Rogue Valley Microdevices' silicon nitride mask technology is playing a critical role in enabling it through precise submicron alignment and patterning—sub-micron registration in a thermal evaporator that a conventional metal shadow mask cannot match. Precision-patterned silicon nitride membrane shadow masks. eMagin needed a MEMS foundry that could handle low volumes with exceptionally high precision and quality. The large foundries weren’t interested in working with eMagin because the product volume was small. Rogue Valley Microdevices (RVM) was different: a foundry built to partner closely at low volume and high mix without compromising on precision. That partnership has now been in place for more than a decade. All of eMagin’s dPd products are based on RVM’s masks today—work that demands submicron alignment in a thermal evaporator and high-precision processing methods.
