发明名称 FLEXIBLE PRINTED WIRING BOARD
摘要 PURPOSE:To provide excellent reliability and to enhance a density of an electronic apparatus by alternately arranging signal wires, ground wires in parallel between two flexible insulating layers, and forming a shielding layer on the outer surface of the insulating layer. CONSTITUTION:Signal wires 3 and ground wires 4 are alternately adhered on a flexible insulating layer 1 through an adhesive layer 2a, and a second flexible insulating layer 5 is laminated on the wires 3 and the wires 4 through an adhesive layer 2b. Further, shielding layers 6, 61 are laminated on the outer surfaces of the layers 1, 5. All the wires 4 are electrically connected to the layers 6, 61 via through holes 7 formed at a metal layer 72 at the inner wall surface 71 of the hole. Thus, a crosstalk between the wires 3 can be prevented by the wires 4 disposed between the wires 3. A space electromagnetic wave can be shut OFF from the wires 3 by the layers 6, 61.
申请公布号 JPH04313300(A) 申请公布日期 1992.11.05
申请号 JP19910077946 申请日期 1991.04.10
申请人 SUMITOMO ELECTRIC IND LTD 发明人 HASEGAWA HIROSHI
分类号 H05K1/02;H05K1/00;H05K3/46;H05K9/00 主分类号 H05K1/02
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