LIQUID-CRYSTAL DISPLAY ELEMENT

摘要

An object of the present invention is to provide a liquid-crystal display element using a liquid-crystal composition having negative dielectric anisotropy, capable of realizing excellent display characteristics by being used in a liquid-crystal display element provided with a photo-alignment film, without deteriorating various characteristics as a liquid-crystal display element such as dielectric anisotropy, viscosity, a nematic phase upper limit temperature, nematic phase stability at low temperatures, and γ1, and burn-in characteristics of a display element. A liquid-crystal display element using a liquid-crystal composition containing at least one compound selected from the group consisting of compounds represented by the following General Formula (I) is provided.;

主权项

1. A liquid-crystal display element, comprising:
a first substrate and a second substrate disposed to face each other; a liquid-crystal layer containing a liquid-crystal composition with which the gap between the first substrate and the second substrate is filled; an electrode layer including a common electrode including a transparent conductive material, a plurality of gate bus lines and data bus lines disposed in a matrix shape, a thin film transistor provided at the intersection at which the gate bus lines and the data bus lines intersect each other, and a pixel electrode including a transparent conductive material and forming an electric field between the common electrode and the pixel electrode by being driven by the thin film transistor, for each pixel on the first substrate; and photo-alignment film layers which are formed between the liquid-crystal layer and the first substrate and between the liquid-crystal layer and the second substrate, respectively, wherein the liquid-crystal composition has negative dielectric anisotropy, a nematic phase-isotropic liquid transition temperature of equal to or higher than 60° C., and an absolute value of the dielectric anisotropy of equal to or greater than 2, and contains at least one compound selected from the group consisting of compounds represented by the following General Formula (I): wherein each of R1 and R2 independently 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, A represents a 1,4-phenylene group or a trans-1,4-cyclohexylene group, k represents 1 or 2, and in a case where k is 2, two A's may be the same as or different from each other.