Patents by Inventor Hideki ITAI

Hideki ITAI 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: 11756898
    Abstract: A semiconductor memory device includes: two memory blocks; a first structure disposed between the two memory blocks; and a second structure separated from the two memory blocks, or a plurality of second structures. The two memory blocks include a plurality of first conductive layers and a plurality of first insulating layers alternately arranged. The first structure has one end, and the one end is closer to the substrate than the plurality of first conductive layers are. The second structure has one end, and the one end is closer to the substrate than at least apart of the first conductive layers among the plurality of first conductive layers is. Another end of the first structure and another end of the second structure are farther from the substrate than the plurality of first conductive layers are. The second structure is separated from the first structure.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: September 12, 2023
    Assignee: KIOXIA CORPORATION
    Inventors: Hideki Itai, Mitsuhiro Noguchi, Hiromasa Yoshimori, Hideyuki Tabata, Yasushi Nakajima
  • Publication number: 20220005767
    Abstract: A semiconductor memory device includes: two memory blocks; a first structure disposed between the two memory blocks; and a second structure separated from the two memory blocks, or a plurality of second structures. The two memory blocks include a plurality of first conductive layers and a plurality of first insulating layers alternately arranged. The first structure has one end, and the one end is closer to the substrate than the plurality of first conductive layers are. The second structure has one end, and the one end is closer to the substrate than at least apart of the first conductive layers among the plurality of first conductive layers is. Another end of the first structure and another end of the second structure are farther from the substrate than the plurality of first conductive layers are. The second structure is separated from the first structure.
    Type: Application
    Filed: December 14, 2020
    Publication date: January 6, 2022
    Applicant: KIOXIA CORPORATION
    Inventors: Hideki ITAI, Mitsuhiro NOGUCHI, Hiromasa YOSHIMORI, Hideyuki TABATA, Yasushi NAKAJIMA
  • Patent number: 10984980
    Abstract: The objective of the present invention is to provide a charged particle beam device for setting, from an image of a trench-like groove or a pit, device conditions for finding a hole or the like provided in the trench or the pit, or measuring a hole or the like provided inside the trench or the like with high accuracy. In the present invention, a charged particle beam device comprises: a deflector for causing a charged particle beam emitted from a charged particle source to perform a scan; a detector for detecting a charged particle obtained on the basis of the scanning of the charged particle beam; and a computation processing device for generating an image on the basis of the output of the detector.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: April 20, 2021
    Assignee: Hitachi High-Tech Corporation
    Inventors: Kei Sakai, Satoru Yamaguchi, Hideki Itai, Yasunori Takasugi, Kumiko Shimizu
  • Patent number: 10984981
    Abstract: A charged particle beam device is provided which minimizes the beam irradiation amount while maintaining a high measurement success rate. The charged particle beam device includes a control device for controlling a scan deflector on the basis of selection of a predetermined number n of frames, wherein the control device controls the scan deflector so that a charged particle beam is selectively scanned on a portion on a sample corresponding to a pixel satisfying a predetermined condition or a region including the portion on the sample from an image obtained by scanning the charged particle beam for a number m of frames (m?1), the number m of frames being smaller than the number n of frames.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: April 20, 2021
    Assignee: Hitachi High-Tech Corporation
    Inventors: Hideki Itai, Kumiko Shimizu, Wataru Mori, Hajime Kawano, Shahedul Hoque
  • Patent number: 10665420
    Abstract: Provided is a charged particle beam apparatus, aiming at obtaining an image and the like focused on the sample surface and the bottom while preventing the visual field deviation occurred when focusing on the sample surface and the bottom respectively. The charged particle beam apparatus forms a first image (301), which is based on detection of the first energy charged particles, based on an irradiation with a beam whose focus is adjusted on a sample surface side, forms a second image (304) which is based on detection of second energy charged particles having a relatively higher energy than the first energy and a third image (303) which is based on the detection of the first energy charged particles, based on the irradiation with a beam whose focus is adjusted on a bottom side of a pattern included in the sample, acquires a deviation between the first image and the third image, and composes the first image and the second image so as to correct the deviation.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: May 26, 2020
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Yasunori Takasugi, Satoru Yamaguchi, Kei Sakai, Hideki Itai, Yoshinori Momonoi, Toshimasa Kameda, Yoshihiro Kimura
  • Patent number: 10546715
    Abstract: The objective of the present invention is to provide a charged particle beam device wherein scanning is performed through a scanning pattern that may suppress the influence from charge accumulation without having to perform blanking. In order to achieve this objective, a charged particle beam device is proposed wherein a first scan line is scanned by deflecting a charged particle beam in a first direction. The charged particle beam is deflected in a manner where the ending point of the first scan line is connected to the scan starting point of a second scan line which is arranged to be parallel to the first scan line so as to draw a scanning trajectory, thereby modifying the scan line position. The second scan line is scanned by scanning the charged particle beam from the scan starting point of the second scan line toward a second direction that is opposite to the first direction.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: January 28, 2020
    Assignee: Hitachi High—Technologies Corporation
    Inventors: Shahedul Hoque, Hajime Kawano, Yoshinori Momonoi, Hideki Itai, Minoru Yamazaki, Hiroshi Nishihama
  • Publication number: 20190295815
    Abstract: Provided is a charged particle beam apparatus, aiming at obtaining an image and the like focused on the sample surface and the bottom while preventing the visual field deviation occurred when focusing on the sample surface and the bottom respectively. The charged particle beam apparatus forms a first image (301), which is based on detection of the first energy charged particles, based on an irradiation with a beam whose focus is adjusted on a sample surface side, forms a second image (304) which is based on detection of second energy charged particles having a relatively higher energy than the first energy and a third image (303) which is based on the detection of the first energy charged particles, based on the irradiation with a beam whose focus is adjusted on a bottom side of a pattern included in the sample, acquires a deviation between the first image and the third image, and composes the first image and the second image so as to correct the deviation.
    Type: Application
    Filed: March 4, 2019
    Publication date: September 26, 2019
    Inventors: Yasunori TAKASUGI, Satoru YAMAGUCHI, Kei SAKAI, Hideki ITAI, Yoshinori MOMONOI, Toshimasa KAMEDA, Yoshihiro KIMURA
  • Publication number: 20190035600
    Abstract: The objective of the present invention is to provide a charged particle beam device for setting, from an image of a trench-like groove or a pit, device conditions for finding a hole or the like provided in the trench or the pit, or measuring a hole or the like provided inside the trench or the like with high accuracy. In the present invention, a charged particle beam device comprises: a deflector for causing a charged particle beam emitted from a charged particle source to perform a scan; a detector for detecting a charged particle obtained on the basis of the scanning of the charged particle beam; and a computation processing device for generating an image on the basis of the output of the detector.
    Type: Application
    Filed: January 29, 2016
    Publication date: January 31, 2019
    Applicant: Hitachi High-Technologies Corporation
    Inventors: Kei SAKAI, Satoru YAMAGUCHI, Hideki ITAI, Yasunori TAKASUGI, Kumiko SHIMIZU
  • Publication number: 20180374674
    Abstract: A charged particle beam device is provided which minimizes the beam irradiation amount while maintaining a high measurement success rate. The charged particle beam device includes a control device for controlling a scan deflector on the basis of selection of a predetermined number n of frames, wherein the control device controls the scan deflector so that a charged particle beam is selectively scanned on a portion on a sample corresponding to a pixel satisfying a predetermined condition or a region including the portion on the sample from an image obtained by scanning the charged particle beam for a number m of frames (m?1), the number m of frames being smaller than the number n of frames.
    Type: Application
    Filed: August 31, 2018
    Publication date: December 27, 2018
    Inventors: Hideki ITAI, Kumiko SHIMIZU, Wataru MORI, Hajime KAWANO, Shahedul HOQUE
  • Publication number: 20180269026
    Abstract: The objective of the present invention is to provide a charged particle beam device wherein scanning is performed through a scanning pattern that may suppress the influence from charge accumulation without having to perform blanking. In order to achieve this objective, a charged particle beam device is proposed wherein a first scan line is scanned by deflecting a charged particle beam in a first direction. The charged particle beam is deflected in a manner where the ending point of the first scan line is connected to the scan starting point of a second scan line which is arranged to be parallel to the first scan line so as to draw a scanning trajectory, thereby modifying the scan line position. The second scan line is scanned by scanning the charged particle beam from the scan starting point of the second scan line toward a second direction that is opposite to the first direction.
    Type: Application
    Filed: September 29, 2015
    Publication date: September 20, 2018
    Inventors: Shahedul HOQUE, Hajime KAWANO, Yoshinori MOMONOI, Hideki ITAI, Minoru YAMAZAKI, Hiroshi NISHIHAMA
  • Publication number: 20170323763
    Abstract: The purpose of the present invention is to provide a charged particle beam device with which it is possible to minimize the beam irradiation amount while maintaining a high measurement success rate. The present invention is a charged particle beam device provided with a control device for controlling a scan deflector on the basis of selection of a predetermined number n of frames, wherein the control device controls the scan deflector so that a charged particle beam is selectively scanned on a portion on a sample corresponding to a pixel satisfying a predetermined condition or a region including the portion on the sample from an image obtained by scanning the charged particle beam for a number m of frames (m?1), the number m of frames being smaller than the number n of frames.
    Type: Application
    Filed: July 27, 2015
    Publication date: November 9, 2017
    Inventors: Hideki ITAI, Kumiko SHIMIZU, Wataru MORI, Hajime KAWANO, Shahedul HOQUE
  • Patent number: 8923614
    Abstract: In order to solve the problem that the resolution of a back-scattered electron image without a contrast difference between materials with close atomic numbers is low, an image processing apparatus that performs an image process on a back-scattered electron image as an input image includes: a material peak detection unit that determines a peak luminance value with a peak of a frequency of a luminance histogram based on a luminance value obtained for each measurement position by using the input image as an input and information about material-dependent back-scattered electron generation efficiency, and that outputs the peak luminance value for each material; and an image information adjustment unit that emphasizes a material-dependent contrast on the basis of the input image and the peak luminance value for each material.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: December 30, 2014
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Hideki Itai, Zhigang Wang, Kazunari Asao
  • Publication number: 20130343649
    Abstract: In order to solve the problem that the resolution of a back-scattered electron image without a contrast difference between materials with close atomic numbers is low, an image processing apparatus that performs an image process on a back-scattered electron image as an input image includes: a material peak detection unit that determines a peak luminance value with a peak of a frequency of a luminance histogram based on a luminance value obtained for each measurement position by using the input image as an input and information about material-dependent back-scattered electron generation efficiency, and that outputs the peak luminance value for each material; and an image information adjustment unit that emphasizes a material-dependent contrast on the basis of the input image and the peak luminance value for each material.
    Type: Application
    Filed: March 8, 2013
    Publication date: December 26, 2013
    Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Hideki ITAI, Zhigang WANG, Kazunari ASAO