Patents by Inventor Kenshi ISHIWATARI

Kenshi ISHIWATARI 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: 9970885
    Abstract: An inspection apparatus and an inspection method capable of performing an inspection more accurately are provided. An inspection apparatus according to the present invention includes a light source 10 that illuminates a sample 30 in which a pattern is formed, a detector 11 that detects light reflected from the sample 30 illuminated by the light source, and a processing device 50 that performs an inspection based on a correlation between a brightness value of a sample image obtained by the detector and a size in a surface shape or a size in a width direction of the pattern of the sample 30. The processing device 50 performs the inspection based on a summation value obtained by adding up brightness values of sample images with weights, the sample images being obtained under a plurality of shooting conditions.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: May 15, 2018
    Assignee: Lasertec Corporation
    Inventors: Hiroto Nozawa, Kuniaki Takeda, Kenshi Ishiwatari, Takamasa Tsubouchi, Ryoichiro Satoh
  • Publication number: 20150144769
    Abstract: An inspection apparatus and an inspection method capable of performing an inspection more accurately are provided. An inspection apparatus according to the present invention includes a light source 10 that illuminates a sample 30 in which a pattern is formed, a detector 11 that detects light reflected from the sample 30 illuminated by the light source, and a processing device 50 that performs an inspection based on a correlation between a brightness value of a sample image obtained by the detector and a size in a surface shape or a size in a width direction of the pattern of the sample 30. The processing device 50 performs the inspection based on a summation value obtained by adding up brightness values of sample images with weights, the sample images being obtained under a plurality of shooting conditions.
    Type: Application
    Filed: November 21, 2014
    Publication date: May 28, 2015
    Inventors: Hiroto NOZAWA, Kuniaki TAKEDA, Kenshi ISHIWATARI, Takamasa TSUBOUCHI, Ryoichiro SATOH