Abstract: A polymerizable compound has a high polymerizability, a high conversion ratio and a high solubility in a liquid crystal composition. A polymerizable composition contains the compound. A liquid crystal composite is prepared from the composition. A liquid crystal display device includes the liquid crystal composite. The polymerizable compound is formed in which the polymerizable compound has at least two polymerizable groups in which at least one polymerizable group is acryloyloxy or methacryloyloxy, and at least one remaining polymerizable group is a polymerizable group selected from the group of groups represented by formulas (P-1), (P-2) and (P-3). In formulas (P-1) to (P-3), R1 to R8 are independently hydrogen, fluorine, methyl, ethyl or trifluoromethyl.

Abstract: A compound represented by formula (1), a liquid crystal composition to which the compound is added, and a liquid crystal display device containing the composition. In formula (1), R1 is hydrogen or alkyl having 1 to 20 carbons, or the like; R2 and R3 are independently methyl, ethyl, isopropyl, or t-butyl; ring A is 1,4-cyclohexylene, 1,4-phenylene or the like; Z is a single bond or alkylene having 1 to 6 carbons, or the like; and m is 0, 1, or 2.

Abstract: Liquid crystal compound satisfying at least one of physical properties such as high stability to heat or light, high maximum temperature, high clearing point, low minimum temperature of liquid crystal phase, small viscosity, suitable optical-anisotropy, large negative dielectric-anisotropy, suitable elastic constant and good compatibility with other liquid crystal compounds; liquid crystal composition containing the compound; and liquid crystal display device including the composition. Compound represented by formula (1), wherein R1 is alkyl having 1 to 15 carbons; R2 is alkyl having branched-chain and 3 to 15 carbons; A1, A2 are independently 1,2-cyclopropylene; Z1, Z2 are independently single bond or alkylene having 1 to 15 carbons; L1, L2 are fluorine, chlorine, —OCF3 or —OCH2F; X1, X2 are oxygen or sulfur; and a is 0 or 1, b is 0 or 1, and sum of a and b is 0, 1 or 2.

Abstract: Subject It is to provide a polymerizable compound having a high polymerization reactivity, a high conversion yield and a high solubility in a liquid crystal composition, a polymerizable composition including this compound, a liquid crystal composite prepared from this polymerizable composition and a liquid crystal display device containing this composite. Means for solving the Subject A compound represented by formula (1), the liquid crystal composition and the liquid crystal display device. In the formula, for example, ring A1, ring A2 and ring A4 are phenylene or cyclohexylene; Sp1 and Sp2 are a single bond or alkylene having 1 to 6 carbons; Z1 and Z2 are —CH?CH— or —C?C—; a is 1, b is 0; and P1 and P2 are a polymerizable group.

Abstract: A compound is represented by formula (1). In formula (1), R1 is hydrogen, fluorine, alkyl or the like; ring A1 and ring A2 are independently 1,4-cyclohexylene, 1,4-phenylene or the like; Z1, Z2 and Z3 are independently a single bond, —COO— or the like; X1 is hydrogen, fluorine, —CF3, or —OCF3; L1 and L2 are independently hydrogen or fluorine; and a is 0 or 1, and b is 0 or 1.

Abstract: The invention provides a liquid crystal compound satisfying at least one of physical properties such as a high stability to heat or light, a high clearing point (or a high maximum temperature), a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a small dielectric anisotropy, a suitable elastic constant and a good compatibility with other liquid crystal compounds, a liquid crystal composition including this compound, and a liquid crystal display device containing this composition. The invention provides a compound represented by formula (1): where R1 and R2 is alkyl having 1 to 20 carbons or the like; one of L1 and L2 is both hydrogens, and the other is both fluorines; Z1 and Z2 are independently a single bond, —COO—, —OCO—, —OCH2—, —CH2O—, —CF2O—, —OCF2—, —CH2CH2—, —CH?CH—, —C?C— or the like.

Abstract: A polymerizable compound having high polymerization reactivity, a high conversion ratio and high solubility in a liquid crystal composition, a polymerizable composition containing the compound, a liquid crystal composite prepared from the composition and a liquid crystal display device having the composite are shown. The polymerizable compound has three or four rings in a serial arrangement and not being mutually condensed, and has three or more polymerizable groups among which at least one is bonded with a ring which is not an either terminal of the three or four rings. The polymerizable composition contains the above polymerizable compound and a liquid crystal composition. The liquid crystal composite is prepared from the above polymerizable composition, and the liquid crystal display device has the liquid crystal composite.

Abstract: To provide a compound having an effect for preventing photolysis of a liquid crystal composition, and having a high solubility in the liquid crystal composition, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. The compound is represented by formula (1), the liquid crystal composition contains the compound, and the liquid crystal display device includes the composition. In formula (1), R1, R2, R3 and R4 are independently hydrogen or alkyl having 1 to 4 carbons; ring A1 and ring A2 are independently 1,4-cyclohexylene, 1,4-phenylene or the like; Z1, Z2 and Z3 are independently a single bond, alkylene or the like; and n is 0, 1 or 2.

Abstract: A liquid crystal composition including an antioxidant, and a liquid crystal display device containing this composition are described. The liquid crystal composition has a nematic phase, has a high solubility in a liquid crystal composition, and includes a specific antioxidant useful for preventing deterioration of the composition. The liquid crystal composition may also include a specific compound having a high maximum temperature or a small viscosity as a first component, a specific compound having a high maximum temperature or a large dielectric anisotropy as a second component, and a specific compound having a large negative dielectric anisotropy as a third component.

Abstract: Provided are a compound having an effect on preventing photolysis of a liquid crystal composition, and high solubility in the liquid crystal composition, a liquid crystal composition containing the compound and a liquid crystal display device including the composition. A compound is represented by formula (1), a liquid crystal composition contains the compound and a liquid crystal display device uses the composition. In formula (1), for example, R1 is alkyl having 1 to 10 carbons; R2 is hydrogen, hydroxy, oxy radical or alkyl; ring A1, ring A2 and ring A3 are independently 1,4-cyclohexylene, 1,4-phenylene or pyridine-2,5-diyl; Z1 and Z2 are independently a single bond or alkylene; and a and b are independently 0 or 1.

Abstract: A compound, represented by formula (1): wherein, R1 and R2 are alkyl having 1 to 15 carbons or the like; ring A1 is tetrahydropyran-2,5-diyl, and ring A2 and ring A3 are 2-fluoro-1,4-phenylene or 2-chloro-1,4-phenylene; Z1, Z2 and Z3 are a single bond or the like; and a and b are 0 or 1, and a sum of a and b is 1.

Abstract: Provided is a compound having an effect on preventing photolysis of a liquid crystal composition and having a high solubility in the liquid crystal composition, a liquid crystal composition containing the compound and a liquid crystal display device including the composition. The compound is represented by formula (1), the liquid crystal composition contains the compound, and the liquid crystal display device uses the composition: wherein in formula (1), R1, R2, R3 and R4 are independently hydrogen or alkyl having 1 to 4 carbons; R5 is hydrogen, hydroxy, oxy radical, alkyl having 1 to 10 carbons or alkoxy having 1 to 10 carbons; ring A1 is 1,4-cyclohexylene, 1,4-cyclohexenylene or the like; Z1 and Z2 are independently a single bond or alkylene having 1 to 10 carbons; and a is 0, 1, 2 or 3.

Abstract: The invention provides a liquid crystal compound satisfying at least one of physical properties such as a high stability to heat or light, a high clearing point (or a high maximum temperature), a low minimum temperature of a liquid crystal phase, a small viscosity, a suitable optical anisotropy, a small dielectric anisotropy, a suitable elastic constant and a good compatibility with other liquid crystal compounds, a liquid crystal composition including this compound, and a liquid crystal display device containing this composition. The invention provdes a compound represented by formula (1): where R1 and R2 is alkyl having 1 to 20 carbons or the like; one of L1 and L2 is both hydrogens, and the other is both fluorines; Z1 and Z2 are independently a single bond, —COO—, —OCO—, —OCH2—, —CH2O—, —CF2O—, —OCF2—, —CH2CH2—, —CH?CH—, —C?C— or the like.

Abstract: A liquid crystal compound represented by R1 and R2 are independently hydrogen, fluorine, chlorine, alkyl or the like; ring A1 and ring A3 are independently 1,4-cyclohexylene, 1,4-phenylene or the like; and A2 is a divalent group represented by formula (A-1) or formula (A-2) Z1, Z2, Z3, Z4 and Z5 are independently a single bond, —COO— or the like; and a to d is 0, 1 or the like.

Abstract: To provide a liquid crystal compound having high polymerization reactivity, a high conversion ratio and high solubility in a liquid crystal composition, a polymerizable composition containing the compound, a liquid crystal composite prepared using the composition, and a liquid crystal display device including the composite. The liquid crystal display device prepared using the polymerizable composition containing the compound represented by formula (1): wherein, in formula (1), P1 to P6 are a polymerizable group; S1 to S6 are a single bond, alkylene or the like; a1, a3 and a4 are an integer from 0 to 4, a2 is an integer from 1 to 4; ring A1 to ring A4 are a divalent group derived from benzene, naphthalene, anthracene, pyrimidine, pyridine or the like; Z1 to Z3 are a single bond, alkylene or the like, and at least one of Z1, Z2 and Z3 is —C?C—; and b1 is 0 or 1.

Abstract: The disclosure shows a liquid crystal composition that contains a compound having an effect of preventing photolysis of the liquid crystal composition and having high solubility in the liquid crystal composition, and that satisfies at least one of characteristics such as high maximum temperature, low minimum temperature, small viscosity, suitable optical anisotropy, large positive or negative dielectric anisotropy, large specific resistance, high stability to ultraviolet light or heat, and a suitable elastic constant, etc. and so on. The disclosure shows a liquid crystal composition that contains a compound having the following azolidine ring (Q-1) or azepane ring (Q-2), a liquid crystal display device and so on.

Abstract: Provided is a compound having an effect on preventing photolysis of a liquid crystal composition and having a high solubility in the liquid crystal composition, a liquid crystal composition containing the compound and a liquid crystal display device including the composition. The compound is represented by formula (1), the liquid crystal composition contains the compound, and the liquid crystal display device uses the composition. In formula (1), R1, R2, R3 and R4 are independently hydrogen or alkyl having 1 to 4 carbons; R5 is hydrogen, hydroxy, oxy radical, alkyl having 1 to 10 carbons or alkoxy having 1 to 10 carbons; ring A1 is 1,4-cyclohexylene, 1,4-cyclohexenylene or the like; Z1 and Z2 are independently a single bond or alkylene having 1 to 10 carbons; and a is 0, 1, 2 or 3.

Abstract: A liquid crystal composition is provided containing a compound that is effective in preventing photolysis of the liquid crystal composition, and has high solubility in the liquid crystal composition. A liquid crystal display device including the composition is also provided. The liquid crystal composition contains a compound represented by formula (1), and a liquid crystal display device uses the composition: in which, in formula (1), R1 to R8 are hydrogen or alkyl having 1 to 4 carbons; ring A1 and ring A2 are cyclohexylene, phenylene, or naphthalenediyl; Z1, Z2 and Z3 are a single bond; and a and b are independently 1 or 2, and c is 0, 1 or 2.

Abstract: A polymerizable compound is provided having suitable polymerization reactivity, high conversion and high compatibility in a liquid crystal composition, a polymerizable composition containing the compound, a liquid crystal composite prepared using the composition, and a liquid crystal display device having the composite. The polymerizable compound has at least one monovalent group (A). The polymerizable composition contains the compound. The liquid crystal composition and the liquid crystal composite is prepared using the polymerizable composition. The liquid crystal display device has the liquid crystal composite. In the monovalent group (A), R1 and R2 are independently alkyl having 1 to 3 carbons, and in the alkyl, at least one of hydrogen may be replaced by fluorine, and R3 is hydrogen or methyl.

Abstract: To provide a compound having an effect for preventing photolysis of a liquid crystal composition, and having a high solubility in the liquid crystal composition, a liquid crystal composition containing the compound, and a liquid crystal display device including the composition. The compound is represented by formula (1), a liquid crystal composition contains the compound, and a liquid crystal display device includes the composition: M(Z-Q)a(Rb)b??(1) wherein, in formula (1), a is 1 to 4, and b is a numerical value: (4?a); M is an organic group; Z is a single bond or the like; and Q is a monovalent group represented by formula (Q-1), (Q-2) or (Q-3), in which Ra and Rb are hydrogen, alkyl or the like.