4.
    发明专利
    未知

    公开(公告)号:DE69402108D1

    公开(公告)日:1997-04-24

    申请号:DE69402108

    申请日:1994-04-22

    Applicant: IBM

    Abstract: Metal is selectively etched from a substrate by: (i) applying an acrylic negative photoresist to the substrate, (ii) imaging and developing the photoresist, (iii) exposing the photoresist to actinic radiation of wavelength 200-310 nm or 2.4-8 microns, and (iv) contacting the photoresist-coated substrate with an etchant so as to remove portions of the metal not covered with photoresist.

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