Spray-on inks are targeting package-level EMI shielding.. Jetted inks are also being proposed for in-package EMI isolation between individual dies in a multi-die package especially for high-frequency devices. Some suppliers propose micron-sized, prioritising cost and maturity. Flat flakes offer higher conductivity if aligned well. Others develop nano or even particle-free inks, offering the thinnest solution.. Most offer a hybrid solution, siting somewhere between full nano to full micro and full spherical to full flake.. Some.. mechanisms to fine-tune layer thickness post-deposition to locally boost performance in EMI hotspots.
Conductive inks can shield specific components, https://www.idtechex.com/en/research-report/conductive-ink-m...