Patent ID: 6472798
Filing Date: 2002-10-29
Classification: H04R

Abstract:
A piezoelectric acoustic component comprising:a substantially square piezoelectric diaphragm having four substantially equal length sides, and having first and second diaphragm electrodes exposed on one of the end portions thereof and vibrating in a length bending mode; an insulating case having a top wall portion, four side wall portions, and supporting portions inside of two opposing side walls; and a substrate in the shape of a plate having a first and a second external electrodes thereon; wherein said diaphragm is stored within the case with the surface exposing the first and the second diaphragm electrodes facing toward the opposite side of the case from the top wall portion, two opposite sides of the diaphragm being supported on said supporting portion with supporting material, and the clearance between the diaphragm and the remaining two side walls are sealed with a resilient sealing material, such that an acoustic space is defined between the diaphragm and the top wall portion of the case, an end portion of at least one of said four side wall portions of said case is adhered onto said substrate, the first diaphragm electrode on said diaphragm is electrically connected to the first external electrode with a resilient conductive adhesive, and said second diaphragm electrode is electrically connected to the second external electrode with a resilient conductive adhesive.