Abstract: A liquid crystal display panel includes: a liquid crystal layer including a liquid crystal material with positive dielectric constant anisotropy; a vertical alignment film being in contact with the liquid crystal layer; a first substrate and a second substrate disposed to face each other with the liquid crystal layer in between; and an electrode disposed on a surface of one or both of the first substrate and the second substrate and generating, in the liquid crystal layer, an electric field in a direction orthogonal to or intersecting with a normal to the first substrate.

Abstract: A liquid crystal display panel includes: a liquid crystal layer including a liquid crystal material with positive dielectric constant anisotropy; a vertical alignment film being in contact with the liquid crystal layer; a first substrate and a second substrate disposed to face each other with the liquid crystal layer in between; and an electrode disposed on a surface of one or both of the first substrate and the second substrate and generating, in the liquid crystal layer, an electric field in a direction orthogonal to or intersecting with a normal to the first substrate.

Abstract: The invention relates to an electrooptical systemwhich between 2 electrode layers contains a liquid crystal mixture and a further optically transparent polymer medium, in which one of the electrode layers is in the form of an active matrix having nonlinear addressing elements integrated with the image point, while the other electrode layer forms the counter electrode,whose liquid crystal molecules have irregular orientation in the switched-off state,in which one of the refractive indices of the liquid crystal mixture is substantially the same as the refractive index of the medium n.sub.m and/or in which the quotient from the weight of the liquid crystal mixture and the weight of the optically transparent medium is 1.

Abstract: It is an object of the present invention to provide a polymer dispersion-type liquid crystal display device having a high holding rate, a superior display quality and a high reliability; the liquid crystal display device according to the present invention composed of (i) a display electrode substrate, (ii) a counter electrode substrate and (iii) a liquid crystal layer interposed between said display electrode substrate and said counter electrode substrate, in which liquid crystals having a positive anisotropy in dielectric constant are dispersed in a transparent polymer; the transparent polymer is a photo cation polymerization setting-type transparent polymer and the liquid crystals are fluorine-containing aryl compounds.

Abstract: A nematic liquid-crystal composition for active matrix displays has a high voltage holding ratio and extremely good low temperature stability.

Abstract: Liquid Crystal compounds represented by the following formula are disclosed. ##STR1## wherein R and R' are independently selected from alkyl groups containing 1.about.20 carbon atoms; X is --O--, --O--CO--O-- or direct bond; A.sub.1 and A.sub.2 are independently cyclic groups (such as phenylene and biphenylene), said cyclic groups may be substituted with 1.about.4 fluorine, chlorine or bromine atoms, or 1 or 2 substituent groups selected from the group consisting of cyano, nitro and trifluoromethyl groups; Y is --CO--O--, --O--CO--, --C.tbd.C--, --CH.sub.2 O--, --OCH.sub.2 --, --CH.dbd.N--, --N.dbd.CH--, --N.dbd.N--, --CH.sub.2 S--, --SCH.sub.2 -- or direct bond; and * represents asymmetric atom providing optical activity.

Abstract: An improved ferroelectric liquid crystal light shutter device formed of an array of light shutter elements, each including a ferroelectric liquid crystal exhibiting a chiral smectic phase. The light shutter elements are divided into a plurality of groups for multiplexing in accordance with a predetermined duty ratio. The formerly memorized states of the light shutter elements belonging to one of the groups and the light shutter elements to be addressed in the next scanning sequence are erased. Thereafter, the erased light shutter elements are turned into a memorized "ON-state" or "OFF-state" in accordance with image data signals. The formerly memorized states of the light shutter elements other than those which are erased or memorized are maintained by the application of predetermined voltage levels.

Abstract: The liquid crystal material for use in a thermal writing liquid crystal element. The material contains essentially two components (a) and (c) or three components (a), (b) and (c);(a) one or more than one of the compounds represented by the formula (I): ##STR1## wherein R.sub.1 means a straight chain alkoxy radical, the carbon atom number n.sub.1 of which is 8, 9 or 10;(b) one or more than one of the compounds represented by the formula (II); ##STR2## wherein R.sub.2 means a straight chain alkyl radical, the carbon atom number n.sub.2 of which is 8 or 9; and(c) one or more than one of the compounds represented by the formula (III); ##STR3## wherein R.sub.3 means a straight chain alkyl or alkoxy radical, the carbon atom number of which is 8, 9, 10, 11 or 12.By such combinations of the components the material having a broad liquid crystal phase temperature range and enabling erasion at a low electric potential is obtained.

Abstract: In an improved image projector with liquid crystal light shutter, a layer of ferroelectric liquid crystals contained in a liquid crystal light shutter at which the light modulated linearly in accordance with image signals is produced is of the thickness of less than a helical pitch of molecules of the liquid crystals whereby a response time becomes as fast as, for instance, 0.18 ms and the time sharing operation can be performed in the liquid crystal light shutter.