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).
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Patent number: 11756898Abstract: 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: GrantFiled: December 14, 2020Date of Patent: September 12, 2023Assignee: KIOXIA CORPORATIONInventors: Hideki Itai, Mitsuhiro Noguchi, Hiromasa Yoshimori, Hideyuki Tabata, Yasushi Nakajima
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Publication number: 20220005767Abstract: 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: ApplicationFiled: December 14, 2020Publication date: January 6, 2022Applicant: KIOXIA CORPORATIONInventors: Hideki ITAI, Mitsuhiro NOGUCHI, Hiromasa YOSHIMORI, Hideyuki TABATA, Yasushi NAKAJIMA
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Patent number: 10984980Abstract: 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: GrantFiled: January 29, 2016Date of Patent: April 20, 2021Assignee: Hitachi High-Tech CorporationInventors: Kei Sakai, Satoru Yamaguchi, Hideki Itai, Yasunori Takasugi, Kumiko Shimizu
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Patent number: 10984981Abstract: 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: GrantFiled: August 31, 2018Date of Patent: April 20, 2021Assignee: Hitachi High-Tech CorporationInventors: Hideki Itai, Kumiko Shimizu, Wataru Mori, Hajime Kawano, Shahedul Hoque
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Patent number: 10665420Abstract: 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: GrantFiled: March 4, 2019Date of Patent: May 26, 2020Assignee: Hitachi High-Technologies CorporationInventors: Yasunori Takasugi, Satoru Yamaguchi, Kei Sakai, Hideki Itai, Yoshinori Momonoi, Toshimasa Kameda, Yoshihiro Kimura
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Patent number: 10546715Abstract: 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: GrantFiled: September 29, 2015Date of Patent: January 28, 2020Assignee: Hitachi High—Technologies CorporationInventors: Shahedul Hoque, Hajime Kawano, Yoshinori Momonoi, Hideki Itai, Minoru Yamazaki, Hiroshi Nishihama
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Publication number: 20190295815Abstract: 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: ApplicationFiled: March 4, 2019Publication date: September 26, 2019Inventors: Yasunori TAKASUGI, Satoru YAMAGUCHI, Kei SAKAI, Hideki ITAI, Yoshinori MOMONOI, Toshimasa KAMEDA, Yoshihiro KIMURA
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Publication number: 20190035600Abstract: 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: ApplicationFiled: January 29, 2016Publication date: January 31, 2019Applicant: Hitachi High-Technologies CorporationInventors: Kei SAKAI, Satoru YAMAGUCHI, Hideki ITAI, Yasunori TAKASUGI, Kumiko SHIMIZU
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Publication number: 20180374674Abstract: 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: ApplicationFiled: August 31, 2018Publication date: December 27, 2018Inventors: Hideki ITAI, Kumiko SHIMIZU, Wataru MORI, Hajime KAWANO, Shahedul HOQUE
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Publication number: 20180269026Abstract: 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: ApplicationFiled: September 29, 2015Publication date: September 20, 2018Inventors: Shahedul HOQUE, Hajime KAWANO, Yoshinori MOMONOI, Hideki ITAI, Minoru YAMAZAKI, Hiroshi NISHIHAMA
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Publication number: 20170323763Abstract: 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: ApplicationFiled: July 27, 2015Publication date: November 9, 2017Inventors: Hideki ITAI, Kumiko SHIMIZU, Wataru MORI, Hajime KAWANO, Shahedul HOQUE
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Patent number: 8923614Abstract: 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: GrantFiled: March 8, 2013Date of Patent: December 30, 2014Assignee: Hitachi High-Technologies CorporationInventors: Hideki Itai, Zhigang Wang, Kazunari Asao
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Publication number: 20130343649Abstract: 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: ApplicationFiled: March 8, 2013Publication date: December 26, 2013Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATIONInventors: Hideki ITAI, Zhigang WANG, Kazunari ASAO