[IEEE 2016 IEEE 37th International Electronics Manufacturing Technology (IEMT) & 18th Electronics Materials and Packaging (EMAP) Conference - Georgetown, Penang, Malaysia (2016.9.20-2016.9.22)] 2016 IEEE 37th International Electronics Manufacturing Technology (IEMT) & 18th Electronics Materials and Packaging (EMAP) Conference - An investigation on micro-via drilling on ceramic substrates by a picosecond laser