Crystal oscillator and method of making the same
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United States of America
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Mar 11, 2025
Grant Date -
Nov 30, 2023
app pub date -
Apr 25, 2023
filing date -
Apr 25, 2023
priority date (Note) -
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Abstract
A crystal oscillator includes a piezoelectric substrate having a thinned portion with opposite upper and lower surfaces respectively defining upper and lower surface work portions, and at least one side portion having at least one recessed portion with a bottom surface flush with the upper surface of the thinned portion. A top electrode layer has a top work portion disposed on the upper surface work portion, and a top extension extending from the top work portion onto the bottom surface of the recessed portion. A bottom electrode layer has a bottom work portion disposed on the lower surface work portion, and a bottom extension extending from the bottom work portion toward the one end of the thinned portion and then bending upward and inward onto the bottom surface of the recessed portion. A method of making the crystal oscillator is also disclosed.
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