| 摘要 |
A flexible-rigid printed circuit combination comprises a rigid sheet (1) of electrically insulating pre-impregnated bonding material divided with an intervening flexible polyimide or polyester sheet (3) joined by a narrow region of edge overlap to each part. Sheets of copper foil are adhered to each face of the three sheets and subjected to photoresist patterning and etching processes to produce conductor tracks (5a, 5b). Overcoats (6) each with an adhesive layer (7) are applied over the flexible sheet to cover the tracks thereon. The ends are built up by sheets (8) of said bonding material and laminate sheets (11) with metal conductors (12) thereon. Thus, plated through-holes or pillars can be provided through the rigid ends, without touching the flexible material, to connect the metal tracks. |
