Patent ID: 9436032
Filing Date: 2016-09-06
CPC Classification: C09K,G02B,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, a color filter constituted by a black matrix and at least RGB three-color pixel portions, a pixel electrode, and a common electrode, wherein the liquid crystal composition layer contains a liquid crystal composition that contains one or more compounds represented by general formula (I), (in the formula, R 31 represents an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, an alkenyl group having 2 to 10 carbon atoms, or an alkenyloxy group having 2 to 10 carbon atoms; M 31 to M 33 each independently represent a trans-1,4-cyclohexylene group or a 1,4-phenylene group, one or two —CH 2 — in the trans-1,4-cyclohexylene group may be substituted with —O— as long as oxygen atoms are not directly adjacent to each other, and one or two hydrogen atoms in the phenylene group may be substituted with fluorine atoms; X 31 and X 32 each independently represent a hydrogen atom or a fluorine atom; Z 31 represents a fluorine atom, a trifluoromethoxy group, or a trifluoromethyl group; n 31 and n 32 each independently represent 0, 1, or 2 and n 31 +n 32 is 0, 1, or 2; and when a plurality of M 31 and M 33 are present, the plurality of M 31 may be the same or different and the plurality of M 33 may be the same or different) and that contains one or more compounds selected from the group consisting of compounds represented by general formula (II-a) to general formula (II-f), (in the formulae, R 19 to R 30 each independently represent an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, or an alkenyl group having 2 to 10 carbon atoms; and X 21 represents a hydrogen atom or a fluorine atom), the color filter is a color filter containing an organic pigment, the organic pigment having a slope parameter of 2 or less, wherein in a scattering profile analysis of the organic pigment in the color filter, the analysis including a step (A) of measuring an ultra-small angle X-ray profile of the organic pigment by ultra-small angle X-ray scattering, a step (B) of calculating a curve point on the scattering profile, a step (C) of calculating an analysis region (c1) set in accordance with the curve point, and a step (D) of calculating the slope parameter in the analysis region c1.