Patents by Inventor Sachie FUKUDA

Sachie FUKUDA 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).

  • Publication number: 20240147728
    Abstract: According to one embodiment, a semiconductor memory device includes: a plurality of first conductive layers aligned in a first direction with a space in between; a first plug penetrating the first conductive layers; a second conductive layer below the first conductive layers, the second conductive layer being coupled to a lower end of the first plug; a first transistor below the first conductive layers; a second transistor in a second region between the first transistor and a first region below the second conductive layer, the second transistor having a gate electrically coupled to the first transistor and a drain electrically coupled to the first transistor; and a third transistor in the second region, the third transistor having a source and a drain electrically coupled to each other.
    Type: Application
    Filed: January 3, 2024
    Publication date: May 2, 2024
    Applicant: Kioxia Corporation
    Inventors: Toshimitsu IWASAWA, You KAMATA, Sachie FUKUDA, Nobuharu MIYATA, Haruka SHIBAYAMA, Yasumitsu NOZAWA
  • Patent number: 11876080
    Abstract: A semiconductor memory device includes first and second memory chips, each including a region of a core circuit, a first area adjacent to a first side of the region in a first direction, a second area adjacent to a second side of the region in a second direction, a third area adjacent to the first area in the first direction and to the second area in the second direction, a first pad in the first area, a second pad in the second area, and third pad in the third area. In each memory chip, a first bonding wire connects the first and third pads. In addition, a second bonding wire connects the second pads of the first and second memory chips. The second memory chip is stacked on the first memory chip to expose the first, second, and third areas of the first memory chip in a third direction.
    Type: Grant
    Filed: July 8, 2022
    Date of Patent: January 16, 2024
    Assignee: Kioxia Corporation
    Inventors: Masahiro Yoshihara, Toshikazu Watanabe, Nobuharu Miyata, Yasumitsu Nozawa, Tomohito Kawano, Sachie Fukuda, Akiyoshi Itou, Toshimitsu Iwasawa
  • Publication number: 20220344307
    Abstract: A semiconductor memory device includes first and second memory chips, each including a region of a core circuit, a first area adjacent to a first side of the region in a first direction, a second area adjacent to a second side of the region in a second direction, a third area adjacent to the first area in the first direction and to the second area in the second direction, a first pad in the first area, a second pad in the second area, and third pad in the third area. In each memory chip, a first bonding wire connects the first and third pads. In addition, a second bonding wire connects the second pads of the first and second memory chips. The second memory chip is stacked on the first memory chip to expose the first, second, and third areas of the first memory chip in a third direction.
    Type: Application
    Filed: July 8, 2022
    Publication date: October 27, 2022
    Inventors: Masahiro YOSHIHARA, Toshikazu WATANABE, Nobuharu MIYATA, Yasumitsu NOZAWA, Tomohito KAWANO, Sachie FUKUDA, Akiyoshi ITOU, Toshimitsu IWASAWA
  • Patent number: 11410974
    Abstract: A semiconductor memory device includes first and second memory chips, each including a region of a core circuit, a first area adjacent to a first side of the region in a first direction, a second area adjacent to a second side of the region in a second direction, a third area adjacent to the first area in the first direction and to the second area in the second direction, a first pad in the first area, a second pad in the second area, and third pad in the third area. In each memory chip, a first bonding wire connects the first and third pads. In addition, a second bonding wire connects the second pads of the first and second memory chips. The second memory chip is stacked on the first memory chip to expose the first, second, and third areas of the first memory chip in a third direction.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: August 9, 2022
    Assignee: KIOXIA CORPORATION
    Inventors: Masahiro Yoshihara, Toshikazu Watanabe, Nobuharu Miyata, Yasumitsu Nozawa, Tomohito Kawano, Sachie Fukuda, Akiyoshi Itou, Toshimitsu Iwasawa
  • Publication number: 20210167041
    Abstract: A semiconductor memory device includes first and second memory chips, each including a region of a core circuit, a first area adjacent to a first side of the region in a first direction, a second area adjacent to a second side of the region in a second direction, a third area adjacent to the first area in the first direction and to the second area in the second direction, a first pad in the first area, a second pad in the second area, and third pad in the third area. In each memory chip, a first bonding wire connects the first and third pads. In addition, a second bonding wire connects the second pads of the first and second memory chips. The second memory chip is stacked on the first memory chip to expose the first, second, and third areas of the first memory chip in a third direction.
    Type: Application
    Filed: September 3, 2020
    Publication date: June 3, 2021
    Inventors: Masahiro YOSHIHARA, Toshikazu WATANABE, Nobuharu MIYATA, Yasumitsu NOZAWA, Tomohito KAWANO, Sachie FUKUDA, Akiyoshi ITOU, Toshimitsu IWASAWA