A liquid crystal composition, and a liquid crystal display element or liquid crystal display including the liquid crystal composition and belonging to the field of liquid crystal display. The liquid crystal composition includes a compound represented by formula I, a compound represented by formula II, one or more compounds represented by formula III, and at least one polymerizable compound. The liquid crystal composition simultaneously has a low rotary viscosity, a large refractive index, and a fast response speed. ##STR00001##

A liquid crystal composition, and a liquid crystal display element or liquid crystal display including the liquid crystal composition and belonging to the field of liquid crystal display. The liquid crystal composition includes a compound represented by formula I, a compound represented by formula II, one or more compounds represented by formula III, and at least one polymerizable compound. The liquid crystal composition simultaneously has a low rotary viscosity, a large refractive index, and a fast response speed. ##STR00001##

A liquid crystal display device comprises a first substrate, a second substrate which faces the first substrate, an electrode part which is provided on at least one of the first substrate and the second substrate, and a liquid crystal layer which comprises a liquid crystal composition and is provided between the first substrate and the second substrate. The liquid crystal composition includes a liquid crystal compound of Formula 1. ##STR00001##
wherein R.sub.1, R.sub.2, A.sub.11, A.sub.12, A.sub.13, A.sub.21, A.sub.22, Z.sub.11, Z.sub.12, Z.sub.13, Z.sub.21, Z.sub.22, a, b, c, d, and e are as described herein.

The present invention provides a liquid crystal composition having negative dielectric anisotropy, large refractive index anisotropy, and low viscosity and containing as a first component, one or two or more compounds represented by general formula (I) and, as a second component, one or two or more compounds represented by general formula (II), wherein dielectric anisotropy (Δ∈) at 25° C. is −2.0 or less. Also, provided is a liquid crystal display device having high contrast, fast response, and excellent display quality without causing image sticking and display defects.

The present invention provides a liquid crystal composition having negative dielectric anisotropy, large refractive index anisotropy, and low viscosity and containing as a first component, one or two or more compounds represented by general formula (I) and, as a second component, one or two or more compounds represented by general formula (II), wherein dielectric anisotropy (Δ∈) at 25° C. is −2.0 or less. Also, provided is a liquid crystal display device having high contrast, fast response, and excellent display quality without causing image sticking and display defects.

A liquid crystal composition, and a liquid crystal display element or liquid crystal display comprising the liquid crystal composition, and belongs to the field of liquid crystal display. The liquid crystal composition comprises a compound represented by formula I, a compound represented by formula II, one or more compounds represented by formula III, and at least one polymerizable compound. The liquid crystal composition has a higher clearing point (CP), a large K value, a suitable optical anisotropy (Δn), and a fast response speed. ##STR00001##

A liquid crystal composition, and a liquid crystal display element or liquid crystal display comprising the liquid crystal composition, and belongs to the field of liquid crystal display. The liquid crystal composition comprises a compound represented by formula I, a compound represented by formula II, one or more compounds represented by formula III, and at least one polymerizable compound. The liquid crystal composition has a higher clearing point (CP), a large K value, a suitable optical anisotropy (Δn), and a fast response speed. ##STR00001##

A liquid crystal composition, and a liquid crystal display element or liquid crystal display comprising the liquid crystal composition, and belongs to the field of liquid crystal display, the liquid crystal composition of the present disclosure comprising a compound represented by formula I, one or more compounds represented by formula II, one or more compounds represented by formula III, and at least one polymerizable compound. The liquid crystal composition simultaneously has a low rotary viscosity (γ1), a larger dielectric anisotropy (Δε), and a fast response speed. ##STR00001##

A liquid crystal composition, and a liquid crystal display element or liquid crystal display comprising the liquid crystal composition, and belongs to the field of liquid crystal display, the liquid crystal composition of the present disclosure comprising a compound represented by formula I, one or more compounds represented by formula II, one or more compounds represented by formula III, and at least one polymerizable compound. The liquid crystal composition simultaneously has a low rotary viscosity (γ1), a larger dielectric anisotropy (Δε), and a fast response speed. ##STR00001##

An object of the present invention is to provide a composition that has positive Δ∈, exhibits a liquid crystal phase over a wide temperature range, has low viscosity, excellent solubility at low temperatures, and high resistivity and voltage holding ratio, and is stable against heat and light. By using this composition, IPS or TN liquid crystal display devices and the like that have excellent display quality and suppress display failures such as image-sticking and drop marks are provided in high yield.

Provided is a composition that contains at least one selected from the group consisting of compounds represented by general formulae (i) and (ii) and at least one selected from compounds represented by general formula (iii). Moreover, a liquid crystal display device using the composition and an IPS or FFS device that uses the composition are provided.