ASSEMBLING METHOD OF PACKAGE

摘要

PROBLEM TO BE SOLVED: To provide the assembling method of a package capable of surely assembling the small-sized package without lowering yield. SOLUTION: An adhesive is applied on an electrode to attach a crystal vibrator on a base. A cover is overlapped on the base in an inert gas atmosphere. The base is heated with a heater. The cover is pressurized toward the base to impart ultrasonic vibration to the cover. The cover and the base are fixed.