Patent ID: 11342897

Abstract:
Hermeticity of an annular sealing bonding material to seal a vibrating part is improved. In the crystal resonator 10, a resonator-plate-side first bonding pattern 251 annularly formed on a crystal resonator plate 2 is bonded to a sealing-member-side first bonding pattern 321 annularly formed on a first sealing member 3, and a resonator-plate-side second bonding pattern 252 annularly formed on the crystal resonator plate 2 is bonded to a sealing-member-side second bonding pattern 421 annularly formed on a second sealing member 4. Thus, annular bonding materials 11a and 11b, which hermetically seal a vibrating part 22 causing piezoelectric resonance, are formed. Inner peripheral edge parts 111a and 111b and outer peripheral edge parts 112a and 112b of the bonding materials 11a and 11b are formed denser than intermediate parts 113a and 113b between the inner and outer peripheral edge parts 111a and 112a, and between the inner and outer peripheral edge parts 111b and 112b.