Patents by Inventor Tsunenori Yamamoto
Tsunenori Yamamoto 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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Patent number: 8984943Abstract: The present invention provides an inspection method for a lithium ion secondary battery in which an electrolyte and an electrode group are disposed in one container, the electrode group including a positive electrode, a negative electrode, and a separator, wherein a sensor for detecting acoustic emission is attached to the outside of the container and acoustic emission generated in the battery container is detected upon provision of charge or discharge current and stopping of provision thereof between the positive electrode and the negative electrode. Specifically, the amplitude intensity of the acoustic emission is measured that is generated upon provision of charge-discharge currents having different values, linear approximation is conducted for the charge-discharge current value and the amplitude intensity of the acoustic emission, and the number of times of charge-discharge cycles that has been provided so far to the battery is estimated.Type: GrantFiled: June 5, 2012Date of Patent: March 24, 2015Assignee: Hitachi, Ltd.Inventor: Tsunenori Yamamoto
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Publication number: 20150056478Abstract: Provided is a secondary battery system adapted to immediately detect that a lithium-ion secondary battery has entered a region in which the battery deteriorates in accordance with the t-law. The lithium-ion secondary battery system includes: a lithium-ion secondary battery; an acoustic emission (AE) sensor that detects an AE signal occurred in the lithium-ion secondary battery; an AE signal detector that detects the AE signal sent from the AE sensor; and a controller to which a signal from the AE signal detector is input. When a count of AE events which occur in a low-voltage region of one charge/discharge cycle of the lithium-ion secondary battery equals or exceeds a threshold value, the controller outputs a signal denoting a start of the deterioration of the lithium-ion secondary battery.Type: ApplicationFiled: January 23, 2013Publication date: February 26, 2015Applicant: Hitachi, Ltd.Inventor: Tsunenori Yamamoto
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Patent number: 8964155Abstract: A liquid crystal display includes first and second substrates with a liquid crystal layer therebetween, and a plurality of pixel regions defined by drain and gate signal lines of the substrate. The pixel region has a common electrode formed of a transparent conducting layer having a plurality of slits, a pixel electrode formed of a transparent conducting layer and having plane shape, and a first insulating layer interposed between the common electrode and the pixel electrode. The common electrode is arranged between the pixel electrode and the liquid crystal layer, and the pixel electrode is overlapped with a plurality of slits of the common electrode. A thin film transistor is connected to the drain signal line, and the pixel electrode is connected to a source electrode of the thin film transistor. The common electrode overlaps with a connection portion of the pixel and source electrodes on the first insulating layer.Type: GrantFiled: October 17, 2013Date of Patent: February 24, 2015Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
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Publication number: 20150035738Abstract: In a color display device, when using white (W) sub-pixels in addition to subpixels of red (R) and green (G) plus blue (B) without increasing a wiring line number, the per-color pixel number in a unit area decreases so that the image resolution is deteriorated. The area and number of subpixels are adjusted in accordance with the visual sensitivity or luminosity required. Practically, the area of red (R) and blue (B) subpixels which are relatively low in luminosity is set to be about two times greater than the area of green (G) and white (W) subpixels that are relatively high in luminosity while letting the number of green (G) and white (W) subpixels be twice the number of red (R) and blue (B) subpixels. A larger subpixel is configured from a plurality of unit subpixels. A smaller subpixel is formed of a one unit subpixel.Type: ApplicationFiled: October 20, 2014Publication date: February 5, 2015Inventors: Shoichi HIROTA, Shinichi KOMURA, Yoshifumi SEKIGUCHI, Tsunenori YAMAMOTO, Masaya ADACHI
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Patent number: 8891044Abstract: In a color display device, when using white (W) sub-pixels in addition to subpixels of red (R) and green (G) plus blue (B) without increasing a wiring line number, the per-color pixel number in a unit area decreases so that the image resolution is deteriorated. The area and number of subpixels are adjusted in accordance with the visual sensitivity or luminosity required. Practically, the area of red (R) and blue (B) subpixels which are relatively low in luminosity is set to be about two times greater than the area of green (G) and white (W) subpixels that are relatively high in luminosity while letting the number of green (G) and white (W) subpixels be twice the number of red (R) and blue (B) subpixels. A larger subpixel is configured from a plurality of unit subpixels. A smaller subpixel is formed of a one unit subpixel.Type: GrantFiled: October 10, 2007Date of Patent: November 18, 2014Assignees: Japan Display Inc., Panasonic Liquid Display Co., Ltd.Inventors: Shoichi Hirota, Shinichi Komura, Yoshifumi Sekiguchi, Tsunenori Yamamoto, Masaya Adachi
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Publication number: 20140300851Abstract: A liquid crystal display includes a first substrate and a second substrate opposed to each other with a liquid crystal layer between the first substrate and the second substrate. The first substrate has a plurality of drain signal lines and a plurality of gate signal lines, and a plurality of pixel regions are defined by the drain signal lines and the gate signal lines. Each of the pixel regions includes a first electrode having a plurality of strip-like portions extending in an extension direction of the drain signal lines, the strip-like portions having at least one bent portion so that extension directions of each two parts of the strip-like portions separated by the at least one bent portion are different from each other, and a second electrode formed between the first substrate and the first electrode, and being overlapped with the strip-like portions in plan view.Type: ApplicationFiled: June 20, 2014Publication date: October 9, 2014Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori ` Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
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Patent number: 8742728Abstract: A rechargeable battery system that controls charge/discharge of a lithium ion rechargeable battery, includes: an internal resistance detection unit that detects or estimates an internal resistance value indicating an internal resistance at the lithium ion rechargeable battery; and a discharge control unit that executes control so as to set a discharge suspension period while the lithium ion rechargeable battery is discharged if the internal resistance value detected via the internal resistance detection unit during discharge of the lithium ion rechargeable battery exceeds a first threshold value.Type: GrantFiled: September 8, 2011Date of Patent: June 3, 2014Assignee: Hitachi, Ltd.Inventors: Hironori Sasaki, Tsunenori Yamamoto, Takefumi Okumura
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Publication number: 20140043556Abstract: A liquid crystal display includes first and second substrates with a liquid crystal layer therebetween, and a plurality of pixel regions defined by drain and gate signal lines of the substrate. The pixel region has a common electrode formed of a transparent conducting layer having a plurality of slits, a pixel electrode formed of a transparent conducting layer and having plane shape, and a first insulating layer interposed between the common electrode and the pixel electrode. The common electrode is arranged between the pixel electrode and the liquid crystal layer, and the pixel electrode is overlapped with a plurality of slits of the common electrode. A thin film transistor is connected to the drain signal line, and the pixel electrode is connected to a source electrode of the thin film transistor. The common electrode overlaps with a connection portion of the pixel and source electrodes on the first insulating layer.Type: ApplicationFiled: October 17, 2013Publication date: February 13, 2014Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
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Patent number: 8648989Abstract: A liquid crystal display includes a first substrate, a second substrate, a liquid crystal disposed between the first substrate having drain lines and gate signal lines defining pixel regions and the second substrate. The pixel regions include a pixel electrode formed of a transparent conducting layer and having a plurality of slits, a common electrode formed of a transparent conducting layer, the common electrode being overlapped with the pixel electrode through an insulating layer, and the liquid crystal being driven by an electric field generated by the pixel electrode and the common electrode. A conductor layer is arranged proximate to the drain signal line. The conductor layer is placed at a position where at least a part thereof overlaps the common electrode, and the conductor layer is not connected to the drain signal line and the pixel electrode electrically.Type: GrantFiled: March 14, 2013Date of Patent: February 11, 2014Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
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Patent number: 8581555Abstract: Provided is a secondary battery system including: a battery controller which controls charge and discharge of a secondary battery; a total controller which controls the entire system; an ammeter which detects a charge current and a discharge current of the secondary battery; and a voltmeter which detects a voltage of the secondary battery, in which a direct current resistance of the secondary battery at the time of charge and a direct current resistance of the secondary battery at the time of discharge are obtained on the basis of a current value and a voltage value detected by the ammeter and the voltmeter, to thereby determine a temporary increase in the direct current resistance of the secondary battery caused by charge and discharge with a large current on the basis of a relation between the two obtained direct current resistances.Type: GrantFiled: January 28, 2011Date of Patent: November 12, 2013Assignee: Hitachi, Ltd.Inventors: Tsunenori Yamamoto, Takefumi Okumura, Hironori Sasaki
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Patent number: 8564752Abstract: A liquid crystal display includes a first substrate, a second substrate, and a liquid crystal disposed between the first substrate having first signal lines and second signal lines defining pixel regions and the second substrate. The pixel regions include a first transparent electrode, and a second transparent electrode which is overlapped with the first electrode through an insulating layer. The second transparent electrode is elongated so as to extend to plural pixel regions in overlapping relation with the first signal line which extends in plural pixel regions, and at least one strip-shaped opening portion is delimited between adjacent second transparent electrodes arranged in an extension direction of the first signal line, the at least one strip-shaped opening portion being formed in overlapping relation with the second signal line. A metal line is connected to the second transparent electrode, the metal line being elongated to extend to plural pixel regions.Type: GrantFiled: March 14, 2013Date of Patent: October 22, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Co., Ltd.Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
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Patent number: 8552930Abstract: A liquid crystal display apparatus is able to display high quality motion pictures with less after-image when displaying motion pictures and with less fuzzy images without making the response speed of the liquid crystal too fast. The display data emphasized excessively more than a changed value is written into the pixel having any change detected by comparison with the previous display data and its value is made to change excessively more than the value corresponding to its original display data, and then, according to the optical response of the liquid crystal, the lighting time and the lighting period of the light source are controlled for the individual areas of the illumination unit having plural areas.Type: GrantFiled: December 16, 2003Date of Patent: October 8, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Tsunenori Yamamoto, Sukekazu Aratani, Makoto Yoneya
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Publication number: 20130249498Abstract: A non-aqueous secondary battery, such as a lithium ion secondary battery, eliminates local potential distribution in a cell due to the side reaction during charge/discharge, and does not undergo deterioration of capacitance, deterioration of a positive electrode material, and deposition of metallic lithium. The non-aqueous secondary battery has an electrode group and an electrolyte disposed in one container. The electrode group includes a positive electrode, a negative electrode, and a separator, and is divided into a plurality of electrode groups separated electrically. The electrode groups are in contact with an identical electrolyte, and terminals are led out from the positive electrode and the negative electrode to the outside of the container on every electrode group. Terminals are connected on every positive electrode and negative electrode at the outside of the container, and the terminals at the outside of the container are connectable and disconnectable easily.Type: ApplicationFiled: December 8, 2010Publication date: September 26, 2013Applicant: Hitachi, Ltd.Inventors: Tsunenori Yamamoto, Keisuke Fujito
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Publication number: 20130208203Abstract: A liquid crystal display includes a first substrate, a second substrate, and a liquid crystal disposed between the first substrate having first signal lines and second signal lines defining pixel regions and the second substrate. The pixel regions include a first transparent electrode, and a second transparent electrode which is overlapped with the first electrode through an insulating layer. The second transparent electrode is elongated so as to extend to plural pixel regions in overlapping relation with the first signal line which extends in plural pixel regions, and at least one strip-shaped opening portion is delimited between adjacent second transparent electrodes arranged in an extension direction of the first signal line, the at least one strip-shaped opening portion being formed in overlapping relation with the second signal line. A metal line is connected to the second transparent electrode, the metal line being elongated to extend to plural pixel regions.Type: ApplicationFiled: March 14, 2013Publication date: August 15, 2013Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
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Publication number: 20130201419Abstract: A liquid crystal display includes a first substrate, a second substrate, a liquid crystal disposed between the first substrate having drain lines and gate signal lines defining pixel regions and the second substrate. The pixel regions include a pixel electrode formed of a transparent conducting layer and having a plurality of slits, a common electrode formed of a transparent conducting layer, the common electrode being overlapped with the pixel electrode through an insulating layer, and the liquid crystal being driven by an electric field generated by the pixel electrode and the common electrode. A conductor layer is arranged proximate to the drain signal line. The conductor layer is placed at a position where at least a part thereof overlaps the common electrode, and the conductor layer is not connected to the drain signal line and the pixel electrode electrically.Type: ApplicationFiled: March 14, 2013Publication date: August 8, 2013Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
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Patent number: 8493537Abstract: A liquid crystal display includes a first substrate and a second substrate opposed to each other with a liquid crystal layer therebetween, the first substrate having a plurality of drain signal lines and a plurality of gate signal lines, and a plurality of pixel regions defined by the drain signal lines and the gate signal lines. The pixel regions include a first electrode formed of a transparent conducting layer, the first electrode being overlapped with the drain signal line and formed on a plurality of the pixel regions, a second electrode formed of a transparent conducting layer, the second electrode being overlapped with the first electrode, a first insulating layer formed between the first electrode and the second electrode, and a second insulating layer formed between the drain signal line and the first electrode.Type: GrantFiled: July 6, 2012Date of Patent: July 23, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Kikuo Ono, Makuto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
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Patent number: 8421957Abstract: A liquid crystal display device includes a liquid crystal panel and an illuminating device having a plurality of LED packages which include LED's and a lens. Each LED package includes a high refractive index member containing a substance having a larger refractive index than that of a material forming the lens and which seals the LED. The lens is shaped to have a recess near its center, and is shaped so that a moving radius increases as a polar angle increases within a range of 0 to 80 degrees. The moving radius is defined as a distance starting from the lens center and ending in the lens surface, and the polar angle is defined as an angle that is made by the moving radius to the center axis that is vertical to a plane on which said LED package is located and passing through the center of the lens.Type: GrantFiled: July 13, 2011Date of Patent: April 16, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yoshifumi Sekiguchi, Ikuo Hiyama, Tsunenori Yamamoto, Hiroki Kaneko, Toshiaki Tanaka
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Publication number: 20130002194Abstract: Since in existent charge-discharge control the battery direct current resistance of a lithium ion battery increases at a low temperature or in a low SOC, the battery voltage may possibly exceed greatly the maximum allowable voltage instantaneously due to over-voltage during charging or may possibly decrease greatly to less than the minimum allowable voltage during discharging. If the lithium ion battery continuously lies in such a state the battery performance is degraded abruptly. The battery resistance of a lithium ion battery module is estimated in accordance with SOC and temperature of the lithium ion battery module, and current to charge is set properly based on the estimated battery resistance.Type: ApplicationFiled: June 28, 2012Publication date: January 3, 2013Applicant: Hitachi, Ltd.Inventors: Hironori SASAKI, Tsunenori YAMAMOTO
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Patent number: 8345205Abstract: A liquid crystal display includes a first substrate and a second substrate with a liquid crystal layer therebetween, the first substrate having a plurality of drain signal lines and a plurality of gate signal lines, and a plurality of pixel regions defined by the drain signal lines and the gate signal lines. The pixel regions include a first electrode having a plurality of linear shapes, a second electrode having a planer shape, the second electrode being overlapped with the first electrode through an insulation film, and a thin film transistor having a video signal supplied thereto from the drain signal line. The first electrode is connected with the thin film transistor so that an electric potential of the video signal is supplied thereto, and a standard electric potential is supplied to the second electrode. A third electrode is arranged between the drain signal line and the liquid crystal layer.Type: GrantFiled: July 6, 2012Date of Patent: January 1, 2013Assignees: Hitachi Displays, Ltd., Panasonic Liquid Display Co., Ltd.Inventors: Kikuo Ono, Makoto Yoneya, Tsunenori Yamamoto, Junichi Hirakata, Yoshiaki Nakayoshi
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Publication number: 20120304771Abstract: The present invention provides an inspection method for a lithium ion secondary battery in which an electrolyte and an electrode group are disposed in one container, the electrode group including a positive electrode, a negative electrode, and a separator, wherein a sensor for detecting acoustic emission is attached to the outside of the container and acoustic emission generated in the battery container is detected upon provision of charge or discharge current and stopping of provision thereof between the positive electrode and the negative electrode. Specifically, the amplitude intensity of the acoustic emission is measured that is generated upon provision of charge-discharge currents having different values, linear approximation is conducted for the charge-discharge current value and the amplitude intensity of the acoustic emission, and the number of times of charge-discharge cycles that has been provided so far to the battery is estimated.Type: ApplicationFiled: June 5, 2012Publication date: December 6, 2012Applicant: Hitachi, Ltd.Inventor: Tsunenori YAMAMOTO