Display device with piezoelectric actuator
The present disclosure relates to a display device including a piezoelectric film type actuator, the display device having a structure in which a groove is provided in a rear surface of a metal layer for supporting and encapsulate a rear surface of a display panel and the piezoelectric film type actuator is disposed in the groove. Accordingly, the display device may reduce the overall thickness and improve heat dissipation performance.
1. A display device comprising:
a metal layer having a rear surface in which a groove is provided;
a display panel disposed on a front surface of the metal layer;
a drive disposed in the groove of the metal layer;
a piezoelectric film type actuator disposed at least one side of the drive in the groove of the metal layer, and electrically connected with the drive;
a heat dissipation sheet disposed in the groove and on a front surface of the drive and a front surface of the piezoelectric film type actuator; and
an enclosure provided to cover a rear surface of the drive and a rear surface of the piezoelectric film type actuator.
2. The display device of claim 1 , further comprising:
an adhesive layer disposed between the piezoelectric film type actuator and the enclosure.
3. The display device of claim 1 , wherein a heat conductivity of the heat dissipation sheet is higher than a heat conductivity of the metal layer.
4. The display device of claim 1 , wherein the heat dissipation sheet is a carbon-based heat dissipation sheet.
5. The display device of claim 1 , further comprising:
a plurality of adhesive layers disposed between the heat dissipation sheet and the metal layer and between the heat dissipation sheet and the piezoelectric film type actuator, respectively.
6. The display device of claim 1 , wherein the enclosure is made of a same material as the metal layer.
7. The display device of claim 1 , further comprising:
a heating element disposed on one side of the display panel or the metal layer,
wherein the groove is disposed closer to another side opposite to the one side where the heating element is disposed.
8. The display device of claim 1 , further comprising:
an adhesive layer including a getter material, and disposed between the metal layer and the display panel.