Patent ID: 9193906
Filing Date: 2015-11-24
Classification: C09K,G02B,G02F

Abstract:
1. A liquid crystal display device comprising a first substrate, a second substrate, a liquid crystal composition layer held between the first substrate and the second substrate, a color filter that includes a black matrix and at least RGB three-color pixel portions, a pixel electrode, and a common electrode, the liquid crystal composition layer being constituted by a liquid crystal composition containing 30 to 50% of a compound represented by general formula (I) (in general formula (I), 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 and A represents a 1,4-phenylene group or a trans-1,4-cyclohexylene group), 5 to 20% of a compound represented by general formula (II-1) (in general formula (II-1), 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 8carbon atoms, or an alkenyloxy group having 2 to 8 carbon atoms and 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), 25 to 45% of a compound represented by general formula (II-2) (in general formula (II-2), R 5 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 6 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, and B represents a trans-1,4-cyclohexylene group or a 1,4-phenylene group which may be substituted with fluorine), and 5 to 20% of a compound represented by general formula (III) (in general formula (III), R 7 and R 8 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; D, E, F, and G each independently represent trans-1,4-cyclohexylene or a 1,4-phenylene group which may be substituted with fluorine; Z 2 represents a single bond, —OCH 2 —, —OCO—, —CH 2 O—, or —COO—; n represents 0 or 1; and when n represents 0, Z 2 represents —OCH 2 —, —OCO—, —CH 2 O—, or —COO— or D, E and G each represent a 1,4-phenylene group which may be substituted with fluorine), wherein a G pixel portion of the RGB three-color pixel portions contains, as a coloring material, a halogenated metal phthalocyanine pigment that contains, as a central metal, a metal selected from the group consisting of Al, Si, Sc, Ti, V, Mg, Fe, Co, Ni, Zn, Ga, Ge, Y, Zr, Nb, In, Sn, and Pb, where when the central metal is trivalent, the central metal is bonded to one halogen atom, hydroxyl group, or sulfonic acid group or is oxo- or thio-bridged and when the central metal is a tetravalent metal, the central metal is bonded to one oxygen atom or two selected from a halogen atom, a hydroxyl group, and a sulfonic acid group, the selected two being the same or different from each other.