Patents by Inventor Yutaka Inaba
Yutaka Inaba 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: 8278199Abstract: Reliability of a semiconductor element and its product yield are improved by reducing variations in the electrical characteristic of a metal silicide layer. After forming a nickel-platinum alloy film over a semiconductor substrate, by carrying out a first thermal treatment at a thermal treatment temperature of 210 to 310° C. using a heater heating device, the technique causes the nickel-platinum alloy film and silicon to react with each other to form a platinum-added nickel silicide layer in a (PtNi)2Si phase. After removing unreacted nickel-platinum alloy film, the technique carries out a second thermal treatment having the thermal treatment temperature higher than that of the first thermal treatment to form the platinum-added nickel silicide layer in a PtNiSi phase. The temperature rise rate of each thermal treatment is set to 10° C./s or more.Type: GrantFiled: September 23, 2011Date of Patent: October 2, 2012Assignee: Renesas Electronics CorporationInventors: Shigenari Okada, Takuya Futase, Yutaka Inaba
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Publication number: 20120077321Abstract: Reliability of a semiconductor element and its product yield are improved by reducing variations in the electrical characteristic of a metal silicide layer. After forming a nickel-platinum alloy film over a semiconductor substrate, by carrying out a first thermal treatment at a thermal treatment temperature of 210 to 310° C. using a heater heating device, the technique causes the nickel-platinum alloy film and silicon to react with each other to form a platinum-added nickel silicide layer in a (PtNi)2Si phase. After removing unreacted nickel-platinum alloy film, the technique carries out a second thermal treatment having the thermal treatment temperature higher than that of the first thermal treatment to form the platinum-added nickel silicide layer in a PtNiSi phase. The temperature rise rate of each thermal treatment is set to 10° C./s or more.Type: ApplicationFiled: September 23, 2011Publication date: March 29, 2012Inventors: SHIGENARI OKADA, TAKUYA FUTASE, YUTAKA INABA
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Patent number: 8039378Abstract: To provide a technique capable of improving the reliability of a semiconductor element and its product yield by reducing the variations in the electrical characteristic of a metal silicide layer. After forming a nickel-platinum alloy film over a semiconductor substrate 1, by carrying out a first thermal treatment at a thermal treatment temperature of 210 to 310° C. using a heater heating device, the technique causes the nickel-platinum alloy film and silicon to react with each other to form a platinum-added nickel silicide layer in a (PtNi)2Si phase. Subsequently, after removing the unreacted nickel-platinum alloy film, the technique carries out a second thermal treatment having the thermal treatment temperature higher than that of the first thermal treatment to form the platinum-added nickel silicide layer in a PtNiSi phase. The temperature rise rate of the first thermal treatment is set to 10° C./s or more (for example, 30 to 250° C.Type: GrantFiled: January 23, 2009Date of Patent: October 18, 2011Assignee: Renesas Electronics CorporationInventors: Shigenari Okada, Takuya Futase, Yutaka Inaba
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Publication number: 20110121738Abstract: A light-emitting apparatus includes a plurality of light-emitting devices which are connected in series and formed by alternately disposing electrodes and organic layers including a light-emitting material, wherein the electrodes include one electrode and another electrode disposed at an anode end and a cathode end of the light-emitting devices, respectively, and an intermediate electrode disposed between two of the organic layers which serves as a cathode of the light-emitting device disposed on a side of the anode end and as an anode of the light-emitting device disposed on a side of the cathode end; the intermediate electrode is connected to a drive circuit having two current output terminals connected in common; the drive circuit receives data signals concerning two of the plurality of light-emitting devices for which the intermediate electrode serves as the anode and the cathode, respectively; and the drive circuit outputs currents which are different in direction from each other from the two current outType: ApplicationFiled: June 19, 2009Publication date: May 26, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Fujio Kawano, Masami Iseki, Kohei Nagayama, Nobuhiko Sato, Toshihiko Mimura, Hiroyuki Maru, Yutaka Inaba
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Patent number: 7683587Abstract: A generation device, having a magneto generator, in which an AC control voltage is applied from a battery charged with a rectified output of the magneto generator to an armature winding of the generator through an inverter to control a battery voltage to a limit value or less, comprising: fixed point detection means for detecting a fixed point on a waveform of a phase current of the generator; phase current phase detection means for detecting a phase angle of the fixed point in relation to a reference phase; arithmetical operation means for arithmetically operating timing for generating the AC control voltage with reference to the phase of the fixed point; and inverter control means for controlling switch elements of the inverter so as to generate the AC control voltage at the timing arithmetically operated by the arithmetical operation means.Type: GrantFiled: August 29, 2007Date of Patent: March 23, 2010Assignee: Kokusan Denki Co., Ltd.Inventors: Yutaka Inaba, Masanori Nakagawa
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Patent number: 7629955Abstract: An active matrix display apparatus includes an active matrix display panel comprising a plurality of pixels arranged in a matrix in a row direction and a column direction, each pixel being constituted by a plurality of subpixels; and a drive circuit for applying a voltage to each of the subpixels so that a polarity of the voltage is inverted at a predetermined period in each of a row direction and a column direction. The plurality of subpixels are arranged in the row direction at a period different from half of the predetermined period of polarity inversion of the voltage in the row direction, thus providing flicker-less color display device even when general driver ICs for dot inversion drive are used.Type: GrantFiled: December 13, 2005Date of Patent: December 8, 2009Assignee: Canon Kabushiki KaishaInventors: Yasufumi Asao, Hideo Mori, Yutaka Inaba
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Patent number: 7616179Abstract: An organic EL display apparatus has a driving circuit. In the driving circuit, the source and drain of a driving transistor and the anode and cathode of an organic EL device are connected in series between voltage sources. A current passes between the source and drain of the driving transistor and between the anode and cathode of the organic EL device in accordance with a voltage between the gate and source of the driving transistor. Consequently, the organic EL device emits light. In order to store the voltage in the capacitor, a constant voltage source is connected to the gate of the driving transistor and the above-described series connection is disconnected at the source of the driving transistor and connected to a signal source. Then, a current signal output from the signal source passes between the source and drain of the driving transistor, and charges are stored in a capacitor in accordance with the current signal.Type: GrantFiled: March 30, 2007Date of Patent: November 10, 2009Assignee: Canon Kabushiki KaishaInventors: Katsumi Nakagawa, Somei Kawasaki, Masami Iseki, Yutaka Inaba
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Publication number: 20090191707Abstract: To provide a technique capable of improving the reliability of a semiconductor element and its product yield by reducing the variations in the electrical characteristic of a metal silicide layer. After forming a nickel-platinum alloy film over a semiconductor substrate 1, by carrying out a first thermal treatment at a thermal treatment temperature of 210 to 310° C. using a heater heating device, the technique causes the nickel-platinum alloy film and silicon to react with each other to form a platinum-added nickel silicide layer in a (PtNi)2Si phase. Subsequently, after removing the unreacted nickel-platinum alloy film, the technique carries out a second thermal treatment having the thermal treatment temperature higher than that of the first thermal treatment to form the platinum-added nickel silicide layer in a PtNiSi phase. The temperature rise rate of the first thermal treatment is set to 10° C./s or more (for example, 30 to 250° C.Type: ApplicationFiled: January 23, 2009Publication date: July 30, 2009Inventors: Shigenari OKADA, Takuya Futase, Yutaka Inaba
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Publication number: 20080067981Abstract: A generation device, having a magneto generator, in which an AC control voltage is applied from a battery charged with a rectified output of the magneto generator to an armature winding of the generator through an inverter to control a battery voltage to a limit value or less, comprising: fixed point detection means for detecting a fixed point on a waveform of a phase current of the generator; phase current phase detection means for detecting a phase angle of the fixed point in relation to a reference phase; arithmetical operation means for arithmetically operating timing for generating the AC control voltage with reference to the phase of the fixed point; and inverter control means for controlling switch elements of the inverter so as to generate the AC control voltage at the timing arithmetically operated by the arithmetical operation means.Type: ApplicationFiled: August 29, 2007Publication date: March 20, 2008Applicant: Kokusan Denki Co., Ltd.Inventors: Yutaka Inaba, Masanori Nakagawa
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Publication number: 20070229428Abstract: An organic EL display apparatus has a driving circuit. In the driving circuit, the source and drain of a driving transistor and the anode and cathode of an organic EL device are connected in series between voltage sources. A current passes between the source and drain of the driving transistor and between the anode and cathode of the organic EL device in accordance with a voltage between the gate and source of the driving transistor. Consequently, the organic EL device emits light. In order to store the voltage in the capacitor, a constant voltage source is connected to the gate of the driving transistor and the above-described series connection is disconnected at the source of the driving transistor and connected to a signal source. Then, a current signal output from the signal source passes between the source and drain of the driving transistor, and charges are stored in a capacitor in accordance with the current signal.Type: ApplicationFiled: March 30, 2007Publication date: October 4, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Katsumi Nakagawa, Somei Kawasaki, Masami Iseki, Yutaka Inaba
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Publication number: 20070205972Abstract: An active matrix display apparatus includes an active matrix display panel comprising a plurality of pixels arranged in a matrix in a row direction and a column direction, each pixel being constituted by a plurality of subpixels; and a drive circuit for applying a voltage to each of the subpixels so that a polarity of the voltage is inverted at a predetermined period in each of a row direction and a column direction. The plurality of subpixels are arranged in the row direction at a period different from half of the predetermined period of polarity inversion of the voltage in the row direction, thus providing flicker-less color display device even when general driver ICs for dot inversion drive are used.Type: ApplicationFiled: December 13, 2005Publication date: September 6, 2007Applicant: Canon Kabushiki KaishaInventors: Yasufumi Asao, Hideo Mori, Yutaka Inaba
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Patent number: 7026774Abstract: A rotor position determination device for determining a position of a rotor of a rotating electric machine relative to m-phase (m is an integer equal to or more than 2) armature coils, the rotating electric machine including a stator having the m-phase armature coils, and the rotor having a magnetic field, includes: transient current energizing means for performing, for each of the m-phase armature coils, a transient current energizing process for temporarily applying a DC voltage to the armature coil of each phase of the rotating electric machine to pass a transient current through the armature coil of each phase; and rotor position determination means for detecting the transient current passed through each of the m-phase armature coils and determining the position of the rotor relative to the m-phase armature coils from the detected transient currents.Type: GrantFiled: July 25, 2005Date of Patent: April 11, 2006Assignee: Kokusan Denki Co., Ltd.Inventors: Yutaka Inaba, Masakatsu Takahashi, Tomohiro Nakagawa
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Publication number: 20060022623Abstract: A rotor position determination device for determining a position of a rotor of a rotating electric machine relative to m-phase (m is an integer equal to or more than 2) armature coils, the rotating electric machine including a stator having the m-phase armature coils, and the rotor having a magnetic field, includes: transient current energizing means for performing, for each of the m-phase armature coils, a transient current energizing process for temporarily applying a DC voltage to the armature coil of each phase of the rotating electric machine to pass a transient current through the armature coil of each phase; and rotor position determination means for detecting the transient current passed through each of the m-phase armature coils and determining the position of the rotor relative to the m-phase armature coils from the detected transient currents.Type: ApplicationFiled: July 25, 2005Publication date: February 2, 2006Applicant: Kokusan Denki Co., LtdInventors: Yutaka Inaba, Masakatsu Takahashi, Tomohiro Nakagawa
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Publication number: 20050246244Abstract: Since icons for identifying the contents of orders received or orders placed and the numbers of data representing the processing a status of the orders received or orders placed are displayed in combination to manage orders received and orders placed for parts, the processing status such as orders expected to be received, determination of orders, delay in scheduling, acceptance, and the like in the shop can be visually and quickly checked. Detailed information associated with the orders expected to be received, determination of orders, delay in scheduling, and the like is visually presented as a graph and table which correspond to the parts management items identified by icons. Progress in order received/placed processing can be reviewed on a day-to-day basis, and comparison of a plurality of managed items can be made, thus realizing versatile parts management.Type: ApplicationFiled: July 7, 2005Publication date: November 3, 2005Inventors: Masahiko Sakayori, Naoki Otsuji, Yutaka Inaba, Koji Kanaya, Fujio Someya, Jotaro Takahashi
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Patent number: 6957190Abstract: Since icons for identifying the contents of orders received or orders placed and the numbers of data representing the processing a status of the orders received or orders placed are displayed in combination to manage orders received and orders placed for parts, the processing status such as orders expected to be received, determination of orders, delay in scheduling, acceptance, and the like in the shop can be visually and quickly checked. Detailed information associated with the orders expected to be received, determination of orders, delay in scheduling, and the like is visually presented as a graph and table which correspond to the parts management items identified by icons. Progress in order received/placed processing can be reviewed on day-to-day basis, and comparison of a plurality of managed items can be made, thus realizing versatile parts management.Type: GrantFiled: September 17, 1998Date of Patent: October 18, 2005Assignee: Canon Kabushiki KaishaInventors: Masahiko Sakayori, Naoki Otsuji, Yutaka Inaba, Koji Kanaya, Fujio Someya, Jotaro Takahashi
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Publication number: 20040229427Abstract: A pointed shape may be present on the top end of the capacitor bottom (lower) electrode of a cylindrical capacitor. To cover this pointed end, a two-layer dielectric film of a capacitor dielectric film and another capacitor dielectric film is formed. As a result, while the capacitor bottom electrode has a pointed shape on its top end, the dielectric film covering the portion having a pointed shape has a greater thickness than the dielectric film covering the other parts of the vertical portion. Thus, even if the portion with a pointed shape on the capacitor bottom electrode has a concentration of electric field, the dielectric film exhibits a sufficient insulation performance to prevent leakage current. In this way, a semiconductor device is provided with an improved property of a capacitor dielectric film by the reduction of the risk of generating a leakage current in the capacitor dielectric film.Type: ApplicationFiled: October 23, 2003Publication date: November 18, 2004Applicant: RENESAS TECHNOLOGY CORP.Inventors: Kazutoshi Wakao, Junichi Tsuchimoto, Yutaka Inaba, Kazuhiro Aihara
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Patent number: 6787931Abstract: A starter generator for an internal combustion engine including: a rotating electric machine having a magnet rotor mounted to a crankshaft of the internal combustion engine, and a stator with a three-phase first armature coil and a three-phase second armature coil; a first battery and a second battery connected in series or in parallel; a first driver circuit provided between the first armature coil and the first battery, and a second driver circuit provided between the second armature coil and the second battery; and an inverter that converts voltages of the first battery and the second battery into an AC voltage, wherein drive currents are supplied to the first armature coil and the second armature coil from the first battery and the second battery through switch circuits in the first driver and the second driver, when the engine is started, and induced voltages of the first armature coil and the second armature coil are supplied to the batteries through rectifier circuits in the first driver and the secondType: GrantFiled: July 16, 2003Date of Patent: September 7, 2004Assignee: Kokusan Denki Co., Ltd.Inventors: Masanori Nakagawa, Yutaka Inaba, Shuichi Muramatsu, Hideaki Suzuki
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Patent number: 6734488Abstract: A semiconductor device with a capacitor having a charge retaining capability improved by preventing generation of a leakage current in a capacitor dielectric film, and a manufacturing method of the same are provided. An indium oxide film is formed to continuously cover the upper surfaces of a tungsten film and an interlayer oxide film. A tantalum oxide film is formed to continuously cover the surface of the indium oxide film and a portion of the upper surface of the interlayer oxide film. Another indium oxide film is formed to cover the upper surface of the tantalum oxide film.Type: GrantFiled: February 7, 2000Date of Patent: May 11, 2004Assignee: Renesas Technology Corp.Inventors: Kazuhiro Aihara, Junichi Tsuchimoto, Yutaka Inaba, Kazutoshi Wakao
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Publication number: 20040036295Abstract: A starter generator for an internal combustion engine including: a rotating electric machine having a magnet rotor mounted to a crankshaft of the internal combustion engine, and a stator with a three-phase first armature coil and a three-phase second armature coil; a first battery and a second battery connected in series or in parallel; a first driver circuit provided between the first armature coil and the first battery, and a second driver circuit provided between the second armature coil and the second battery; and an inverter that converts voltages of the first battery and the second battery into an AC voltage, wherein drive currents are supplied to the first armature coil and the second armature coil from the first battery and the second battery through switch circuits in the first driver and the second driver, when the engine is started, and induced voltages of the first armature coil and the second armature coil are supplied to the batteries through rectifier circuits in the first driver and the secondType: ApplicationFiled: July 16, 2003Publication date: February 26, 2004Inventors: Masanori Nakagawa, Yutaka Inaba, Shuichi Muramatsu, Hideaki Suzuki
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Patent number: 6647325Abstract: A control system for an electric motor for driving an electric vehicle comprising lock state judgment means to judge that the electric motor is in a lock state when a state where a rotational speed of a brushless DC motor has a value equal to or less than a set lock start rotational speed while an opening degree of an accelerator is equal to or more than a predetermined judgment opening degree continues during predetermined judgment time and lock time drive current control means to perform such a control as to gradually reduce a drive current of the motor to a lock-time limit value. Thus, when the rotational speed of the vehicle is lowered until the motor gets the lock state while the vehicle is driven in the state where the accelerator is opened with the opening degree being equal to or more than the judgment opening degree, the drive current is decreased whereby a temperature of armature coils is prevented from abnormally rising.Type: GrantFiled: February 19, 2002Date of Patent: November 11, 2003Assignee: Kokusan Denki Co., Ltd.Inventors: Mitsuyoshi Shimazaki, Yutaka Inaba