Patents by Inventor Toshikazu Matsui

Toshikazu Matsui 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: 10910394
    Abstract: A semiconductor memory array includes a first nonvolatile memory cell having a first charge storage layer and a first gate electrode and a second nonvolatile memory cell, adjacent to the first memory cell in a first direction, having a second charge storage layer and a second gate electrode. The first and second electrodes extend in a second direction perpendicular to the first direction, the first electrode has a first contact section extending toward the second electrode in the first direction, and the second electrode has a second contact section extending toward the first electrode in the first direction. The first and second contact positions are shifted in the second direction, respectively, and the first electrode and the first contact section are electrically separated from the second electrode and the second contact section.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: February 2, 2021
    Assignee: Renesas Electronics Corporation
    Inventors: Tsutomu Okazaki, Akira Kato, Kan Yasui, Kyoya Nitta, Digh Hisamoto, Yasushi Ishii, Daisuke Okada, Toshihiro Tanaka, Toshikazu Matsui
  • Publication number: 20200357807
    Abstract: A semiconductor memory array includes a first nonvolatile memory cell having a first charge storage layer and a first gate electrode and a second nonvolatile memory cell, adjacent to the first memory cell in a first direction, having a second charge storage layer and a second gate electrode. The first and second electrodes extend in a second direction perpendicular to the first direction, the first electrode has a first contact section extending toward the second electrode in the first direction, and the second electrode has a second contact section extending toward the first electrode in the first direction. The first and second contact positions are shifted in the second direction, respectively, and the first electrode and the first contact section are electrically separated from the second electrode and the second contact section.
    Type: Application
    Filed: May 22, 2020
    Publication date: November 12, 2020
    Inventors: Tsutomu OKAZAKI, Akira KATO, Kan YASUI, Kyoya NITTA, Digh HISAMOTO, Yasushi ISHII, Daisuke OKADA, Toshihiro TANAKA, Toshikazu MATSUI
  • Patent number: 10692878
    Abstract: A semiconductor memory array includes a first nonvolatile memory cell having a first charge storage layer and a first gate electrode and a second nonvolatile memory cell, adjacent to the first memory cell in a first direction, having a second charge storage layer and a second gate electrode. The first and second electrodes extend in a second direction perpendicular to the first direction, the first electrode has a first contact section extending toward the second electrode in the first direction, and the second electrode has a second contact section extending toward the first electrode in the first direction. The first and second contact positions are shifted in the second direction, respectively, and the first electrode and the first contact section are electrically separated from the second electrode and the second contact section.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: June 23, 2020
    Assignee: Renesas Electronics Corporation
    Inventors: Tsutomu Okazaki, Akira Kato, Kan Yasui, Kyoya Nitta, Digh Hisamoto, Yasushi Ishii, Daisuke Okada, Toshihiro Tanaka, Toshikazu Matsui
  • Publication number: 20190386013
    Abstract: A semiconductor memory array includes a first nonvolatile memory cell having a first charge storage layer and a first gate electrode and a second nonvolatile memory cell, adjacent to the first memory cell in a first direction, having a second charge storage layer and a second gate electrode. The first and second electrodes extend in a second direction perpendicular to the first direction, the first electrode has a first contact section extending toward the second electrode in the first direction, and the second electrode has a second contact section extending toward the first electrode in the first direction. The first and second contact positions are shifted in the second direction, respectively, and the first electrode and the first contact section are electrically separated from the second electrode and the second contact section.
    Type: Application
    Filed: August 27, 2019
    Publication date: December 19, 2019
    Inventors: Tsutomu OKAZAKI, Akira KATO, Kan YASUI, Kyoya NITTA, Digh HISAMOTO, Yasushi ISHII, Daisuke OKADA, Toshihiro TANAKA, Toshikazu MATSUI
  • Patent number: 10396089
    Abstract: A semiconductor memory array includes a first nonvolatile memory cell having a first charge storage layer and a first gate electrode and a second nonvolatile memory cell, adjacent to the first memory cell in a first direction, having a second charge storage layer and a second gate electrode. The first and second electrodes extend in a second direction perpendicular to the first direction, the first electrode has a first contact section extending toward the second electrode in the first direction, and the second electrode has a second contact section extending toward the first electrode in the first direction. The first and second contact positions are shifted in the second direction, respectively, and the first electrode and the first contact section are electrically separated from the second electrode and the second contact section.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: August 27, 2019
    Assignee: Renesas Electronics Corporation
    Inventors: Tsutomu Okazaki, Daisuke Okada, Kyoya Nitta, Toshihiro Tanaka, Akira Kato, Toshikazu Matsui, Yasushi Ishii, Digh Hisamoto, Kan Yasui
  • Publication number: 20190096896
    Abstract: A semiconductor memory array includes a first nonvolatile memory cell having a first charge storage layer and a first gate electrode and a second nonvolatile memory cell, adjacent to the first memory cell in a first direction, having a second charge storage layer and a second gate electrode. The first and second electrodes extend in a second direction perpendicular to the first direction, the first electrode has a first contact section extending toward the second electrode in the first direction, and the second electrode has a second contact section extending toward the first electrode in the first direction. The first and second contact positions are shifted in the second direction, respectively, and the first electrode and the first contact section are electrically separated from the second electrode and the second contact section.
    Type: Application
    Filed: November 27, 2018
    Publication date: March 28, 2019
    Inventors: Tsutomu OKAZAKI, Daisuke OKADA, Kyoya NITTA, Toshihiro TANAKA, Akira KATO, Toshikazu MATSUI, Yasushi ISHII, Digh HISAMOTO, Kan YASUI
  • Patent number: 10141324
    Abstract: A semiconductor memory array includes a first nonvolatile memory cell having a first charge storage layer and a first gate electrode and a second nonvolatile memory cell, adjacent to the first memory cell in a first direction, having a second charge storage layer and a second gate electrode. The first and second electrodes extend in a second direction perpendicular to the first direction, the first electrode has a first contact section extending toward the second electrode in the first direction, and the second electrode has a second contact section extending toward the first electrode in the first direction. The first and second contact positions are shifted in the second direction, respectively, and the first electrode and the first contact section are electrically separated from the second electrode and the second contact section.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: November 27, 2018
    Assignee: Renesas Electronics Corporation
    Inventors: Tsutomu Okazaki, Daisuke Okada, Kyoya Nitta, Toshihiro Tanaka, Akira Kato, Toshikazu Matsui, Yasushi Ishii, Digh Hisamoto, Kan Yasui
  • Patent number: 9755012
    Abstract: In connection with a semiconductor device including a capacitor element there is provided a technique capable of improving the reliability of the capacitor element. A capacitor element is formed in an element isolation region formed over a semiconductor substrate. The capacitor element includes a lower electrode and an upper electrode formed over the lower electrode through a capacitor insulating film. Basically, the lower electrode and the upper electrode are formed from polysilicon films and a cobalt silicide film formed over the surfaces of the polysilicon films. End portions of the cobalt silicide film formed over the upper electrode are spaced apart a distance from end portions of the upper electrode. Besides, end portions of the cobalt silicide film formed over the lower electrode are spaced apart a distance from boundaries between the upper electrode and the lower electrode.
    Type: Grant
    Filed: September 2, 2016
    Date of Patent: September 5, 2017
    Assignee: Renesas Electronics Corporation
    Inventors: Yoshiyuki Kawashima, Koichi Toba, Yasushi Ishii, Toshikazu Matsui, Takashi Hashimoto
  • Publication number: 20170229469
    Abstract: A semiconductor memory array includes a first nonvolatile memory cell having a first charge storage layer and a first gate electrode and a second nonvolatile memory cell, adjacent to the first memory cell in a first direction, having a second charge storage layer and a second gate electrode. The first and second electrodes extend in a second direction perpendicular to the first direction, the first electrode has a first contact section extending toward the second electrode in the first direction, and the second electrode has a second contact section extending toward the first electrode in the first direction. The first and second contact positions are shifted in the second direction, respectively, and the first electrode and the first contact section are electrically separated from the second electrode and the second contact section.
    Type: Application
    Filed: April 28, 2017
    Publication date: August 10, 2017
    Inventors: Tsutomu OKAZAKI, Daisuke OKADA, Kyoya NITTA, Toshihiro TANAKA, Akira KATO, Toshikazu MATSUI, Yasushi ISHII, Digh HISAMOTO, Kan YASUI
  • Patent number: 9640546
    Abstract: A semiconductor memory array includes a first nonvolatile memory cell having a first charge storage layer and a first gate electrode and a second nonvolatile memory cell, adjacent to the first memory cell in a first direction, having a second charge storage layer and a second gate electrode. The first and second electrodes extend in a second direction perpendicular to the first direction, the first electrode has a first contact section extending toward the second electrode in the first direction, and the second electrode has a second contact section extending toward the first electrode in the first direction. The first and second contact positions are shifted in the second direction, respectively, and the first electrode and the first contact section are electrically separated from the second electrode and the second contact section.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: May 2, 2017
    Assignee: Renesas Electronics Corporation
    Inventors: Tsutomu Okazaki, Daisuke Okada, Kyoya Nitta, Toshihiro Tanaka, Akira Kato, Toshikazu Matsui, Yasushi Ishii, Digh Hisamoto, Kan Yasui
  • Publication number: 20160372537
    Abstract: In connection with a semiconductor device including a capacitor element there is provided a technique capable of improving the reliability of the capacitor element. A capacitor element is formed in an element isolation region formed over a semiconductor substrate. The capacitor element includes a lower electrode and an upper electrode formed over the lower electrode through a capacitor insulating film. Basically, the lower electrode and the upper electrode are formed from polysilicon films and a cobalt silicide film formed over the surfaces of the polysilicon films. End portions of the cobalt silicide film formed over the upper electrode are spaced apart a distance from end portions of the upper electrode. Besides, end portions of the cobalt silicide film formed over the lower electrode are spaced apart a distance from boundaries between the upper electrode and the lower electrode.
    Type: Application
    Filed: September 2, 2016
    Publication date: December 22, 2016
    Inventors: Yoshiyuki KAWASHIMA, Koichi TOBA, Yasushi ISHII, Toshikazu MATSUI, Takashi HASHIMOTO
  • Patent number: 9461105
    Abstract: In connection with a semiconductor device including a capacitor element there is provided a technique capable of improving the reliability of the capacitor element. A capacitor element is formed in an element isolation region formed over a semiconductor substrate. The capacitor element includes a lower electrode and an upper electrode formed over the lower electrode through a capacitor insulating film. Basically, the lower electrode and the upper electrode are formed from polysilicon films and a cobalt silicide film formed over the surfaces of the polysilicon films. End portions of the cobalt silicide film formed over the upper electrode are spaced apart a distance from end portions of the upper electrode. Besides, end portions of the cobalt silicide film formed over the lower electrode are spaced apart a distance from boundaries between the upper electrode and the lower electrode.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: October 4, 2016
    Assignee: Renesas Electronics Corporation
    Inventors: Yoshiyuki Kawashima, Koichi Toba, Yasushi Ishii, Toshikazu Matsui, Takashi Hashimoto
  • Publication number: 20150171160
    Abstract: In connection with a semiconductor device including a capacitor element there is provided a technique capable of improving the reliability of the capacitor element. A capacitor element is formed in an element isolation region formed over a semiconductor substrate. The capacitor element includes a lower electrode and an upper electrode formed over the lower electrode through a capacitor insulating film. Basically, the lower electrode and the upper electrode are formed from polysilicon films and a cobalt silicide film formed over the surfaces of the polysilicon films. End portions of the cobalt silicide film formed over the upper electrode are spaced apart a distance from end portions of the upper electrode. Besides, end portions of the cobalt silicide film formed over the lower electrode are spaced apart a distance from boundaries between the upper electrode and the lower electrode.
    Type: Application
    Filed: March 3, 2015
    Publication date: June 18, 2015
    Inventors: Yoshiyuki KAWASHIMA, Koichi TOBA, Yasushi ISHII, Toshikazu MATSUI, Takashi HASHIMOTO
  • Publication number: 20150137215
    Abstract: A semiconductor memory array includes a first nonvolatile memory cell having a first charge storage layer and a first gate electrode and a second nonvolatile memory cell, adjacent to the first memory cell in a first direction, having a second charge storage layer and a second gate electrode. The first and second electrodes extend in a second direction perpendicular to the first direction, the first electrode has a first contact section extending toward the second electrode in the first direction, and the second electrode has a second contact section extending toward the first electrode in the first direction. The first and second contact positions are shifted in the second direction, respectively, and the first electrode and the first contact section are electrically separated from the second electrode and the second contact section.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 21, 2015
    Inventors: Tsutomu OKAZAKI, Daisuke OKADA, Kyoya NITTA, Toshihiro TANAKA, Akira KATO, Toshikazu MATSUI, Yasushi ISHII, Digh HISAMOTO, Kan YASUI
  • Patent number: 8975678
    Abstract: In connection with a semiconductor device including a capacitor element there is provided a technique capable of improving the reliability of the capacitor element. A capacitor element is formed in an element isolation region formed over a semiconductor substrate. The capacitor element includes a lower electrode and an upper electrode formed over the lower electrode through a capacitor insulating film. Basically, the lower electrode and the upper electrode are formed from polysilicon films and a cobalt silicide film formed over the surfaces of the polysilicon films. End portions of the cobalt silicide film formed over the upper electrode are spaced apart a distance from end portions of the upper electrode. Besides, end portions of the cobalt silicide film formed over the lower electrode are spaced apart a distance from boundaries between the upper electrode and the lower electrode.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: March 10, 2015
    Assignee: Renesas Electronics Corporation
    Inventors: Yoshiyuki Kawashima, Koichi Toba, Yasushi Ishii, Toshikazu Matsui, Takashi Hashimoto
  • Patent number: 8963226
    Abstract: A semiconductor memory array includes a first nonvolatile memory cell having a first charge storage layer and a first gate electrode and a second nonvolatile memory cell, adjacent to the first memory cell in a first direction, having a second charge storage layer and a second gate electrode. The first and second electrodes extend in a second direction perpendicular to the first direction, the first electrode has a first contact section extending toward the second electrode in the first direction, and the second electrode has a second contact section extending toward the first electrode in the first direction. The first and second contact positions are shifted in the second direction, respectively, and the first electrode and the first contact section are electrically separated from the second electrode and the second contact section.
    Type: Grant
    Filed: August 20, 2013
    Date of Patent: February 24, 2015
    Assignee: Renesas Electronics Corporation
    Inventors: Tsutomu Okazaki, Daisuke Okada, Kyoya Nitta, Toshihiro Tanaka, Akira Kato, Toshikazu Matsui, Yasushi Ishii, Digh Hisamoto, Kan Yasui
  • Patent number: 8796923
    Abstract: The present invention aims at providing a photocathode which can improve various characteristics. In a photocathode 10, an intermediate layer 14, an underlayer 16, and a photoelectron emission layer 18 are formed in this order on a substrate 12. The photoelectron emission layer 18 contains Sb and Bi and functions to emit a photoelectron in response to light incident thereon. The photoelectron emission layer 18 contains 32 mol % or less of Bi relative to SbBi. This can dramatically improve the linearity at low temperatures.
    Type: Grant
    Filed: November 7, 2008
    Date of Patent: August 5, 2014
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Toshikazu Matsui, Yasumasa Hamana, Kimitsugu Nakamura, Yoshihiro Ishigami, Daijiro Oguri
  • Publication number: 20130334592
    Abstract: A semiconductor memory array includes a first nonvolatile memory cell having a first charge storage layer and a first gate electrode and a second nonvolatile memory cell, adjacent to the first memory cell in a first direction, having a second charge storage layer and a second gate electrode. The first and second electrodes extend in a second direction perpendicular to the first direction, the first electrode has a first contact section extending toward the second electrode in the first direction, and the second electrode has a second contact section extending toward the first electrode in the first direction. The first and second contact positions are shifted in the second direction, respectively, and the first electrode and the first contact section are electrically separated from the second electrode and the second contact section.
    Type: Application
    Filed: August 20, 2013
    Publication date: December 19, 2013
    Applicant: Renesas Electronics Corporation
    Inventors: Tsutomu OKAZAKI, Daisuke OKADA, Kyoya NITTA, Toshihiro TANAKA, Akira KATO, Toshikazu MATSUI, Yasushi ISHII, Digh HISAMOTO, Kan YASUI
  • Publication number: 20130234289
    Abstract: In connection with a semiconductor device including a capacitor element there is provided a technique capable of improving the reliability of the capacitor element. A capacitor element is formed in an element isolation region formed over a semiconductor substrate. The capacitor element includes a lower electrode and an upper electrode formed over the lower electrode through a capacitor insulating film. Basically, the lower electrode and the upper electrode are formed from polysilicon films and a cobalt silicide film formed over the surfaces of the polysilicon films. End portions of the cobalt silicide film formed over the upper electrode are spaced apart a distance from end portions of the upper electrode. Besides, end portions of the cobalt silicide film formed over the lower electrode are spaced apart a distance from boundaries between the upper electrode and the lower electrode.
    Type: Application
    Filed: April 22, 2013
    Publication date: September 12, 2013
    Applicant: Renesas Electronics Corporation
    Inventors: Yoshiyuki KAWASHIMA, Koichi TOBA, Yasushi ISHII, Toshikazu MATSUI, Takashi HASHIMOTO
  • Patent number: 8530958
    Abstract: A semiconductor device having a non-volatile memory is disclosed, whose disturb defect can be diminished or prevented. A memory cell of the non-volatile memory has a memory gate electrode formed over a main surface of a semiconductor substrate through an insulating film for charge storage. A first side wall is formed on a side face of the memory gate electrode, and at a side face of the first side wall, a second side wall is formed. On an upper surface of an n+-type semiconductor region for source in the memory cell there is formed a silicide layer whose end portion on the memory gate electrode MG side is defined by the second side wall.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: September 10, 2013
    Assignee: Renesas Electronics Corporation
    Inventors: Koichi Toba, Yasushi Ishii, Yoshiyuki Kawashima, Satoru Machida, Munekatsu Nakagawa, Kentaro Saito, Toshikazu Matsui, Takashi Hashimoto, Kosuke Okuyama