Patents by Inventor Tsuyoshi Ohshima
Tsuyoshi Ohshima 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: 9386258Abstract: Provided are a mounting member which may be fixed to a substrate with a simple structure without using a solder, and easily mount the substrate to another member having a simple structure, while maintaining stable fixation to the substrate, a display device including the mounting member, and a television receiver including the display device. The mounting member includes a first abutting plate part formed in a square flat shape, a side abutting plate part connected to the first abutting plate part at a right angle, and a second abutting plate part connected to the side abutting plate part at a right angle. The mounting member is mounted so as to pinch a portion of an edge part of the substrate. The other member abuts the first abutting plate part, and a screw is inserted into a screw insertion hole of the other member, the screw insertion hole of the first abutting plate part, and the screw insertion hole of the substrate, and screwed to a female thread such that the substrate is mounted to the other member.Type: GrantFiled: August 16, 2013Date of Patent: July 5, 2016Assignee: SHARP KABUSHIKI KAISHAInventors: Kentaroh Ohki, Tsuyoshi Ohshima
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Publication number: 20150237291Abstract: Provided are a mounting member which may be fixed to a substrate with a simple structure without using a solder, and easily mount the substrate to another member having a simple structure, while maintaining stable fixation to the substrate, a display device including the mounting member, and a television receiver including the display device. The mounting member includes a first abutting plate part formed in a square flat shape, a side abutting plate part connected to the first abutting plate part at a right angle, and a second abutting plate part connected to the side abutting plate part at a right angle. The mounting member is mounted so as to pinch a portion of an edge part of the substrate. The other member abuts the first abutting plate part, and a screw is inserted into a screw insertion hole of the other member, the screw insertion hole of the first abutting plate part, and the screw insertion hole of the substrate, and screwed to a female thread such that the substrate is mounted to the other member.Type: ApplicationFiled: August 16, 2013Publication date: August 20, 2015Applicant: SHARP KABUSHIKI KAISHAInventors: Kentaroh Ohki, Tsuyoshi Ohshima
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Patent number: 8732924Abstract: A method of manufacturing a piezoelectric vibrator comprises supporting a piezoelectric vibration element in a case by a conductive bonding member, the piezoelectric vibration element having a metal layer formed on a piezoelectric substrate formed of a thickness shear based piezoelectric material, and adding or reducing a thickness of the metal layer to adjust a resonant frequency of the piezoelectric vibration element to a predetermined value. The method also comprises leaving the case into an atmosphere filled with vapor of a material having a nonbonding electron pair, making the metal layer resultantly exposed to the vapor subject to chemical absorption with the material having the nonbonding electron pair, and hermetically encapsulating the case in a state substituted by an inert gas atmosphere.Type: GrantFiled: September 12, 2012Date of Patent: May 27, 2014Assignee: Seiko Epson CorporationInventors: Tsuyoshi Ohshima, Shin Hasegawa, Noriyuki Watanabe
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Publication number: 20130014361Abstract: A piezoelectric vibration element is provided which includes a piezoelectric substrate formed of a thickness slip based piezoelectric material and a metal layer formed on a surface of the piezoelectric substrate. In the piezoelectric vibration element, a surface of the metal layer is covered by a layer formed by chemical absorption with a material having a nonbonding electron pair.Type: ApplicationFiled: September 12, 2012Publication date: January 17, 2013Applicant: SEIKO EPSON CORPORATIONInventors: Tsuyoshi OHSHIMA, Shin HASEGAWA, Noriyuki WATANABE
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Patent number: 8281467Abstract: A piezoelectric vibration element that includes a piezoelectric substrate formed of a thickness shear based piezoelectric material and a metal layer formed on a surface of the piezoelectric substrate. In the piezoelectric vibration element, a surface of the metal layer is covered by a layer formed by chemical absorption with a material having a nonbonding electron pair.Type: GrantFiled: June 10, 2008Date of Patent: October 9, 2012Assignee: Seiko Epson CorporationInventors: Tsuyoshi Ohshima, Shin Hasegawa, Noriyuki Watanabe
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Patent number: 8166621Abstract: A method of stabilizing a frequency of a piezoelectric vibration element includes: disposing the piezoelectric vibration element in an atmosphere of a vapor of a ring-shaped dimethylpolysiloxane molecule, the piezoelectric vibration element having a metal layer on a surface of a piezoelectric substrate formed of a thickness slip based piezoelectric material; and making the ring-shaped dimethylpolysiloxane molecule subject to chemical absorption with a surface of the metal layer to form a layer of the ring-shaped dimethylpolysiloxane molecule.Type: GrantFiled: June 10, 2008Date of Patent: May 1, 2012Assignee: Seiko Epson CorporationInventors: Tsuyoshi Ohshima, Shin Hasegawa, Noriyuki Watanabe
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Publication number: 20080289162Abstract: A piezoelectric vibration element is provided which includes a piezoelectric substrate formed of a thickness slip based piezoelectric material and a metal layer formed on a surface of the piezoelectric substrate. In the piezoelectric vibration element, a surface of the metal layer is covered by a layer formed by chemical absorption with a material having a nonbonding electron pair.Type: ApplicationFiled: June 10, 2008Publication date: November 27, 2008Applicant: EPSON TOYOCOM CORPORATIONInventors: Tsuyoshi Ohshima, Shin Hasegawa, Norlyuki Watanabe
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Publication number: 20080284280Abstract: A piezoelectric vibration element is provided which includes a piezoelectric substrate formed of a thickness slip based piezoelectric material and a metal layer formed on a surface of the piezoelectric substrate. In the piezoelectric vibration element, a surface of the metal layer is covered by a layer formed by chemical absorption with a material having a nonbonding electron pair.Type: ApplicationFiled: June 10, 2008Publication date: November 20, 2008Applicant: EPSON TOYOCOM CORPORATIONInventors: Tsuyoshi Ohshima, Shin Hasegawa, Noriyuki Watanabe
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Patent number: 7439819Abstract: Deterioration in frequency stability with time in a conventional piezoelectric oscillator using an accumulation type MOS capacitance element is improved. A P-channel transistor type or an N-channel transistor type is used as a MOS capacitance element in a variable capacitance circuit used in a piezoelectric oscillator. A bias voltage is applied between P-type or N-type extraction electrodes formed in source and drain regions and an N-type extraction electrode provided in an N-well region or a P-type extraction electrode provided in a P-well region. Instability in the MOS capacitance element with time is thus eliminated.Type: GrantFiled: August 3, 2004Date of Patent: October 21, 2008Assignees: Epson Toyocom Corporation, NEC Electronics CorporationInventors: Tsuyoshi Ohshima, Shigehisa Kurogo, Masayuki Ishikawa, Susumu Kurosawa, Yuki Fujimoto, Yasutaka Nakashiba
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Patent number: 7427823Abstract: A piezoelectric vibration element is provided which includes a piezoelectric substrate formed of a thickness slip based piezoelectric material and a metal layer formed on a surface of the piezoelectric substrate. In the piezoelectric vibration element, a surface of the metal layer is covered by a layer formed by chemical absorption with a material having a nonbonding electron pair.Type: GrantFiled: February 1, 2006Date of Patent: September 23, 2008Assignee: Epson Toyocom CorporationInventors: Tsuyoshi Ohshima, Shin Hasegawa, Noriyuki Watanabe
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Patent number: 7388445Abstract: A quartz oscillator for quadrature modulation has a quartz oscillating circuit including a transistor, a quartz oscillator, a capacitor, and a resistor, a double-mode quartz filter, a reactance element, and an amplifier. The quartz oscillator is constituted so that an output of the quartz oscillating circuit is a first output, and its output is connected to one terminal of the double-mode quartz filter where a common electrode is grounded. The reactance element is connected in parallel between the other terminal and the ground, and a second output is obtained from a connected point via the amplifier.Type: GrantFiled: March 1, 2005Date of Patent: June 17, 2008Assignee: Toyo Communication Equipment Co., Ltd.Inventors: Tsuyoshi Ohshima, Toshiyasu Takasugi, Masahiro Onuki
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Publication number: 20060208816Abstract: Deterioration in frequency stability with time in a conventional piezoelectric oscillator using an accumulation type MOS capacitance element is improved. A P-channel transistor type or an N-channel transistor type is used as a MOS capacitance element in a variable capacitance circuit used in a piezoelectric oscillator. A bias voltage is applied between P-type or N-type extraction electrodes formed in source and drain regions and an N-type extraction electrode provided in an N-well region or a P-type extraction electrode provided in a P-well region. Instability in the MOS capacitance element with time is thus eliminated.Type: ApplicationFiled: August 3, 2004Publication date: September 21, 2006Inventors: Tsuyoshi Ohshima, Shigehisa Kurogo, Masayuki Ishikawa, Susumu Kurosawa, Yuki Fujimoto, Yasutaka Nakashiba
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Publication number: 20060170305Abstract: A piezoelectric vibration element is provided which includes a piezoelectric substrate formed of a thickness slip based piezoelectric material and a metal layer formed on a surface of the piezoelectric substrate. In the piezoelectric vibration element, a surface of the metal layer is covered by a layer formed by chemical absorption with a material having a nonbonding electron pair.Type: ApplicationFiled: February 1, 2006Publication date: August 3, 2006Applicant: EPSON TOYOCOM CORPORATIONInventors: Tsuyoshi Ohshima, Shin Hasegawa, Noriyuki Watanabe
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Patent number: 7009459Abstract: A piezoelectric oscillation circuit has a series circuit composed of a capacitor Cbe as a part of a load capacitance and a capacitor Ce inserted and connected between a base of an oscillation transistor TR1 and the ground, and has an emitter resistor Re connected to a connection midpoint A of the series circuit and an emitter of the oscillation transistor TR1. Further, a base bias circuit composed of a resistor RB 1 and a resistor RB2 is connected to a base of the oscillation transistor TR1, has a piezoelectric element Xtal and a capacitor C1 inserted and connected in series between the base of the oscillation transistor TR1 and the ground, and further has a resistor Rc connected to a collector of the oscillation transistor TR1 together with the power supply voltage Vcc line, and has a capacitor Cce connected between the collector and the emitter.Type: GrantFiled: October 1, 2003Date of Patent: March 7, 2006Assignee: Toyo Communication Equipment Co., Ltd.Inventors: Tomio Satoh, Jun Matsuoka, Tsuyoshi Ohshima
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Publication number: 20050195043Abstract: A quartz oscillator for quadrature modulation has a quartz oscillating circuit including a transistor, a quartz oscillator, a capacitor, and a resistor, a double-mode quartz filter, a reactance element, and an amplifier. The quartz oscillator is constituted so that an output of the quartz oscillating circuit is a first output, and its output is connected to one terminal of the double-mode quartz filter where a common electrode is grounded. The reactance element is connected in parallel between the other terminal and the ground, and a second output is obtained from a connected point via the amplifier.Type: ApplicationFiled: March 1, 2005Publication date: September 8, 2005Inventors: Tsuyoshi Ohshima, Toshiyasu Takasugi, Masahiro Onuki
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Publication number: 20050073372Abstract: A piezoelectric oscillator for suppressing a vibrator current easily with a simple circuit configuration is provided. A piezoelectric oscillation circuit has a series circuit composed of a capacitor Cbe as a part of a load capacitance and a capacitor Ce inserted and connected between a base of an oscillation transistor TR1 and the ground, and has an emitter resistor Re connected to a connection midpoint A of the series circuit and an emitter of the oscillation transistor TR1. Further, a base bias circuit composed of a resistor RB1 and a resistor RB2 is connected to a base of the oscillation transistor TR1, has a piezoelectric element Xtal and a capacitor C1 inserted and connected in series between the base of the oscillation transistor TR1 and the ground, and further has a resistor Rc connected to a collector of the oscillation transistor TR1 together with the power supply voltage Vcc line, and has a capacitor Cce connected between the collector and the emitter.Type: ApplicationFiled: October 1, 2003Publication date: April 7, 2005Inventors: Tomio Satoh, Jun Matsuoka, Tsuyoshi Ohshima
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Patent number: 5144289Abstract: The present invention has disclosed an indication display unit for a vehicle enabling a driver to sight an indicated image on a windshield thereof comprising, a display device for indicating an image thereon, a light source for projecting light to the above display device, a lens through which the indicated image is projected on the windshield, a light conducting means provided between the display device and the lens, having a light detecting element and a window portion therein, a shutter means for intercepting incident sunbeams or the like rotatably arranged near said light conducting means, and a control means for controlling the shutter means.Type: GrantFiled: April 25, 1991Date of Patent: September 1, 1992Assignee: Yazaki CorporationInventor: Tsuyoshi Ohshima
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Patent number: 5048927Abstract: An indication display unit for a vehicle, includes a reflecting device having a reflecting surface directed to a driver's seat which reflecting surface has a reduced reflectivity. An indicating device having an indicating surface directed to the reflecting surface of the reflecting device. Operational information concerning driving operation of the vehicle is indicated on the indicating surface of the indicating device, and is reflected on the reflecting surface of the reflecting device to be visibly observed by a driver. As the reflectivity of the reflecting surface is reduced, the visibility of the displayed image from the indicating surface may be improved. Since the reflecting device is provided on a dashboard, and the indicating device is located at any position other than the dashboard, a meter hood may be removed to ensure more space in the dashboard.Type: GrantFiled: January 27, 1989Date of Patent: September 17, 1991Assignee: Yazaki CorporationInventors: Tai Inoue, Tsuyoshi Ohshima, Tatsumi Ohtsuka, Hiroshi Ichikawa
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Patent number: 4925272Abstract: An indication display unit for a vehicle comprises an indicating device provided in a dash board and a reflecting device provided thereon. An indicated image is reflected on the reflecting device so as to be visibly observed by a driver in superposition on an external front view through a windshield. A shifting device of the indicated image is provided for moving a projecting position thereof in accordance with the velocity of a vehicle. The indication display unit of the above structure can be divided in two types; a direct image projecting type and an indirect projecting type. The respective type can be defined as the indication display unit provided with an indicated image shifting device. By using the above display unit, the position of the displayed image to be observed can be shifted in accordance with the vehicle speed, whereby the visibly observable range by a driver can be greatly enlarged without moving the position of the driver's viewing point.Type: GrantFiled: February 8, 1989Date of Patent: May 15, 1990Assignee: Yazaki CorporationInventors: Tsuyoshi Ohshima, Kunimitsu Aoki