From our mobile phones to digital cameras, Virtual Reality headsets, televisions and tablets – high-definition displays are a part of our everyday lives. Behind each of these screens are alloys. INVAR® SFD by Aperam is a highly-clean alloy developed specifically for OLED technology. INVAR® SFD provides the controlled expansion required by the tools used for the fabrication of OLED displays. This alloy has also expansion and mechanical properties required to ensure a reliable encapsulation of the OLED displays.