Patents Assigned to Nittok Denko Corporation
  • Patent number: 7998552
    Abstract: A dicing die-bonding film in which the adhesive properties during the dicing step and the peeling properties during the pickup step are controlled so that both become good, and a production method thereof, are provided. The dicing die-bonding film in the present invention is a dicing die-bonding film having a pressure-sensitive adhesive layer on a base material and a die bond layer on the pressure-sensitive adhesive layer, in which the arithmetic mean roughness X (?m) on the pressure-sensitive adhesive layer side in the die bond layer is 0.015 ?m to 1 ?m, the arithmetic mean roughness Y (?m) on the die bond layer side in the pressure-sensitive adhesive layer is 0.03 ?m to 1 ?m, and the absolute value of the difference of the X and Y is 0.015 or more.
    Type: Grant
    Filed: January 28, 2008
    Date of Patent: August 16, 2011
    Assignee: Nittok Denko Corporation
    Inventors: Yasuhiro Amano, Sadahito Misumi, Takeshi Matsumura