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성과물

특허 검색
구분 출원국
출원년도 ~ 키워드

상세정보

등록 압전 스피커

압전 스피커
이미지 확대
발명자
김혜진, 양우석, 김종대
출원번호
13651228 (2012.10.12)
공개번호
20130301856 (2013.11.14)
등록번호
9445200 (2016.09.13)
출원국
미국
협약과제
12MB2400, 스마트&그린 빌딩용 자가충전 지능형 센서노드 플랫폼 핵심기술 개발, 김종대
초록
The present disclosure relates to a piezoelectric speaker having a weight that enables a frequency response characteristic of the piezoelectric speaker to be uniform by disposing a weight of a flexible material on an acoustic diaphragm or on and below an acoustic diaphragm of the piezoelectric speaker, thereby enhancing flatness of sound. The piezoelectric speaker having the weight includes a piezoelectric device having a piezoelectric layer and an electrode formed on or on and below the piezoelectric layer to apply an electrical signal to the piezoelectric layer; an acoustic diaphragm having a wider area than the piezoelectric device and bonded on one surface of the piezoelectric device; a frame disposed in a form that surrounds a side surface of the acoustic diaphragm; and a weight disposed above the acoustic diaphragm or above and below the acoustic diaphragm on which the piezoelectric device is disposed to thereby control a vibration.
KSP 제안 키워드
Electrical signal, Frequency response(FreRes), Frequency response characteristics, Piezoelectric Device, Piezoelectric speaker, Response characteristics, flexible material, piezoelectric layer