Piezoelectric device
AssigneeNihon Dempa Kogyo Co., Ltd.
InventorTakehiro Takahashi
Life of this patent
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Abstract
A piezoelectric device (100) comprises: a piezoelectric vibrating piece (101); a frame body (105) separated from piezoelectric vibrating piece by through-hole (108); a piezoelectric frame (10) having a supporting portion (104), a first surface (Me) and a second surface (Mi); a package lid (11) having a first connecting surface (M1) a package base (12), including a mounting surface (M4) for forming a pair of external electrodes (125) and a top surface having a second connecting surface (M2); a first sealing material (LG1) formed between the first connecting surface and the first surface; and a second sealing material (LG2) formed between the second connecting surface and the second surface. The first sealing material or the second sealing material extends to a side surface (M3) of the through-hole.
Claims17
A piezoelectric device, comprising:
- a piezoelectric frame, including a piezoelectric vibrating piece, a frame body surrounding the piezoelectric vibrating piece and separated therefrom by at least one through hole, and a supporting portion for supporting the piezoelectric vibrating piece to the frame body, each piezoelectric frame having a first surface and a second surface;
- a package lid having a first connecting surface, in which at least a part of the first connecting surface opposes to the first surface of the frame body;
- a package base, including a mounting surface for forming a pair of external electrodes and a top surface formed opposite the mounting surface, said top surface including at least a part of a second connecting surface opposed to the second surface;
- a first sealing material formed between the first connecting surface and the first surface of the frame body;
- and
- a second sealing material formed between the second connecting surface and the second surface of the frame body;
- wherein at least one of the first sealing material or the second sealing material extends onto the side surface of the opening through-hole of the frame body.
A piezoelectric device, comprising;
- a piezoelectric vibrating piece that vibrates when electrical voltage is applied;
- a package base having a base recess for mounting the piezoelectric vibrating piece;
- a package lid configured to span said base recess and mate with the package base to form an enclosure for storing the piezoelectric vibrating piece;
- and
- a sealing material formed in a peripheral manner, sealing and bonding the package base and the package lid to form an airtight seal between said lid and said base;
- wherein the sealing material extends onto a side surface of the base recess and said enclosure surrounds said piezoelectric vibrating piece in an airtight manner,
- the package lid comprises a lid recess formed in the same shape as the base recess defined by the package base;
- and the sealing material extends onto a side surface of the lid recess.
Dependencies are inferred from the claim text.