Shielding Films & ESD

EMI shielding films from CPFilms span the electrical resistance range from 2.5 to 100 ohms per square, and are engineered to provide the highest possible optical transmission. The combination of low surface resistance and high visible light transmission makes our films ideal for EMI shields of displays and other applications that require shield transparency.

We produce three types of conductive EMI shielding coatings: silver-based, gold-based, and indium/tin oxide (ITO). Our EMI films provide more than 20 dB of attenuation throughout the frequency range typically encountered in electronic devices.

Adequate shielding of the lower frequencies (10 kHz - 100 MHz) can generally be achieved via use of our 30 - 100 ohms per square ITO films, which provide more than 30 dB attenuation when properly grounded. Our high-transmission gold coating AuARE™ high-transmission gold films(PDF) cover a 10 - 30 ohms resistance range, and provide more than 40 dB attenuation over the same frequency range.

For effective shielding at very high frequencies, select our AgHT™ silver-based films(PDF) which provide greater than 75% light transmission, and 4 - 8 ohms per square surface resistance. Properly grounded, these films provide 20 - 44 dB attenuation over a frequency range of 1 - 10 GHz. These products are available as standard offerings on optical-grade polyester rolls.

Even more attenuation is achievable with our FM specialty gold film(PDF), which features a surface resistance of 2.5 ohms per square and 20% - 25% light transmission.

For more information on EMI shielding products, click here(PDF). To learn about specifically engineered for plasma display panels, click here(PDF). We also invite you to get in touch with one of our EMI shielding specialists to discuss your special needs.