Patent application number | Description | Published |
20140174608 | METHOD FOR MANUFACTURING HIGH STRENGTH GALVANIZED STEEL SHEET HAVING EXCELLENT STABILITY OF MECHANICAL PROPERTIES, FORMABILITY, AND COATING APPEARANCE - A method of manufacturing a high strength galvanized steel sheet has a first heating step including heating to 400° C. to 750° C. in an atmosphere containing O | 06-26-2014 |
20140220382 | HIGH STRENGTH GALVANIZED STEEL SHEET EXCELLENT IN TERMS OF COATING ADHESIVENESS AND METHOD FOR MANUFACTURING THE SAME - A high strength galvanized steel sheet excellent in coating adhesiveness is made from a base material that is a high strength steel sheet containing Si, Mn, and Cr. A method includes performing an oxidation treatment on steel containing Si, Mn, and Cr in an oxidation furnace under the condition that a selected exit temperature T, reduction annealing and a galvanizing treatment, or optionally, further an alloying treatment under conditions that heating is performed at a temperature of 460° C. or higher and 600° C. or lower for an alloying treatment time of 10 seconds or more and 60 seconds or less. | 08-07-2014 |
20140377584 | HIGH-STRENGTH HOT-DIPPED GALVANIZED STEEL SHEET HAVING EXCELLENT FORMABILITY AND IMPACT RESISTANCE, AND METHOD FOR PRODUCING SAME - A galvanized steel sheet has a composition containing, by mass %, C: 0.05% or more and 0.5% or less, Si: 0.01% or more and 2.5% or less, Mn: 0.5% or more and 3.5% or less, P: 0.003% or more and 0.100% or less, S: 0.02% or less, Al: 0.010% or more and 0.5% or less, B: 0.0002% or more and 0.005% or less, Ti: 0.05% or less, a relationship of Ti>4N being satisfied, and the balance comprising Fe and inevitable impurities, and a microstructure containing 60% or more and 95% or less of tempered martensite in terms of area ratio and 5% or more and 20% or less of retained austenite in terms of area ratio, or further containing 10% or less (including 0%) of ferrite in terms of area ratio and/or 10% or less (including 0%) of martensite in terms of area ratio, the tempered martensite having an average grain diameter of 5 μm or less. | 12-25-2014 |
20150017472 | GALVANIZED STEEL SHEET AND METHOD FOR MANUFACTURING THE SAME - There is provided a high-strength galvanized steel sheet including, on a mass percent basis, C: more than 0.060% and 0.13% or less, Si: 0.01% or more and 0.7% or less, Mn: 1.0% or more and 3.0% or less, P: 0.005% or more and 0.100% or less, S: 0.010% or less, sol.Al: 0.005% or more and 0.100% or less, N: 0.0100% or less, Nb: 0.005% or more and 0.10% or less, Ti: 0.03% or more and 0.15% or less, and the balance comprising Fe and incidental impurities, satisfying the relationship of (Nb/93+Ti*/48)/(C/12)>0.08 (wherein Ti*=Ti−(48/14)N−(48/32)S). The high-strength galvanized steel sheet has a structure including ferrite and martensite. The ferrite has an average grain diameter of 15 μm or less and an area percentage of 80% or more. The martensite has an area percentage of 1% or more and 15% or less. | 01-15-2015 |
Patent application number | Description | Published |
20080211981 | DISPLAY DEVICE - The present invention relates to a technique for preventing the occurrence of a contact defect or exfoliation caused by a Mo oxide layer that is produced on a surface of a conductive layer when a coating type insulating film is applied onto a conductive layer made of a Mo or Mo-alloy. A display device (e.g., a liquid crystal display device) of the present invention has a first substrate, wherein the first substrate includes a first conductive layer composed of a Mo or Mo-alloy layer, a coating type insulating film formed above the first conductive layer, and a second conductive layer composed of an Al or Al-alloy layer (or Ti or Ti-alloy layer) formed on the conductive layer and wherein the coating type insulating film is formed on the second conductive layer. | 09-04-2008 |
20090086148 | Display Device - An active matrix liquid crystal display device includes a plurality of gate signal lines and a plurality of drain signal lines formed on a substrate. The gate signal lines extend in parallel to one another, and the drain signal lines extend in parallel to one another, and a dummy line is formed between each of adjacent parallel extending drain signal lines. | 04-02-2009 |
20090244466 | Liquid Crystal Display Device - A liquid crystal display device which can decrease periodical stripe-shaped irregularities is provided. In an active-matrix-type liquid crystal display device, a width of a stripe-shaped irregularity generating region where distance between a pixel electrode and a counter electrode changes is set to 50 μm less. To be more specific, at the time of exposing a resist pattern on a TFT substrate, by scanning an exposure light plural times using a direct drawing exposure machine, a width of an overlapping region of exposure regions which is generated in scanning is set to 50 μm or less thus setting the width of the stripe-shaped irregularity generating region to 50 μm or less. | 10-01-2009 |
20090273751 | LIQUID CRYSTAL DISPLAY DEVICE AND DIELECTRIC FILM USABLE IN THE LIQUID CRYSTAL DISPALY DEVICE - The present invention provides a liquid crystal display device with high image visibility at low power consumption and produced at low cost by using an interlayer dielectric film, which has low dielectric constant, high heat-resistant property, high optical transmissivity, high film thickness and high flattening property produced at low cost. An organic siloxane dielectric film is used as an interlayer dielectric film of the liquid crystal display device. A ratio of nitrogen content to silicon content (Ni content/Si content) in the interlayer dielectric film is controlled to 0.04 or more in the element ratio. The limiting film thickness to suppress and limit the cracking caused by the thickening of the interlayer dielectric film is set to 1.5 μm or more. | 11-05-2009 |
20100227425 | Manufacturing method of liquid crystal display device - The present invention provides a liquid crystal display device having a large holding capacitance in the inside of a pixel. A liquid crystal display device includes a first substrate, a second substrate arranged to face the first substrate in an opposed manner, and liquid crystal sandwiched between the first substrate and the second substrate. The first substrate includes a video signal line, a pixel electrode, a thin film transistor having a first electrode thereof connected to the video signal line and a second electrode thereof connected to the pixel electrode, a first silicon nitride film formed above the second electrode, an organic insulation film formed above the first silicon nitride film, a capacitance electrode formed above the organic insulation film, and a second silicon nitride film formed above the capacitance electrode and below the pixel electrode. The second silicon nitride film is a film which is formed at a temperature lower than a forming temperature of the first silicon nitride film. The first silicon nitride film and the second silicon nitride film form a contact hole therein by etching both of the first silicon nitride film and the second silicon nitride film collectively by dry etching. The second electrode and the pixel electrode are connected to each other via the contact hole. A potential different from a potential applied to the pixel electrode is applied to the capacitance electrode, and a holding capacitance is formed by the pixel electrode, the second silicon nitride film and the capacitance electrode. | 09-09-2010 |
20110115999 | LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF - Disclosed is a manufacturing method of a liquid crystal display device which is a manufacturing method of a liquid crystal display device including a liquid crystal alignment film to which an alignment regulating force is imparted by a photo-alignment treatment, including: a film forming step of forming a film containing a polymer whose main chain is cleaved by irradiation with light; a photo-alignment step of imparting an alignment regulating force to the film formed in the film forming step by irradiation of the film with light in an atmosphere of a temperature lower than 100° C.; and a removing step of removing a low-molecular weight component generated by cleaving the main chain of the polymer through the light irradiation after the light irradiation. Also disclosed is a liquid crystal display device manufactured by the manufacturing method. | 05-19-2011 |
20110176081 | LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD FOR SAME - The present invention provides a liquid crystal display device having gate wires and source/drain wires with a multilayer structure made of the same material which can be manufactured at low cost, as well as a manufacturing method for the same. In accordance with the manufacturing method, a wet etching process is carried out on the gate wires and the source/drain wires using an etchant including hydrofluoric acid and an oxidant, and the concentration of hydrofluoric acid in the etchant is different between the etchant for the gate wires and that for the source/drain wires. | 07-21-2011 |
20110227083 | Manufacturing method of liquid crystal display device - The present invention provides a liquid crystal display device having a large holding capacitance in the inside of a pixel. A liquid crystal display device includes a first substrate, a second substrate arranged to face the first substrate in an opposed manner, and liquid crystal sandwiched between the first substrate and the second substrate. The first substrate includes a video signal line, a pixel electrode, a thin film transistor having a first electrode thereof connected to the video signal line and a second electrode thereof connected to the pixel electrode, a first silicon nitride film formed above the second electrode, an organic insulation film formed above the first silicon nitride film, a capacitance electrode formed above the organic insulation film, and a second silicon nitride film formed above the capacitance electrode and below the pixel electrode. The second silicon nitride film is a film which is formed at a temperature lower than a forming temperature of the first silicon nitride film. The first silicon nitride film and the second silicon nitride film form a contact hole therein by etching both of the first silicon nitride film and the second silicon nitride film collectively by dry etching. The second electrode and the pixel electrode are connected to each other via the contact hole. A potential different from a potential applied to the pixel electrode is applied to the capacitance electrode, and a holding capacitance is formed by the pixel electrode, the second silicon nitride film and the capacitance electrode. | 09-22-2011 |
20120082941 | MANUFACTURING METHOD OF DISPLAY DEVICE - An organic passivation film having a high transmittance and capable of setting a taper angle of a through hole within a predetermined range in a liquid crystal display device. A pixel electrode and a source electrode of a TFT are connected by way of a through hole formed in an organic passivation film. The organic passivation film having high productivity, high transmittance, and a predetermined taper angle θ of a through hole can be formed by using a chemical amplification photosensitive resin composition comprising, as a base material, an acrylic resin having a molecular weight of 4,000 to 20,000 and containing 1 to 6 wt % of a photoacid generator as the material for the organic passivation film, performing exposure and development for forming a through hole, and then performing post exposure, prebaking, and baking under appropriate conditions. | 04-05-2012 |
20120087003 | ELECTROPHORETIC DISPLAY DEVICE - A pixel is formed by sealing an insulating liquid and floating particles in an area defined by a first substrate, a second substrate and partitions. The width of the partition has to be reduced in order to improve the pixel brightness by enlarging a flat electrode. In this case, the height of the partition has to be reduced for retaining the mechanical strength. If the height of the partition is reduced, an area of the partition electrode becomes small, thus failing to retain the memory effect. The planar surface of the partition is then formed into a zigzag shape so as to increase the area of the partition electrode. | 04-12-2012 |
20120224114 | Liquid Crystal Display Device and Manufacturing Method Thereof - The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film. | 09-06-2012 |
20120299028 | MANUFACTURING METHOD FOR LIQUID CRYSTAL DISPLAY DEVICE - A LCD device having a large pixel holding capacitance includes opposedly facing first and second substrates, and liquid crystal between them. The first substrate includes a video signal line, a pixel electrode, a thin film transistor having a first electrode connected to the video signal line and a second electrode connected to the pixel electrode, a first silicon nitride film formed above the second electrode, an organic insulation film above the first silicon nitride film, a capacitance electrode above the organic insulation film, and a second silicon nitride film above the capacitance electrode and below the pixel electrode. A contact hole etched in both the first and second silicon nitride films connects the second electrode and the pixel electrode to each other. A holding capacitance is formed by the pixel electrode, the second silicon nitride film and the capacitance electrode. | 11-29-2012 |
20120314177 | Liquid Crystal Display Device - A liquid crystal display device includes a TFT substrate having an organic passivation film, and a counter substrate, with liquid crystals inside of the liquid crystal display device. A columnar spacer is formed on the counter substrate, which defines a distance between the TFT substrate and the counter substrate, and a concavo-convex pedestal is formed in a pixel region of the TFT substrate, the concavo-convex pedestal being provided in facing relation to the columnar spacer. The concavo-convex pedestal is formed with a convex portion and a concave portion at a bottom of the concavo-convex pedestal, with a top end of the columnar spacer being in contact with two or more convex portions formed on the bottom of the concavo-convex pedestal, and an area at the bottom of the concavo-convex pedestal being larger than the area at the top end of the columnar spacer. | 12-13-2012 |
20130057820 | LIQUID CRYSTAL DISPLAY DEVICE - In a liquid crystal display device using a cylindrical spacer to define the gap between a TFT substrate and a counter substrate, the TFT substrate does not include an organic passivation film, in which the cylindrical spacer is formed on an inorganic passivation film. An overcoat film is formed to cover a black matrix and color filters in the counter substrate. A concavo-convex mount is formed in the overcoat film. The top of the cylindrical spacer is brought into contact with the concavo-convex mount. The oriented film is not attached to the top of the cylindrical spacer and the convex portion of the concavo-convex mount. Thus, even if horizontal displacement occurs in the TFT substrate or the counter substrate, it is possible to prevent the occurrence of bright spots due to the scraping of the oriented film caused by the friction between the TFT substrate and the counter substrate. | 03-07-2013 |
20130308072 | MANUFACTURING METHOD FOR LIQUID CRYSTAL DISPLAY DEVICE - A LCD device having a large pixel holding capacitance includes opposedly facing first and second substrates, and liquid crystal between them. The first substrate includes a video signal line, a pixel electrode, a thin film transistor having a first electrode connected to the video signal line and a second electrode connected to the pixel electrode, a first silicon nitride film formed above the second electrode, an organic insulation film above the first silicon nitride film, a capacitance electrode above the organic insulation film, and a second silicon nitride film above the capacitance electrode and below the pixel electrode. A contact hole etched in both the first and second silicon nitride films connects the second electrode and the pixel electrode to each other. A holding capacitance is formed by the pixel electrode, the second silicon nitride film and the capacitance electrode. | 11-21-2013 |
20140132902 | MANUFACTURING METHOD FOR LIQUID CRYSTAL DISPLAY DEVICE - A LCD device having a large pixel holding capacitance includes opposedly facing first and second substrates, and liquid crystal between them. The first substrate includes a video signal line, a pixel electrode, a thin film transistor having a first electrode connected to the video signal line and a second electrode connected to the pixel electrode, a first silicon nitride film formed above the second electrode, an organic insulation film above the first silicon nitride film, a capacitance electrode above the organic insulation film, and a second silicon nitride film above the capacitance electrode and below the pixel electrode. A contact hole etched in both the first and second silicon nitride films connects the second electrode and the pixel electrode to each other. A holding capacitance is formed by the pixel electrode, the second silicon nitride film and the capacitance electrode. | 05-15-2014 |
20140184990 | LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD FOR SAME - The present invention provides a liquid crystal display device having gate wires and source/drain wires with a multilayer structure made of the same material which can be manufactured at low cost, as well as a manufacturing method for the same. In accordance with the manufacturing method, a wet etching process is carried out on the gate wires and the source/drain wires using an etchant including hydrofluoric acid and an oxidant, and the concentration of hydrofluoric acid in the etchant is different between the etchant for the gate wires and that for the source/drain wires. | 07-03-2014 |
20140220848 | LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF - Disclosed is a manufacturing method of a liquid crystal display device which is a manufacturing method of a liquid crystal display device including a liquid crystal alignment film to which an alignment regulating force is imparted by a photo-alignment treatment, including: a film forming step of forming a film containing a polymer whose main chain is cleaved by irradiation with light; a photo-alignment step of imparting an alignment regulating force to the film formed in the film forming step by irradiation of the film with light in an atmosphere of a temperature lower than 100° C.; and a removing step of removing a low-molecular weight component generated by cleaving the main chain of the polymer through the light irradiation after the light irradiation. Also disclosed is a liquid crystal display device manufactured by the manufacturing method. | 08-07-2014 |
20140247416 | DISPLAY DEVICE COMPRISING A RECESSED PORTION THAT IS FORMED WITH AT LEAST ONE CONVEX PORTION AT A BOTTOM OF THE RECESSED PORTION AND WHEREIN THE RECESSED PORTION FACES A COLUMNAR SPACER - A display device includes a first substrate having organic and alignment films, a second substrate adhered to the first substrate by a sealant which surrounds a pixel region, a columnar spacer formed on the second substrate defining a distance between the first substrate and the second substrate, and a recessed portion formed in the organic film of the pixel region, the recessed portion facing to the columnar spacer. The recessed portion has a convex portion at a bottom of the recessed portion, and a height of a top of the convex portion from the first substrate is lower than a height of an upper surface of the organic film from the first substrate. A thickness of an alignment film on the convex portion is smaller than a thickness of the bottom of the recessed portion, and a top of the columnar spacer is in contact with the convex portion. | 09-04-2014 |
20150055071 | Liquid Crystal Display Device - A display device includes a first substrate, a second substrate and liquid crystals therebetween, the first substrate having a flat portion, an alignment film, and a concavo-convex pedestal formed in a pixel region, wherein the concavo-convex pedestal having at least two convex portions and recessed portions, and the at least two convex portions of the concavo-convex pedestal are at a position lower than a position of the flat portion. A thickness of the alignment film on the convex portions is less than a thickness of the alignment film on the recessed portions, and a second substrate has a columnar spacer which contacts the at least two convex portions of the concavo-convex pedestal. | 02-26-2015 |