Electrical Components
 

Electronic Components

    FPC

    Double-Sided FPC

    The double-sided FPC has two conductive layers that are electrically connected. This provides higher design flexibility compared to single-sided FPCs.

    Double-Sided FPC
    Applications

    Typically utilized for high-density wiring that cannot use single-sided FPCs.

    • Electrical wiring for DSCs, DVCs and laptop PCs
    • Plasma displays, LCD modules
    • Highly flexible parts (i.e., hinge part of mobile phones, etc.)

    Specifications
    • Fine line/space circuit
    • Low spring-back
    • Microsize via hole (LVH: Laser Via Hole)
    • Dynamic feature
    • Electrical noise (EMI) shield
    • High-speed signal transmission (Impedance control)
    • Environmentally friendlly (halogen-free)
    • Flame resistant (UL Standards)

    Various configurations are available; please feel free to contact us for details.

    Structure
    Double-Sided FPC Structure

    Material Thickness (μm)
    Resist film Polyimide 12, 25
    Adhesive Thermal curing type Various thickness
    Cu plating - More than 4
    Cu foil Electrolytic/rolled type 12, 18
    Adhesive Thermal curing type Various thickness
    Base film Polyimide 12, 25
    Adhesive Thermal curing type Various thickness
    Cu foil Electrolytic/rolled type 12, 18
    Cu plating - More than 4
    Adhesive Thermal curing type Various thickness
    Resist Film Polyimide 12, 25
    * The standard composition is shown above.
    (Other types are also available; please contact us for details.)
    Notes

    Double-sided FPCs are generally inferior to single-sided FPCs in thinness, flexibility, and dynamic attributes. However, with careful attention to the structural design and selection of materials, we can raise their quality close to that of the single-sided FPCs.