Patents by Inventor Shinya Arai

Shinya Arai 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: 11956959
    Abstract: A semiconductor memory device includes a semiconductor substrate including a diode formed in an upper layer portion of the semiconductor substrate, a first insulating film provided above the semiconductor substrate, a first conductive film provided above the first insulating film and coupled to the diode, a stacked body provided above the first conductive film, an insulator and an electrode film being stacked alternately in the stacked body, a semiconductor member piercing the stacked body and being connected to the first conductive film, and a charge storage member provided between the electrode film and the semiconductor member.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: April 9, 2024
    Assignee: Kioxia Corporation
    Inventors: Jun Fujiki, Shinya Arai, Kotaro Fujii
  • Patent number: 11910608
    Abstract: According to one embodiment, a source layer includes a semiconductor layer including an impurity. A stacked body includes a plurality of electrode layers stacked with an insulator interposed. A gate layer is provided between the source layer and the stacked body. The gate layer is thicker than a thickness of one layer of the electrode layers. A semiconductor body extends in a stacking direction of the stacked body through the stacked body and the gate layer. The semiconductor body further extends in the semiconductor layer where a side wall portion of the semiconductor body contacts the semiconductor layer. The semiconductor body does not contact the electrode layers and the gate layer.
    Type: Grant
    Filed: October 7, 2022
    Date of Patent: February 20, 2024
    Assignee: Kioxia Corporation
    Inventor: Shinya Arai
  • Publication number: 20230411328
    Abstract: According to an embodiment, a semiconductor device includes a first chip including a substrate, and a second chip bonded to the first chip at a first surface. Each of the first chip and the second chip includes an element region, and an end region including a chip end portion. The first chip includes a plurality of first electrodes that are arranged on the first surface in the end region and are in an electrically uncoupled state. The second chip includes a plurality of second electrodes that are arranged on the first surface in the end region, are in an electrically uncoupled state, and are respectively in contact with the first electrodes.
    Type: Application
    Filed: November 30, 2022
    Publication date: December 21, 2023
    Applicant: Kioxia Corporation
    Inventors: Shinya ARAI, Yuta TAGUCHI
  • Publication number: 20230413562
    Abstract: A semiconductor memory device according to an embodiment comprises: a semiconductor substrate; a stacked body having a plurality of first insulating layers and conductive layers stacked alternately on the semiconductor substrate; a columnar semiconductor layer contacting the semiconductor substrate in the stacked body being provided extending in a stacking direction of the stacked body and including a first portion and a second portion which is provided above the first portion; a memory layer provided on a side surface of the columnar semiconductor layer facing the stacked conductive layers and extending, along the columnar semiconductor layer; and a second insulating layer provided between one of the first insulating layer and the conductive layers of the stacked body.
    Type: Application
    Filed: July 28, 2023
    Publication date: December 21, 2023
    Applicant: KIOXIA CORPORATION
    Inventor: Shinya ARAI
  • Publication number: 20230403857
    Abstract: According to one embodiment, a semiconductor memory device includes a substrate; an insulating layer provided on the substrate; a conductive layer provided on the insulating layer; a stacked body provided on the conductive layer and including a plurality of electrode layers and a plurality of insulating layers respectively provided among the plurality of electrode layers; a columnar section piercing through the stacked body to reach the conductive layer and extending in a first direction in which the stacked body is stacked; and a source layer. The columnar section includes a channel body and a charge storage film provided between the channel body and the respective electrode layers. The conductive layer includes a first film having electric conductivity and in contact with the lower end portion of the channel body; and an air gap provided to be covered by the first film.
    Type: Application
    Filed: August 28, 2023
    Publication date: December 14, 2023
    Applicant: KIOXIA CORPORATION
    Inventor: Shinya ARAI
  • Publication number: 20230363167
    Abstract: A semiconductor memory device includes a connecting member including a semiconductor material, a first electrode film, a first insulating film, a stacked body and three or more semiconductor pillars. The stacked body includes second electrode films and second insulating films that alternately stacked. The semiconductor pillars are arrayed along two or more directions, extend in a stacking direction, pierce through the stacked body and the first insulating film, and are connected to the connecting member. The device includes a third insulating film provided between the semiconductor pillars and the stacked body and between the connecting member and the first electrode film. A charge storage layer is provided at least between one of the second electrode films and the third insulating film.
    Type: Application
    Filed: July 7, 2023
    Publication date: November 9, 2023
    Applicant: Kioxia Corporation
    Inventors: Yoshiaki FUKUZUMI, Shinya ARAI, Masaki TSUJI, Hideaki AOCHI, Hiroyasu TANAKA
  • Publication number: 20230320107
    Abstract: A semiconductor storage device of an embodiment includes a substrate, a plurality of first conductive layers, pillar, and a second conductive layer. The plurality of first conductive layers are provided above the substrate, and mutually separated in a first direction. The pillar is provided to penetrate the plurality of the first conductive layers, and includes a first semiconductor layer extending in the first direction. A part of the pillar that intersects with the first conductive layers are functioned as memory cells. The second conductive layer is provided above the plurality of first conductive layers and is in contact with the first semiconductor layer. The second conductive layer is made of a metal or a silicide.
    Type: Application
    Filed: June 7, 2023
    Publication date: October 5, 2023
    Applicant: Kioxia Corporation
    Inventors: Keisuke NAKATSUKA, Yasuhiro UCHIYAMA, Akira MINO, Masayoshi TAGAMI, Shinya ARAI
  • Patent number: 11778828
    Abstract: According to one embodiment, a semiconductor memory device includes a substrate; an insulating layer provided on the substrate; a conductive layer provided on the insulating layer; a stacked body provided on the conductive layer and including a plurality of electrode layers and a plurality of insulating layers respectively provided among the plurality of electrode layers; a columnar section piercing through the stacked body to reach the conductive layer and extending in a first direction in which the stacked body is stacked; and a source layer. The columnar section includes a channel body and a charge storage film provided between the channel body and the respective electrode layers. The conductive layer includes a first film having electric conductivity and in contact with the lower end portion of the channel body; and an air gap provided to be covered by the first film.
    Type: Grant
    Filed: June 24, 2022
    Date of Patent: October 3, 2023
    Assignee: KIOXIA CORPORATION
    Inventor: Shinya Arai
  • Publication number: 20230307396
    Abstract: A semiconductor device includes a first stacked body and a second stacked body bonded to the first stacked body. The first stacked body includes a first pad provided on a first bonding surface to which the first stacked body and the second stacked body are bonded. The second stacked body includes a second pad bonded to the first pad on the first bonding surface. When a direction from the first stacked body to the second stacked body is defined as a first direction, a direction intersecting with the first direction is defined as a second direction, a direction intersecting with the first direction and the second direction is defined as a third direction, dimensions of the first pad and the second pad in the third direction are defined as PX1 and PX2, respectively, and dimensions of the first pad and the second pad in the second direction are defined as PY1 and PY2, respectively, the dimensions of the first pad and the second pad satisfy at least one of Equations (1) and (2) below.
    Type: Application
    Filed: September 1, 2022
    Publication date: September 28, 2023
    Applicant: Kioxia Corporation
    Inventors: Yasunori IWASHITA, Shinya ARAI, Keisuke NAKATSUKA, Hiroaki ASHIDATE
  • Publication number: 20230307387
    Abstract: A first chip includes a substrate, and first and second electrodes in a second region surrounding a first region. A second chip includes an interconnect layer, third and fourth electrodes in the second region, and first and second walls. Each of the first and third electrodes and the first wall includes a conductor surrounding the first region. The first and second electrodes are respectively in contact with the third and fourth electrodes. The first and second walls are in contact with the interconnect layer and are electrically coupled to the substrate via the first and third electrodes and the second and fourth electrodes, respectively. Each of a first ratio of an area covered by the first and second electrodes to the second region and a second ratio of an area of the third and fourth electrodes to the second region is 3% or more and 40% or less.
    Type: Application
    Filed: August 25, 2022
    Publication date: September 28, 2023
    Applicant: Kioxia Corporation
    Inventors: Ayako KAWANISHI, Shinya ARAI
  • Publication number: 20230307361
    Abstract: A method of manufacturing a semiconductor device includes forming a first metal pad in each of a plurality of first regions on a first substrate so that warpage is generated on the first substrate. The method further includes forming a second metal pad in each of a plurality of second regions on a second substrate via a predetermined pattern. The method further includes bonding, after forming the first metal pad and the second metal pad, the first substrate with the second substrate. Moreover, the method further includes: making a correction, at a time of forming the predetermined pattern in each of the plurality of second regions on the second substrate, to change a position of the predetermined pattern in each of the plurality of second regions in a direction of being closer to a center of the second substrate for a first direction and to change the position of the predetermined pattern in a direction of being farther from the center of the second substrate for a second direction.
    Type: Application
    Filed: September 1, 2022
    Publication date: September 28, 2023
    Applicant: Kioxia Corporation
    Inventors: Yasunori IWASHITA, Shinya ARAI, Keisuke NAKATSUKA, Hiroaki ASHIDATE
  • Publication number: 20230307369
    Abstract: A semiconductor memory device includes a first wiring, a second wiring, a memory pillar, a semiconductor layer, and a contact plug. The second wiring is provided above the first wiring in a first direction. The memory pillar penetrating at least one of a portion of the first wiring or a portion of the second wiring in the first direction. The semiconductor layer extends in the first direction provided in the memory pillar. The contact plug contains a metal and has a lower surface provided in the memory pillar, and the lower surface is in contact with the semiconductor layer below an upper surface of the second wiring.
    Type: Application
    Filed: August 18, 2022
    Publication date: September 28, 2023
    Applicant: Kioxia Corporation
    Inventors: Nobuhito Ichiki, Keisuke Nakatsuka, Shinya Arai, Koichi Sakata, Susumu Hashimoto
  • Patent number: 11758726
    Abstract: A semiconductor memory device according to an embodiment comprises: a semiconductor substrate; a stacked body having a plurality of first insulating layers and conductive layers stacked alternately on the semiconductor substrate; a columnar semiconductor layer contacting the semiconductor substrate in the stacked body being provided extending in a stacking direction of the stacked body and including a first portion and a second portion which is provided above the first portion; a memory layer provided on a side surface of the columnar semiconductor layer facing the stacked conductive layers and extending along the columnar semiconductor layer; and a second insulating layer provided between one of the first insulating layer and the conductive layers of the stacked body.
    Type: Grant
    Filed: March 19, 2021
    Date of Patent: September 12, 2023
    Assignee: Kioxia Corporation
    Inventor: Shinya Arai
  • Patent number: 11756909
    Abstract: According to one embodiment, a semiconductor storage device includes a first chip and a second chip. The first chip includes a first substrate, a transistor, and a first pad. The second chip includes a second pad, a memory cell array, and a second substrate. The second pad is on the first pad. The second chip is bonded to the first chip. The first chip and the second chip includes, when viewed in a first direction orthogonal to the first substrate, a first region and a second region. The first region includes the memory cell array. The second region surrounds an area around the first region and includes a wall extending from the first substrate to the second substrate. The second substrate includes a first opening passing through the second substrate in the second region.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: September 12, 2023
    Assignee: Kioxia Corporation
    Inventors: Shinya Watanabe, Shinya Arai
  • Patent number: 11744075
    Abstract: A semiconductor memory device includes a connecting member including a semiconductor material, a first electrode film, a first insulating film, a stacked body and three or more semiconductor pillars. The stacked body includes second electrode films and second insulating films that alternately stacked. The semiconductor pillars are arrayed along two or more directions, extend in a stacking direction, pierce through the stacked body and the first insulating film, and are connected to the connecting member. The device includes a third insulating film provided between the semiconductor pillars and the stacked body and between the connecting member and the first electrode film. A charge storage layer is provided at least between one of the second electrode films and the third insulating film.
    Type: Grant
    Filed: February 16, 2022
    Date of Patent: August 29, 2023
    Assignee: Kioxia Corporation
    Inventors: Yoshiaki Fukuzumi, Shinya Arai, Masaki Tsuji, Hideaki Aochi, Hiroyasu Tanaka
  • Patent number: 11688726
    Abstract: According to one embodiment, a semiconductor device includes a first chip, and a second chip bonded to the first chip. The first chip includes: a substrate; a transistor provided on the substrate; a plurality of first wirings provided above the transistor; and a plurality of first pads provided above the first wirings. The second chip includes: a plurality of second pads coupled to the plurality of first pads, respectively; a plurality of second wirings provided above the second pads; and a memory cell array provided above the second wirings. The first wiring, the first pad, the second pad, and the second wiring are coupled to one another in series to form a first pattern.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: June 27, 2023
    Assignee: KIOXIA CORPORATION
    Inventors: Yasunori Iwashita, Shinya Arai, Keisuke Nakatsuka, Takahiro Tomimatsu, Ryo Tanaka
  • Patent number: 11672117
    Abstract: A semiconductor memory device includes a semiconductor substrate, a first insulating film provided above the semiconductor substrate, a first conductive film provided above the first insulating film, a plurality of first electrode films provided above the first conductive film and stacked to be separated from each other, a semiconductor member extending in a stacking direction of the plurality of first electrode films, and a charge storage member provided between the semiconductor member and one of the plurality of first electrode films. The first conductive film includes a main portion disposed at least below the plurality of first electrode films, and a fine line portion extending from the main portion toward an end surface side of the semiconductor substrate. A width of the fine line portion is narrower than a width of the main portion.
    Type: Grant
    Filed: January 7, 2021
    Date of Patent: June 6, 2023
    Assignee: Kioxia Corporation
    Inventors: Kotaro Fujii, Jun Fujiki, Shinya Arai
  • Publication number: 20230129339
    Abstract: According to one embodiment, a semiconductor device includes a first substrate; a first insulating film provided on the first substrate; a first plug provided in the first insulating film; a second substrate provided on the first insulating film; and a first wiring including a first portion and a second portion. The first portion is provided in the second substrate and coupled to the first plug, and the second portion is provided on the second substrate and coupled to a bonding pad.
    Type: Application
    Filed: December 23, 2022
    Publication date: April 27, 2023
    Applicant: Kioxia Corporation
    Inventors: Takahiro TOMIMATSU, Shinya ARAI
  • Publication number: 20230114433
    Abstract: According to one embodiment, a stacked body includes a plurality of electrode layers stacked with an insulator interposed. A conductive via pierces the stacked body, and connects an upper layer interconnect and a lower layer interconnect. A insulating film is provided between the via and the stacked body. A distance along a diametral direction of the via between a side surface of the via and an end surface of one of the electrode layers opposing the side surface of the via is greater than a distance along the diametral direction between the side surface of the via and an end surface of the insulator opposing the side surface of the via.
    Type: Application
    Filed: December 12, 2022
    Publication date: April 13, 2023
    Applicant: Kioxia Corporation
    Inventors: Yasuhito YOSHIMIZU, Yoshiro Shimojo, Shinya Arai
  • Publication number: 20230075993
    Abstract: According to one embodiment, a semiconductor memory device comprises a substrate, a first conductive layer, and a second conductive layer arranged in this order in a first direction and separated from each other, a first semiconductor film extending in the first direction, intersecting the first conductive layer, and being in contact with the second conductive layer, and a first charge storage film arranged between the first semiconductor film and the first conductive layer, and being in contact with the second conductive layer, wherein the first semiconductor film includes a first portion formed of an n-type semiconductor at approximately a same height as the first conductive layer.
    Type: Application
    Filed: December 8, 2021
    Publication date: March 9, 2023
    Applicant: Kioxia Corporation
    Inventors: Koichi SAKATA, Shinya ARAI, Susumu HASHIMOTO, Akira MINO, Shunsuke OKADA, Keisuke NAKATSUKA