Development of Glass-ceramic Flat Plat Package Sealed by Lead-free Sealing Glass at 280 deg C

摘要

NEC has developed a new glass-ceramic material for the flat package of crystal devices. As for hermetic sealing of the lid, NEC used the flit glass made material, but recently, for a viewpoint of environmental improvement, harmful materials such as lead are demanded to cut down its use. So NEC has developed the lead-free flit glass for hermetic sealing and applied to NEC's glass-ceramic flat package. NEC confirmed reliability of the lead-free sealing glass used for the flat package. This lead-free sealing glass can be sealed at 280 deg C, lower than current lead glass about 40～100 deg C. So NEC can make more efficient crystal devices using NEC's flat package sealed by the lead-free sealing glass.