1.
    发明专利
    未知

    公开(公告)号:DE1915084A1

    公开(公告)日:1970-04-02

    申请号:DE1915084

    申请日:1969-03-25

    Applicant: IBM

    Abstract: 1,256,756. Photographic materials. INTERNATIONAL BUSINESS MACHINES CORP. June 6, 1969 [June 17, 1968], No.28637/69. Heading G2C. [Also in Division B6] A photo-sensitive material comprises a synthetic or natural isoprene rubber containing photo-resist and a plasticizer which is an ester of molecular weight less than 500. Specified plasticizers are mono- or dialkyl or -alkyl phthalates, maleates or adipates. The specified sensitizer for the resist is an azide. The materials are used to produce semi-conductors using an oxide coated silica wafer as support or are used to produce printing plates.

    2.
    发明专利
    未知

    公开(公告)号:DE1915085A1

    公开(公告)日:1970-03-05

    申请号:DE1915085

    申请日:1969-03-25

    Applicant: IBM

    Abstract: 1,262,513. Improvements in photo-resist adhesion. INTERNATIONAL BUSINESS MACHINES CORP. June 23, 1969 [July 2, 1968], No.31561/69. Heading G2C. A coating of photo-resist material is applied to an oxide surface with a hexa-alkyldisilazane containing adhesive. The surface may be a silicon oxide surface, and the hexa-alkyldisilazane may be hexamethyl- or hexaethyldisilazane. The photoresist material preferably contains polyvinyl annaniate, polyisoprene, natural rubber resin, formaldehyde novolak, cinnamylidene or polyacrylic ester, and may be a partially cyclized polymer of cis-1, 4-isoprene having an average molecular weight of 60 000 to 70 000 and an azide photoinitiator. The oxide surface may be precoated with the adhesive and the photo-resist material applied to the adhesive, or the adhesive may be admixed with the photo-resist material and the admixture applied to the oxide surface. The invention is described principally in terms of preparing semi-conductor devices, but has general applicability to any process which requires application of a photo-resist to an oxide surface. This invention prevents the tendency of the exposed and developed photo-resist coating to curl away from the substrate.

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