Shielding a flex circuit can be accomplished through multiple methods. Shields are designed and used for EMI and ESD considerations as well as impedance requirements.
PFC recommends 4 types of shielding:
- Copper clad
- Copper cross hatch
- Silver paste/epoxy
- EMI Thermoplastic shielding film
Copper has the best shielding characteristics. Silver allows more flexibility and at a slightly lower cost. Shielding film is most flexible but a higher cost solution.
- Most flexible
Example of conductor ink (silver) shielding