PIEZOELECTRIC MICROPHONE, SPEAKER AND MICROPHONE-SPEAKER INTEGRATED DEVICE AND MANUFACTURING METHOD THEREOF

摘要

A piezoelectric microphone, a speaker, a microphone-speaker integrated device, and a manufacturing method thereof are provided to deliver a sound to a specific position by using an interference phenomenon of the sound. An external square electrode is alternately formed with order of an anode(401) and a cathode(403). A pattern branched from each electrode is arranged as a serial structure. A serial polarization direction is conversely formed in a pattern structure. An outermost pattern maintains an existing parallel pattern. A pattern branched from each electrode parallel forms a second pattern. The pattern is formed in an outer part of a microphone. The pattern is serially connected, and efficiently outputs a voltage.