PIEZOELECTRIC DEVICE, AND METHOD FOR MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a piezoelectric device for transmitting conventionally equivalent character information to an observer by forming a small character even in a transparent package. SOLUTION: The piezoelectric device 100 is composed of a lid member with a transparent material, a piezoelectric vibration piece, and a base member. The piezoelectric device includes a shading film 14 formed on the lid member, and an identification display code 15 formed on the shading film. The shading film of the lid member faces a base member side, and the shading film includes metal having gas adsorption characteristics. COPYRIGHT: (C)2010,JPO&INPIT