Patents by Inventor Daina Inoue

Daina Inoue 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: 20150060985
    Abstract: According to one embodiment, nonvolatile semiconductor memory device includes: a semiconductor layer; element regions separated the semiconductor layer, the element regions; and a memory cell including a first gate insulating film, a charge storage layer, a second gate insulating film, and a control gate electrode provided above the element regions, a peripheral region including a resistance element including a resistance element layer provided above the semiconductor layer via a first insulating film, a dummy layer provided on a part of the resistance element layer via a second insulating film, a third insulating film provided on the resistance element layer at a first distance from the dummy layer, a fourth insulating film provided on the semiconductor layer at a second distance from the resistance element layer, and a contact piercing the third insulating film, and connected to the resistance element layer, the first distance being shorter than the second distance.
    Type: Application
    Filed: March 10, 2014
    Publication date: March 5, 2015
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Takashi Kobayashi, Daina Inoue, Hideto Takekida
  • Patent number: 8592887
    Abstract: A semiconductor storage device includes an interlayer insulating film provided between select gate electrodes, a first fill material extending along upper portions of memory cell gate electrodes so as to cover air gaps residing between the memory cell gate electrodes, the first fill material extending along sidewalls of the select gate electrodes and sidewalls of the interlayer insulating film so as to define a recess above the first fill material extending along the sidewalls of the select gate electrodes and the sidewalls of the interlayer insulating film, a second fill material filling the recess above the first fill material, and a plurality of contacts formed through the interlayer insulating film, the contacts physically contacting each of device areas formed in a semiconductor substrate.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: November 26, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Daina Inoue, Hidenobu Nagashima, Akira Yotsumoto
  • Patent number: 8460997
    Abstract: A semiconductor memory device comprises a plurality of transistors having a stacked-gate structure. Each transistor includes a semiconductor substrate, a gate insulator formed on the semiconductor substrate, a lower gate formed on the semiconductor substrate with the gate insulator interposed, an intergate insulator formed on the lower gate, and an upper gate formed and silicided on the lower gate with the intergate insulator interposed. A portion of the transistors has an aperture formed through the intergate insulator to connect the lower gate with the upper gate and further includes a block film composed of an insulator and formed smaller than the upper gate and larger than the aperture above the upper gate to cover the aperture.
    Type: Grant
    Filed: January 3, 2011
    Date of Patent: June 11, 2013
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Mitsuhiro Omura, Satoshi Nagashima, Katsunori Yahashi, Jungo Inaba, Daina Inoue
  • Publication number: 20120256263
    Abstract: A semiconductor storage device includes an interlayer insulating film provided between select gate electrodes, a first fill material extending along upper portions of memory cell gate electrodes so as to cover air gaps residing between the memory cell gate electrodes, the first fill material extending along sidewalls of the select gate electrodes and sidewalls of the interlayer insulating film so as to define a recess above the first fill material extending along the sidewalls of the select gate electrodes and the sidewalls of the interlayer insulating film, a second fill material filling the recess above the first fill material, and a plurality of contacts formed through the interlayer insulating film, the contacts physically contacting each of device areas formed in a semiconductor substrate.
    Type: Application
    Filed: December 21, 2011
    Publication date: October 11, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Daina INOUE, Hidenobu Nagashima, Akira Yotsumoto
  • Publication number: 20120061837
    Abstract: In a method of manufacturing a semiconductor device according to an embodiment, an etching stopper, an oxide film and a mask material are formed. A trench pattern is formed in the mask material. The oxide film is etched to form the trench pattern therein by using the mask material having the trench pattern formed therein as a mask. The etching stopper is etched until the etching stopper is penetrated to form the trench pattern therein, by using the oxide film having the trench pattern formed therein as a mask. A Cu film is formed to be filled in the trench pattern formed in the etching stopper and the oxide film and to cover the top surface of the oxide film. CMP is performed on the Cu film and the oxide film until the top surface of the etching stopper serving as a stopper is exposed.
    Type: Application
    Filed: September 12, 2011
    Publication date: March 15, 2012
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Daina INOUE, Minori KAJIMOTO
  • Publication number: 20120032266
    Abstract: A semiconductor device is disclosed. The semiconductor device includes a semiconductor substrate; a memory cell region defined in the semiconductor substrate; and a line-and-space pattern formed in the memory cell region in which the lines constitute an active region and the spaces constitute an element isolation region. The first and the second lines of the active region counted from two opposing ends of the memory cell region are each separated into two or more line segments. The segment ends of the line segments of the first and the second lines are linked to form a loop by a linking pattern.
    Type: Application
    Filed: August 4, 2011
    Publication date: February 9, 2012
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Daina INOUE, Minori KAJIMOTO, Tatsuya KATO
  • Publication number: 20110097888
    Abstract: A semiconductor memory device comprises a plurality of transistors having a stacked-gate structure. Each transistor includes a semiconductor substrate, a gate insulator formed on the semiconductor substrate, a lower gate formed on the semiconductor substrate with the gate insulator interposed, an intergate insulator formed on the lower gate, and an upper gate formed and silicided on the lower gate with the intergate insulator interposed. A portion of the transistors has an aperture formed through the intergate insulator to connect the lower gate with the upper gate and further includes a block film composed of an insulator and formed smaller than the upper gate and larger than the aperture above the upper gate to cover the aperture.
    Type: Application
    Filed: January 3, 2011
    Publication date: April 28, 2011
    Inventors: Mitsuhiro Omura, Satoshi Nagashima, Katsunori Yahashi, Jungo Inaba, Daina Inoue
  • Patent number: 7687387
    Abstract: A method of manufacturing a semiconductor device according to an embodiment of the present invention includes depositing first to third mask layers above a substrate, processing the third mask layer, processing the second mask layer, slimming the second mask layer in an L/S section and out of the L/S section, peeling the third mask layer in the L/S section and out of the L/S section, forming spacers on sidewalls of the second mask layer in the L/S section and out of the L/S section, etching the second mask layer in the L/S section, under a condition that the second mask layer out of the L/S section is covered with a resist, to remove the second mask layer in the L/S section while the second mask layer out of the L/S section remains, and processing the first mask layer by etching, using the spacers in the L/S section and out of the L/S section and the second mask layer out of the L/S section as a mask, the spacers in the L/S section and out of the L/S section and the second mask layer out of the L/S section be
    Type: Grant
    Filed: August 18, 2008
    Date of Patent: March 30, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Jungo Inaba, Daina Inoue, Mutsumi Okajima
  • Publication number: 20090096007
    Abstract: A semiconductor memory device comprises a plurality of transistors having a stacked-gate structure. Each transistor includes a semiconductor substrate, a gate insulator formed on the semiconductor substrate, a lower gate formed on the semiconductor substrate with the gate insulator interposed, an intergate insulator formed on the lower gate, and an upper gate formed and silicided on the lower gate with the intergate insulator interposed. A portion of the transistors has an aperture formed through the intergate insulator to connect the lower gate with the upper gate and further includes a block film composed of an insulator and formed smaller than the upper gate and larger than the aperture above the upper gate to cover the aperture.
    Type: Application
    Filed: October 2, 2008
    Publication date: April 16, 2009
    Inventors: Mitsuhiro OMURA, Satoshi NAGASHIMA, Katsunori YAHASHI, Jungo INABA, Daina INOUE
  • Publication number: 20090050951
    Abstract: A method of manufacturing a semiconductor device according to an embodiment of the present invention includes depositing first to third mask layers above a substrate, processing the third mask layer, processing the second mask layer, slimming the second mask layer in an L/S section and out of the L/S section, peeling the third mask layer in the L/S section and out of the L/S section, forming spacers on sidewalls of the second mask layer in the L/S section and out of the L/S section, etching the second mask layer in the L/S section, under a condition that the second mask layer out of the L/S section Is covered with a resist, to remove the second mask layer in the L/S section while the second mask layer out of the L/S section remains, and processing the first mask layer by etching, using the spacers in the L/S section and out of the L/S section and the second mask layer out of the L/S section as a mask, the spacers in the L/S section and out of the L/S section and the second mask layer out of the L/S section be
    Type: Application
    Filed: August 18, 2008
    Publication date: February 26, 2009
    Inventors: Jungo Inaba, Daina Inoue, Mutsumi Okajima