Abstract: A liquid crystal display device (a display device) includes a liquid crystal panel (a display panel) having an outer peripheral edge portion having a substantially circular shape and including linear edge portions that are linear at a part of the outer peripheral edge portion, and flexible printed circuit boards (mounting components) mounted in an outer portion of the liquid crystal display panel to match arrangement of the linear edge portions in a circumferential direction.

Abstract: A display panel includes a substrate and a display medium layer held on the substrate and has a display region and a frame region outside the display region and a hole on an inner side of the frame region penetrating the substrate and the display medium layer. The display panel further includes a hole-periphery sealing part disposed on the substrate at a side facing the display medium layer so as to surround the hole, in which the hole-periphery sealing part is made of: a first sealing member having a broken loop shape, surrounding the hole, having at least one open section; and at least one second sealing member provided at a location corresponding to the one open section so as to seal said at least one open section.

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: A liquid crystal display device includes: a lateral casing portion in the shape of a lateral wall which has an inner lateral surface provided in an annular arrangement; a panel structure including at least a liquid crystal panel, the liquid crystal panel including a pair of substrates, a liquid crystal layer held between the pair of substrates, and a seal material, the panel structure being housed in a housing space defined by the inner lateral surface of the lateral casing portion; and a resin material filling at least part of a gap formed between the inner lateral surface of the lateral casing portion and a lateral end face of the liquid crystal panel, wherein the seal material of the liquid crystal panel is covered with the resin material and the lateral casing portion.

Abstract: A display device structure that, even if a plurality of non-display parts are formed in a pixel region, can display an image in the whole pixel region except the non-display parts is obtained. A display device 1 includes: a substrate (10) having a plurality of non-display parts in a pixel region (P); a plurality of source lines (SL1), (SL2), . . . , (SLm); a plurality of gate lines (GL1), (GL2), . . . , (GLm); a plurality of pixel electrodes; and a plurality of gate line drive circuits (GDk) formed in the pixel region (P) and connected to each of the gate lines (GL1), (GL2), . . . , (GLm), for controlling a potential of the gate line (GLk). At least a source line interrupted by any of the plurality of non-display parts, among the source lines (SL1), (SL2), . . . , (SLm) is supplied with a data signal from both ends thereof, and the source lines (SL1), (SL2), . . . , (SLm) are each formed not to be interrupted by two or more of the plurality of non-display parts.

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 capable of maintaining a high voltage holding ratio even without an alignment film. The liquid-crystal display device of the present invention includes a pair of substrates, a liquid crystal layer which is sandwiched between the substrates and which contains a liquid crystal material, and a polymer layer which is disposed on a surface of each of the substrates and which controls the alignment of liquid crystal molecules. The outermost surfaces of both the substrates comprise substantially no alignment film. The polymer layer is formed by polymerizing one or more radical polymerizable monomer species added to the liquid crystal layer. At least one species of the one or more radical polymerizable monomer species is a biphenyl compound having a specific structure.

Abstract: The present invention provides a liquid-crystal display device capable of maintaining a high voltage holding ratio even without an alignment film. The liquid-crystal display device of the present invention includes a pair of substrates, a liquid crystal layer which is sandwiched between the substrates and which contains a liquid crystal material, and a polymer layer which is disposed on a surface of each of the substrates and which controls the alignment of liquid crystal molecules. The outermost surfaces of both the substrates comprise substantially no alignment film. The polymer layer is formed by polymerizing one or more radical polymerizable monomer species added to the liquid crystal layer. At least one species of the one or more radical polymerizable monomer species is a biphenyl compound having a specific structure.

Abstract: The present invention provides a liquid crystal display device less likely to cause peeling even with a narrow frame, and capable of achieving both a horizontal alignment mode and a vertical alignment mode without conventional alignment films; and a method for producing the liquid crystal display device. The liquid crystal display device includes a pair of substrates disposed to face each other; a liquid crystal layer and a sealing material disposed between the substrates; and an alignment control layer designed to control the alignment of liquid crystal molecules and disposed between each of the substrates and the liquid crystal layer, the substrates being in direct contact with the sealing material, the alignment control layers each being made of a polarized-light-absorbing compound, the polarized-light-absorbing compound containing in a molecule at least one of a phenylene group and a phenyl group and at least one of a carbonyl group and an azo group.

Abstract: Provided is an active matrix substrate that can protected from static electricity, with the frame region being narrowed. An active matrix substrate (20a) includes a plurality of first lines (GL), a plurality of second lines (SL), and a protection part (50). The first lines are formed in a display region (30). The second lines are formed in the display region, and intersect with the first lines. The protection part protects the active matrix substrate from static electricity. The protection part includes a plurality of first protection circuits (50A), and a conductive unit (50B). The first protection circuits are connected to each of the first lines in the display region. The conductive unit is connected to each of the first protection circuits in the display region. Each of the first protection circuits, according to a potential of the first line to which the first protection circuit is connected, allows the first line and the conductive unit to be conductive with each other.

Abstract: The present invention provides a liquid crystal display device that can prevent a decrease in the VHR and image sticking on the display screen because of residual DC voltage, and also can produce favorable alignment conditions; and a production method thereof. The liquid crystal display device of the present invention includes: a pair of substrates; a liquid crystal layer that contains liquid crystal molecules and is disposed between the pair of substrates; and an alignment film that is disposed on a liquid crystal layer side of at least one of the pair of substrates, the alignment film containing a polyamic acid or a polyimide with an imidization ratio of less than 100%, the liquid crystal display device including a monomolecular film on the alignment film.

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: A display panel (10) includes a pair of substrates (11, 12) a display medium layer (14) held between the pair of substrates and has a display region (RA) and a frame region (RF) outside the display region and a hole (10A) on an inner side of the frame region penetrating the pair of substrates and the display medium layer. The display panel further includes a hole-periphery sealing part (13A) disposed between the pair of substrates so as to surround the hole, in which the hole-periphery sealing part includes an angled portion or a protrusion (13P).

Abstract: A display panel includes a substrate and a display medium layer held on the substrate and has a display region and a frame region outside the display region and a hole on an inner side of the frame region penetrating the substrate and the display medium layer. The display panel further includes a hole-periphery sealing part disposed on the substrate at a side facing the display medium layer so as to surround the hole, in which the hole-periphery sealing part is made of: a first sealing member having a broken loop shape, surrounding the hole, having at least one open section; and at least one second sealing member provided at a location corresponding to the one open section so as to seal said at least one open section.

Abstract: A liquid crystal display device (100) includes: a lateral casing portion (20) in the shape of a lateral wall which has an inner lateral surface (20s) provided in an annular arrangement; a panel structure (5) including at least a liquid crystal panel (10), the liquid crystal panel (10) including a pair of substrates (11, 12), a liquid crystal layer (14) held between the pair of substrates, and a seal material (16), the panel structure being housed in a housing space defined by the inner lateral surface of the lateral casing portion; and a resin material (30) filling at least part of a gap formed between the inner lateral surface of the lateral casing portion and a lateral end face of the liquid crystal panel, wherein the seal material (16) of the liquid crystal panel is covered with the resin material (30) and the lateral casing portion (20).

Abstract: An aspect of the present invention provides a monomer from which a polymer layer capable of keeping high display quality even in high temperature and high humidity environments can be formed. The monomer in an aspect of the present invention is a compound represented by P-Sp1-Z2-A1-(Z1-A2)n1-Z3-Sp2-P: in the formula, P denotes the same or different radical polymerizable group; and at least one of Z1, Z2, and Z3 denotes —NRCO— or —CONR— group.

Abstract: The present invention provides a liquid-crystal display device capable of maintaining a high voltage holding ratio even without an alignment film. The liquid-crystal display device of the present invention includes a pair of substrates, a liquid crystal layer which is sandwiched between the substrates and which contains a liquid crystal material, and a polymer layer which is disposed on a surface of each of the substrates and which controls the alignment of liquid crystal molecules. The outermost surfaces of both the substrates comprise substantially no alignment film. The polymer layer is formed by polymerizing one or more radical polymerizable monomer species added to the liquid crystal layer. At least one species of the one or more radical polymerizable monomer species is a biphenyl compound having a specific structure.

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: 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 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).