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US 12,004,373 B2Granted
Display apparatus
AssigneeLG Display Co., Ltd.
InventorsYuSeon Kho, Yong-Su Ham, YongWoo Lee
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Abstract
A display apparatus includes a display panel configured to display an image and a plurality of vibration generating devices configured to vibrate the display panel. Each of the plurality of vibration generating devices includes a plurality of first portions having a piezoelectric characteristic and a plurality of second portions disposed near the plurality of first portions to have an expansion coefficient, and the plurality of vibration generating devices have different expansion coefficients.
Claims32
A display apparatus, comprising:
- a display panel configured to display an image;
- and
- a plurality of vibration generating devices configured to vibrate the display panel,
- wherein each of the plurality of vibration generating devices comprises:
- a plurality of first portions having a piezoelectric characteristic;
- and
- a plurality of second portions disposed near the plurality of first portions to have a negative or zero expansion coefficient,
- wherein the plurality of vibration generating devices comprise a first vibration generating device, a second vibration generating device, and a third vibration generating device, and
- wherein an expansion coefficient of the first vibration generating device is less than an expansion coefficient of the second vibration generating device, and an expansion coefficient of the second vibration generating device is less than an expansion coefficient of the third vibration generating device.
6 more elements
A display apparatus, comprising:
- a display panel displaying an image;
- and
- a plurality of vibration generating devices vibrating the display panel,
- wherein:
- each of the plurality of vibration generating devices comprises:
- a plurality of piezoelectric portions having a piezoelectric characteristic;
- and
- a plurality of expansion portions disposed near the plurality of piezoelectric portions,
- the plurality of vibration generating devices are implemented to have different frequency characteristics,
- the plurality of vibration generating devices comprise a first vibration generating device, a second vibration generating device, and a third vibration generating device, and
- an expansion coefficient of each of the plurality of expansion portions of the first vibration generating device is less than an expansion coefficient of each of the plurality of expansion portions of the second vibration generating device, and the expansion coefficient of each of the plurality of expansion portions of the second vibration generating device is less than an expansion coefficient of each of the plurality of expansion portions of the third vibration generating device.
8 more elements
Dependencies are inferred from the claim text.