Abstract: The liquid crystal display device according to the present invention includes a pair of substrates, and a liquid crystal layer disposed between the pair of substrates, wherein the liquid crystal layer includes a liquid crystal material having a negative dielectric constant anisotropy, at least one of the pair of substrates is provided with an alignment film for vertically aligning adjacent liquid crystal molecules, and a polymer layer formed on the alignment film for controlling the alignment of the adjacent liquid crystal molecules, the polymer layer is formed by polymerization of at least one monomer, the polymerization being initiated by radicals generated of the monomer upon absorption of light, the alignment film includes a polymer compound having a main chain that contains an imide structure, and the main chain has an imidization ratio of less than 50%.

Abstract: The present invention provides a liquid crystal display device in which image sticking seldom occurs. The liquid crystal display device according to the present invention includes a pair of substrates, and a liquid crystal layer disposed between the pair of substrates, wherein the liquid crystal layer includes a liquid crystal material having a negative dielectric constant anisotropy, at least one of the pair of substrates is provided with an alignment film for vertically aligning adjacent liquid crystal molecules, and a polymer layer formed on the alignment film for controlling the alignment of the adjacent liquid crystal molecules, and the polymer layer is formed by polymerization of at least one monomer, the polymerization being initiated by radicals generated of the monomer upon absorption of light.

Abstract: The liquid crystal display device according to the present invention includes a pair of substrates, and a liquid crystal layer disposed between the pair of substrates, wherein the liquid crystal layer includes a liquid crystal material having a negative dielectric constant anisotropy, at least one of the pair of substrates is provided with an alignment film for vertically aligning adjacent liquid crystal molecules, and a polymer layer formed on the alignment film for controlling the alignment of the adjacent liquid crystal molecules, the polymer layer is formed by polymerization of at least one monomer, the polymerization being initiated by radicals generated of the monomer upon absorption of light, the alignment film includes a polymer compound having a main chain that contains an imide structure, and the main chain has an imidization ratio of 50% or more.

Abstract: The present invention provides a liquid crystal display device that exhibits sufficiently excellent display qualities, has sufficient adhesive strength between the pair of substrates, and has excellent reliability; and a method for producing the same.

Abstract: The present invention provides a liquid crystal display device in which display defects and reduction in the voltage holding ratio are not likely to occur even without alignment films. That is, the liquid crystal display device of the present invention includes: a pair of substrates each substantially having no alignment film; a liquid crystal layer which is disposed between the pair of substrates and contains a liquid crystal material; and a polymer layer which is formed on a surface of at least one of the substrates and controls alignment of liquid crystal molecules, the polymer layer being formed by polymerization of one or more kinds of radical polymerizable monomers added to the liquid crystal layer, at least one kind of the radical polymerizable monomers being a compound generating radicals through a self-cleavage reaction by exposure to light and having at least two radical polymerizable groups.

Abstract: The present invention provides a liquid crystal display device, including: a first substrate and a second substrate; a liquid crystal layer that contains a liquid crystal material and is sandwiched between the first substrate and the second substrate; and a polymer layer that controls the alignment of liquid crystal molecules and is formed on at least one of the first substrate and the second substrate. The first substrate has a first electrode, and the polymer layer is formed by polymerizing one or more radical-polymerizable monomers added to the liquid crystal layer. At least one of the radical-polymerizable monomers is a compound represented by P-Sp1-Z2-A1-(Z1-A2)n1-Z3-Sp2-P. (In the formula, P represents a radical-polymerizable group. Sp1 and Sp2 each represent a direct bond or an alkylene group or the like. A1 represents a divalent aromatic hydrocarbon group or the like. A2 represents a phenylene group or the like.

Abstract: The present invention provides a liquid crystal composition for forming a polymer layer capable of keeping high voltage holding ratio. The liquid crystal composition in an aspect of the present invention contains a liquid crystal material and one or more kind monomers and, at least one of the monomers is a compound produced by further bonding a hydrocarbon group with 12 carbon atoms or more to a compound produced by bonding two polymerizable groups to a cyclic aliphatic compound or aromatic compound with 6 carbon atoms or more.

Abstract: The present invention provides a liquid crystal display device in which display defects are not easily generated even when an alignment film is not formed. The liquid crystal display device of the present invention includes a pair of substrates; and a liquid crystal layer that is held between the pair of substrates, wherein both substrates of the pair of substrates do not substantially include an alignment film, at least one substrate of the pair of substrates includes a polymer layer that controls the alignment of liquid crystal molecules adjacent thereto, the polymer layer is formed by polymerization of monomers of at least one kind included in a liquid crystal layer composition, and the monomers of at least one kind contain a compound represented by the following formula (1): (wherein A represents an acrylate group, a methacrylate group, an ethacrylate group, a vinyl group, or an allyl group; a represents 0 or 1; and m represents a natural number of 4 to 12).

Abstract: The present invention provides a liquid crystal display device that is less likely to have display failures and has high reliability and excellent light resistance in aging. The present invention relates to a liquid crystal display device, including: a pair of substrates; a liquid crystal layer containing liquid crystal molecules and interposed between the pair of substrates; and an alignment control layer for perpendicularly aligning the liquid crystal molecules, the alignment control layer being formed by polymerizing a monofunctional monomer and a polyfunctional monomer in a liquid crystal composition containing the liquid crystal molecules, the monofunctional monomer, and the polyfunctional monomer, the polyfunctional monomer generating a radical by annealing and irradiation with light at not less than 340 nm, the monofunctional monomer having a biphenyl skeleton as a core and a polymerizable group bonded to the biphenyl skeleton directly or indirectly via a spacer.

Abstract: The present invention provides a liquid crystal display device in which a display defect is less likely to occur even when an alignment layer is not formed. The liquid crystal display device of the present invention includes a pair of substrates and a liquid crystal layer held between the pair of substrates, at least one of the substrates including an electrode, and the liquid crystal layer having negative dielectric anisotropy, in which each of the pair of substrates includes a silane coupling layer on a surface of the corresponding substrate, a polymer layer configured to vertically align adjacent liquid crystal molecules is formed on a surface of the silane coupling layer, the polymer layer is formed by the polymerization of at least one monomer contained in a liquid crystal composition, and the at least one monomer contains a compound represented by the chemical formula (1).

Abstract: This liquid crystal display device (100) includes: a vertical alignment liquid crystal layer (3); a pixel electrode (11) and a counter electrode (21) arranged on first and second substrates (1, 2), respectively, to front on the liquid crystal layer; and first and second alignment films (12, 22). Each pixel region (10) includes first, second, third and fourth liquid crystal domains (A, B, C, D) in which liquid crystal molecules (3a) are tilted in first, second, third and fourth predetermined directions, respectively, which are defined so that an angle formed between any two of them is approximately equal to an integral multiple of 90 degrees. The first liquid crystal domain is located close to at least a part of edges of the pixel electrode, which includes a first edge portion (EG1) where an azimuthal direction (e1) perpendicular to the part and pointing toward the inside of the pixel electrode defines an angle greater than 90 degrees to the first direction.

Abstract: An object of the present invention is to provide a liquid crystal display device in which a risk of generation of a image sticking is reduced. A liquid crystal display device (100) of the present invention includes a pair of glass substrates (11) and (21), a liquid crystal layer (30) provided between the pair of glass substrates (11) and (21), an alignment layer (23) provided between the liquid crystal layer (30) and at least one of the pair of glass substrates (11) and (21), and an alignment sustaining layer (24) for defining a direction in which liquid crystal molecules constituting the liquid crystal layer (30) are inclined, the alignment sustaining layer (24) being provided between the alignment layer (23) and the liquid crystal layer (30), the alignment layer (23) and the alignment sustaining layer (24) being covalently bound to each other.

Abstract: The present invention provides a liquid crystal display device in which a display failure is unlikely to occur even in the case of forming no alignment film. The liquid crystal display device according to the present invention includes a pair of substrates having substantially no alignment film; a liquid crystal layer which is sandwiched between the substrates and which contains a liquid crystal material; and a polymer layer which is formed on a surface of at least one of the substrates and which controls the alignment of molecules of a liquid crystal. The polymer layer is one formed by polymerizing at least one monomer contained in the liquid crystal layer. The monomer contains a compound represented by Chemical Formula (1).

Abstract: The present invention provides a liquid crystal display device in which display defects and reduction in the voltage holding ratio are not likely to occur even without alignment films. That is, the liquid crystal display device of the present invention includes: a pair of substrates each substantially having no alignment film; a liquid crystal layer which is disposed between the pair of substrates and contains a liquid crystal material; and a polymer layer which is formed on a surface of at least one of the substrates and controls alignment of liquid crystal molecules, the polymer layer being formed by polymerization of one or more kinds of radical polymerizable monomers added to the liquid crystal layer, at least one kind of the radical polymerizable monomers being a compound generating radicals through a self-cleavage reaction by exposure to light and having at least two radical polymerizable groups.

Abstract: A liquid crystal display device includes source bus lines, gate bus lines intersecting with the source bus lines, pixels arranged in a matrix to correspond to intersections between the gate bus lines and the source bus lines, each of the pixels including a TFT, a pixel electrode, a common electrode, and a liquid crystal layer, and a potential control section for controlling the potential of the common electrode. The potential control section sets a voltage, obtained by reducing potential Vcenf255 of the common electrode at which flicker is minimum in display of gray level as black display and gray level as white display alternately every pixel by a predetermined voltage, as center voltage Vcen255 of the potential of the common electrode in display of gray level for all the pixels.

Abstract: The present invention provides a liquid crystal alignment agent capable of preventing a decrease in voltage holding ratio (VHR), a liquid crystal display containing such a liquid crystal alignment agent, and a method for manufacturing such a liquid crystal display. Aspects of the present invention include a liquid crystal alignment agent containing at least one polymer selected from a polyamic acid and an imide polymer thereof and at least one difunctional monomer having an anthracene or phenanthrene structure, a liquid crystal display including an alignment film formed on at least one of an active substrate and a counter substrate using the above liquid crystal alignment agent, and a method for manufacturing a liquid crystal display including the steps of forming an active substrate and forming a counter substrate, at least one of which includes forming an alignment film on the active substrate or the counter substrate using the above liquid crystal alignment agent.

Abstract: The present invention provides a liquid crystal display device in which display defects are not easily generated even when an alignment film is not formed. The liquid crystal display device of the present invention includes a pair of substrates; and a liquid crystal layer that is held between the pair of substrates, wherein both substrates of the pair of substrates do not substantially include an alignment film, at least one substrate of the pair of substrates includes a polymer layer that controls the alignment of liquid crystal molecules adjacent thereto, the polymer layer is formed by polymerization of monomers of at least one kind included in a liquid crystal layer composition, and the monomers of at least one kind contain a compound represented by the following formula (1): (wherein A represents an acrylate group, a methacrylate group, an ethacrylate group, a vinyl group, or an allyl group; a represents 0 or 1; and m represents a natural number of 4 to 12).

Abstract: The present invention provides a liquid crystal display device including a polymer layer which is placed on an alignment layer and which controls the alignment of liquid crystal molecules adjacent thereto. The polymer layer is one formed by polymerizing a monomer added to the liquid crystal layer. The monomer is a compound represented by the following formula: P1-A1-(Z1-A2)n-P2??(I) where P1 and P2 are identical to or different from each other and represent an acrylate group or a methacrylate group; Z1 represents one or more groups which are identical to or different from each other and which are COO, OCO, or O or indicates that A1 and A2 or A2 and A2 are directly bonded to each other; a hydrogen atom may be substituted by a hydrogen atom, a methyl group, an ethyl group, or a propyl group; A1 and A2 represent specific phenanthrene groups which are identical to or different from each other. A backlight includes a light source including at least one light-emitting diode.

Abstract: To provide a liquid crystal display panel that has high contrast and reduced display deficiency, a liquid crystal display panel of the present invention includes: a pair of substrates (1) and (2) facing each other; and a liquid crystal layer (3) sandwiched between the pair of substrates (1) and (2), the pair of substrates (1) and (2) being provided with a pair of respective alignment films (4) and (5) formed thereon and facing each other, the pair of alignment films (4) and (5) being provided with respective polymer films (6) and (7) formed thereon and each made of a monomer in the liquid crystal layer (3), the pair of alignment films (4) and (5) containing a macromolecular compound having a side chain containing a fluorine atom, the liquid crystal layer (3) containing a polymerizable monomer represented by at least one of General Formulae (1) through (3), the polymer films (6) and (7) each being made of the polymerizable monomer represented by at least one of General Formulae (1) through (3), the polymer fil

Abstract: The present invention provides a liquid crystal display device in which image sticking seldom occurs. The liquid crystal display device according to the present invention includes a pair of substrates, and a liquid crystal layer disposed between the pair of substrates, wherein the liquid crystal layer includes a liquid crystal material having a negative dielectric constant anisotropy, at least one of the pair of substrates is provided with an alignment film for vertically aligning adjacent liquid crystal molecules, and a polymer layer formed on the alignment film for controlling the alignment of the adjacent liquid crystal molecules, and the polymer layer is formed by polymerization of at least one monomer, the polymerization being initiated by radicals generated of the monomer upon absorption of light.