Patents by Inventor Kazuyuki Higashi
Kazuyuki Higashi 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: 20240321789Abstract: A bonding-type interconnection member includes a first substrate; a first interconnection portion stacked on the first substrate and including a first insulating layer, a first interconnection layer, and a first connection hole reaching the first interconnection layer; a second substrate facing the first interconnection portion in a first direction; a bonding metal portion provided between the first connection hole and the second substrate; a first conductive film provided in the first connection hole and in contact with the first interconnection layer on a bottom surface of the first connection hole; and a second conductive film provided between the first conductive film and the bonding metal portion, and in contact with the first conductive film and the bonding metal portion. The first conductive film is made of a material different from a material of the second conductive film and a material of the bonding metal portion.Type: ApplicationFiled: August 29, 2023Publication date: September 26, 2024Inventors: Kazuyuki HIGASHI, Kei OBARA, Kazumichi TSUMURA
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Publication number: 20240321662Abstract: An electronic component includes: a first substrate having a first surface with a first region and a second region, a plurality of first bumps provided in the first region, and zero or one or more second bumps provided in the second region, the number of second bumps being smaller than the number of first bumps; and a second substrate having a second surface with a third region facing the first surface and the first region and a fourth region facing the second region, a plurality of third bumps provided in the third region and in contact with the first bumps, zero or one or more fourth bumps provided in the fourth region and in contact with the second bumps, a third surface provided on a side opposite to the third region and having a first distance from the second surface, and a fourth surface provided on a side opposite to the fourth region and having a second distance from the second surface shorter than the first distance, the number of fourth bumps being smaller than the number of third bumps.Type: ApplicationFiled: August 22, 2023Publication date: September 26, 2024Inventors: Yutaka ONOZUKA, Tomohiro SAITO, Kazuyuki HIGASHI, Kazumichi TSUMURA
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Patent number: 12089409Abstract: According to one embodiment, a semiconductor memory device includes a first memory chip, a circuit chip, and an external connection electrode on a surface of the first memory chip. The first memory chip comprises first conductors stacked via an insulator, and a first pillar passing the first conductors. The circuit chip comprises a substrate, a control circuit, and a second conductor connected to the control circuit, the circuit chip being attached to the first memory chip. The external connection electrode comprises a portion extending from a side of the surface of the first memory chip through the first memory chip and connected to the second conductor. Part of the first conductors is between the external connection electrode and the substrate.Type: GrantFiled: June 22, 2023Date of Patent: September 10, 2024Assignee: KIOXIA CORPORATIONInventors: Masayoshi Tagami, Jun Iijima, Ryota Katsumata, Kazuyuki Higashi
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Publication number: 20230345726Abstract: According to one embodiment, a semiconductor memory device includes a first memory chip, a circuit chip, and an external connection electrode on a surface of the first memory chip. The first memory chip comprises first conductors stacked via an insulator, and a first pillar passing the first conductors. The circuit chip comprises a substrate, a control circuit, and a second conductor connected to the control circuit, the circuit chip being attached to the first memory chip. The external connection electrode comprises a portion extending from a side of the surface of the first memory chip through the first memory chip and connected to the second conductor. Part of the first conductors is between the external connection electrode and the substrate.Type: ApplicationFiled: June 22, 2023Publication date: October 26, 2023Applicant: KIOXIA CORPORATIONInventors: Masayoshi TAGAMI, Jun IIJIMA, Ryota KATSUMATA, Kazuyuki HIGASHI
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Patent number: 11729973Abstract: According to one embodiment, a semiconductor memory device includes a first memory chip, a circuit chip, and an external connection electrode on a surface of the first memory chip. The first memory chip comprises first conductors stacked via an insulator, and a first pillar passing the first conductors. The circuit chip comprises a substrate, a control circuit, and a second conductor connected to the control circuit, the circuit chip being attached to the first memory chip. The external connection electrode comprises a portion extending from a side of the surface of the first memory chip through the first memory chip and connected to the second conductor. Part of the first conductors is between the external connection electrode and the substrate.Type: GrantFiled: January 28, 2021Date of Patent: August 15, 2023Assignee: KIOXIA CORPORATIONInventors: Masayoshi Tagami, Jun Iijima, Ryota Katsumata, Kazuyuki Higashi
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Patent number: 11721520Abstract: A semiconductor device according to an embodiment includes: a substrate including a plurality of through holes provided at predetermined intervals along a first direction in a substrate surface and along a second direction intersecting the first direction in the substrate surface; an insulating layer provided on the substrate, the insulating layer being penetrated by the through holes; a plurality of first electrodes provided on the insulating layer, the first electrodes being adjacent to the respective through holes in the first direction; a plurality of second electrodes provided on the insulating layer, the second electrodes being adjacent to the respective through holes in the first direction, the second electrodes being provided to face the first electrodes, the second electrodes being held at a predetermined potential; and a wiring layer provided on the insulating layer, the wiring layer electrically connecting the adjacent second electrodes.Type: GrantFiled: January 21, 2022Date of Patent: August 8, 2023Assignee: NuFlare Technology, Inc.Inventors: Kei Obara, Kazuyuki Higashi, Miyoko Shimada, Yoshiaki Shimooka, Hitomi Yamaguchi, Yoshikuni Goshima, Hirofumi Morita, Hiroshi Matsumoto
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Publication number: 20220270850Abstract: A semiconductor device according to an embodiment includes: a substrate including a plurality of through holes provided at predetermined intervals along a first direction in a substrate surface and along a second direction intersecting the first direction in the substrate surface; an insulating layer provided on the substrate, the insulating layer being penetrated by the through holes; a plurality of first electrodes provided on the insulating layer, the first electrodes being adjacent to the respective through holes in the first direction; a plurality of second electrodes provided on the insulating layer, the second electrodes being adjacent to the respective through holes in the first direction, the second electrodes being provided to face the first electrodes, the second electrodes being held at a predetermined potential; and a wiring layer provided on the insulating layer, the wiring layer electrically connecting the adjacent second electrodes.Type: ApplicationFiled: January 21, 2022Publication date: August 25, 2022Applicant: NuFlare Technology, Inc.Inventors: Kei OBARA, Kazuyuki HIGASHI, Miyoko SHIMADA, Yoshiaki SHIMOOKA, Hitomi YAMAGUCHI, Yoshikuni GOSHIMA, Hirofumi MORITA, Hiroshi MATSUMOTO
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Publication number: 20210151465Abstract: According to one embodiment, a semiconductor memory device includes a first memory chip, a circuit chip, and an external connection electrode on a surface of the first memory chip. The first memory chip comprises first conductors stacked via an insulator, and a first pillar passing the first conductors. The circuit chip comprises a substrate, a control circuit, and a second conductor connected to the control circuit, the circuit chip being attached to the first memory chip. The external connection electrode comprises a portion extending from a side of the surface of the first memory chip through the first memory chip and connected to the second conductor. Part of the first conductors is between the external connection electrode and the substrate.Type: ApplicationFiled: January 28, 2021Publication date: May 20, 2021Applicant: Toshiba Memory CorporationInventors: Masayoshi TAGAMI, Jun IIJIMA, Ryota KATSUMATA, Kazuyuki HIGASHI
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Patent number: 10950630Abstract: According to one embodiment, a semiconductor memory device includes a first memory chip, a circuit chip, and an external connection electrode on a surface of the first memory chip. The first memory chip comprises first conductors stacked via an insulator, and a first pillar passing the first conductors. The circuit chip comprises a substrate, a control circuit, and a second conductor connected to the control circuit, the circuit chip being attached to the first memory chip. The external connection electrode comprises a portion extending from a side of the surface of the first memory chip through the first memory chip and connected to the second conductor. Part of the first conductors is between the external connection electrode and the substrate.Type: GrantFiled: July 13, 2020Date of Patent: March 16, 2021Assignee: Toshiba Memory CorporationInventors: Masayoshi Tagami, Jun Iijima, Ryota Katsumata, Kazuyuki Higashi
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Publication number: 20200343263Abstract: According to one embodiment, a semiconductor memory device includes a first memory chip, a circuit chip, and an external connection electrode on a surface of the first memory chip. The first memory chip comprises first conductors stacked via an insulator, and a first pillar passing the first conductors. The circuit chip comprises a substrate, a control circuit, and a second conductor connected to the control circuit, the circuit chip being attached to the first memory chip. The external connection electrode comprises a portion extending from a side of the surface of the first memory chip through the first memory chip and connected to the second conductor. Part of the first conductors is between the external connection electrode and the substrate.Type: ApplicationFiled: July 13, 2020Publication date: October 29, 2020Applicant: Toshiba Memory CorporationInventors: Masayoshi TAGAMI, Jun Iijima, Ryota Katsumata, Kazuyuki Higashi
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Patent number: 10748928Abstract: According to one embodiment, a semiconductor memory device includes a first memory chip, a circuit chip, and an external connection electrode on a surface of the first memory chip. The first memory chip comprises first conductors stacked via an insulator, and a first pillar passing the first conductors. The circuit chip comprises a substrate, a control circuit, and a second conductor connected to the control circuit, the circuit chip being attached to the first memory chip. The external connection electrode comprises a portion extending from a side of the surface of the first memory chip through the first memory chip and connected to the second conductor. Part of the first conductors is between the external connection electrode and the substrate.Type: GrantFiled: December 9, 2019Date of Patent: August 18, 2020Assignee: Toshiba Memory CorporationInventors: Masayoshi Tagami, Jun Iijima, Ryota Katsumata, Kazuyuki Higashi
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Publication number: 20200111810Abstract: According to one embodiment, a semiconductor memory device includes a first memory chip, a circuit chip, and an external connection electrode on a surface of the first memory chip. The first memory chip comprises first conductors stacked via an insulator, and a first pillar passing the first conductors. The circuit chip comprises a substrate, a control circuit, and a second conductor connected to the control circuit, the circuit chip being attached to the first memory chip. The external connection electrode comprises a portion extending from a side of the surface of the first memory chip through the first memory chip and connected to the second conductor.Type: ApplicationFiled: December 9, 2019Publication date: April 9, 2020Applicant: Toshiba Memory CorporationInventors: Masayoshi TAGAMI, Jun Iijima, Ryota Katsumata, Kazuyuki Higashi
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Patent number: 10553612Abstract: According to one embodiment, a semiconductor memory device includes a first memory chip, a circuit chip, and an external connection electrode on a surface of the first memory chip. The first memory chip comprises first conductors stacked via an insulator, and a first pillar passing the first conductors. The circuit chip comprises a substrate, a control circuit, and a second conductor connected to the control circuit, the circuit chip being attached to the first memory chip. The external connection electrode comprises a portion extending from a side of the surface of the first memory chip through the first memory chip and connected to the second conductor. Part of the first conductors is between the external connection electrode and the substrate.Type: GrantFiled: July 2, 2019Date of Patent: February 4, 2020Assignee: Toshiba Memory CorporationInventors: Masayoshi Tagami, Jun Iijima, Ryota Katsumata, Kazuyuki Higashi
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Publication number: 20190326322Abstract: According to one embodiment, a semiconductor memory device includes a first memory chip, a circuit chip, and an external connection electrode on a surface of the first memory chip. The first memory chip comprises first conductors stacked via an insulator, and a first pillar passing the first conductors. The circuit chip comprises a substrate, a control circuit, and a second conductor connected to the control circuit, the circuit chip being attached to the first memory chip. The external connection electrode comprises a portion extending from a side of the surface of the first memory chip through the first memory chip and connected to the second conductor. Part of the first conductors is between the external connection electrode and the substrate.Type: ApplicationFiled: July 2, 2019Publication date: October 24, 2019Applicant: Toshiba Memory CorporationInventors: Masayoshi TAGAMI, Jun IIJIMA, Ryota KATSUMATA, Kazuyuki HIGASHI
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Patent number: 10381374Abstract: According to one embodiment, a semiconductor memory device includes a first memory chip, a circuit chip, and an external connection electrode on a surface of the first memory chip. The first memory chip comprises first conductors stacked via an insulator, and a first pillar passing the first conductors. The circuit chip comprises a substrate, a control circuit, and a second conductor connected to the control circuit, the circuit chip being attached to the first memory chip. The external connection electrode comprises a portion extending from a side of the surface of the first memory chip through the first memory chip and connected to the second conductor. Part of the first conductors is between the external connection electrode and the substrate.Type: GrantFiled: March 5, 2018Date of Patent: August 13, 2019Assignee: Toshiba Memory CorporationInventors: Masayoshi Tagami, Jun Iijima, Ryota Katsumata, Kazuyuki Higashi
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Publication number: 20190088676Abstract: According to one embodiment, a semiconductor memory device includes a first memory chip, a circuit chip, and an external connection electrode on a surface of the first memory chip. The first memory chip comprises first conductors stacked via an insulator, and a first pillar passing the first conductors. The circuit chip comprises a substrate, a control circuit, and a second conductor connected to the control circuit, the circuit chip being attached to the first memory chip. The external connection electrode comprises a portion extending from a side of the surface of the first memory chip through the first memory chip and connected to the second conductor. Part of the first conductors is between the external connection electrode and the substrate.Type: ApplicationFiled: March 5, 2018Publication date: March 21, 2019Applicant: Toshiba Memory CorporationInventors: Masayoshi TAGAMI, Jun IIJIMA, Ryota KATSUMATA, Kazuyuki HIGASHI
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Publication number: 20190088618Abstract: A method of manufacturing a semiconductor device includes forming a first metal film on a first insulating region and a first metal region directly adjacent to the first insulating region, wherein the first metal film comprises a metal other than the metal of the first metal region, forming a second metal film on a second insulating region and a second metal region directly adjacent to the second insulating region, wherein the second metal film comprises a metal other than the metal of the second metal region, bringing the first metal film and the second metal film into contact with each other, and heat treating the first substrate and the second substrate and thereby electrically connecting the first metal region and the second metal region to each other and simultaneously forming an insulating interface film between the first insulating region and the second insulating region.Type: ApplicationFiled: February 26, 2018Publication date: March 21, 2019Inventors: Kazumichi TSUMURA, Kazuyuki HIGASHI
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Patent number: 10083893Abstract: According to an embodiment, a semiconductor device is provided. The semiconductor device includes a through-hole, a copper layer, and a metal portion. The through-hole penetrates a semiconductor substrate between front and rear sides. The copper layer is formed inside the through-hole. The metal portion is made of a metal other than copper, formed closer to a hole core side of the through-hole than the copper layer is, and involves a void therein.Type: GrantFiled: September 10, 2014Date of Patent: September 25, 2018Assignee: TOSHIBA MEMORY CORPORATIONInventors: Koji Ogiso, Kazuyuki Higashi, Tatsuo Migita
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Publication number: 20180261623Abstract: A semiconductor memory device includes a first memory cell array layer includes a first memory cell array region, in which memory cells are 3-dimensionally arrayed, and a first and second surface wiring layer connected to the memory cells. A second memory cell array layer includes second memory cell array region, in which memory cells are 3-dimensionally arrayed, and a third and fourth surface wiring layer connected to the second plurality of memory cells. The first memory cell array layer and the second memory cell array layer are bonded to each other such that the second surface wiring layer and the third surface wiring layer face each other and are bonded to each other. The first and second memory cell array regions overlap each other as viewed from a direction orthogonal to a layer plane.Type: ApplicationFiled: August 28, 2017Publication date: September 13, 2018Inventors: Kazuyuki HIGASHI, Kazumichi TSUMURA, Ryota KATSUMATA, Fumitaka ARAI
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Patent number: 10074667Abstract: A semiconductor memory device includes a first memory cell array layer includes a first memory cell array region, in which memory cells are 3-dimensionally arrayed, and a first and second surface wiring layer connected to the memory cells. A second memory cell array layer includes second memory cell array region, in which memory cells are 3-dimensionally arrayed, and a third and fourth surface wiring layer connected to the second plurality of memory cells. The first memory cell array layer and the second memory cell array layer are bonded to each other such that the second surface wiring layer and the third surface wiring layer face each other and are bonded to each other. The first and second memory cell array regions overlap each other as viewed from a direction orthogonal to a layer plane.Type: GrantFiled: August 28, 2017Date of Patent: September 11, 2018Assignee: Toshiba Memory CorporationInventors: Kazuyuki Higashi, Kazumichi Tsumura, Ryota Katsumata, Fumitaka Arai