Patents by Inventor Toshihiko Shindoo

Toshihiko Shindoo 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: 7901846
    Abstract: A pellicle of the present invention is provided with a silicon crystal film, the absorption coefficient of which is 0.005/nm or lower with respect to light having a wavelength of 13.5 nm, as a pellicle film. The silicon crystal film is an indirect transition type semiconductor film and, therefore, the optical absorption coefficient thereof is relatively low. In particular, a single-crystal silicon film has a lower absorption coefficient than an amorphous silicon film and a polysilicon film. Thus, it is easy to obtain desired transmissivity required of a pellicle film for EUV from the single-crystal silicon film. Such a pellicle film as described above can be fabricated from an SOI film obtained by thin-filming an SOI substrate (including an SOQ substrate and an SOG substrate).
    Type: Grant
    Filed: October 15, 2008
    Date of Patent: March 8, 2011
    Assignee: Shin-Etsu Chemical Co., Ltd.
    Inventors: Yoshihiro Kubota, Shoji Akiyama, Toshihiko Shindoo
  • Publication number: 20090104544
    Abstract: A pellicle of the present invention is provided with a silicon crystal film, the absorption coefficient of which is 0.005/nm or lower with respect to light having a wavelength of 13.5 nm, as a pellicle film. The silicon crystal film is an indirect transition type semiconductor film and, therefore, the optical absorption coefficient thereof is relatively low. In particular, a single-crystal silicon film has a lower absorption coefficient than an amorphous silicon film and a polysilicon film. Thus, it is easy to obtain desired transmissivity required of a pellicle film for EUV from the single-crystal silicon film. Such a pellicle film as described above can be fabricated from an SOI film obtained by thin-filming an SOI substrate (including an SOQ substrate and an SOG substrate).
    Type: Application
    Filed: October 15, 2008
    Publication date: April 23, 2009
    Applicant: SHIN-ETSU CHEMICAL CO., LTD.
    Inventors: Yoshihiro KUBOTA, Shoji AKIYAMA, Toshihiko SHINDOO