Patents by Inventor Shouji Nara

Shouji Nara 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).

  • Apparatus and method for inspecting picture elements of an active matrix type display board
    Patent number: 6891532
    Abstract: The present invention provides a picture element inspecting apparatus and method for an active matrix type display that is constituted by an LCD array device or an EL array device, which is capable of canceling the irregularities in source switches 13, the noise caused by device driving signals, and the irregularities in devices in the measurement apparatus, and enhancing the accuracy of a picture element inspection.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: May 10, 2005
    Assignee: Wintest Corporation
    Inventors: Shouji Nara, Masatoshi Itoh, Makoto Ookuma
  • Apparatus and method for evaluating organic EL display
    Patent number: 6633135
    Abstract: It is an object of the present invention to provide an apparatus and method for evaluating an organic EL display, with which there is a simple drive circuit used for testing an organic EL display 10, evaluation of high reliability can be achieved, and an evaluation of the organic EL display 10 itself is performed prior to the installation of finished product drive circuits to the organic EL display 10, which makes it possible to suppress the decrease in yield caused by dealing with defective products due to the evaluation results.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: October 14, 2003
    Assignee: Wintest Corporation
    Inventors: Shouji Nara, Masatoshi Itoh, Makoto Ookuma, Tomoharu Innami
  • Apparatus and method for inspecting picture elements of active matrix type display
    Publication number: 20020154108
    Abstract: The present invention provides a picture element inspecting apparatus and method for an active matrix type display that is constituted by an LCD array device or an EL array device, which is capable of canceling the irregularities in source switches 13, the noise caused by device driving signals, and the irregularities in devices in the measurement apparatus, and enhancing the accuracy of a picture element inspection.
    Type: Application
    Filed: April 22, 2002
    Publication date: October 24, 2002
    Applicant: Wintest Corporation
    Inventors: Shouji Nara, Masatoshi Itoh, Makoto Ookuma
  • Apparatus and method for evaluating organic EL display
    Publication number: 20020047565
    Abstract: It is an object of the present invention to provide an apparatus and method for evaluating an organic EL display, with which there is a simple drive circuit used for testing an organic EL display 10, evaluation of high reliability can be achieved, and an evaluation of the organic EL display 10 itself is performed prior to the installation of finished product drive circuits to the organic EL display 10, which makes it possible to suppress the decrease in yield caused by dealing with defective products due to the evaluation results.
    Type: Application
    Filed: July 3, 2001
    Publication date: April 25, 2002
    Applicant: Wintest Corporation
    Inventors: Shouji Nara, Masatoshi Itoh, Makoto Ookuma, Tomoharu Innami