Display apparatus comprising both coil type and piezoelectric speakers
An apparatus includes a vibration member, a supporting member on a rear surface of the vibration member, a first vibration apparatus connected with the rear surface of the vibration member, and a second vibration apparatus between the vibration member and the supporting member to overlap the first vibration apparatus.
1 . An apparatus comprising:
a vibration member;
a supporting member on a rear surface of the vibration member and including at least one first contact hole;
a first vibration apparatus connected with the rear surface of the vibration member and between the supporting member and the vibration member, the first vibration apparatus configured to vibrate such that the vibration member vibrates;
a second vibration apparatus between the first vibration apparatus and the supporting member, the second vibration apparatus overlapping the first vibration apparatus and including at least one second contact hole that overlaps the at least one first contact hole, and the second vibration apparatus configured to vibrate such that the vibration member vibrates;
a control board at a rear surface of the second vibration apparatus and configured to control a vibration of the first vibration apparatus and a vibration of the second vibration apparatus; and
a signal connection member including a portion disposed in the at least one first contact hole and another portion disposed in the at least one second contact hole,
wherein the first vibration apparatus is connected with the control board via the signal connection member passing through the at least one first contact hole and the at least one second contact hole.
2 . The apparatus of claim 1 , wherein the first vibration apparatus is configured to output a sound of a first pitched sound band, and the second vibration apparatus is configured to output a sound of a second pitched sound band that is different from the first pitched sound band.
3 . The apparatus of claim 2 , wherein the first pitched sound band comprises a high pitched sound band, and the second pitched sound band comprises a low pitched sound band that is lower than the high pitched sound band.
4 . The apparatus of claim 1 , wherein the first vibration apparatus is between the vibration member and the second vibration apparatus.
5 . The apparatus of claim 1 , wherein the first vibration apparatus contacts the rear surface of the vibration member.
6 . The apparatus of claim 1 , further comprising:
a connection member between the vibration member and the first vibration apparatus, the connection member connecting together the vibration member and the first vibration apparatus.
7 . The apparatus of claim 1 , wherein the second vibration apparatus is spaced apart from the rear surface of the vibration member.
8 . The apparatus of claim 1 , wherein the second vibration apparatus is in contact with a rear surface of the first vibration apparatus.
9 . The apparatus of claim 1 , wherein the first vibration apparatus is connected with the control board through a first signal path and the second vibration apparatus is connected with the control board through a second signal path that is different from the first signal path.
10 . The apparatus of claim 1 , wherein the first vibration apparatus is connected to the control board and the second vibration apparatus is connected to the control board through a same signal path.
11 . The apparatus of claim 1 , wherein the control board further comprises a signal connector configured to apply a vibration signal to the first vibration apparatus and the second vibration apparatus.
12 . The apparatus of claim 11 , wherein the signal connector is connected with the first vibration apparatus and the second vibration apparatus.
13 . The apparatus of claim 1 , wherein the signal connection member comprises at least one of a signal cable, a probe pin, or a pogo pin.
14 . The apparatus of claim 1 , wherein the first vibration apparatus comprises:
a vibration layer;
a first electrode layer at a first surface of the vibration layer; and
a second electrode layer at a second surface of the vibration layer that is opposite the first surface of the vibration layer such that the vibration layer is between the first electrode layer and the second electrode layer.
15 . The apparatus of claim 14 , wherein the vibration layer comprises:
a plurality of inorganic material portions having a piezoelectric characteristic; and
an organic material portion between the plurality of inorganic material portions.
16 . The apparatus of claim 14 , wherein the vibration layer comprises a piezoelectric material.
17 . The apparatus of claim 14 , wherein the signal connection member directly contacts the first electrode layer and the second electrode layer.
18 . The apparatus of claim 14 , wherein the first vibration apparatus further comprises a signal contact pad connected with the first electrode layer and the second electrode layer, and the signal connection member contacts the signal contact pad.
19 . The apparatus of claim 1 , wherein the supporting member comprises at least one first hole overlapping the first vibration apparatus, and the second vibration apparatus is in the at least one first hole of the supporting member and is connected to the supporting member.
20 . The apparatus of claim 19 , wherein the second vibration apparatus further comprises:
a frame connected with the supporting member;
a magnet on the frame;
a bobbin around the magnet; and
a coil wound around the bobbin.
21 . The apparatus of claim 20 , wherein the frame comprises:
a first frame; and
a second frame connected to the supporting member, the second frame protruding from an edge of the first frame,
wherein the magnet, the bobbin, and the coil are on the first frame.
22 . The apparatus of claim 21 , wherein the second vibration apparatus further comprises a frame cover covering a rear surface of the first frame and a rear surface of the second frame.
23 . The apparatus of claim 22 , further comprising:
a heat dissipation member between the frame cover and the rear surface of the first frame.
24 . The apparatus of claim 21 , wherein the second vibration apparatus further comprises a plurality of second holes overlapping the at least one first hole.
25 . The apparatus of claim 24 , wherein the plurality of second holes are in the first frame and overlap the bobbin and the coil.
26 . The apparatus of claim 21 ,
wherein the control board includes a signal connector, the signal connector applying a vibration signal generated by the control board to the first vibration apparatus and the second vibration apparatus,
wherein the second vibration apparatus is electrically connected to the signal connector.
27 . The apparatus of claim 26 , wherein the control board is at a rear surface of the second frame, the at least one first contact hole overlaps the signal connector, and the at least one second contact hole is disposed in the second frame to overlap the at least one first contact hole.
28 . The apparatus of claim 27 , wherein the first vibration apparatus is electrically connected to the signal connector through the signal connection member.
29 . The apparatus of claim 1 , wherein the vibration member comprises one or more materials of metal, plastic, fiber, leather, wood, cloth, rubber, carbon, glass, or paper.
30 . A display apparatus comprising:
a display panel including a front surface and a rear surface that is opposite the front surface;
a first type of vibration apparatus on the rear surface of the display panel, the first type of vibration apparatus configured to vibrate;
a second type of vibration apparatus that is different from the first type of vibration apparatus and overlapping the first type of vibration apparatus such that the first type of vibration apparatus is between the display panel and the second type of vibration apparatus, the second type of vibration apparatus configured to vibrate;
a supporting member on the rear surface of the display panel such that the first type of vibration apparatus is between the display panel and the supporting member, the supporting member including at least one first contact hole; and
a control board at a rear surface of the second type of vibration apparatus and configured to control a vibration of the first type of vibration apparatus and a vibration of the second type of vibration apparatus,
wherein the display panel is configured to emit sound responsive to the first type of vibration apparatus vibrating or the second type of vibration apparatus vibrating,
wherein the second type of vibration apparatus includes at least one second contact hole that overlaps the at least one first contact hole, and
wherein the first type of vibration apparatus is connected with the control board via a signal connection member having a portion disposed in the at least one first contact hole and another portion disposed in the at least one second contact hole.
31 . The display apparatus of claim 30 , wherein the first type of vibration apparatus comprises a piezoelectric type vibration apparatus and the second type of vibration apparatus comprises a coil type vibration apparatus.
32 . The display apparatus of claim 30 , wherein the display apparatus is configured to emit sound having a first pitch responsive to vibration of the first type of vibration apparatus and is configured to emit sound having a second pitch that is lower than the first pitch responsive to vibration of the second type of vibration apparatus.