IP Library Granted Patent US 7,436,106
Granted Patent B2
US 7,436,106 · App. 11/730,901 · Granted Oct 14, 2008

Piezoelectric device

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Quick Facts
Patent No.
US 7,436,106
App. No.
11/730,901
Granted
Oct 14, 2008
Kind
B2
Abstract

A piezoelectric device includes: a piezoelectric element; a piezoelectric element package containing the piezoelectric element; a connecting terminal disposed on the bottom of the piezoelectric element package; a circuit element connected to the bottom of the piezoelectric element package; a insulating resin portion covering the circuit element; and an external electrode formed on the surface of the resin portion, wherein: in a plan view seen from the direction, along which the external electrode is formed, an inclined portion is provided in a part of an area of the resin portion, in which the external electrode is to be formed, the inclined portion extending from the bottom surface of the piezoelectric element package towards the surface of the resin portion; and the connecting terminal on the bottom of the piezoelectric element package and the external electrode of the resin portion are electrically connected to each other by means of a connecting electrode formed on the inclined portion.

Claims (11)

1. A piezoelectric device, comprising:

a piezoelectric element;

a piezoelectric element package containing the piezoelectric element;

a connecting terminal disposed on the bottom of the piezoelectric element package;

a circuit element connected to the bottom of the piezoelectric element package;

a insulating resin portion covering the circuit element; and

an external electrode formed on the surface of the resin portion, wherein:

in a plan view from the direction along which the external electrode is formed, an inclined portion is provided in a part of an area of the resin portion, in which the external electrode is to be formed, the inclined portion extending from the bottom surface of the piezoelectric element package towards the surface of the resin portion; and

the connecting terminal on the bottom of the piezoelectric element package and the external electrode of the resin portion are electrically connected to each other by means of a connecting electrode formed on the inclined portion.

2. The piezoelectric device according to claim 1 , the connecting electrode being formed by an electrode obtained by applying and fixing conductive ink on the resin portion.

3. The piezoelectric device according to claim 1 , the connecting electrode being formed by an electrode obtained by applying and fixing conductive paste on the resin portion.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 8, 2011
From: EPSON TOYOCOM CORPORATION
To: SEIKO EPSON CORPORATION
Reel/Frame 026717/0436 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 4, 2007
From: MARUYAMA, YASUO
To: EPSON TOYOCOM CORPORATION
Reel/Frame 019169/0365 →