Liquid crystal display device

摘要

The present invention relates to a liquid crystal display device including a specific liquid crystal composition and a sealant containing the cured product of a specific curable resin composition.;The present invention provides a liquid crystal display device which prevents a decrease in the voltage holding ratio (VHR) of the liquid crystal layer and an increase in ion density (ID) and which enables elimination of problematic defective display such as voids, uneven alignment, and screen burn-in.;Since the liquid crystal display device of the present invention prevents a decrease in the voltage holding ratio (VHR) of the liquid crystal layer and enables a reduction in defective display such as uneven alignment and screen burn-in, it is particularly useful for active-matrix liquid crystal display devices of an IPS mode and FFS mode and can be applied to liquid crystal display apparatuses such as liquid crystal TVs, monitors, mobile phones, and smartphones.

主权项

1. A liquid crystal display device comprising a first substrate, a second substrate, a liquid crystal layer containing a liquid crystal composition and disposed between the first and second substrates, and a cured product of a curable resin composition which is cured by being exposed to an energy ray or heat, the first and second substrates being attached to each other by the cured product, wherein the liquid crystal composition contains at least one compound represented by General Formula (I) (where R31 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; M31 to M33 each independently represent a trans-1,4-cyclohexylene group or a 1,4-phenylene group, one or two —CH2— moieties of the trans-1,4-cyclohexylene group are optionally substituted with —O— such that oxygen atoms do not directly adjoin each other, and one or two hydrogen atoms of the phenylene group are optionally substituted with fluorine atoms; X31 and X32 each independently represent a hydrogen atom or a fluorine atom; Z31 represents a fluorine atom, a trifluoromethoxy group, or a trifluoromethyl group; n31 and n32 each independently represent 0, 1, or 2, and n31+n32 is equal to 0, 1, or 2; in the case where M31 is multiple, the multiple M31's are the same as or different from each other; and in the case where M33 is multiple, the multiple M33's are the same as or different from each other) and at least one compound selected from the group consisting of compounds represented by General Formulae (II-b) to (II-f) (where R21 to R30 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 X21 represents a hydrogen atom or a fluorine atom), and the curable resin composition contains a compound having at least one (meth)acrylic group and at least one epoxy group per molecule and has a hydrogen-bonding functional group value from 3×10−3 to 5×10−3 mol/g.