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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
패밀리
 
패밀리 특허 목록
구분 특허 출원국 KIPRIS
등록 질량체를 가진 압전 스피커 및 그 제조 방법 대한민국 KIPRIS