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US 7,608,987 B2Granted
AT cut quartz crystal resonator element and method for manufacturing the same
AssigneeEpson Toyocom Corporation
InventorsMatsutaro Naito, Yoshiyuki Aoshima, Kenji Komine
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Abstract
An AT cut quartz crystal resonator element includes a quartz crystal element piece having an exciting part formed from an AT cut quartz crystal plate in a rectangular shape having an X-axis direction of a quartz crystal set to a long side, and an exciting electrode formed on each of front and back main surfaces of the exciting part, in which each side surface in the longitudinal direction of the exciting part is composed of two faces, an m-face of a quartz crystal and a crystal face other than the m-face.
Claims4
An AT cut quartz crystal resonator element comprising:
- a quartz crystal element piece having an exciting part formed from an AT cut quartz crystal plate in a rectangular shape, the rectangular shape having four sides, each side including a side surface, having an X-axis direction of a quartz crystal set to a long side of the four sides having two ends;
- and
- an exciting electrode formed on each of front and back main surfaces of the exciting part, wherein:
- each side surface at the two ends of the long side of the exciting part is composed of two faces, an m-face of a quartz crystal and a crystal face other than the m-face.
1 more element
Dependencies are inferred from the claim text.