Patent ID: 9250476
Filing Date: 2016-02-02
CPC Classification: C09K,G02F

Claim Text:
1. A liquid crystal display device comprising: a first substrate, a second substrate, a liquid crystal composition layer sandwiched between the first substrate and the second substrate, an electrode that is disposed on at least one of the first substrate and the second substrate and controls liquid crystal molecules in the liquid crystal composition layer, and a vertical alignment film that is disposed on at least one of the first substrate and the second substrate and controls an alignment direction of liquid crystal molecules in the liquid crystal composition layer so that the alignment direction is substantially vertical to a surface of the first substrate and a surface of the second substrate that are adjacent to the liquid crystal composition layer, wherein the vertical alignment film is formed of a cured product of a polymerizable liquid crystal compound, in which an alignment direction of the polymerizable liquid crystal compound at a surface adjacent to the liquid crystal composition layer is substantially vertical to the surface of the first substrate and the surface of the second substrate that are adjacent to the liquid crystal composition layer, and wherein a liquid crystal composition constituting the liquid crystal composition layer contains a compound represented by general formula (I) (In the formula, R 1 and R 2 each independently represent an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or an alkenyloxy group having 2 to 8 carbon atoms; A represents a 1,4-phenylene group or a trans-1,4-cyclohexylene group; 1 represents 1 or 2; and when 1 is 2, the two A may be the same or different from each other) and a compound represented by general formula (II) (In the formula, R 3 represents an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 2 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or an alkenyloxy group having 2 to 8 carbon atoms; R 4 represents an alkyl group having 1 to 8 carbon atoms, an alkenyl group having 4 to 8 carbon atoms, an alkoxy group having 1 to 8 carbon atoms, or an alkenyloxy group having 3 to 8 carbon atoms; B represents a 1,4-phenylene group or a trans-1,4-cyclohexylene group; m represents 0, 1, or 2; and when m is 2, the two B may be the same or different from each other).