Abstract: According to the present invention, provided is a liquid crystal display device in which a polymer layer having a stable alignment regulating force is formed.

Abstract: The present invention provides a liquid crystal display device that includes a horizontal alignment film, stabilizes liquid crystal alignment by the PSA technique, can suppress the increase in power consumption, reduction in contrast, and image sticking in display, and has long-term reliability. The present invention is a liquid crystal display device including a pair of substrates, a liquid crystal layer interposed between the pair of substrates, a horizontal alignment film formed on at least one of the pair of substrates, and a polymer layer which is formed on the horizontal alignment film and controls the alignment of adjacent liquid crystal molecules, wherein the polymer layer is formed by the polymerization of at least one or more kinds of monomers added into the liquid crystal layer, and at least one of the one or more kinds of monomers is polymerized by itself functioning as a polymerization initiator by being irradiated with light.

Abstract: The present invention provides a method of producing a liquid crystal display device which enables suppression of the occurrence of an electric double layer on a horizontal photo-alignment film before a polymer is formed, and exhibits reduced deterioration of display quality such as image sticking, or reduced display unevenness. The present invention is a method of producing a liquid crystal display device including the steps of (1) forming a liquid crystal layer containing a polymerizable monomer between a first substrate and a second substrate; (2) thermally annealing the liquid crystal layer at a temperature higher by 10° C. or more than the liquid crystalline phase-isotropic phase transition temperature of the liquid crystal layer; (3) forming horizontal alignment films to which the alignment treatment is performed by light irradiation on the first substrate and the second substrate by the time of the step (2); and (4) polymerizing the polymerizable monomer after the step (2).

Abstract: A liquid crystal display device suppresses generation of image sticking in AC mode. A liquid crystal display device comprises an alignment film arranged on at least one of a pair of substrates. The alignment film comprises a polymer containing a first constitutional unit and a second constitutional unit. The first constitutional unit controls alignment of the liquid crystal molecules by photoirradiation. The second constitutional unit controls alignment of the liquid crystal molecules regardless of photoirradiation.

Abstract: The present invention provides a liquid crystal display device in which a good alignment state can be obtained, and the occurrence of AC image sticking can be suppressed. The present invention is a liquid crystal display device including a liquid crystal layer including liquid crystal molecules and being interposed between a pair of substrates, and an alignment layer provided on a side of the liquid crystal layer in at least one of the substrates, wherein the alignment layer includes a liquid crystal alignment polymer having a property of controlling and aligning the liquid crystal molecules, and the surface side chain density in the alignment layer is not less than 2.0.

Abstract: The present invention provides a liquid crystal display device capable of suppressing generation of the image sticking in AC mode and a polymer for alignment film materials.

Abstract: The present invention provides a liquid crystal display device that has good reliability and can inhibit an image sticking phenomenon even when a comparatively low temperature is set for baking the alignment layer, and a method for manufacturing such a liquid crystal display device. The liquid crystal display device of the prevent invention includes a configuration in which a liquid crystal layer including liquid crystal molecules is sandwiched between a pair of substrates, and includes an alignment layer on a surface of at least one of the substrates on the liquid crystal layer side thereof. The alignment layer is obtained by performing an aligning treatment by light irradiation on a layer formed using an alignment layer material including a first constituent material and a second constituent material. The first constituent material demonstrates a property of controlling the alignment of the liquid crystal molecules under light irradiation.

Abstract: The present invention provides a liquid crystal display device capable of suppressing generation of the image sticking in AC mode and a polymer for alignment film materials.