Patent ID: 7259500
Filing Date: 2007-08-21
Classification: H01L,H03H

Abstract:
1. A piezoelectric device comprising: an element substrate including a piezoelectric element and an electrically conductive pattern connected to the piezoelectric element on a principal surface of the element substrate; a supporting layer arranged at a periphery of the piezoelectric element on the principal surface of the element substrate; a cover covering the supporting layer and arranged to provide a groove inside an external periphery of the element substrate, the groove extending entirely around the external periphery of the element substrate; an insulating reinforcing material arranged to entirely cover portions of the element substrate adjacent to the cover and ranging from the cover to the external periphery of the principal surface of the element substrate; and an electrically conductive member electrically connected to the electrically conductive pattern so as to pass through the cover and the reinforcing material.