Patents by Inventor Akihiro Onizawa

Akihiro Onizawa 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: 10545018
    Abstract: The purpose of the present invention is to provide a pattern measurement device which adequately evaluates a pattern formed by means of a patterning method for forming a pattern that is not in a photomask. In order to fulfil the purpose, the present invention suggests a pattern measurement device provided with a computation device for measuring the dimensions between patterns formed on a sample, wherein: the centroid of the pattern formed on the sample is extracted from data to be measured obtained by irradiating beams; a position alignment process is executed between the extracted centroid and measurement reference data in which a reference functioning as the measurement start point or measurement end point is set; and the dimensions between the measurement start point or the measurement end point of the measurement reference data, which was subjected to position alignment, and the edge or the centroid of the pattern contained in the data to be measured is measured.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: January 28, 2020
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Satoru Yamaguchi, Norio Hasegawa, Akiyuki Sugiyama, Miki Isawa, Akihiro Onizawa, Ryuji Mitsuhashi
  • Publication number: 20160320182
    Abstract: The purpose of the present invention is to provide a pattern measurement device which adequately evaluates a pattern formed by means of a patterning method for forming a pattern that is not in a photomask. In order to fulfil the purpose, the present invention suggests a pattern measurement device provided with a computation device for measuring the dimensions between patterns formed on a sample, wherein: the centroid of the pattern formed on the sample is extracted from data to be measured obtained by irradiating beams; a position alignment process is executed between the extracted centroid and measurement reference data in which a reference functioning as the measurement start point or measurement end point is set; and the dimensions between the measurement start point or the measurement end point of the measurement reference data, which was subjected to position alignment, and the edge or the centroid of the pattern contained in the data to be measured is measured.
    Type: Application
    Filed: November 17, 2014
    Publication date: November 3, 2016
    Inventors: Satoru YAMAGUCHI, Norio HASEGAWA, Akiyuki SUGIYAMA, Miki ISAWA, Akihiro ONIZAWA, Ryuji MITSUHASHI
  • Patent number: 9057873
    Abstract: In order to provide a technique for performing global alignment (detecting position shift and rotation of a wafer) stably and automatically using an optical microscope, as a pattern for global alignment, multiple alignment pattern candidates are calculated (107), multiple data for matching are created for each alignment pattern (108), matching is performed with respect to the data for matching for each alignment pattern in descending order of appropriateness as an alignment pattern with an image (113) based on an image signal from the optical microscope (114), and the amount of position shift and the amount of rotation of the wafer are calculated (116) on the basis of the results of matching (115).
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: June 16, 2015
    Assignee: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Atsushi Miyamoto, Naoki Hosoya, Toshikazu Kawahara, Akihiro Onizawa
  • Publication number: 20150146967
    Abstract: The present invention relates to a setting method for an image capture area on the occasion of evaluation of a circuit pattern using a scanning charged particle microscope. A circuit pattern that is to be evaluated using an actual image or design data is determined, a plurality of image capture areas are set such that the circuit pattern to be evaluated is included in a section of the field of vision, and images are captured of the plurality of image capture areas. When setting the image capture areas, a permissible value for the distance between adjacent first and second images is set, and the positions of the image capture areas are optimized so as to correspond as closely as possible with the permissible value for distance. As a result, it is possible to improve the throughput of image capture of wide inspection areas that do not fit in the field of vision of the scanning charge particle microscope, and to efficiently carry out determination of an inspection area that may cause electrical failure.
    Type: Application
    Filed: April 24, 2013
    Publication date: May 28, 2015
    Inventors: Atsushi Miyamoto, Toshikazu Kawahara, Akihiro Onizawa, Yutaka Hojo
  • Publication number: 20130234019
    Abstract: In order to provide a technique for performing global alignment (detecting position shift and rotation of a wafer) stably and automatically using an optical microscope, as a pattern for global alignment, multiple alignment pattern candidates are calculated (107), multiple data for matching are created for each alignment pattern (108), matching is performed with respect to the data for matching for each alignment pattern in descending order of appropriateness as an alignment pattern with an image (113) based on an image signal from the optical microscope (114), and the amount of position shift and the amount of rotation of the wafer are calculated (116) on the basis of the results of matching (115).
    Type: Application
    Filed: November 22, 2011
    Publication date: September 12, 2013
    Inventors: Atsushi Miyamoto, Naoki Hosoya, Toshikazu Kawahara, Akihiro Onizawa
  • Patent number: 8445871
    Abstract: Mutual compatibility is established between the measurement with a high magnification and the measurement in a wide region. A pattern measurement apparatus is proposed which adds identification information to each of fragments that constitute a pattern within an image obtained by the SEM, and which stores the identification information in a predetermined storage format. Here, the identification information is added to each fragment for distinguishing between one fragment and another fragment. According to the above-described configuration, it turns out that the identification information is added to each fragment on the SEM image which has possessed no specific identification information originally. As a result, it becomes possible to implement the SEM-image management based on the identification information.
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: May 21, 2013
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Ryoichi Matsuoka, Akihiro Onizawa, Akiyuki Sugiyama, Hidetoshi Morokuma, Yasutaka Toyoda
  • Publication number: 20100202654
    Abstract: Mutual compatibility is established between the measurement with a high magnification and the measurement in a wide region. A pattern measurement apparatus is proposed which adds identification information to each of fragments that constitute a pattern within an image obtained by the SEM, and which stores the identification information in a predetermined storage format. Here, the identification information is added to each fragment for distinguishing between one fragment and another fragment. According to the above-described configuration, it turns out that the identification information is added to each fragment on the SEM image which has possessed no specific identification information originally. As a result, it becomes possible to implement the SEM-image management based on the identification information.
    Type: Application
    Filed: April 20, 2010
    Publication date: August 12, 2010
    Applicant: HITACHI HIGH-TECHNOLOGIES CORPORATION
    Inventors: Ryoichi MATSUOKA, Akihiro Onizawa, Akiyuki Sugiyama, Hidetoshi Morokuma, Yasutaka Toyoda
  • Patent number: 7732792
    Abstract: Mutual compatibility is established between the measurement with a high magnification and the measurement in a wide region. A pattern measurement apparatus is proposed which adds identification information to each of fragments that constitute a pattern within an image obtained by the SEM, and which stores the identification information in a predetermined storage format. Here, the identification information is added to each fragment for distinguishing between one fragment and another fragment. According to the above-described configuration, it turns out that the identification information is added to each fragment on the SEM image which has possessed no specific identification information originally. As a result, it becomes possible to implement the SEM-image management based on the identification information.
    Type: Grant
    Filed: August 8, 2008
    Date of Patent: June 8, 2010
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Ryoichi Matsuoka, Akihiro Onizawa, Akiyuki Sugiyama, Hidetoshi Morokuma, Yasutaka Toyoda
  • Publication number: 20090039263
    Abstract: Mutual compatibility is established between the measurement with a high magnification and the measurement in a wide region. A pattern measurement apparatus is proposed which adds identification information to each of fragments that constitute a pattern within an image obtained by the SEM, and which stores the identification information in a predetermined storage format. Here, the identification information is added to each fragment for distinguishing between one fragment and another fragment. According to the above-described configuration, it turns out that the identification information is added to each fragment on the SEM image which has possessed no specific identification information originally. As a result, it becomes possible to implement the SEM-image management based on the identification information.
    Type: Application
    Filed: August 8, 2008
    Publication date: February 12, 2009
    Inventors: Ryoichi MATSUOKA, Akihiro Onizawa, Akiyuki Sugiyama, Hidetoshi Morokuma, Yasutaka Toyoda