US 8,873,776 B2
PIEZOELECTRIC SPEAKERGeneral
US 8,873,776 B2
PIEZOELECTRIC SPEAKER
Tech Center:
2600 Communications
Examiner:
Brian Ensey
Art Unit:
2656 Videophones and Telephonic Communications; Audio Signals; Digital Audio Data Processing; Linguistics, Speech Processing and Audio Compression
Agent:
Inventors:
Hye-Jin KIM; Woo Seok Yang; Jongdae Kim
Priority:
11/04/11
Filed:
11/04/11
Granted:
10/28/14
Expiration:
03/08/33
Abstract
Disclosed is a piezoelectric speaker including: a piezoelectric layer that converts electrical signals into oscillation and outputs sound; an electrode that is formed on a top or a bottom of the piezoelectric layer to apply the electrical signals to the piezoelectric layer; an acoustic diaphragm that is made of a hetero material including a first acoustic diaphragm and a second acoustic diaphragm and is attached to the bottom of the piezoelectric layer on which the electrode is formed; and a frame attached in a form enclosing a side of the acoustic diaphragm.
Cooperative Patent Classification (CPC)
H04H04R2307/025H04R