The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 11, 2025
Filed:
Apr. 25, 2023
Aker Technology Co., Ltd., Taichung, TW;
Ray-Hua Horng, Taichung, TW;
Yi-Lun Lin, Taichung, TW;
AKER TECHNOLOGY CO., LTD., Taichung, TW;
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.