Patents by Inventor Minami SHOUJI
Minami SHOUJI 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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Publication number: 20240029994Abstract: This inspection system 100 comprises: an electron source 102 which irradiates a sample 200 with an inspection beam; a detector 105 which detects secondary electrons obtained by irradiating the sample 200 with the inspection beam and outputs a detection signal; a laser device 107 which emits an action laser that changes the amount of secondary electrons; an electron gun 106 which emits an action electron beam that changes the amount of secondary electrons; and a computer system 140 which generates an image of the sample 200 on the basis of the detection signal.Type: ApplicationFiled: September 18, 2020Publication date: January 25, 2024Inventors: Natsuki TSUNO, Yasuhiro SHIRASAKI, Minami SHOUJI, Daisuke BIZEN, Makoto SUZUKI, Satoshi TAKADA, Yohei NAKAMURA
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Patent number: 11869745Abstract: An object of the invention is to provide a charged particle beam device capable of increasing the contrast of an observation image of a sample as much as possible in accordance with light absorption characteristics that change for each optical parameter. The charged particle beam device according to the invention changes an optical parameter such as a polarization plane of light emitted to the sample, and generates the observation image having a contrast corresponding to the changed optical parameter. An optical parameter that maximizes a light absorption coefficient of the sample is specified according to a feature amount of a shape pattern of the sample (refer to FIG. 5).Type: GrantFiled: March 27, 2019Date of Patent: January 9, 2024Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Minami Shouji, Natsuki Tsuno, Hiroya Ohta, Daisuke Bizen
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Publication number: 20230377837Abstract: Charged particle beam apparatus includes: a charged particle optical system to irradiate a sample with a pulsed charged particle beam; an optical system to irradiate the sample with light; a detector configured to detect a secondary charged particle emitted by irradiating the sample with the pulsed charged particle beam; a control unit configured to control the charged particle optical system to irradiate the sample with the pulsed charged particle beam under a predetermined electron beam pulse condition, and control the optical system to irradiate the sample with the light under a predetermined light irradiation condition; and a computation device configured to set the predetermined light irradiation condition based on a difference between a secondary charged particle signal amount detected under a first electron beam pulse condition and a secondary charged particle signal amount detected under a second electron beam pulse condition different from the first electron beam pulse condition.Type: ApplicationFiled: October 26, 2020Publication date: November 23, 2023Inventors: Yohei NAKAMURA, Natsuki TSUNO, Yasuhiro SHIRASAKI, Minami SHOUJI, Shota MITSUGI, Yuko SASAKI
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Publication number: 20230274909Abstract: An object of the invention is to obtain an observation image in which a plurality of pieces of feature data of a sample are emphasized in a charged particle beam device that acquires an observation image of the sample by irradiating the sample with a charged particle beam and light. The charged particle beam device according to the invention calculates a sequence for modulating a light irradiation condition according to an irradiation condition of a charged particle beam, and controls the light irradiation condition according to the sequence (see FIG. 2).Type: ApplicationFiled: September 28, 2020Publication date: August 31, 2023Inventors: Minami SHOUJI, Yasuhiro SHIRASAKI, Natsuki TSUNO, Hirohiko KITSUKI, Hiroya OHTA
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Publication number: 20230273253Abstract: A semiconductor inspection device 1 having a first measurement mode and a second measurement mode includes: an electron optical system configured to irradiate a sample with an electron beam; an optical system configured to irradiate the sample with light; an electron detector configured to detect a signal electron; a photodetector 29 configured to detect signal light; a control unit 11 configured to control the electron optical system and the optical system such that an electron beam and light are emitted under a first irradiation condition in the first measurement mode, and to control the electron optical system and the optical system such that an electron beam and light are emitted under a second irradiation condition in the second measurement mode; and a computer configured to process a detection signal from the electron detector or the photodetector.Type: ApplicationFiled: September 29, 2020Publication date: August 31, 2023Inventors: Yasuhiro SHIRASAKI, Natsuki TSUNO, Minami SHOUJI, Makoto SAKAKIBARA, Satoshi TAKADA
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Patent number: 11631568Abstract: A method of detecting a defect in a device using a charged particle beam includes inputting a charged particle beam condition, a light condition, and electronic device circuit information, controlling a charged particle beam applied to a sample based on the electron beam condition, controlling light applied to the sample based on the light condition, detecting second electrons emitted from the sample by the application of the charged particle beam and the light, and generating a calculation netlist based on the electronic device circuit information, generating a light irradiation netlist based on the calculation netlist and the light condition, estimating a first irradiation result when the charged particle beam and the light are applied to the sample based on the light irradiation netlist and the charged particle beam condition, and comparing the first irradiation result with a second irradiation result when the charged particle beam and the light are actually applied to the sample based on the electron beamType: GrantFiled: December 17, 2021Date of Patent: April 18, 2023Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Yasuhiro Shirasaki, Natsuki Tsuno, Minami Shouji, Yohei Nakamura, Muneyuki Fukuda
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Patent number: 11393657Abstract: An electron beam device obtains contrast reflecting an electronic state of a sample with high sensitivity. The device includes an electron optical system which emits an electron beam to a sample and detects electrons emitted from the sample; a light pulse emission system that emits a light pulse to the sample; a synchronization processing unit that samples the emitted electrons; an image signal processing unit which forms an image by a detection signal output based upon the emitted electrons detected by the electron optical system; and a device control unit for setting a control condition of the electron optical system. The device control unit sets a sampling frequency for detection sampling of the emitted electrons to be greater than a value obtained by dividing the number of emissions of the light pulse per unit pixel time by the unit pixel time.Type: GrantFiled: September 11, 2018Date of Patent: July 19, 2022Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Minami Shouji, Natsuki Tsuno, Toshihide Agemura
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Publication number: 20220216032Abstract: An object of the invention is to provide a charged particle beam apparatus capable of acquiring an observation image having a high contrast in a sample whose light absorption characteristic depends on a light wavelength. The charged particle beam apparatus according to the invention irradiates the sample with light, generates an observation image of the sample, changes an irradiation intensity per unit time of the light, and then generates a plurality of the observation images having different contrasts (see FIG. 4).Type: ApplicationFiled: May 21, 2019Publication date: July 7, 2022Applicant: HITACHI HIGH-TECH CORPORATIONInventors: Minami SHOUJI, Natsuki TSUNO, Hiroya OHTA, Daisuke BIZEN, Hajime KAWANO
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Patent number: 11355308Abstract: A charged particle beam device includes an input and output device that receives, as inputs, a charged particle beam condition, a light condition, and electronic device circuit information, a charged particle beam control system that controls a charged particle beam applied to a sample based on the electron beam condition, a light control system that controls light applied to the sample based on the light condition, a detector that detects second electrons emitted from the sample by the application of the charged particle beam and the light and outputs a detection signal, and a calculator that generates a calculation netlist based on the electronic device circuit information, generates a light irradiation netlist based on the calculation netlist and the light condition, estimates a first irradiation result when the charged particle beam and the light are applied to the sample based on the light irradiation netlist and the charged particle beam condition, and compares the first irradiation result with a secondType: GrantFiled: July 13, 2020Date of Patent: June 7, 2022Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Yasuhiro Shirasaki, Natsuki Tsuno, Minami Shouji, Yohei Nakamura, Muneyuki Fukuda
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Patent number: 11328897Abstract: A charged particle beam device according to the present invention changes a signal amount of emitted charged particles by irradiating the sample with light due to irradiation under a plurality of light irradiation conditions, and determines at least any one of a material of the sample or a shape of the sample according to the changed signal amount.Type: GrantFiled: August 6, 2020Date of Patent: May 10, 2022Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Minami Shouji, Natsuki Tsuno, Yasuhiro Shirasaki, Muneyuki Fukuda, Satoshi Takada
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Publication number: 20220139667Abstract: An object of the invention is to provide a charged particle beam device capable of increasing the contrast of an observation image of a sample as much as possible in accordance with light absorption characteristics that change for each optical parameter. The charged particle beam device according to the invention changes an optical parameter such as a polarization plane of light emitted to the sample, and generates the observation image having a contrast corresponding to the changed optical parameter. An optical parameter that maximizes a light absorption coefficient of the sample is specified according to a feature amount of a shape pattern of the sample (refer to FIG. 5).Type: ApplicationFiled: March 27, 2019Publication date: May 5, 2022Inventors: Minami Shouji, Natsuki Tsuno, Hiroya Ohta, Daisuke Bizen
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Publication number: 20220108866Abstract: A method of detecting a defect in a device using a charged particle beam includes inputting a charged particle beam condition, a light condition, and electronic device circuit information, controlling a charged particle beam applied to a sample based on the electron beam condition, controlling light applied to the sample based on the light condition, detecting second electrons emitted from the sample by the application of the charged particle beam and the light, and generating a calculation netlist based on the electronic device circuit information, generating a light irradiation netlist based on the calculation netlist and the light condition, estimating a first irradiation result when the charged particle beam and the light are applied to the sample based on the light irradiation netlist and the charged particle beam condition, and comparing the first irradiation result with a second irradiation result when the charged particle beam and the light are actually applied to the sample based on the electron beamType: ApplicationFiled: December 17, 2021Publication date: April 7, 2022Inventors: Yasuhiro Shirasaki, Natsuki Tsuno, Minami Shouji, Yohei Nakamura, Muneyuki Fukuda
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Publication number: 20220059317Abstract: An electron beam device obtains contrast reflecting an electronic state of a sample with high sensitivity. The device includes an electron optical system which emits an electron beam to a sample and detects electrons emitted from the sample; a light pulse emission system that emits a light pulse to the sample; a synchronization processing unit that samples the emitted electrons; an image signal processing unit which forms an image by a detection signal output based upon the emitted electrons detected by the electron optical system; and a device control unit for setting a control condition of the electron optical system. The device control unit sets a sampling frequency for detection sampling of the emitted electrons to be greater than a value obtained by dividing the number of emissions of the light pulse per unit pixel time by the unit pixel time.Type: ApplicationFiled: September 11, 2018Publication date: February 24, 2022Applicant: Hitachi High-Tech CorporationInventors: Minami SHOUJI, Natsuki TSUNO, Toshihide AGEMURA
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Publication number: 20210233740Abstract: The present invention provides an electron microscope and an observation method capable of observing secondary electrons in the atmosphere. In detail, a charged particle microscope of the invention includes: a partition wall that separates a non-vacuum space in which a sample is loaded from a vacuum space inside a charged particle optical lens barrel; an upper electrode; a lower electrode on which the sample is loaded; a power supply for applying a voltage to at least one of the upper electrode and the lower electrode; a sample gap adjusting mechanism for adjusting a gap between the sample and the partition wall; and an image forming unit for forming an image of the sample based on the current absorbed by the lower electrode. The secondary electrons are selectively measured by using an amplification effect due to ionization collision between electrons and gas molecules generated when a voltage is applied between the upper electrode and the lower electrode.Type: ApplicationFiled: April 22, 2016Publication date: July 29, 2021Applicant: Hitachi High-Technologies CorporationInventors: Minami SHOUJI, Natsuki TSUNO, Yuusuke OOMINAMI
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Publication number: 20210066029Abstract: A charged particle beam device according to the present invention changes a signal amount of emitted charged particles by irradiating the sample with light due to irradiation under a plurality of light irradiation conditions, and determines at least any one of a material of the sample or a shape of the sample according to the changed signal amount.Type: ApplicationFiled: August 6, 2020Publication date: March 4, 2021Inventors: Minami Shouji, Natsuki Tsuno, Yasuhiro Shirasaki, Muneyuki Fukuda, Satoshi Takada
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Publication number: 20210066028Abstract: A charged particle beam device includes an input and output device that receives, as inputs, a charged particle beam condition, a light condition, and electronic device circuit information, a charged particle beam control system that controls a charged particle beam applied to a sample based on the electron beam condition, a light control system that controls light applied to the sample based on the light condition, a detector that detects second electrons emitted from the sample by the application of the charged particle beam and the light and outputs a detection signal, and a calculator that generates a calculation netlist based on the electronic device circuit information, generates a light irradiation netlist based on the calculation netlist and the light condition, estimates a first irradiation result when the charged particle beam and the light are applied to the sample based on the light irradiation netlist and the charged particle beam condition, and compares the first irradiation result with a secondType: ApplicationFiled: July 13, 2020Publication date: March 4, 2021Inventors: Yasuhiro Shirasaki, Natsuki Tsuno, Minami Shouji, Yohei Nakamura, Muneyuki Fukuda
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Patent number: 10134564Abstract: Provided is a charged particle beam device including a charged particle optical column that irradiates a specimen with a primary charged particle beam, and a specimen base rotating unit that is capable of rotating the specimen base in a state of an angle formed by a surface of the specimen base and an optical axis of the primary charged particle beam being inclined to a non-perpendicular angle, in which the specimen base is configured to include a detecting element that detects a charged particle scattered or transmitted inside the specimen, and transmitted charged particle images of the specimen corresponding to each angle is acquired by irradiating the specimen in a state of the specimen base rotating unit being rotated at a plurality of different angles.Type: GrantFiled: November 26, 2015Date of Patent: November 20, 2018Assignee: HITACHI HIGH-TECHNOLOGIES CORPORATIONInventors: Taiga Okumura, Takashi Ohshima, Yuusuke Oominami, Minami Shouji, Akiko Hisada, Akio Yoneyama
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Publication number: 20170330724Abstract: An electronic microscope has a great depth of focus compared with an optical microscope. Thus, information is superimposed in the depth direction in one image. Thus, observation of a three-dimensional structure inside a specimen with use of the electronic microscope requires accurate specification of a three-dimensional position or density of a structure inside the specimen. Furthermore, the specimen on a slide glass that is observed with the optical microscope may not be put in a TEM device in the related art. Thus, a very complicated preparation of the specimen is required for performing three-dimensional internal structure observation, with the electronic microscope, of a location that is observed with the optical microscope.Type: ApplicationFiled: November 26, 2015Publication date: November 16, 2017Inventors: Taiga OKUMURA, Takashi OHSHIMA, Yuusuke OOMINAMI, Minami SHOUJI, Akiko HISADA, Akio YONEYAMA
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Patent number: 9812288Abstract: The objective of the present invention is to simply perform image observation through transmitted charged particles. A sample irradiated by a charged particle beam is disposed directly or via a predetermined member on a light-emitting element (23) whereinto charged particles that have traversed or scattered inside the sample enter, causing a light to be emitted therefrom, which is collected and detected efficiently using a light transmission means (203) to generate a transmission charged particle image of the sample.Type: GrantFiled: January 9, 2015Date of Patent: November 7, 2017Assignee: Hitachi High-Technologies CorporationInventors: Minami Shouji, Takashi Ohshima, Yuusuke Oominami, Hideo Morishita, Kunio Harada
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Publication number: 20170069458Abstract: The objective of the present invention is to simply perform image observation through transmitted charged particles. A sample irradiated by a charged particle beam is disposed directly or via a predetermined member on a light-emitting element (23) whereinto charged particles that have traversed or scattered inside the sample enter, causing a light to be emitted therefrom, which is collected and detected efficiently using a light transmission means (203) to generate a transmission charged particle image of the sample.Type: ApplicationFiled: January 9, 2015Publication date: March 9, 2017Inventors: Minami SHOUJI, Takashi OHSHIMA, Yuusuke OOMINAMI, Hideo MORISHITA, Kunio HARADA