Piezoelectric device and display apparatus including the same
AssigneeLG Display Co., Ltd.
InventorsKiSung Lim, Jaekyung Kang, DongRyul Jung, Sujin Chang
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Abstract
A piezoelectric device and a display apparatus including the same are provided. A piezoelectric device includes: a first piezoelectric unit including a vibration-generating layer configured to vibrate at an input frequency based on a sound signal corresponding to the input frequency, and a second piezoelectric unit including: an air gap in the first piezoelectric unit, the air gap having a certain volume, and an air path connecting the air gap to an outer portion of the vibration-generating layer, the air path being configured to output a vibration.
Claims22
A piezoelectric device, comprising:
- a first piezoelectric unit comprising a vibration-generating layer configured to vibrate at an input frequency based on a sound signal corresponding to the input frequency;
- and
- a second piezoelectric unit comprising:
- an air gap in the first piezoelectric unit, the air gap having a certain volume;
- and
- an air path connecting the air gap to an outer portion of the vibration-generating layer, the air path being configured to output a vibration.
A display apparatus, comprising:
- a substrate,
- a piezoelectric device on the substrate, the piezoelectric device being configured to generate a vibration, the piezoelectric device comprising:
- a first piezoelectric unit comprising a vibration-generating layer configured to vibrate at an input frequency based on a sound signal corresponding to the input frequency;
- and
- a second piezoelectric unit comprising:
- an air gap in the first piezoelectric unit, the air gap having a certain volume;
- and
- an air path connecting the air gap to an outer portion of the vibration-generating layer, the air path being configured to output a vibration;
- and
- a pixel array layer comprising:
- a thin-film transistor on the piezoelectric device;
- and
- a light-emitting device connected to the thin-film transistor.
Dependencies are inferred from the claim text.