| 摘要 |
There are provided a piezoelectric resonator and an electrode structure thereof. The piezoelectric resonator includes: a piezoelectric body oscillated according to an electrical signal; and first and second electrodes each including first and second electrode layers stacked on respective both surfaces of the piezoelectric body, wherein the first electrode layer includes one or more selected from the group consisting of chromium (Cr), nickel (Ni), titanium (Ti), and an alloy including any one thereof, the ratio of the thickness of the first electrode layer to the thickness of the first or second electrode is 3% to 30%; and the second electrode layer includes copper (Cu) or an alloy including copper (Cu), and the ratio of the thickness of the second electrode layer to the thickness of the first or second electrode is 70% to 97%.
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