Patents by Inventor Kazuo Kita
Kazuo Kita has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20160267869Abstract: A display device includes an image display area that includes pixels sectioned by scanning signal lines and video signal lines, first scanning connection lines connected to scanning signal lines, first thin film transistors, first selection signal lines, second thin film transistors, second selection signal lines, and a scanning signal drive circuit connected to the first scanning connection lines, the first selection signal lines, and the second selection signal lines, wherein the scanning signal drive circuit sequentially supplies a pulse signal to the first scanning connection lines in a selection period in which a gate-on voltage is applied to the one of the first selection signal lines, and the scanning signal drive circuit applies a gate-off voltage to the one of the second selection signal lines corresponding to the one of the first selection signal lines to which the gate-on voltage is applied.Type: ApplicationFiled: May 19, 2016Publication date: September 15, 2016Inventors: Genshiro KAWACHI, Kazuo KITA, Yoshihisa OOISHI, Hideyuki NAKANISHI, Toshikazu KOUDO
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Patent number: 9407267Abstract: A level conversion circuit includes level conversion portions which are connected in series. The level conversion portion includes circuit blocks. The circuit block inverts an input signal. The circuit block includes a transistor connected between a power supply and a node, a transistor connected between the node and a power supply, a transistor connected between a gate of the transistor and the power supply, and a capacitor connected between an output node and the gate of the transistor. The circuit block carried out level conversion in step with operation of the transistor in accordance with a signal applied from an input node to a gate thereof and operation of the transistor an ON/OFF state of which is switched by application of an output of the circuit block to a gate thereof, to thereby output potential change at the node.Type: GrantFiled: August 27, 2014Date of Patent: August 2, 2016Assignee: Panasonic Liquid Crystal Display Co., Ltd.Inventor: Kazuo Kita
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Patent number: 9105209Abstract: In a liquid crystal display device, a data signal generation unit generates a data signal for controlling the orientation of liquid crystal. A plurality of transistors supply the data signal output from a source IC unit to a plurality of data signal lines of a liquid crystal display panel in a time sharing manner. A gate signal line controls each of the plurality of transistors. A fluctuation suppression unit is connected to the gate signal line that controls any one of the plurality of transistors, and suppresses, in accordance with a gate signal of the connected gate signal line, a voltage fluctuation in the data signal which occurs when another transistor changes from the ON state to the OFF state.Type: GrantFiled: December 7, 2012Date of Patent: August 11, 2015Assignee: Panasonic Liquid Crystal Display Co., Ltd.Inventors: Kazuo Kita, Genshiro Kawachi
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Publication number: 20150221675Abstract: A method of manufacturing a display device includes: forming a gate electrode on a substrate; forming a gate insulating film on the substrate; forming an oxide semiconductor on the substrate; forming a source electrode and a drain electrode on the substrate; forming a passivation film on the substrate; forming a common electrode on the substrate; forming an interlayer insulating film on the substrate; forming a pixel electrode on the substrate; forming an alignment film on the substrate; radiating UV-rays onto the oxide semiconductor; and heat-treating the oxide semiconductor irradiated with the UV-rays. The radiating UV-rays is performed after the forming an oxide semiconductor, and the heat-treating is performed after the forming a passivation film.Type: ApplicationFiled: April 13, 2015Publication date: August 6, 2015Inventors: Hironori YASUKAWA, Genshiro KAWACHI, Tomoya KATO, Kazuo KITA
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Publication number: 20150116618Abstract: A first substrate of a display device includes a plurality of signal lines which are arranged in an image display area and a plurality of driving circuits which drive the plurality of signal lines, the driving circuit is electrically connected to a metal line which is formed in the first substrate in an area of the first substrate overlapping the driving circuit in planar view, the metal line is electrically connected via a contact hole, in the area, to a lead-out line which is formed in a layer different from that of the metal line in the first substrate, the lead-out line is extended to the outside of the area and electrically connected to the signal line.Type: ApplicationFiled: February 26, 2014Publication date: April 30, 2015Applicant: Panasonic Liquid Crystal Display Co., Ltd.Inventors: Kazuo KITA, Ryutaro OKE, Genshiro KAWACHI
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Publication number: 20150077393Abstract: An embedded touch screen, including: a first substrate including, on a front surface thereof, a plurality of detecting electrodes extending in a second direction; a second substrate having an image region in which a plurality of pixels are arranged in matrix, the second substrate including: a pixel electrode connected to corresponding one of the plurality of video signal lines via a switching element connected to corresponding one of the plurality of scanning signal lines in each of the plurality of pixels; and a common electrode; a liquid crystal layer sandwiched between the first substrate and the second substrate; an application circuit for applying an alternating signal to the pixel electrode; a detection circuit for detecting a signal excited on the corresponding one of the plurality of detecting electrodes; and a scanning circuit for scanning the pixel electrode in the second direction during detection by the detection circuit.Type: ApplicationFiled: November 19, 2014Publication date: March 19, 2015Inventors: Genshiro KAWACHI, Kazuo KITA, Kikuo ONO
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Publication number: 20150029081Abstract: Provided is a liquid crystal display device, including: a plurality of scanning connection lines formed on at least one side of edges of the image display region, the plurality of scanning connection lines connecting together a scanning signal drive circuit and a plurality of scanning signal lines; a selection circuit formed so as to be interposed between the plurality of scanning connection lines and the plurality of scanning signal lines, the selection circuit being configured to selectively short-circuit one of a plurality of the scanning signal lines to one of the plurality of scanning connection lines based on a selection signal; and a selection signal line connected to the selection circuit, the selection signal line transmitting the selection signal to the selection circuit.Type: ApplicationFiled: October 10, 2014Publication date: January 29, 2015Inventors: Genshiro KAWACHI, Kazuo KITA
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Patent number: 8941201Abstract: In a transparent substrate (10), there are formed a semiconductor layer (14) formed of an oxide semiconductor, the semiconductor layer (14) functioning as a channel portion of a TFT (2); an electrode (16) formed of a transparent conductive material and located over the semiconductor layer (14), and a light-shielding conductor (17) formed on the electrode (16), the light-shielding conductor being formed of a material which has a conductivity higher than that of the transparent conductive material and which has light-shielding property, the light-shielding conductor covering the semiconductor layer (14). This structure can inhibit exposure of the oxide semiconductor which forms the channel portion toward a light, and can lower the resistance of the electrode formed of the transparent conductive material.Type: GrantFiled: December 7, 2012Date of Patent: January 27, 2015Assignee: Panasonic Liquid Crystal Display Co., Ltd.Inventor: Kazuo Kita
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Publication number: 20150022500Abstract: To achieve improved detection accuracy and time and position resolutions in an in-cell type capacitive touch sensor embedded in a liquid crystal panel of a liquid crystal display device, a drive electrode of the touch sensor is formed in a boundary region for separating pixel electrodes formed on a surface of a TFT substrate on a liquid crystal side, and a detection electrode is formed in a region of an opposing substrate that opposes the boundary region. A drive signal is supplied to the drive electrode to cause a voltage change, and based on the voltage change in the detection electrode caused thereby, a capacitance change in an opposing part between the drive electrode and the detection electrode is detected, to thereby detect contact of an object to a display surface near the opposing part in a liquid crystal panel.Type: ApplicationFiled: October 9, 2014Publication date: January 22, 2015Inventors: Kazuo KITA, Genshiro KAWACHI
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Publication number: 20150022501Abstract: To achieve improved detection accuracy and position resolution in an in-cell type capacitive touch sensor embedded in a liquid crystal panel of a liquid crystal display device, a drive electrode of a touch sensor is formed of a transparent conductive film laminated on a surface of a TFT substrate on a liquid crystal side below a pixel electrode, and disposed in a region between gate lines. A detection electrode is formed of a transparent conductive film laminated on an outward-directed surface of the TFT substrate. A drive signal is supplied to the drive electrode to cause a voltage change, and based on the voltage change in the detection electrode caused thereby, a capacitance change in an opposing part between the drive electrode and the detection electrode is detected, to thereby detect contact of an object to a display surface near the opposing part in a liquid crystal panel.Type: ApplicationFiled: October 9, 2014Publication date: January 22, 2015Inventor: Kazuo KITA
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Publication number: 20140361966Abstract: A level conversion circuit includes level conversion portions which are connected in series. The level conversion portion includes circuit blocks. The circuit block inverts an input signal. The circuit block includes a transistor connected between a power supply and a node, a transistor connected between the node and a power supply, a transistor connected between a gate of the transistor and the power supply, and a capacitor connected between an output node and the gate of the transistor. The circuit block carried out level conversion in step with operation of the transistor in accordance with a signal applied from an input node to a gate thereof and operation of the transistor an ON/OFF state of which is switched by application of an output of the circuit block to a gate thereof, to thereby output potential change at the node.Type: ApplicationFiled: August 27, 2014Publication date: December 11, 2014Inventor: Kazuo KITA
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Publication number: 20050259964Abstract: There is disclosed an information reproduction apparatus (P) which reproduces music information recorded on a recording medium (DK) wherein the apparatus (P) has a CPU (14) which inhibits reproduction of music information recorded in compressed form based on a preset quality benchmark (e.g., a bit rate) for a sound quality of music information. The information reproduction apparatus (P) may further includes an operation section (15) used to set a quality range indicated by the quality benchmark, on a basis of which music information is inhibited from being reproduced. Using the apparatus, information recorded in a recording medium as a compressed file is reproduced without causing discomfort to a user.Type: ApplicationFiled: March 23, 2005Publication date: November 24, 2005Inventors: Masashi Takano, Yuichi Kimikawa, Taketo Fushimi, Teruo Takahashi, Kazuo Kita, Yuichi Yoshida
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Patent number: 5670464Abstract: An additive for lubricating oils for diesel engines, comprising one or more kinds of amino alcohols which have one or more amino groups and one or more hydroxyl groups in a molecule and possess a function of dispersing water-containing calcium sulfate in oil, the hydroxyl groups being bound to the carbon atoms at the .beta.-positions to the amino groups; and a lubricating oil composition for diesel engines, which comprises the additives in an amount of from 0.1 to 10% by weight.Type: GrantFiled: September 28, 1995Date of Patent: September 23, 1997Assignee: Kao CorporationInventors: Kazuo Kita, Takashi Ohtani, Jiro Hashimoto
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Patent number: 4915864Abstract: An aqueous solution composition of a strong alkali and a nonionic surface active agent comprising: (a) a strong alkali, (b) a nonionic surface active agent having an HLB value of 3-18, and, as a solubilizing agent, (c) a specific type of carboxylic acid is disclosed. The composition contains a strong alkali and a nonionic surface active agent having an HLB value usually of 3-18 at high concentrations and stably and is homogeneous and transparent. Thus, it is useful for a variety of applications requiring both alkalinity and detergency, for example, as wettability promoting agents of glass, fiber, metal, and earthenware surfaces as well as various toiletry products.Type: GrantFiled: June 13, 1988Date of Patent: April 10, 1990Assignee: Kao CorporationInventors: Kazuo Kita, Etsuko Morimi, Toshimasa Hamai
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Patent number: 4595519Abstract: A metal cleaning composition is provided comprising: a nonionic active agent and/or an anionic active agent having an HLB value ranging from 3 to 18; and a carboxylic acid or salt thereof represented by the formula,R--X--(CH.sub.2).sub.m --COOMin which X represents N--H, N(CH.sub.2).sub.n --COOM or CH--COOM, R represents a saturated or unsaturated aliphatic hydrocarbon group having from 4 to 18 carbon atoms, phenyl group or tolyl group, and M represents a cation; and a five-membered ring compound having either one nitrogen atom and one sulfur atom, or three nitrogen atoms, and/or a quinoline derivative having a hydroxyl group.The composition according to the invention is advantageous in washing steel or copper plates without inducing pitting corrosion on the metal surface being contacted therewith.Type: GrantFiled: July 20, 1984Date of Patent: June 17, 1986Assignees: Kao Corporation, Kawasaki Steel CorporationInventors: Tadayoshi Takeno, Koichi Ishii, Koichi Yamane, Kazuo Kita, Toshio Iwasaki, Koichi Hirase