Patents by Inventor Kan Shimizu

Kan Shimizu 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).

  • Patent number: 10593405
    Abstract: According to one embodiment, a semiconductor memory device includes: a word line; a first memory cell; a first circuit; and a second circuit. The first memory cell is connected to the word line. The first circuit generates a first voltage having a waveform including a first time period during which a voltage value increases with time and a second time period during which the voltage value decreases with time, and applies the generated first voltage to the word line. The second circuit measures first time from a first timing when a state of the first memory cell changes according to the first voltage to a second timing when the state of the first memory cell changes according to the first voltage after the first timing. The second circuit determines first data stored in the first memory cell on the basis of the measured first time.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: March 17, 2020
    Assignee: Toshiba Memory Corporation
    Inventors: Ryuichi Fujimoto, Kan Shimizu, Shigehito Saigusa, Motoki Nagata, Yumi Takada, Hitoshi Shiga, Makoto Morimoto
  • Patent number: 10586823
    Abstract: It is possible to reduce resistance variations of a member connecting a through-silicon via to a line and improve wiring reliability. A hole through which the through-silicon via is to be stretched is created and an over-etching process is carried out on a wiring layer including the line. Then, by embedding copper in the hole, the through-silicon via made of the copper can be created. After the through-silicon via has been connected to the line made of aluminum through the member which is a connection area, the connection area is alloyed in a thermal treatment in order to electrically connect the through-silicon via to the line. Thus, it is possible to reduce variations of a resistance between the through-silicon via and the line and also improve wiring reliability as well. The present technology can be applied to a semiconductor device and a method for manufacturing the semiconductor device.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: March 10, 2020
    Assignee: SONY CORPORATION
    Inventors: Kan Shimizu, Keishi Inoue
  • Patent number: 10504967
    Abstract: A light emitting element and display device are disclosed. In one example, a light emitting element includes a first electrode formed on a base body. A first insulation layer is formed on the base body and the first electrode and has an aperture portion in which a part of the first electrode is exposed. A second insulation layer is formed on the first insulation layer and has a protruding end portion protruding from the aperture portion. A third insulation layer is formed on the second insulation layer and has an end portion recessed from the protruding end portion. A charge injection/transport layer is formed over the second insulation layer and the third insulation layer. An organic layer includes a light emitting layer, and a second electrode formed on the organic layer. At least a part of the charge injection/transport layer is discontinuous at the protruding end portion.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: December 10, 2019
    Assignee: Sony Corporation
    Inventor: Kan Shimizu
  • Publication number: 20190326344
    Abstract: There is provided semiconductor devices and methods of forming the same, the semiconductor devices including: a first semiconductor element having a first electrode; a second semiconductor element having a second electrode; a Sn-based micro-solder bump formed on the second electrode; and a concave bump pad including the first electrode opposite to the micro-solder bump, where the first electrode is connected to the second electrode via the micro-solder bump and the concave bump pad.
    Type: Application
    Filed: July 3, 2019
    Publication date: October 24, 2019
    Applicant: Sony Corporation
    Inventors: Satoru WAKIYAMA, Naoki JYO, Kan SHIMIZU, Toshihiko HAYASHI, Takuya NAKAMURA
  • Publication number: 20190295649
    Abstract: According to one embodiment, a semiconductor memory device includes: a word line; a first memory cell; a first circuit; and a second circuit. The first memory cell is connected to the word line. The first circuit generates a first voltage having a waveform including a first time period during which a voltage value increases with time and a second time period during which the voltage value decreases with time, and applies the generated first voltage to the word line. The second circuit measures first time from a first timing when a state of the first memory cell changes according to the first voltage to a second timing when the state of the first memory cell changes according to the first voltage after the first timing. The second circuit determines first data stored in the first memory cell on the basis of the measured first time.
    Type: Application
    Filed: August 13, 2018
    Publication date: September 26, 2019
    Applicant: Toshiba Memory Corporation
    Inventors: Ryuichi FUJIMOTO, Kan SHIMIZU, Shigehito SAIGUSA, Motoki NAGATA, Yumi TAKADA, Hitoshi SHIGA, Makoto MORIMOTO
  • Publication number: 20190148463
    Abstract: A light emitting element and display device are disclosed. In one example, a light emitting element includes a first electrode formed on a base body. A first insulation layer is formed on the base body and the first electrode and has an aperture portion in which a part of the first electrode is exposed. A second insulation layer is formed on the first insulation layer and has a protruding end portion protruding from the aperture portion. A third insulation layer is formed on the second insulation layer and has an end portion recessed from the protruding end portion. A charge injection/transport layer is formed over the second insulation layer and the third insulation layer. An organic layer includes a light emitting layer, and a second electrode formed on the organic layer. At least a part of the charge injection/transport layer is discontinuous at the protruding end portion.
    Type: Application
    Filed: December 14, 2018
    Publication date: May 16, 2019
    Inventor: Kan Shimizu
  • Patent number: 10199435
    Abstract: A light emitting element and display device are disclosed. In one example, a light emitting element includes a first electrode formed on a base body. A first insulation layer is formed on the base body and the first electrode and has an aperture portion in which a part of the first electrode is exposed. A second insulation layer is formed on the first insulation layer and has a protruding end portion protruding from the aperture portion. A third insulation layer is formed on the second insulation layer and has an end portion recessed from the protruding end portion. A charge injection/transport layer is formed over the second insulation layer and the third insulation layer. An organic layer includes a light emitting layer, and a second electrode formed on the organic layer. At least a part of the charge injection/transport layer is discontinuous at the protruding end portion.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: February 5, 2019
    Assignee: Sony Corporation
    Inventor: Kan Shimizu
  • Publication number: 20180308891
    Abstract: An imaging device includes a first semiconductor element including at least one bump pad that has a concave shape. The at least one bump pad includes a first metal layer and a second metal layer on the first metal layer. The imaging device includes a second semiconductor element including at least one electrode. The imaging device includes a microbump electrically connecting the at least one bump pad to the at least one electrode. The microbump includes a diffused portion of the second metal layer, and first semiconductor element or the second semiconductor element includes a pixel unit.
    Type: Application
    Filed: October 7, 2016
    Publication date: October 25, 2018
    Applicant: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
    Inventors: Satoru WAKIYAMA, Kan SHIMIZU, Toshihiko HAYASHI, Takuya NAKAMURA, Naoki JYO
  • Publication number: 20180145115
    Abstract: A light emitting element and display device are disclosed. In one example, a light emitting element includes a first electrode formed on a base body. A first insulation layer is formed on the base body and the first electrode and has an aperture portion in which a part of the first electrode is exposed. A second insulation layer is formed on the first insulation layer and has a protruding end portion protruding from the aperture portion. A third insulation layer is formed on the second insulation layer and has an end portion recessed from the protruding end portion. A charge injection/transport layer is formed over the second insulation layer and the third insulation layer. An organic layer includes a light emitting layer, and a second electrode formed on the organic layer. At least a part of the charge injection/transport layer is discontinuous at the protruding end portion.
    Type: Application
    Filed: March 18, 2016
    Publication date: May 24, 2018
    Inventor: Kan Shimizu
  • Publication number: 20180130842
    Abstract: It is possible to reduce resistance variations of a member connecting a through-silicon via to a line and improve wiring reliability. A hole through which the through-silicon via is to be stretched is created and an over-etching process is carried out on a wiring layer including the line. Then, by embedding copper in the hole, the through-silicon via made of the copper can be created. After the through-silicon via has been connected to the line made of aluminum through the member which is a connection area, the connection area is alloyed in a thermal treatment in order to electrically connect the through-silicon via to the line. Thus, it is possible to reduce variations of a resistance between the through-silicon via and the line and also improve wiring reliability as well. The present technology can be applied to a semiconductor device and a method for manufacturing the semiconductor device.
    Type: Application
    Filed: January 4, 2018
    Publication date: May 10, 2018
    Inventors: Kan Shimizu, Keishi Inoue
  • Patent number: 9865639
    Abstract: It is possible to reduce resistance variations of a member connecting a through-silicon via to a line and improve wiring reliability. A hole through which the through-silicon via is to be stretched is created and an over-etching process is carried out on a wiring layer including the line. Then, by embedding copper in the hole, the through-silicon via made of the copper can be created. After the through-silicon via has been connected to the line made of aluminum through the member which is a connection area, the connection area is alloyed in a thermal treatment in order to electrically connect the through-silicon via to the line. Thus, it is possible to reduce variations of a resistance between the through-silicon via and the line and also improve wiring reliability as well. The present technology can be applied to a semiconductor device and a method for manufacturing the semiconductor device.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: January 9, 2018
    Assignee: Sony Corporation
    Inventors: Kan Shimizu, Keishi Inoue
  • Publication number: 20170053960
    Abstract: There is provided semiconductor devices and methods of forming the same, the semiconductor devices including: a first semiconductor element having a first electrode; a second semiconductor element having a second electrode; a Sn-based micro-solder bump formed on the second electrode; and a concave bump pad including the first electrode opposite to the micro-solder bump, where the first electrode is connected to the second electrode via the micro-solder bump and the concave bump pad.
    Type: Application
    Filed: April 15, 2015
    Publication date: February 23, 2017
    Applicant: Sony Corporation
    Inventors: Satoru WAKIYAMA, Naoki JYO, Kan SHIMIZU, Toshihiko HAYASHI, Takuya NAKAMURA
  • Publication number: 20160181303
    Abstract: It is possible to reduce resistance variations of a member connecting a through-silicon via to a line and improve wiring reliability. A hole through which the through-silicon via is to be stretched is created and an over-etching process is carried out on a wiring layer including the line. Then, by embedding copper in the hole, the through-silicon via made of the copper can be created. After the through-silicon via has been connected to the line made of aluminum through the member which is a connection area, the connection area is alloyed in a thermal treatment in order to electrically connect the through-silicon via to the line. Thus, it is possible to reduce variations of a resistance between the through-silicon via and the line and also improve wiring reliability as well. The present technology can be applied to a semiconductor device and a method for manufacturing the semiconductor device.
    Type: Application
    Filed: March 1, 2016
    Publication date: June 23, 2016
    Inventors: Kan Shimizu, Keishi Inoue
  • Patent number: 9287311
    Abstract: It is possible to reduce resistance variations of a member connecting a through-silicon via to a line and improve wiring reliability. A hole through which the through-silicon via is to be stretched is created and an over-etching process is carried out on a wiring layer including the line. Then, by embedding copper in the hole, the through-silicon via made of the copper can be created. After the through-silicon via has been connected to the line made of aluminum through the member which is a connection area, the connection area is alloyed in a thermal treatment in order to electrically connect the through-silicon via to the line. Thus, it is possible to reduce variations of a resistance between the through-silicon via and the line and also improve wiring reliability as well. The present technology can be applied to a semiconductor device and a method for manufacturing the semiconductor device.
    Type: Grant
    Filed: August 16, 2012
    Date of Patent: March 15, 2016
    Assignee: SONY CORPORATION
    Inventors: Kan Shimizu, Keishi Inoue
  • Publication number: 20140240050
    Abstract: A power circuit includes a bridge circuit connected to a first node by which an output voltage is supplied to a load circuit including an amplifier containing a CMOS inverter, and configured to generate a current flowing in a first current channel and a current flowing in a second current channel in accordance with a voltage difference between the output voltage and a predetermined set voltage to be supplied to the load circuit, and a current amplifier configured to generate a current flowing in a third current channel to the load circuit in accordance with an input source voltage and a difference between the current flowing in the first current channel and the current flowing in the second current channel. The predetermined set voltage that is supplied to the load circuit achieves the smallest transconductance during normal operation of the amplifier.
    Type: Application
    Filed: February 5, 2014
    Publication date: August 28, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Kan SHIMIZU
  • Publication number: 20130082341
    Abstract: It is possible to reduce resistance variations of a member connecting a through-silicon via to a line and improve wiring reliability. A hole through which the through-silicon via is to be stretched is created and an over-etching process is carried out on a wiring layer including the line. Then, by embedding copper in the hole, the through-silicon via made of the copper can be created. After the through-silicon via has been connected to the line made of aluminum through the member which is a connection area, the connection area is alloyed in a thermal treatment in order to electrically connect the through-silicon via to the line. Thus, it is possible to reduce variations of a resistance between the through-silicon via and the line and also improve wiring reliability as well. The present technology can be applied to a semiconductor device and a method for manufacturing the semiconductor device.
    Type: Application
    Filed: August 16, 2012
    Publication date: April 4, 2013
    Applicant: SONY CORPORATION
    Inventors: Kan SHIMIZU, Keishi INOUE
  • Patent number: 7944255
    Abstract: A CMOS bias circuit includes a starter circuits and a started circuit part which supplies a current to the outside. The starter circuits has a connection node (first terminal) between it and the started circuit part. The starter circuits includes a first MOS transistor connected at its drain to the first terminal, a first current supply circuit which supplies a starter current to the started circuit via the first MOS transistor, and a circuit which supplies a second current in a direction that interrupts a current flowing through the first MOS transistor to a node between the first MOS transistor and the first current supply circuit in accordance with a potential at the first terminal. The starter circuits has a function of preventing a current flowing between the drain and source of the first MOS transistor in the opposite direction by increasing or decreasing a gate bias of the first MOS transistor in accordance with a value of the second current.
    Type: Grant
    Filed: September 21, 2009
    Date of Patent: May 17, 2011
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kan Shimizu
  • Publication number: 20100231289
    Abstract: A CMOS bias circuit includes a starter circuits and a started circuit part which supplies a current to the outside. The starter circuits has a connection node (first terminal) between it and the started circuit part. The starter circuits includes a first MOS transistor connected at its drain to the first terminal, a first current supply circuit which supplies a starter current to the started circuit via the first MOS transistor, and a circuit which supplies a second current in a direction that interrupts a current flowing through the first MOS transistor to a node between the first MOS transistor and the first current supply circuit in accordance with a potential at the first terminal. The starter circuits has a function of preventing a current flowing between the drain and source of the first MOS transistor in the opposite direction by increasing or decreasing a gate bias of the first MOS transistor in accordance with a value of the second current.
    Type: Application
    Filed: September 21, 2009
    Publication date: September 16, 2010
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventor: Kan Shimizu
  • Patent number: 7355469
    Abstract: A resistor element is inserted between an output terminal of an output transistor and an output terminal of a regulator circuit. A signal, which is taken out of a connection node between the output terminal of the output transistor and the resistor element, is used for phase compensation. Thereby, oscillation is prevented from being caused by a phase delay due to a capacitive load which is connected to the output of the regulator circuit.
    Type: Grant
    Filed: July 3, 2006
    Date of Patent: April 8, 2008
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kan Shimizu
  • Publication number: 20070001656
    Abstract: A resistor element is inserted between an output terminal of an output transistor and an output terminal of a regulator circuit. A signal, which is taken out of a connection node between the output terminal of the output transistor and the resistor element, is used for phase compensation. Thereby, oscillation is prevented from being caused by a phase delay due to a capacitive load which is connected to the output of the regulator circuit.
    Type: Application
    Filed: July 3, 2006
    Publication date: January 4, 2007
    Inventor: Kan Shimizu