Patent application number | Description | Published |
20120293756 | LIQUID CRYSTAL DISPLAY DEVICE - The present invention provides a liquid crystal display device capable of enhancing the transmittance and the display quality. The liquid crystal display device includes a first substrate and a second substrate disposed to face each other, and a liquid crystal layer sandwiched between the first substrate and the second substrate, wherein the liquid crystal layer includes a liquid crystal molecule having positive dielectric anisotropy; the liquid crystal molecule is perpendicularly aligned relative to a surface of the first substrate when no voltage is applied; the first substrate includes a signal line, a scanning line, an insulating film, a first electrode to which an image signal is provided through the signal line, and a second electrode; the first electrode includes a first comb-tooth portion; the second electrode includes a second comb-tooth portion and a trunk portion connected to the second comb-tooth portion; the first comb-tooth portion and the second comb-tooth portion are planarly disposed to face each other in a pixel; the second substrate has a third electrode covering at least a display region; and the trunk portion is disposed in a manner overlapping the signal line and the scanning line at a position closer to the liquid crystal layer than the signal line and the scanning line with the insulating film sandwiched between the trunk portion and each of the lines. | 11-22-2012 |
20130208213 | LIQUID CRYSTAL DISPLAY PANEL AND LIQUID CRYSTAL DISPLAY DEVICE - The present invention provides a liquid crystal display panel that suppresses the temperature dependence of transmittance-gradation characteristics and thus overcomes problems in which significant changes in transmittance-gradation characteristics are caused by the effects of environmental temperature and a light source to lead to the degradation of display performance, and a liquid crystal display device including the liquid crystal display panel. The liquid crystal display panel of the present invention includes a liquid crystal medium containing a plurality of liquid crystal compounds each having a negative dielectric constant anisotropy, the liquid crystal medium being held between a first substrate and a second substrate that are located opposite each other, and a side of each of the substrates in contact with the liquid crystal medium having vertical alignment properties for the liquid crystal compounds. The liquid crystal medium in the liquid crystal display panel contains a liquid crystal composition (1) or a liquid crystal composition (2) having a specific composition. In the liquid crystal display panel, Δγ which pertains to a transmittance-gradation characteristic curve coefficient and which is calculated from specific expressions is 0.2 or less. | 08-15-2013 |
20130293817 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device ( | 11-07-2013 |
Patent application number | Description | Published |
20110267574 | LIQUID CRYSTAL DISPLAY DEVICE AND COMPOSITION FOR FORMING LIQUID CRYSTAL LAYER - The present invention provides a liquid crystal display device and a composition for forming a liquid crystal layer, which can sufficiently reduce image sticking without increasing the number of production processes. The present invention directs to a liquid crystal display device including a pair of substrates, and a liquid crystal layer sandwiched between the pair of substrates, wherein at least one of the pair of substrates has a photopolymer film formed by polymerizing a photopolymerizable monomer, on a surface on the liquid crystal layer side, and the photopolymer film contains a first monomer unit having a structure in which three benzene rings are condensed. | 11-03-2011 |
20120008079 | LIQUID CRYSTAL DISPLAY DEVICE, PROCESS FOR PRODUCING LIQUID CRYSTAL DISPLAY DEVICE, COMPOSITION FOR FORMING POLYMER LAYER, AND COMPOSITION FOR FORMING LIQUID CRYSTAL LAYER - The present invention provides a liquid crystal display device capable of reducing the probability of image sticking. The liquid crystal display device includes a pair of substrates and a liquid crystal layer between the substrates. At least one of the substrates includes an alignment film and a polymer layer on the alignment film. The polymer layer includes monomer units derived from at least two species of polymerizable monomers. The at least two species of polymerizable monomers include at least two species of monomers selected from the group consisting of: specific polyfunctional monomers and specific monofunctional monomers. | 01-12-2012 |
20120033158 | LIQUID CRYSTAL DISPLAY DEVICE - A VA-mode liquid crystal display device having a high display quality is provided. A liquid crystal display device according to the present invention includes a vertical alignment type liquid crystal layer; a first substrate and a second substrate facing each other with the liquid crystal layer interposed therebetween; a first electrode provided in the first substrate on the liquid crystal layer side and a second electrode provided in the second substrate on the liquid crystal layer side; and a first alignment film provided between the first electrode and the liquid crystal layer and a second alignment film provided between the second electrode and the liquid crystal layer. The liquid crystal display device includes a plurality of pixel areas located in a matrix. Each of the plurality of pixel areas includes a first liquid crystal domain in which a tilt direction of liquid crystal molecules at the center and in the vicinity thereof in a layer plane and in a thickness direction of the liquid crystal layer when a voltage is applied between the first electrode and the second electrode is a predetermined first direction, a second liquid crystal domain in which such a tilt direction is a predetermined second direction, a third liquid crystal domain in which such a tilt direction is predetermined third direction and a fourth liquid crystal domain in which such a tilt direction is a predetermined fourth direction; a difference between any two among the first direction, the second direction, the third direction and the fourth direction is approximately equal to an integral multiple of 90°. The first liquid crystal domain is close to at least a part of the edges of the first electrode, and the at least a part includes a first edge portion, wherein an azimuthal angle component of an alignment regulation force caused by an oblique electric field generated in the vicinity of the first edge portion and an azimuthal angle component of an alignment regulation force caused by the second alignment film are opposite to each other. The second substrate includes a first rib provided in an area corresponding to the first edge portion. | 02-09-2012 |
20120033167 | LIQUID CRYSTAL DISPLAY DEVICE, METHOD FOR MANUFACTURING LIQUID CRYSTAL DISPLAY DEVICE, COMPOSITION FOR FORMING POLYMER LAYER, AND COMPOSITION FOR FORMING LIQUID CRYSTAL LAYER - The present invention provides a liquid crystal display device capable of reducing the probability of image sticking. The liquid crystal display device comprises a pair of substrates, and a liquid crystal layer between the substrates, wherein at least one of the substrates comprises an alignment film and a polymer layer on the alignment film, and the polymer layer is formed by polymerization of a polymerizable monomer triggered by a polymerization initiator existing at a concentration of 1 mol % or lower relative to the polymerizable monomer. | 02-09-2012 |
20120099060 | LIQUID CRYSTAL DISPLAY ELEMENT AND LIQUID CRYSTAL DISPLAY DEVICE - A vertical alignment type liquid crystal display element ( | 04-26-2012 |
20120141694 | LIQUID CRYSTAL DISPLAY PANEL - A TBA-liquid crystal display panel including a liquid crystal medium with positive dielectric anisotropy, wherein the liquid crystal medium includes, in 100% by weight of the liquid crystal compounds identified by the compounds recited in formulas I through IX below: | 06-07-2012 |
20140111754 | LIQUID CRYSTAL DISPLAY DEVICE AND METHOD FOR MANUFACTURING LIQUID CRYSTAL DISPLAY DEVICE - The present invention provides a liquid crystal display device capable of reducing image sticking phenomena and of maintaining the voltage holding ratio, the liquid crystal display device being produced using photo-alignment technology and PSA technology in combination. The liquid crystal display device according to the present invention includes a pair of substrates, a liquid crystal layer disposed between the pair of substrates, an alignment film formed on at least one of the pair of substrates, and a polymer layer for controlling the alignment of liquid crystal molecules formed on the alignment film, wherein the polymer layer is formed by polymerization of one or more species of monomers added in the liquid crystal layer, the polymerization being initiated by radicals generated of the one or more species of monomers upon absorption of light, and the alignment film includes a polymer material having a main chain that contains an imide structure and a side chain that contains a photoreactive functional group, and has undergone a photo-alignment treatment. | 04-24-2014 |
20150042922 | LIQUID CRYSTAL DISPLAY PANEL AND LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display panel includes a metal electrode, a transparent electrode, an interlayer insulating film, and a comb-shaped electrode. Distorted horizontal electric fields are generated in order to distort the orientation of liquid crystal molecules. Accordingly, it is possible to achieve a transflective liquid crystal display device that has high transmittance, reflectance, and yield, and that can suppress display defects such as screen burn-in without using a panel gap adjusting structure, a driving method that respectively applies different electric fields to the reflective region and the transmissive region, or a multi-L/S structure. | 02-12-2015 |