Patents by Inventor Tomohisa Ohtaki
Tomohisa Ohtaki 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: 11977099Abstract: A method for manufacturing a semiconductor device in which probes and the layout of the electrode pads of a test element group (TEG) are associated is provided. As a semiconductor device is miniaturized, a scribe area on a wafer also tends to decrease. Accordingly, it is necessary to reduce the size of a TEG arranged in the scribe area, and efficiently arrange an electrode pad for probe contact. Thus, it is necessary to associate the probes and the layout of the electrode pad. According to the method, a layout of a TEG electrode pad corresponding to a plurality of probes arranged in a fan shape or probes manufactured by Micro Electro Mechanical Systems (MEMS) technology is provided.Type: GrantFiled: February 6, 2018Date of Patent: May 7, 2024Assignee: Hitachi High-Tech CorporationInventors: Tomohisa Ohtaki, Takayuki Mizuno, Ryo Hirano, Toru Fujimura, Shigehiko Kato, Yasuhiko Nara, Katsuo Ohki, Akira Kageyama, Masaaki Komori
-
Patent number: 11709199Abstract: As a semiconductor device is miniaturized, a scribe area on a wafer also tends to decrease. Accordingly, it is necessary to reduce the size of a TEG arranged in the scribe area, and efficiently arrange an electrode pad for probe contact. Therefore, it is necessary to associate probes and the efficient layout of the electrode pad. The purpose of the present invention is to provide a technique for associating probes and the layout of the electrode pads of a TEG so as to facilitate the evaluation of electrical characteristics. According to an evaluation apparatus for a semiconductor device of the present invention, the above described problems can be solved by providing a plurality of probes arranged in a fan shape or probes manufactured by Micro Electro Mechanical Systems (MEMS) technology.Type: GrantFiled: February 6, 2018Date of Patent: July 25, 2023Assignee: Hitachi High-Tech CorporationInventors: Tomohisa Ohtaki, Takayuki Mizuno, Ryo Hirano, Toru Fujimura, Shigehiko Kato, Yasuhiko Nara, Katsuo Ohki, Akira Kageyama, Masaaki Komori
-
Patent number: 11391756Abstract: As a semiconductor device is miniaturized, a scribe area on a wafer also tends to decrease. Accordingly, it is necessary to reduce the size of a TEG arranged in the scribe area, and efficiently arrange an electrode pad for probe contact. Therefore, it is necessary to associate probes and the efficient layout of the electrode pad. The purpose of the present invention is to provide a technique for associating probes and the layout of an electrode pad of a TEG to facilitate the evaluation of electrical characteristics. According to the present invention, the above described problem can be solved by arranging a plurality of probes in a fan shape or manufacturing the probes with micro electro mechanical systems (MEMS) technology.Type: GrantFiled: February 6, 2018Date of Patent: July 19, 2022Assignee: Hitachi High-Tech CorporationInventors: Ryo Hirano, Takayuki Mizuno, Tomohisa Ohtaki, Toru Fujimura, Shigehiko Kato, Yasuhiko Nara, Katsuo Ohki, Akira Kageyama, Masaaki Komori
-
Publication number: 20210048450Abstract: As a semiconductor device is miniaturized, a scribe area on a wafer also tends to decrease. Accordingly, it is necessary to reduce the size of a TEG arranged in the scribe area, and efficiently arrange an electrode pad for probe contact. Therefore, it is necessary to associate probes and the efficient layout of the electrode pad. The purpose of the present invention is to provide a technique for associating probes and the layout of the electrode pads of a TEG so as to facilitate the evaluation of electrical characteristics. According to a method for manufacturing a semiconductor device of the present invention, the above-described problems can be solved by providing a layout of a TEG electrode pad corresponding to a plurality of probes arranged in a fan shape or probes manufactured by Micro Electro Mechanical Systems (MEMS) technology.Type: ApplicationFiled: February 6, 2018Publication date: February 18, 2021Inventors: Tomohisa OHTAKI, Takayuki MIZUNO, Ryo HIRANO, Toru FUJIMURA, Shigehiko KATO, Yasuhiko NARA, Katsuo OHKI, Akira KAGEYAMA, Masaaki KOMORI
-
Publication number: 20210033642Abstract: As a semiconductor device is miniaturized, a scribe area on a wafer also tends to decrease. Accordingly, it is necessary to reduce the size of a TEG arranged in the scribe area, and efficiently arrange an electrode pad for probe contact. Therefore, it is necessary to associate probes and the efficient layout of the electrode pad. The purpose of the present invention is to provide a technique for associating probes and the layout of an electrode pad of a TEG to facilitate the evaluation of electrical characteristics. According to the present invention, the above described problem can be solved by arranging a plurality of probes in a fan shape or manufacturing the probes with micro electro mechanical systems (MEMS) technology.Type: ApplicationFiled: February 6, 2018Publication date: February 4, 2021Inventors: Ryo HIRANO, Takayuki MIZUNO, Tomohisa OHTAKI, Toru FUJIMURA, Shigehiko KATO, Yasuhiko NARA, Katsuo OHKI, Akira KAGEYAMA, Masaaki KOMORI
-
Publication number: 20210025936Abstract: As a semiconductor device is miniaturized, a scribe area on a wafer also tends to decrease. Accordingly, it is necessary to reduce the size of a TEG arranged in the scribe area, and efficiently arrange an electrode pad for probe contact. Therefore, it is necessary to associate probes and the efficient layout of the electrode pad. The purpose of the present invention is to provide a technique for associating probes and the layout of the electrode pads of a TEG so as to facilitate the evaluation of electrical characteristics. According to an evaluation apparatus for a semiconductor device of the present invention, the above described problems can be solved by providing a plurality of probes arranged in a fan shape or probes manufactured by Micro Electro Mechanical Systems (MEMS) technology.Type: ApplicationFiled: February 6, 2018Publication date: January 28, 2021Inventors: Tomohisa OHTAKI, Takayuki MIZUNO, Ryo HIRANO, Toru FUJIMURA, Shigehiko KATO, Yasuhiko NARA, Katsuo OHKI, Akira KAGEYAMA, Masaaki KOMORI
-
Patent number: 9673020Abstract: A charged particle beam device capable of observing a sample in an air atmosphere or gas atmosphere has a thin film for separating the atmospheric pressure space from the decompressed space. A vacuum evacuation pump evacuates a first housing; and a detector detects a charged particle beam (obtained by irradiation of the sample) in the first housing. A thin film is provided to separate the inside of the first housing and the inside of a second housing at least along part of the interface between the first and second housings. An opening part is formed in the thin film so that its opening area on a charged particle irradiation unit's side is larger than its opening area on the sample side; and the thin film which covers the sample side of the opening part transmits or allows through the primary charged particle beam and the charged particle beam.Type: GrantFiled: September 10, 2015Date of Patent: June 6, 2017Assignee: Hitachi High-Technologies CorporationInventors: Yusuke Ominami, Tomohisa Ohtaki, Sukehiro Ito
-
Patent number: 9263232Abstract: A charged particle beam device (1) includes a charged particle optical lens barrel (10), a support housing (20) equipped with the charged particle optical lens barrel (10) thereon, and an insertion housing (30) inserted in the support housing (20). A first aperture member (15) is disposed in the vicinity of the center of the magnetic field of an objective lens, and a second aperture member (15) is disposed so as to externally close an opening part provided at the upper side of the insertion housing (30). Further, when a primary charged particle beam (12) is irradiated to a sample (60) arranged under the lower side of the second aperture member (31), secondary charged particles thus emitted are detected by a detector (16).Type: GrantFiled: April 11, 2013Date of Patent: February 16, 2016Assignee: Hitachi High-Technologies CorporationInventors: Yusuke Ominami, Shinsuke Kawanishi, Tomohisa Ohtaki, Masahiko Ajima, Sukehiro Ito
-
Patent number: 9236217Abstract: A sample observation method uses a charged particle beam apparatus comprising a charged particle optical column irradiating a charged particle beam, a vacuum chamber, and a sample chamber being capable of storing a sample. The method includes maintaining a pressure of the sample chamber higher than that of the vacuum chamber by a thin film which permits the charged particle beam to be transmitted, determining a relation between a height of a lower surface of the thin film and a height of a lower end of a lens barrel of an optical microscope, measuring a distance between the sample and the lens barrel, and setting a distance between the sample and thin film based on the relation and the distance.Type: GrantFiled: December 5, 2014Date of Patent: January 12, 2016Assignee: HITACHI HIGH-TECHNOLOGIES CORPORATIONInventors: Yusuke Ominami, Mami Konomi, Sukehiro Ito, Tomohisa Ohtaki, Shinsuke Kawanishi
-
Publication number: 20150380208Abstract: A charged particle beam device capable of observing a sample in an air atmosphere or gas atmosphere has a thin film for separating the atmospheric pressure space from the decompressed space. A vacuum evacuation pump evacuates a first housing; and a detector detects a charged particle beam (obtained by irradiation of the sample) in the first housing. A thin film is provided to separate the inside of the first housing and the inside of a second housing at least along part of the interface between the first and second housings. An opening part is formed in the thin film so that its opening area on a charged particle irradiation unit's side is larger than its opening area on the sample side; and the thin film which covers the sample side of the opening part transmits or allows through the primary charged particle beam and the charged particle beam.Type: ApplicationFiled: September 10, 2015Publication date: December 31, 2015Inventors: Yusuke OMINAMI, Tomohisa OHTAKI, Sukehiro ITO
-
Patent number: 9165741Abstract: A charged particle beam device capable of observing a sample in an air atmosphere or gas atmosphere has a thin film for separating the atmospheric pressure space from the decompressed space. A vacuum evacuation pump evacuates a first housing; and a detector detects a charged particle beam (obtained by irradiation of the sample) in the first housing. A thin film is provided to separate the inside of the first housing and the inside of a second housing at least along part of the interface between the first and second housings. An opening part is formed in the thin film so that its opening area on a charged particle irradiation unit's side is larger than its opening area on the sample side; and the thin film which covers the sample side of the opening part transmits or allows through the primary charged particle beam and the charged particle beam.Type: GrantFiled: July 4, 2012Date of Patent: October 20, 2015Assignee: HITACHI HIGH-TECHNOLOGIES CORPORATIONInventors: Yusuke Ominami, Tomohisa Ohtaki, Sukehiro Ito
-
Patent number: 9105442Abstract: Provided is a charged particle beam apparatus or charged particle microscope capable of observing an observation target sample in an air atmosphere or a gas environment without making significant changes to the configuration of a conventional high vacuum charged particle microscope. In a charged particle beam apparatus configured such that a thin film (10) is used to separate a vacuum environment and an air atmosphere (or a gas environment), an attachment (121) capable of holding the thin film (10) and whose interior can be maintained at an air atmosphere or a gas environment is inserted into a vacuum chamber (7) of a high vacuum charged particle microscope. The attachment (121) is vacuum-sealed and fixed to a vacuum partition of the vacuum sample chamber. Image quality is further improved by replacing the atmosphere in the attachment with helium or a light-elemental gas that has a lower mass than atmospheric gases such as nitrogen or water vapor.Type: GrantFiled: November 24, 2014Date of Patent: August 11, 2015Assignee: Hitachi High-Technologies CorporationInventors: Yusuke Ominami, Sukehiro Ito, Tomohisa Ohtaki
-
Publication number: 20150129763Abstract: A charged particle beam device (1) includes a charged particle optical lens barrel (10), a support housing (20) equipped with the charged particle optical lens barrel (10) thereon, and an insertion housing (30) inserted in the support housing (20). A first aperture member (15) is disposed in the vicinity of the center of the magnetic field of an objective lens, and a second aperture member (15) is disposed so as to externally close an opening part provided at the upper side of the insertion housing (30). Further, when a primary charged particle beam (12) is irradiated to a sample (60) arranged under the lower side of the second aperture member (31), secondary charged particles thus emitted are detected by a detector (16).Type: ApplicationFiled: April 11, 2013Publication date: May 14, 2015Inventors: Yusuke Ominami, Shinsuke Kawanishi, Tomohisa Ohtaki, Masahiko Ajima, Sukehiro Ito
-
Publication number: 20150083908Abstract: A sample observation method uses a charged particle beam apparatus comprising a charged particle optical column irradiating a charged particle beam, a vacuum chamber, and a sample chamber being capable of storing a sample. The method includes maintaining a pressure of the sample chamber higher than that of the vacuum chamber by a thin film which permits the charged particle beam to be transmitted, determining a relation between a height of a lower surface of the thin film and a height of a lower end of a lens barrel of an optical microscope, measuring a distance between the sample and the lens barrel, and setting a distance between the sample and thin film based on the relation and the distance.Type: ApplicationFiled: December 5, 2014Publication date: March 26, 2015Inventors: Yusuke OMINAMI, Mami KONOMI, Sukehiro ITO, Tomohisa OHTAKI, Shinsuke KAWANISHI
-
Publication number: 20150076347Abstract: Provided is a charged particle beam apparatus or charged particle microscope capable of observing an observation target sample in an air atmosphere or a gas environment without making significant changes to the configuration of a conventional high vacuum charged particle microscope. In a charged particle beam apparatus configured such that a thin film (10) is used to separate a vacuum environment and an air atmosphere (or a gas environment), an attachment (121) capable of holding the thin film (10) and whose interior can be maintained at an air atmosphere or a gas environment is inserted into a vacuum chamber (7) of a high vacuum charged particle microscope. The attachment (121) is vacuum-sealed and fixed to a vacuum partition of the vacuum sample chamber. Image quality is further improved by replacing the atmosphere in the attachment with helium or a light-elemental gas that has a lower mass than atmospheric gases such as nitrogen or water vapor.Type: ApplicationFiled: November 24, 2014Publication date: March 19, 2015Inventors: Yusuke Ominami, Sukehiro Ito, Tomohisa Ohtaki
-
Patent number: 8933400Abstract: Provided is an inspection apparatus or observation apparatus enabling appropriate inspection or observation of a sample in an easy-to-use manner, using a charged-particle technique and an optical technique.Type: GrantFiled: September 3, 2012Date of Patent: January 13, 2015Assignee: Hitachi High-Technologies CorporationInventors: Yusuke Ominami, Mami Konomi, Sukehiro Ito, Tomohisa Ohtaki, Shinsuke Kawanishi
-
Patent number: 8921786Abstract: Provided is a charged particle beam apparatus or charged particle microscope capable of observing an observation target sample in an air atmosphere or a gas environment without making significant changes to the configuration of a conventional high vacuum charged particle microscope. In a charged particle beam apparatus configured such that a thin film (10) is used to separate a vacuum environment and an air atmosphere (or a gas environment), an attachment (121) capable of holding the thin film (10) and whose interior can be maintained at an air atmosphere or a gas environment is inserted into a vacuum chamber (7) of a high vacuum charged particle microscope. The attachment (121) is vacuum-sealed and fixed to a vacuum partition of the vacuum sample chamber. Image quality is further improved by replacing the atmosphere in the attachment with helium or a light-elemental gas that has a lower mass than atmospheric gases such as nitrogen or water vapor.Type: GrantFiled: February 27, 2014Date of Patent: December 30, 2014Assignee: Hitachi High-Technologies CorporationInventors: Yusuke Ominami, Sukehiro Ito, Tomohisa Ohtaki
-
Patent number: 8921784Abstract: There is provided a scanning electron microscope capable of achieving a size reduction of the device while at the same time suppressing the increase in column temperature as well as maintaining performance, e.g., resolution, etc. With respect to a scanning electron microscope for observing a sample by irradiating the sample with an electron beam emitted from an electron source and focused by condenser lenses, and detecting secondary electrons from the sample, the condenser lenses comprise both an electromagnetic coil-type condenser lens and a permanent magnet-type condenser lens.Type: GrantFiled: November 12, 2010Date of Patent: December 30, 2014Assignee: Hitachi High-Technologies CorporationInventors: Toru Iwaya, Sakae Kobori, Tomohisa Ohtaki, Haruhiko Hatano
-
Publication number: 20140246583Abstract: Provided is an inspection apparatus or observation apparatus enabling appropriate inspection or observation of a sample in an easy-to-use manner, using a charged-particle technique and an optical technique.Type: ApplicationFiled: September 3, 2012Publication date: September 4, 2014Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATIONInventors: Yusuke Ominami, Mami Konomi, Sukehiro Ito, Tomohisa Ohtaki, Shinsuke Kawanishi
-
Patent number: 8809782Abstract: A scanning electron microscope includes a main scanning electron microscope unit having an electron optical column and a sample chamber, a controller over the main scanning electron microscope unit, a single housing that houses both the main scanning electron microscope unit and the controller, and a bottom plate disposed under the single housing, the main scanning electron microscope unit and the controller. A first leg member is attached to a bottom face of the bottom plate on a side of the controller with a first opening hole provided through the bottom plate on a side of the main scanning electron microscope unit, and a damper is fixed to a bottom face of the main scanning electron microscope unit and disposed through the first opening hole.Type: GrantFiled: July 20, 2010Date of Patent: August 19, 2014Assignee: Hitachi High-Technologies CorporationInventors: Tomohisa Ohtaki, Masahiko Ajima, Sukehiro Ito, Mitsuru Onuma, Akira Omachi