1.
    发明专利
    未知

    公开(公告)号:DE69324439D1

    公开(公告)日:1999-05-20

    申请号:DE69324439

    申请日:1993-10-29

    Applicant: IBM

    Abstract: A lithographic imaging process is provided for use in the manufacture of integrated circuits. A substrate is coated with a polymeric film comprising a vinyl polymer, a photosensitive acid generator, and acid labile groups. It is then heated to typically just above the glass transition temperature of the polymer, but below the cleavage temperature of the acid labile groups. The film is then expose imagewise to radiation to generate free acid, and the film is once more heated, again to typically just above the glass transition temperature of the polymer, but below the cleavage temperature of the acid labile groups. Finally the image is developed. The process provides protection to the photoresist film from airborne chemical contaminants.

Patent Agency Ranking