Patents by Inventor Kazuo Shimokawa

Kazuo Shimokawa 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: 11923287
    Abstract: A semiconductor device includes an insulating layer, a conductive member provided inside the insulating layer, a chip disposed on a first surface of the insulating layer and connected to the conductive member, and an electrode connected to the conductive member via a barrier layer. A resistivity of the barrier layer is higher than a resistivity of the conductive member. At least a portion of the electrode protrudes from a second surface of the insulating layer.
    Type: Grant
    Filed: December 8, 2021
    Date of Patent: March 5, 2024
    Assignees: KABUSHIKI KAISHA TOSHIBA, Kioxia Corporation
    Inventors: Takayuki Tajima, Kazuo Shimokawa
  • Patent number: 11862667
    Abstract: According to an embodiment, a capacitor includes a conductive substrate, a conductive layer, and a dielectric layer. The conductive substrate has a first main surface and a second main surface and is provided with a plurality of recesses on the first main surface. The conductive substrate is further provided with a plurality of holes in one or more portions each sandwiched between two adjacent ones of the recesses such that a region on a side of the first main surface has a larger porosity than a region on a side of the second main surface. The conductive layer covers the first main surface, side walls and bottom surfaces of the recesses, and walls of the holes. The dielectric layer is interposed between the conductive substrate and the conductive layer.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: January 2, 2024
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Susumu Obata, Keiichiro Matsuo, Mitsuo Sano, Kazuhito Higuchi, Kazuo Shimokawa
  • Publication number: 20230307184
    Abstract: According to an embodiment, a capacitor includes a conductive substrate, a conductive layer, a dielectric layer therebetween, and first and second internal electrodes. The substrate has first and second main surfaces. One partial region of the first main surface is provided with first recesses. A region of the second surface corresponding to a combination of the one partial region and another partial region is provided with second recesses. The conductive layer covers the main surfaces and side walls and bottom surfaces of the recesses. The first internal electrode is provided on the one partial region and electrically connected to the conductive layer. The second internal electrode is provided on the another partial region and electrically connected to the substrate.
    Type: Application
    Filed: May 10, 2023
    Publication date: September 28, 2023
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kazuhito HIGUCHI, Kazuo SHIMOKAWA, Susumu OBATA, Mitsuo SANO
  • Patent number: 11688557
    Abstract: According to an embodiment, a capacitor includes a conductive substrate, a conductive layer, a dielectric layer therebetween, and first and second internal electrodes. The substrate has first and second main surfaces. One partial region of the first main surface is provided with first recesses. A region of the second surface corresponding to a combination of the one partial region and another partial region is provided with second recesses. The conductive layer covers the main surfaces and side walls and bottom surfaces of the recesses. The first internal electrode is provided on the one partial region and electrically connected to the conductive layer. The second internal electrode is provided on the another partial region and electrically connected to the substrate.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: June 27, 2023
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kazuhito Higuchi, Kazuo Shimokawa, Susumu Obata, Mitsuo Sano
  • Patent number: 11610860
    Abstract: A wire bonding apparatus according to an embodiment bonds a wire to a bonding portion by generating an ultrasonic vibration in a state of pressing the wire onto the bonding portion. The wire bonding apparatus includes a bonding tool that causes the wire to contact the bonding portion and applies a load, an ultrasonic horn that generates the ultrasonic vibration, a load sensor that continuously detects the load applied from the bonding tool to the bonding portion, and a controller that controls the operation of the bonding tool and the ultrasonic horn. The controller analyzes data of the load output from the load sensor between when the wire contacts the bonding portion and when the ultrasonic vibration is generated, and controls the operation of the bonding tool and the ultrasonic horn based on an analysis result.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: March 21, 2023
    Assignees: KABUSHIKI KAISHA TOSHIBA, Kioxia Corporation
    Inventors: Masatoshi Tanabe, Takashi Ito, Kazuo Shimokawa, Akira Tojo
  • Patent number: 11588059
    Abstract: A structural body according to an embodiment includes a conductive substrate. A main surface of the conductive substrate includes a first region and a second region adjacent to the first region and lower in height than the first region. The first region is provided with one or more recesses having a bottom, a position of which is lower than a position of the second region. A surface region of the conductive substrate on a side of the main surface includes a porous structure at a position between the second region and the one or more recesses.
    Type: Grant
    Filed: March 15, 2021
    Date of Patent: February 21, 2023
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mitsuo Sano, Susumu Obata, Kazuhito Higuchi, Kazuo Shimokawa
  • Patent number: 11551864
    Abstract: According to one embodiment, a capacitor includes a conductive substrate, a conductive layer, a dielectric layer, and first and second external electrodes. The conductive substrate has a first main surface provided with recess(s), a second main surface, and an end face extending between edges of the first and second main surfaces. The conductive layer covers the first main surface and side walls and bottom surfaces of the recess(s). The dielectric layer is interposed between the conductive substrate and the conductive layer. The first external electrode includes a first electrode portion facing the end face and is electrically connected to the conductive layer. The second external electrode includes a second electrode portion facing the end face and is electrically connected to the conductive substrate.
    Type: Grant
    Filed: February 22, 2021
    Date of Patent: January 10, 2023
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Keiichiro Matsuo, Susumu Obata, Mitsuo Sano, Kazuhito Higuchi, Kazuo Shimokawa
  • Patent number: 11322308
    Abstract: According to an embodiment, a capacitor includes a conductive substrate, a conductive layer and a dielectric layer. The conductive substrate has a first main surface and a second main surface. The first main surface includes sub-regions. Each sub-region is provided with recesses or projections each having a shape extending in one direction and arranged in a width direction thereof. One or more of the sub-regions and another one or more of the sub-regions are different from each other in a length direction of the recesses or protrusions. The conductive layer covers sidewalls and bottom surfaces of the recesses or sidewalls and top surfaces of the projections. The dielectric layer is interposed between the conductive substrate and the conductive layer.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: May 3, 2022
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mitsuo Sano, Susumu Obata, Kazuhito Higuchi, Kazuo Shimokawa
  • Publication number: 20220102262
    Abstract: A semiconductor device includes an insulating layer, a conductive member provided inside the insulating layer, a chip disposed on a first surface of the insulating layer and connected to the conductive member, and an electrode connected to the conductive member via a barrier layer. A resistivity of the barrier layer is higher than a resistivity of the conductive member. At least a portion of the electrode protrudes from a second surface of the insulating layer.
    Type: Application
    Filed: December 8, 2021
    Publication date: March 31, 2022
    Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEMORY CORPORATION
    Inventors: Takayuki TAJIMA, Kazuo SHIMOKAWA
  • Patent number: 11270934
    Abstract: A semiconductor device includes a redistribution layer, a bump bonded to a first surface of the redistribution layer, and a chip bonded to a second surface of the redistribution layer. The redistribution layer includes an insulating layer, a conductive member connecting the bump to the chip and being provided inside the insulating layer, a bonding electrode connected between the conductive member and the bump, and a conductive layer provided between the insulating layer and the conductive member and between the bonding electrode and the conductive member. A resistivity of the conductive member is lower than a resistivity of the conductive layer.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: March 8, 2022
    Assignees: KABUSHIKI KAISHA TOSHIBA, KIOXIA CORPORATION
    Inventors: Takayuki Tajima, Kazuo Shimokawa
  • Patent number: 11227826
    Abstract: A semiconductor device includes an insulating layer, a conductive member provided inside the insulating layer, a chip disposed on a first surface of the insulating layer and connected to the conductive member, and an electrode connected to the conductive member via a barrier layer. A resistivity of the barrier layer is higher than a resistivity of the conductive member. At least a portion of the electrode protrudes from a second surface of the insulating layer.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: January 18, 2022
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA MEMORY CORPORATION
    Inventors: Takayuki Tajima, Kazuo Shimokawa
  • Publication number: 20210313194
    Abstract: A method for manufacturing a semiconductor device includes forming first and second interconnect layers on first and second substrates, respectively; adhering the first and second substrates so that the back surfaces thereof face each other; bonding first and second semiconductor chips on the first and second interconnect layers, respectively; forming first and second molded bodies on the first and second substrates, respectively, while the first and second substrates are adhered; and detaching the first and second molded bodies from the first and second substrates. The first molded body includes the first interconnect layer, the first semiconductor chip and a first resin layer covering the first semiconductor chip on the first interconnect layer. The second molded body includes the second interconnect layer, the second semiconductor chip and a second resin layer covering the second semiconductor chip on the second interconnect layer. The first and second resin layers are formed simultaneously.
    Type: Application
    Filed: March 5, 2021
    Publication date: October 7, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takayuki TAJIMA, Kazuo SHIMOKAWA
  • Publication number: 20210299648
    Abstract: According to an embodiment, a method of forming a catalyst layer includes performing displacement plating on a substrate having a surface that is made of a semiconductor and includes a plurality of projections, thereby depositing a catalytic metal at positions of the plurality of projections.
    Type: Application
    Filed: March 15, 2021
    Publication date: September 30, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Susumu OBATA, Mitsuo SANO, Keiichiro MATSUO, Kazuhito HIGUCHI, Kazuo SHIMOKAWA
  • Publication number: 20210296513
    Abstract: A structural body according to an embodiment includes a conductive substrate. A main surface of the conductive substrate includes a first region and a second region adjacent to the first region and lower in height than the first region. The first region is provided with one or more recesses having a bottom, a position of which is lower than a position of the second region. A surface region of the conductive substrate on a side of the main surface includes a porous structure at a position between the second region and the one or more recesses.
    Type: Application
    Filed: March 15, 2021
    Publication date: September 23, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mitsuo SANO, Susumu OBATA, Kazuhito HIGUCHI, Kazuo SHIMOKAWA
  • Publication number: 20210280837
    Abstract: A battery includes an electrode group including positive electrode, a negative electrode, and a current collecting tab, a clip plate, and a connection lead. The clip plate includes a first engagement part, and is attached to the current collecting tab. The connection lead includes a second engagement part engageable with the first engagement part of the clip plate, and is connected to the current collecting tab via the clip plate. Movement of the connection lead relative to the clip plate is restricted by engagement of the second engagement part with the first engagement part.
    Type: Application
    Filed: November 11, 2020
    Publication date: September 9, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takashi ITO, Takahiro AIZAWA, Kazuo SHIMOKAWA
  • Publication number: 20210280840
    Abstract: An electrode group includes a positive electrode, a negative electrode, and a current collecting tab. The current collecting tab is provided in one of the positive electrode and the negative electrode, and protrudes relative to the other of the positive electrode and the negative electrode. The current collecting tab is formed with one or more slit parts penetrating the current collecting tab in a thickness direction intersecting a protruding direction of the current collecting tab. Each of the one or more slit parts extends along a width direction intersecting both the protruding direction and the thickness direction. At each of the one or more slit parts, a circular portion is formed at at least one of the two ends in the width direction.
    Type: Application
    Filed: November 11, 2020
    Publication date: September 9, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masatoshi TANABE, Kazuo SHIMOKAWA, Takahiro AIZAWA, Takashi ITO
  • Publication number: 20210280841
    Abstract: According to an embodiment, a bundling method and a bundling apparatus of a plurality of band-shaped parts of a current collecting tab in an electrode group, in which the current collecting tab projects, are provided. In the bundling method and apparatus, the current collecting tab is deformed by moving a bundling tool, with the bundling tool being abutted to the current collecting tab from an outer side in a lamination direction of a plurality of band-shaped parts. At this time, the bundling tool is moved so that a moving direction of the bundling tool is inclined with respect to the lamination direction of the plurality of band-shaped parts, toward a side opposite to a side where the current collecting tab projects.
    Type: Application
    Filed: November 11, 2020
    Publication date: September 9, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takahiro AIZAWA, Kazuo SHIMOKAWA, Takashi ITO, Masatoshi TANABE
  • Publication number: 20210217626
    Abstract: According to an embodiment, a method of forming a porous layer includes forming a porous layer containing a noble metal on a surface made of a semiconductor by displacement plating. The plating solution used in the displacement plating contains a noble metal source, hydrogen fluoride, and an adjusting agent adjusting a pH value or zeta potential. The noble metal source produces an ion containing the noble metal in water. The plating solution has a pH value in a range of 1 to 6.
    Type: Application
    Filed: March 29, 2021
    Publication date: July 15, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mitsuo SANO, Keiichiro MATSUO, Susumu OBATA, Kazuhito HIGUCHI, Kazuo SHIMOKAWA
  • Publication number: 20210175011
    Abstract: According to one embodiment, a capacitor includes a conductive substrate, a conductive layer, a dielectric layer, and first and second external electrodes. The conductive substrate has a first main surface provided with recess(s), a second main surface, and an end face extending between edges of the first and second main surfaces. The conductive layer covers the first main surface and side walls and bottom surfaces of the recess(s). The dielectric layer is interposed between the conductive substrate and the conductive layer. The first external electrode includes a first electrode portion facing the end face and is electrically connected to the conductive layer. The second external electrode includes a second electrode portion facing the end face and is electrically connected to the conductive substrate.
    Type: Application
    Filed: February 22, 2021
    Publication date: June 10, 2021
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Keiichiro MATSUO, Susumu OBATA, Mitsuo SANO, Kazuhito HIGUCHI, Kazuo SHIMOKAWA
  • Patent number: 10991590
    Abstract: According to an embodiment, a method of forming a porous layer includes forming a porous layer containing a noble metal on a surface made of a semiconductor by displacement plating. The plating solution used in the displacement plating contains a noble metal source, hydrogen fluoride, and an adjusting agent adjusting a pH value or zeta potential. The noble metal source produces an ion containing the noble metal in water. The plating solution has a pH value in a range of 1 to 6.
    Type: Grant
    Filed: March 20, 2019
    Date of Patent: April 27, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Mitsuo Sano, Keiichiro Matsuo, Susumu Obata, Kazuhito Higuchi, Kazuo Shimokawa