The challenge
Thin Film Electroluminescent (TFEL) Displays are operated with 200V voltage and the thin film insulator layer needs to be fully pin-hole free to avoid breakdown. Sputtering was used in production but had problems with pin-holes.
The customer
Lumineq Displays.
Beneq solution
An ALD nanolaminate film composed of alternating Al2O3 and TiO2 layers (ATO) was developed and taken into production and became the only viable option for this application.