Patents by Inventor Masahiro Yoneyama

Masahiro Yoneyama 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).

  • Publication number: 20120196075
    Abstract: A resin composition of the present invention is used for providing a spacer 104 having a grid-like shape at a planar view thereof between a semiconductor wafer 101? and a transparent substrate 102. The resin composition includes a constituent material containing an alkali soluble resin, a thermosetting resin and a photo initiator. In the case where a semiconductor wafer 101? and a transparent substrate 102 are bonded together through a spacer 104 formed on a substantially overall surface thereof to obtain a bonded body 2000, and then the semiconductor wafer makes one-fifth thickness, a warpage of the bonded body 2000 is 3,000 ?m or less. Further, it is preferred that the warpage of the bonded body 2000 before the process thereof is 500 ?m or less, and an increasing ratio of the warpage of the bonded body 2000 after the process thereof is 600% or less.
    Type: Application
    Filed: October 14, 2010
    Publication date: August 2, 2012
    Inventors: Toyosei Takahashi, Masakazu Kawata, Masahiro Yoneyama, Hirohisa Dejima, Fumihiro Shiraishi, Toshihiro Sato
  • Publication number: 20120187553
    Abstract: A method of manufacturing a semiconductor wafer bonding product according to the present invention includes: a step of preparing a spacer formation film including a support base having a sheet-like shape and a spacer formation layer provided on the support base and having photosensitivity; a step of attaching the spacer formation layer to a semiconductor wafer having one surface from a side of the one surface; a step of forming a spacer by subjecting the spacer formation layer to exposure and development to be patterned and removing the support base; and a step of bonding a transparent substrate to a region of the spacer where the removed support base was provided so that transparent substrate is included within the region. This makes it possible to manufacture a semiconductor wafer bonding product in which the semiconductor wafer and the transparent substrate are bonded together through the spacer uniformly and reliably.
    Type: Application
    Filed: September 8, 2010
    Publication date: July 26, 2012
    Applicant: SUMITOMO BAKELITE COMPANY LIMITED
    Inventors: Masahiro Yoneyama, Masakazu Kawata, Toyosei Takahashi, Hirohisa Dejima, Fumihiro Shiraishi, Toshihiro Sato
  • Publication number: 20120168970
    Abstract: A method of manufacturing a semiconductor wafer bonding product according to the present invention includes: a step of preparing a spacer formation film including a support base having a sheet-like shape and a spacer formation layer provided on the support base and having photosensitivity; a step of attaching the spacer formation layer to a semiconductor wafer having one surface from a side of the one surface; a step of forming a spacer by subjecting exposure and development to the spacer formation layer to be patterned and removing the support base; a step of bonding a transparent substrate to a region of the spacer, with which the removed support base made contact, so as to be included within the region. This makes it possible to manufacture a semiconductor wafer bonding product in which the semiconductor wafer and the transparent substrate are bonded together through the spacer uniformly and reliably.
    Type: Application
    Filed: September 13, 2010
    Publication date: July 5, 2012
    Inventors: Toshihiro Sato, Masakazu Kawata, Masahiro Yoneyama, Toyosei Takahashi, Hirohisa Dejima, Fumihiro Shiraishi
  • Publication number: 20120032284
    Abstract: According to one aspect of the present invention, a film for a resin spacer (10) comprises an adhesive layer (12) made of a resin composition and a cover film (14) covering a surface of the adhesive layer (12). In the above-described film for a resin spacer (10), an adhesion force C1 between the adhesive layer (12) and the cover film (14) and an adhesion force D between the adhesive layer (12) and a silicone resin are set so as to satisfy the condition C1>D. Consequently, it is possible to reduce resin adherence to a cutting table at the time of cutting the film for a resin spacer (10).
    Type: Application
    Filed: March 25, 2010
    Publication date: February 9, 2012
    Inventors: Hirohisa Dejima, Masakazu Kawata, Masahiro Yoneyama, Toyosei Takahashi, Fumihiro Shiraishi, Toshihiro Sato
  • Publication number: 20120012989
    Abstract: A method of manufacturing a semiconductor wafer bonding product according to the present invention, including: a step of preparing a spacer formation film including a support base and a spacer formation layer; a step of attaching the spacer formation layer of the spacer formation film to a semiconductor wafer; a step of selectively exposing the spacer formation layer with an exposure light via a mask, which is placed at a side of the support base of the spacer formation film, so as to be passed through the support base; a step of removing the support base; a step of developing the spacer formation layer to form a spacer on the semiconductor wafer; and a step of bonding a transparent substrate to a surface of the spacer opposite to the semiconductor wafer.
    Type: Application
    Filed: February 15, 2010
    Publication date: January 19, 2012
    Applicant: SUMITOMO BAKELITE COMPANY LIMITED
    Inventors: Toshihiro Sato, Masakazu Kawata, Masahiro Yoneyama, Toyosei Takahashi, Hirohisa Dejima, Fumihiro Shiraishi
  • Publication number: 20110316127
    Abstract: A spacer formation film is adapted to be used for forming a spacer defining air-gap portions on a side of one surface of a semiconductor wafer and by being cut into a desired shape, the spacer formation film includes: a support base having a sheet-like shape; a spacer formation layer provided on the support base and having a bonding property, the spacer formation layer formed of a material containing an alkali soluble resin, a thermosetting resin and a photo polymerization initiator; and a cutting line along which the spacer formation film is to be cut, wherein the spacer formation layer is provided inside the cutting line so that a peripheral edge thereof is not overlapped to the cutting line.
    Type: Application
    Filed: February 19, 2010
    Publication date: December 29, 2011
    Inventors: Fumihiro Shiraishi, Mazakazu Kawata, Masahiro Yoneyama, Toyosei Takahashi, Hirohisa Dejima, Toshihiro Sato
  • Publication number: 20110316116
    Abstract: An object of the present invention is to provide a photosensitive resin composition which leaves a small amount of resin residues after patterning by light-exposure and development and can reduce condensation between the semiconductor wafer and the transparent substrate under a high temperature and high humidity environment, an adhesive film made of the photosensitive resin composition and a light-receiving device including the adhesive film. The photosensitive resin composition of the present invention contains an alkali soluble resin (A), a photopolymerization initiator (B) and a compound (C) having a phenolic hydroxyl group and a carboxyl group.
    Type: Application
    Filed: April 8, 2010
    Publication date: December 29, 2011
    Inventors: Toshihiro Sato, Masakazu Kawata, Masahiro Yoneyama, Toyosei Takahashi, Hirohisa Dejima, Fumihiro Shiraishi
  • Publication number: 20110304034
    Abstract: A semiconductor wafer bonding product according to the present invention includes: a semiconductor wafer; a transparent substrate provided at a side of a functional surface of the semiconductor wafer; a spacer provided between the semiconductor wafer and the transparent substrate; and a bonded portion continuously provided along a periphery of the semiconductor wafer, the transparent substrate being bonded to the semiconductor wafer through the bonded portion. It is preferred that a minimum width of the bonded portion is 50 ?m or more.
    Type: Application
    Filed: February 15, 2010
    Publication date: December 15, 2011
    Inventors: Hirohisa Dejima, Masakazu Kawata, Masahiro Yoneyama, Toyosei Takahashi, Fumihiro Shiraishi, Toshihiro Sato