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公开(公告)号:JPH10291834A
公开(公告)日:1998-11-04
申请号:JP10165397
申请日:1997-04-18
Applicant: JSR CORP
Inventor: UDAGAWA TADAHIKO , OKAMOTO KENJI , KAMII HIDEYUKI , KUMANO KOJI
Abstract: PROBLEM TO BE SOLVED: To obtain a transfer film having large film thickness and large surface area, excellent in the uniformity of film thickness, free from pin hole or crack, giving a dielectric layer excellent also in surface smoothness and capable of completely decomposing and removing a binder even by a low temp. firing by forming a film forming material layer containing a glass powder and the binder on a supporting film. SOLUTION: The film forming material layer 20, which contains the glass powder of a mixture preferably of 60-90 wt.% lead oxide, 5-20 wt.% boron oxide and 5-20 wt.% silicon oxide, and the binder containing preferably an acrylic resin (e.g. copolymer of butyl methacrylate and n-lauryl methacrylate) and has preferably 10-100 μfilm thickness, is formed on the supporting film 10 (e.g. polyethylene terephthalate) having preferably 15-100 μ film thickness. If necessary, an easily strippable covering film 30 is further provided on the surface of the film forming material layer 20.