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Detail
Registered PIEZOELECTRIC SPEAKER HAVING WEIGHT AND METHOD OF PRODUCING THE SAME
- Inventors
- Hye Jin Kim, Yang Woo Seok, Kim Jongdae
- Application No.
- 13651228 (2012.10.12)
- Publication No.
- 20130301856 (2013.11.14)
- Registration No.
- 9445200 (2016.09.13)
- Country
- UNITED STATES
- Project Code
- 12MB2400, Development of self-powered smart sensor node platform for smart&green building, Kim Jongdae
- Abstract
- 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 Keywords
- Electrical signal, Frequency response(FreRes), Frequency response characteristics, Piezoelectric Device, Piezoelectric speaker, Response characteristics, flexible material, piezoelectric layer