Patents by Inventor Tatsuo Namikawa
Tatsuo Namikawa 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: 20150325368Abstract: A thin film capacitor comprises: a laminated body in which a dielectric layer and an upper electrode layer are successively laminated on a base electrode; a protective layer that covers a part of the base electrode, the dielectric layer and the upper electrode layer and includes a through-hole respectively on the base electrode and on the upper electrode layer; and terminal electrodes that are electrically connected with the base electrode and the upper electrode layer through the through-holes of the protective layer, and a modulus of longitudinal elasticity (Young's modulus) of the protective layer is 0.1 GPa to 2.0 GPa.Type: ApplicationFiled: May 7, 2015Publication date: November 12, 2015Inventors: Tatsuo NAMIKAWA, Yoshihiko YANO, Yasunobu OIKAWA
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Patent number: 9076600Abstract: A thin film capacitor includes two or more of dielectric body layers that are alternately laminated on an under-electrode, and internal electrode layers that are laminated between the dielectric body layers, and are exposed off the dielectric body layer, and a connection electrode that is electrically connected to the internal electrode layers via the exposed portion of the internal electrode layers, A relationship between an average grain size D of crystal grains in the internal electrode layers and an average grain size d of crystal grains in the connection electrode is D>d.Type: GrantFiled: March 12, 2013Date of Patent: July 7, 2015Assignee: TDK CorporationInventors: Yoshihiko Yano, Tatsuo Namikawa, Yasunobu Oikawa
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Patent number: 9030800Abstract: A thin film capacitor includes an under electrode, a plurality of dielectric body layers and a plurality of internal electrode layers that are alternately laminated on the under electrode, the internal electrode layers respectively including protrusion parts that each protrude from the dielectric body layers viewed in the lamination direction, and connection electrodes to which at least a portion of each of the protrusion parts contacts. Assuming that protrusion amounts of the protrusion parts of the internal electrode layers that are connected to the same connection electrode are regarded as L, a protrusion amount Ln of a protrusion part of nth (n?2) internal electrode layer from the under electrode side is smaller than another protrusion amount Ln-1 of another protrusion part of (n?1)th internal electrode layer.Type: GrantFiled: March 12, 2013Date of Patent: May 12, 2015Assignee: TDK CorporationInventors: Tatsuo Namikawa, Yoshihiko Yano, Yasunobu Oikawa
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Publication number: 20130258544Abstract: A thin film capacitor includes an under electrode, a plurality of dielectric body layers and a plurality of internal electrode layers that are alternately laminated on the under electrode, the internal electrode layers respectively including protrusion parts that each protrude from the dielectric body layers viewed in the lamination direction, and connection electrodes to which at least a portion of each of the protrusion parts contacts. Assuming that protrusion amounts of the protrusion parts of the internal electrode layers that are connected to the same connection electrode are regarded as L, a protrusion amount Ln of a protrusion part of nth (n?2) internal electrode layer from the under electrode side is smaller than another protrusion amount Ln-1 of another protrusion part of (n-1)th internal electrode layer.Type: ApplicationFiled: March 12, 2013Publication date: October 3, 2013Applicant: TDK CorporationInventors: Tatsuo NAMIKAWA, Yoshihiko Yano, Yasunobu Oikawa
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Publication number: 20130258545Abstract: A thin film capacitor includes two or more of dielectric body layers that are alternately laminated on an under-electrode, and internal electrode layers that are laminated between the dielectric body layers, and are exposed off the dielectric body layer, and a connection electrode that is electrically connected to the internal electrode layers via the exposed portion of the internal electrode layers, A relationship between an average grain size D of crystal grains in the internal electrode layers and an average grain size d of crystal grains in the connection electrode is D>d.Type: ApplicationFiled: March 12, 2013Publication date: October 3, 2013Applicant: TDK CorporationInventors: Yoshihiko YANO, Tatsuo Namikawa, Yasunobu Oikawa
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Patent number: 8351185Abstract: The invention provides an electronic component and a manufacturing method thereof that can achieve an improved adhesion strength when the electronic component is solder-mounted onto an external substrate and can thereby obtain considerably improved electric properties and reliabilities, etc. An electronic component, which is a capacitor 1, has: a circuit element 5a formed on a substrate 2; an electrode layer 5b connected to the circuit element 5a; passivation layers 6 and 8 that cover the electrode layer 5b; and terminal electrodes 9a and 9b connected to the electrode layer 5b via via-conductors Va and Vb formed through the passivation layers 6 and 8, the terminal electrodes 9a and 9b being formed to cover the side wall of the passivation layers 6 and 8.Type: GrantFiled: August 10, 2010Date of Patent: January 8, 2013Assignee: TDK CorporationInventors: Takashi Ohtsuka, Kyung-Ku Choi, Tatsuo Namikawa, Hitoshi Yamaguchi
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Patent number: 8324509Abstract: The invention provides an electronic component and a manufacturing method thereof that: can allow electronic components to be mounted on an external substrate at a higher density than before; can adjust the height (level) of a terminal electrode as required and desired, thereby solving problems that would occur in the inspection of the conventional electronic components; and can also improve the yield in the mounting of electronic components, thereby achieving increased productivity.Type: GrantFiled: August 10, 2010Date of Patent: December 4, 2012Assignee: TDK CorporationInventors: Takashi Ohtsuka, Kyung-Ku Choi, Tatsuo Namikawa, Hitoshi Yamaguchi
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Patent number: 8056414Abstract: An angular velocity sensor of a horizontally located type, in which influence of a translational acceleration applied thereto from a lateral direction is readily removed and a fixed portion thereof is easily fixed, is provided. It includes a fixed portion fixed to the top surface of a sensor element supporting portion of a casing, an upper detection arm portion and a lower detection arm portion respectively connected to the fixed portion on sides opposite to each other and extending along a plane parallel to the top surface of the sensor element supporting portion, and a pair of upper vibration arms connected to the fixed portion with the upper detection arm portion in between. The fixed portion includes one or more slits extending at least in a direction intersecting with the extending direction of the upper detection arm portion.Type: GrantFiled: March 26, 2008Date of Patent: November 15, 2011Assignee: TDK CorporationInventors: Takao Noguchi, Kenichi Tochi, Ken Unno, Tatsuo Namikawa
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Patent number: 7975546Abstract: An angular velocity sensor of a horizontally located type, which can easily remove the translational acceleration influence thereto from the lateral direction, is provided. It includes a fixed portion fixed to the surface of a sensor element supporting portion of a casing, an upper detection arm and a lower detection arm, each of them being connected to the fixed portion on sides opposite to each other and extending along a plane parallel to the surface place of the sensor element supporting portion, and a pair of upper vibration arms connected to the fixed portion in such a manner as to form a pair of arms with the upper detection arm in between and extending in a direction parallel to the extending direction of the upper detection arm.Type: GrantFiled: December 20, 2007Date of Patent: July 12, 2011Assignee: TDK CorporationInventors: Takao Noguchi, Kenichi Tochi, Ken Unno, Tatsuo Namikawa
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Patent number: 7975545Abstract: Proposed is a horizontally located angular velocity sensor hardly affected by a translational acceleration in a lateral direction, and in which a fixed section is easily fixed. The angular velocity sensor includes a fixed section fixed on a support surface. On both sides of the fixed section, an arm section of an upper detection arm and a pair of upper drive arms extending along a plane parallel to the support surface, and an arm section of a lower detection arm and a pair of lower drive arms extending along the plane parallel to the support surface are coupled, respectively. The upper detection arm and the pair of upper drive arms are coupled without the fixed section in between, and the lower detection arm and the pair of lower drive arms are coupled without the fixed section in between.Type: GrantFiled: December 6, 2007Date of Patent: July 12, 2011Assignee: TDK CorporationInventors: Takao Noguchi, Kenichi Tochi, Ken Unno, Tatsuo Namikawa
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Patent number: 7934422Abstract: Provided is a horizontally located sensitive angular velocity sensor capable of easily eliminating influence of acceleration in a lateral direction and whose fixed section is easily fixed. The angular velocity sensor includes a pair of fixed sections fixed on a top of an sensor support section of a case, a detection arm extending along a plane parallel to the sensor support section, and a pair of upper drive arm and lower drive arm extending along the plane parallel to the sensor support section and extending in a direction opposite to each other so as to intersect an extending direction of the detection arm.Type: GrantFiled: March 26, 2008Date of Patent: May 3, 2011Assignee: TDK CorporationInventors: Takao Noguchi, Kenichi Tochi, Ken Unno, Tatsuo Namikawa
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Publication number: 20110042127Abstract: The invention provides an electronic component and a manufacturing method thereof that: can allow electronic components to be mounted on an external substrate at a higher density than before; can adjust the height (level) of a terminal electrode as required and desired, thereby solving problems that would occur in the inspection of the conventional electronic components; and can also improve the yield in the mounting of electronic components, thereby achieving increased productivity.Type: ApplicationFiled: August 10, 2010Publication date: February 24, 2011Applicant: TDK CORPORATIONInventors: Takashi OHTSUKA, Kyung-Ku Choi, Tatsuo Namikawa, Hitoshi Yamaguchi
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Publication number: 20110044011Abstract: The invention provides an electronic component and a manufacturing method thereof that can achieve an improved adhesion strength when the electronic component is solder-mounted onto an external substrate and can thereby obtain considerably improved electric properties and reliabilities, etc. An electronic component, which is a capacitor 1, has: a circuit element 5a formed on a substrate 2; an electrode layer 5b connected to the circuit element 5a; passivation layers 6 and 8 that cover the electrode layer 5b; and terminal electrodes 9a and 9b connected to the electrode layer 5b via via-conductors Va and Vb formed through the passivation layers 6 and 8, the terminal electrodes 9a and 9b being formed to cover the side wall of the passivation layers 6 and 8.Type: ApplicationFiled: August 10, 2010Publication date: February 24, 2011Applicant: TDK CORPORATIONInventors: Takashi OHTSUKA, Kyung-Ku Choi, Tatsuo Namikawa, Hitoshi Yamaguchi
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Patent number: 7714486Abstract: The present invention provides an angular velocity sensor in which higher sensitivity for sensors is available even with a smaller base portion. The angular velocity sensor includes a fixed portion fixed to the top surface of a sensor element supporting portion of a casing, an upper detection arm and a lower detection arm, each of them being connected to the fixed portion on sides opposite to each other and extending along a plane parallel to the top surface of the sensor element supporting portion, and a pair of upper vibration arms connected to the fixed portion in such a manner as to form a pair of arms with the upper detection arm in between and extending in a direction parallel to the extending direction of the upper detection arm.Type: GrantFiled: March 26, 2008Date of Patent: May 11, 2010Assignee: TDK CorporationInventors: Kenichi Tochi, Tatsuo Namikawa, Ken Unno, Takao Noguchi
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Publication number: 20090165554Abstract: Provided is a horizontally located sensitive angular velocity sensor capable of easily eliminating influence of acceleration in a lateral direction and whose fixed section is easily fixed. The angular velocity sensor includes a pair of fixed sections fixed on a top of an sensor support section of a case, a detection arm extending along a plane parallel to the sensor support section, and a pair of upper drive arm and lower drive arm extending along the plane parallel to the sensor support section and extending in a direction opposite to each other so as to intersect an extending direction of the detection arm.Type: ApplicationFiled: March 26, 2008Publication date: July 2, 2009Applicant: TDK CORPORATIONInventors: Takao Noguchi, Kenichi Tochi, Ken Unno, Tatsuo Namikawa
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Publication number: 20090039739Abstract: The present invention provides an angular velocity sensor in which higher sensitivity for sensors is available even with a smaller base portion. The angular velocity sensor includes a fixed portion fixed to the top surface of a sensor element supporting portion of a casing, an upper detection arm and a lower detection arm, each of them being connected to the fixed portion on sides opposite to each other and extending along a plane parallel to the top surface of the sensor element supporting portion, and a pair of upper vibration arms connected to the fixed portion in such a manner as to form a pair of arms with the upper detection arm in between and extending in a direction parallel to the extending direction of the upper detection arm.Type: ApplicationFiled: March 26, 2008Publication date: February 12, 2009Applicant: TDK CORPORATIONInventors: Kenichi Tochi, Tatsuo Namikawa, Ken Unno, Takao Noguchi
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Publication number: 20080236281Abstract: An angular velocity sensor of a horizontally located type, in which influence of a translational acceleration applied thereto from a lateral direction is readily removed and a fixed portion thereof is easily fixed, is provided. It includes a fixed portion fixed to the top surface of a sensor element supporting portion of a casing, an upper detection arm portion and a lower detection arm portion respectively connected to the fixed portion on sides opposite to each other and extending along a plane parallel to the top surface of the sensor element supporting portion, and a pair of upper vibration arms connected to the fixed portion with the upper detection arm portion in between. The fixed portion includes one or more slits extending at least in a direction intersecting with the extending direction of the upper detection arm portion.Type: ApplicationFiled: March 26, 2008Publication date: October 2, 2008Applicant: TDK CORPORATIONInventors: Takao Noguchi, Kenichi Tochi, Ken Unno, Tatsuo Namikawa
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Publication number: 20080148848Abstract: An angular velocity sensor of a horizontally located type, which can easily remove the translational acceleration influence thereto from the lateral direction, is provided. It includes a fixed portion fixed to the surface of a sensor element supporting portion of a casing, an upper detection arm and a lower detection arm, each of them being connected to the fixed portion on sides opposite to each other and extending along a plane parallel to the surface place of the sensor element supporting portion, and a pair of upper vibration arms connected to the fixed portion in such a manner as to form a pair of arms with the upper detection arm in between and extending in a direction parallel to the extending direction of the upper detection arm.Type: ApplicationFiled: December 20, 2007Publication date: June 26, 2008Applicant: TDK CORPORATIONInventors: Takao Noguchi, Kenichi Tochi, Ken Unno, Tatsuo Namikawa
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Publication number: 20080134781Abstract: Proposed is a horizontally located angular velocity sensor hardly affected by a translational acceleration in a lateral direction, and in which a fixed section is easily fixed. The angular velocity sensor includes a fixed section fixed on a support surface. On both sides of the fixed section, an arm section of an upper detection arm and a pair of upper drive arms extending along a plane parallel to the support surface, and an arm section of a lower detection arm and a pair of lower drive arms extending along the plane parallel to the support surface are coupled, respectively. The upper detection arm and the pair of upper drive arms are coupled without the fixed section in between, and the lower detection arm and the pair of lower drive arms are coupled without the fixed section in between.Type: ApplicationFiled: December 6, 2007Publication date: June 12, 2008Applicant: TDK CORPORATIONInventors: Takao Noguchi, Kenichi Tochi, Ken Unno, Tatsuo Namikawa