Abstract: A liquid-crystalline media comprising one or more compounds of formula S where the parameters have the meaning defined in claim 1, and one or more compounds of the formula I and one or more compounds of the formula II or one or more compounds of the formula I and one or more compounds of the formula III or one or more compounds of the formula II and one or more compounds of the formula III or one or more compounds of the formula I and one or more compounds of the formula II and one or more compounds of the formula III: in which the parameters have the meaning indicated in claim 1, and to components comprising these media for high-frequency technology, in particular phase shifters and microwave array antennas.

Abstract: A liquid crystal cell which is capable of switching between a transparent mode and a scattering mode by using a non-ionic compound as a liquid crystal additive for realizing the EHDI characteristics and has excellent performance such as a driving voltage characteristic, a haze characteristic and reliability by securing solubility of the additive for liquid crystals. Such a liquid crystal cell can be applied to various light modulation devices such as a smart window, a window protective film, a flexible display device, a light shielding plate for transparent display, an active retarder for 3D image display, or a viewing angle adjusting film.

Abstract: A liquid crystal device includes a first substrate and a second substrate facing each other, a first electrode disposed between the first substrate and the second substrate and adjacent to the first substrate, a second electrode disposed between the first substrate and the second substrate and adjacent to the second substrate, a first alignment film disposed between the first electrode and the second electrode and adjacent to the first electrode, a second alignment film disposed between the first electrode and the second electrode and adjacent to the second electrode, and a liquid crystal layer disposed between the first alignment film and the second alignment film, wherein the liquid crystal layer includes a liquid crystal portion containing liquid crystal molecules, and a hydrophobic portion containing a hydrophobic material, the liquid crystal portion and the hydrophobic portion are phase-separated from each other, and the hydrophobic portion includes fluorine.

Abstract: A method for obtaining a material containing mesogenic compounds forming a liquid crystal mix with a stabilized blue phase. The method includes the steps of a) inducing the liquid crystal mix, contained in a chemical composition, to form the blue phase, then b) illuminating the chemical composition with a light beam of visible wavelength in order to trigger the polymerization of monomers contained in the chemical composition, to obtain the material comprising the liquid crystal mix in the blue phase stabilized by the polymerized monomers. The chemical composition contains a mesogenic system and a chemical photo-initiator system adapted to trigger the polymerization of the monomers when illuminated by the light beam of visible wavelength, in which the mesogenic system includes the mesogenic compounds forming the liquid crystal mix, a chiral dopant adapted to induce the blue phase, and a monomer mix comprising the monomers adapted to polymerize.

Abstract: A polymerizable composition includes a polymerizable liquid crystal compound of Formula (I) and a urethane (meth)acrylate monomer including a urethane bond and three or more (meth)acryloyl groups: Q1-Sp1A-Lm-1A-Sp2-Q2??(I) In Formula (I), A represents a cyclic divalent group (at least one is a divalent saturated hydrocarbon ring group), L preferably represents —C(?O)O— or —OC(?O)—, m represents 3 to 12, Sp1 and Sp2 preferably are alkylene, and any one of Q1 and Q2 represents a polymerizable group. A film including a layer obtained by curing the polymerizable composition; and a film adjacently including a layer obtained by curing the polymerizable composition including a polymerizable liquid crystal compound represented by Formula (I) and a layer obtained by curing a composition including a urethane (meth)acrylate monomer and a manufacturing method thereof, are also disclosed.

Abstract: Liquid-crystalline media containing one or more compounds of formulae I-1, I-2 and/or I-3 and one or more compounds of formulae II and/or III and components containing these media for high-frequency technology, in particular phase shifters and microwave array antennas.

Abstract: A stabilizer represented by formula I, wherein M represents cyclopentyl, cyclobutyl or cyclopropyl; Z1 and Z2 each independently represent a single bond, —CH2—, —CH2CH2—, —O—, —CH2O—, —OCH2— or —COO—; represents one or two of and n represents 0, 1 or 2.

Abstract: A polymerizable liquid crystal compound represented by Formula (I): Q1—Sp1—[A—L]—A—Sp2—Q2??(I) A represents a divalent nitrogen-containing saturated cyclic group (that may have a substituent) formed by removing two hydrogen atoms from piperidine or piperazine, a phenylene group that may have a substituent, or a trans-1,4-cyclohexylene group that may have a substituent; L represents a linking group such as —C(?O)O— or —OC(?O)—; m represents 3 to 12; Sp1 and Sp2 represent an alkylene group having 1 to 20 carbon atoms; any one of Q1 and Q2 represents a polymerizable group; and Formula (I) has a nitrogen-containing saturated cyclic group and a phenylene group that are directly bonded to each other via —C(?O)O—. By using a polymerizable composition including the polymerizable liquid crystal compound, a film such as a retardation film can have low birefringence or a reflection film can have high selectivity in a reflection wavelength range.

Abstract: A compound capable of suppressing the occurrence of alignment defects and lowering the phase transition temperature of a liquid crystal composition without impairing optical characteristics is provided. In particular, a compound represented by formula (A) is provided in which the variable groups are as defined in the specification.

Abstract: A polymerizable liquid crystal compound represented by formula (1). In formula (1), A1 is 1,4-phenylene, 1,4-cyclohexylene, 1,4-cyclohexenylene, pyridine-2,5-diyl, 1,3-dioxane-2,5-diyl or naphthalene-2,6-diyl, Z1 is a connecting group, m and n are independently an integer from 0 to 5, in which an expression: 1?m+n?8 holds, X1 is alkylene having 1 to 5 carbons, in which an atom thereof may be replaced by a hetero atom, and at least one of R1 is a polymerizable functional group.

Abstract: A polyimide polymer that includes the reaction product of: (a) at least one diamine selected from the group consisting of a diamine of Structure (I) (b) at least one tetracarboxylic acid dianhydride, and optionally (c) at least one compound containing a first functional group reactive with an amine or an anhydride and at least one second functional group selected from the group consisting of an unsubstituted alkenyl group and an unsubstituted alkynyl group. Each variable in the above formula is defined in the specification.

Abstract: A liquid crystal display device includes a first substrate, a second substrate facing the first substrate, and a liquid crystal layer interposed between the first substrate and the second substrate. The liquid crystal layer includes liquid crystal molecules having a negative dielectric anisotropy, a response speed of about 4.0 ms or less, and a rotational viscosity of about 47 mPa·S to about 75 mPa·S.

Abstract: A resin containing a structural unit derived from a compound represented by the formula (aa) wherein T, R1 and Z1 are defined in the specification.

Abstract: A photoreactive liquid crystal composition containing (A) a photoreactive polymer liquid crystal which includes a photoreactive side chain in which at least one type of reaction selected from (A-1) photocrosslinking and (A-2) photoisomerization occurs, and (B) a low molecular weight liquid crystal. An optical element or display element is formed having a liquid crystal cell including the photoreactive liquid crystal composition.

Abstract: A liquid crystal display device in which a good voltage holding ratio is retained for a long period of time and occurrence of image sticking and stain in a display screen is prevented by using a photo-alignment film. The liquid crystal display device includes an active matrix liquid crystal panel and a backlight. The liquid crystal panel includes a liquid crystal layer, a pair of substrates that sandwich the liquid crystal layer in between, and an alignment film disposed on a liquid crystal layer side surface of each of the substrates. The alignment films are photo-alignment films formed from a material that exhibits a photo-alignment characteristic, and contain carboxyl groups on the liquid crystal layer side. The liquid crystal layer contains a liquid crystal material and at least one kind of quinone derivative selected from the group consisting of benzoquinone derivatives and anthraquinone derivatives.

Abstract: A compound which is represented by a formula (IIa), wherein each of Y1 to Y8 independently represents a chemical single bond, —O—, —S—, —O—C(?O)—, —C(?O)—O—, —O—C(?O)—O—, —NR1—C(?O)—, —C(?O)—NR1—, —O—C(?O)—NR1—, —NR1—C(?O)—O—, —NR1—C(?O)—NR1—, —O—NR1—, or —NR1—O—, R1 represents a hydrogen atom or an alkyl group; each of G1 and G2 independently represents a divalent linear aliphatic group; each of Z1 and Z2 independently represents an alkenyl group; Ax represents a group represented by a formula (II), wherein X represents —NR2—, an oxygen atom, a sulfur atom, and R2 represents a hydrogen atom or an alkyl group; D represents an alkylene group or a cycloalkanediyl group; A1 represents a trivalent aromatic group; each of A2 and A3 independently represents a divalent alicyclic hydrocarbon group; each of A4 and A5 independently represents a divalent aromatic group; Q1 represents a hydrogen atom, or an alkyl group.

Abstract: Bimesogenic compounds of formula I and their use in liquid crystal media and in flexoelectric liquid crystal devices.

Abstract: A liquid crystal display device includes: a first base substrate; a first electric field generating electrode disposed on the first base substrate; a liquid crystal layer disposed on the first electric field generating electrode and including liquid crystals; and a first wavelength absorbing layer disposed between the first electric field generating electrode and the liquid crystal layer, and configured to absorb a portion of an incident light wavelength.

Abstract: New polymers are provided comprising (i) one or more covalently linked photoacid generator moieties and (ii) one or more photoacid-labile groups, wherein the one or more photoacid generator moieties are a component of one or more of the photoacid-labile groups. Preferred polymers of the invention are suitable for use in photoresists imaged at short wavelengths such as sub-200 nm, particularly 193 nm.

Abstract: A liquid crystal composition, comprising, at least one compound represented by Formula 1-A: wherein, in the Formula 1-A, R—*, R1—*, Q-*, *—Z1-*, *—Z2-*, n1, n2, n3, n4, L1-*, L2-*, L3-*, L4-*, L5-*, L6-*, L7-*, and L8-* are the same as defined in the specification, and * is defined as a bonding site to a neighboring atom.