SHIELD FILM, SHIELDED PRINTED WIRING BOARD, AND METHOD FOR MANUFACTURING SHIELD FILM

• Main Authors: TAJIMA HIROSHI, WATANABE MASAHIRO, YAMAUCHI SHIRO, UENO KENJI
• Format: Patent
• Language: English; Japanese
• Published: 30.05.2019
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; CONDUCTORS; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INSULATORS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; METALLURGY; PERFORMING OPERATIONS; PRINTED CIRCUITS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TRANSPORTING

To provide: a shield film which satisfactorily shields electric field waves, magnetic field waves and electromagnetic waves traveling from one side to the other side of the shield film, has good transmission characteristics and is also excellent in sliding characteristics; a shielded printed wiring board; and a method for manufacturing a shield film.SOLUTION: In order to provide a shield film which satisfactorily shields electric field waves, magnetic field waves and electromagnetic waves traveling from one side to the other side of the shield film, has good transmission characteristics and is also excellent in sliding characteristics, a shielded printed wiring board, and a method for manufacturing a shield film, a metal layer 3 having a layer thickness of 0.5-5 μm and an anisotropic conductive adhesive layer 4 having anisotropic conductivity securing an electrical conductive state only in the thickness direction are provided in a lamination state to satisfactorily shield electric field waves, magnetic field waves and electromagnetic waves traveling from one side to the other side of a shield film and also to achieve excellent sliding characteristics.SELECTED DRAWING: Figure 1 【課題】シールドフィルムの一方面側から他方面側に進行する電界波、磁界波および電磁波を良好に遮蔽し、良好な伝送特性を有すると共に、摺動性にも優れたシールドフィルム、シールドプリント配線板、及び、シールドフィルムの製造方法を提供することを目的とする。【解決手段】シールドフィルムの一方面側から他方面側に進行する電界波、磁界波および電磁波を良好に遮蔽し、良好な伝送特性を有すると共に、摺動性にも優れたシールドフィルム、シールドプリント配線板、及び、シールドフィルムの製造方法を提供するために、層厚が０．５μｍ〜５μｍの金属層３と、厚み方向のみだけ電気的な導電状態が確保された異方導電性を有する異方導電性接着剤層４とを積層状態で設けて、シールドフィルムの一方面側から他方面側に進行する電界波、磁界波および電磁波を良好に遮蔽することができると共に、摺動性にも優れるようにした。【選択図】図１