulsion by dispersing an aqueous solution containing ferrous cations and ferric cations in an...
08/07/1990
4915868Optically active esters of 1-acylproline as dopes in liquid-crystal mixtures, and novel optically active esters of 1-acylproline
Optically active esters of 1-acylproline of the general formula ##STR1## in which at least one of the radicals R1 and R2 is a mesogenic radical, are suitable as dopes in ferroelectric liquid-crystal mixtures. Proline derivatives...
04/10/1990
4886718Device for reversible optical data storage
The invention relates to a device for reversible optical information storage, which comprises polymeric liquid crystals as a storage medium. The device contains a film comprised of a liquid crystal main chain polymer, as a storage medium, and is construct...
12/12/1989
4855376Side chain liquid crystalline polymers exhibiting nonlinear optical properties
This invention provides novel sidechain liquid crystalline polymers which exhibit nonlinear response, and which have utility as a transparent nonlinear optical component in optical light switch and light modulator devices. An invention sidechain liquid cr...
08/08/1989
4783150Thermally electrically or magnetically controllable lyotropic liquid crystal optical devices
Thermally, electrically or magnetically controllable lyotropic liquid crystal optical devices. The optical device comprises two insulating walls (6, 8) joined together by their edges by means of a sealing joint (9) and a lyotropic liquid crystal film (10)...
11/08/1988
4767565Switching time shortening dopants for liquid crystalline mixtures
Compounds of the general formula Cm H2m+2, wherein m signifies 10 to 35, are added to liquid crystalline nematic substances to shorten the switching time of the substances when used in opto-electronic components....
08/30/1988
4749261Shatter-proof liquid crystal panel with infrared filtering properties
Liquid crystal material is operable to modulate light transmitted through a panel such as a sunroof, window or partition. The panel may have safety glazing properties. The panel may also include means for reflecting infrared energy. The liquid crystal mat...
06/07/1988
4733949Liquid crystal display device
In a liquid crystal display device produced by forming an orientation controlling film on each surface of upper and lower substrates having an electrode, placing a liquid crystal composition between said substrates, and then sealing the periphery of the s...
03/29/1988
4729639Dual frequency addressable liquid crystals and methods of use
A twisted nematic liquid crystal material used in a dual-frequency addressable liquid crystal cell is disclosed. Specific materials include an eutectic mixture of 2-5 monoester compounds having the formula R--X--Y--CO2 --Z--R', wherein R and R'...
03/08/1988
4701029Laser addressed smectic displays
A laser beam addressed smectic display in which the laser beam is used to write clear tracks in an optically scattering field employs an anisotropic conductivity dopant in the liquid crystal filling so that the cell can be electrically set into the scatte...
10/20/1987
4681404Liquid crystal device and driving method therefor
A liquid crystal device for time-division driving comprising a plurality of picture elements arranged in a plurality of rows. Each picture element is composed of opposite electrodes, a layer of a ferroelectric liquid crystal having a volume resistivity of...
07/21/1987
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