Piezoelectric micro speaker
AssigneeSamsung Electronics Co., Ltd.
InventorsDong-kyun KIM, Jun-sik HWANG, Seok-whan CHUNG, Byung-gil JEONG
Life of this patent
Estimating the term…
Abstract
Provided is a piezoelectric micro speaker. The piezoelectric micro speaker includes a device plate having a front cavity, a front plate having a radiation hole which communicates with the front cavity in front of the device plate, and a rear plate having a rear cavity and a vent portion. A rear portion of the device plate forms a wall of the vent portion. The device plate includes at least one first vent hole which communicates with the vent portion, and the front plate includes at least one second vent hole which communicates with the first vent hole.
Claims11
A piezoelectric micro speaker comprising:
- a device comprising:
- a device plate comprising a front cavity therein,
- a diaphragm disposed on a rear surface of the device plate overlapping the front cavity, and
- a piezoelectric actuator disposed on a rear surface of the diaphragm;
- a front plate disposed on a front surface of the device plate, the front plate comprising a radiation hole which communicates with the front cavity;
- and
- a rear plate disposed on a rear surface of the device, the rear plate comprising a rear cavity formed in a front surface of the rear plate, and a vent portion which is a space which communicates with the rear cavity,
- wherein the device plate further comprises at least one first vent hole which communicates with the vent portion, and the front plate further comprises at least one second vent hole which communicates with the at least one first vent hole.
A piezoelectric micro speaker comprising:
- a device comprising:
- a device plate comprising a front cavity therein,
- a diaphragm disposed on a rear surface of the device plate overlapping the front cavity, and
- a piezoelectric actuator disposed on a rear surface of the diaphragm;
- a front plate disposed on a front surface of the device plate, the front plate comprising a radiation hole which communicates with the front cavity;
- a rear plate disposed on a rear surface of the device, the rear plate comprising a rear cavity formed in a front surface of the rear plate;
- and
- at least one vent hole which penetrates through a side surface of the micro speaker and which communicates with the rear cavity.
Dependencies are inferred from the claim text.