Display apparatus
A display apparatus includes a display panel including a plurality of pixels and configured to display an image, a roller on which the display panel is wound or unwound, a rolling module including a structure connected to an upper portion of the display panel and configured to wind or unwind the display panel according to a folding or unfolding of the structure, and a vibration device at the structure. The vibration device is configured to vibrate the display panel when unwound from the roller. The vibration device includes a vibration generator that contacts a contact surface of the display panel and is configured to move to maintain the contact with the contact surface.
1. A display apparatus, comprising:
a display panel including a plurality of pixels, the display panel being configured to display an image;
a roller on which the display panel is wound or unwound;
a rolling module including a structure connected to an upper portion of the display panel, the rolling module being configured to wind or unwind the display panel according to a folding or unfolding of the structure; and
a vibration device at the structure, the vibration device being configured to vibrate the display panel when unwound from the roller, the vibration device including a vibration generator that contacts a contact surface of the display panel, the vibration generator being configured to move to maintain the contact with the contact surface.
2. The display apparatus of claim 1 , further comprising a housing module including the roller.
3. The display apparatus of claim 1 , wherein the vibration generator is configured to rotate around one or more of: a first direction, a second direction, and a third direction, and move along one or more of: the first direction, the second direction, and the third direction, according to a shape of the contact surface of the display panel.
4. The display apparatus of claim 1 , wherein:
the rolling module further includes a driving unit configured to fold or unfold the structure;
the structure includes:
a first link part including a first portion connected to the upper portion of the display panel;
a second link part including a first portion connected to the driving unit; and
a link connection part rotatably connected to each of:
a second portion of the first link part; and
a second portion of the second link part; and
the vibration device is at the link connection part.
5. The display apparatus of claim 4 , wherein:
the vibration device further includes:
a sound box connected to the link connection part, the sound box including a space; and
a movement member in the space, the movement member flexibly supporting the vibration generator; and
the movement member is deformed according to a movement of the vibration generator based on a shape of the contact surface of the display panel.
6. The display apparatus of claim 5 , wherein the movement member includes a flexible material.
7. The display apparatus of claim 5 , wherein the movement member includes:
a body frame connected to the sound box; and
a supporting portion extending from an inner surface of the body frame, the supporting portion flexibly supporting the vibration generator.
8. The display apparatus of claim 7 , wherein the vibration device further includes a heat sink connected to a rear surface of the vibration generator.
9. The display apparatus of claim 8 , wherein the heat sink is configured to move according to a movement of the supporting portion in a space between a rear surface of the sound box and the movement member.
10. The display apparatus of claim 8 , wherein:
the supporting portion includes an opening overlapping the vibration generator; and
the vibration device further includes an adhesive member adhering the heat sink to the vibration generator.
11. The display apparatus of claim 5 , wherein the movement member includes a plurality of elastic members connected between the vibration generator and the sound box.
12. The display apparatus of claim 11 , wherein the vibration device further includes a heat sink on a rear surface of the vibration generator.
13. The display apparatus of claim 1 , wherein the vibration generator includes:
a module frame supported by a movement member in the vibration device;
a bobbin in the module frame;
a magnet inside or outside the bobbin;
a coil wound around the bobbin; and
a vibration member connected to the bobbin, the vibration member contacting the display panel.
14. The display apparatus of claim 13 , wherein the vibration member includes:
a vibration plate on an upper portion of the bobbin; and
a magnetic plate on the vibration plate, the magnetic plate contacting the display panel.
15. The display apparatus of claim 14 , wherein the vibration member further includes a coating layer on the magnetic plate, the coating layer directly contacting the display panel.
16. The display apparatus of claim 4 , wherein the vibration device includes:
a first vibration device at a first side of the link connection part of the structure; and
a second vibration device at a second side of the link connection part of the structure.
17. A display apparatus, comprising:
a display panel including a plurality of pixels, the display panel being configured to display an image;
a back cover on a rear surface of the display panel;
a roller on which the display panel is wound or unwound;
a rolling module including a structure connected to an upper portion of the display panel, the rolling module being configured to wind or unwind the display panel according to a folding or unfolding of the structure; and
a vibration device at the structure, the vibration device being configured to vibrate the display panel when unwound from the roller, the vibration device including:
a sound box connected to the structure; and
a vibration generator movable in the sound box, the sound box contacting the back cover.
18. The display apparatus of claim 17 , further comprising a housing module including the roller.
19. The display apparatus of claim 17 , wherein the back cover includes a mesh structure.
20. The display apparatus of claim 17 , wherein the vibration generator includes:
a module frame in the sound box;
a bobbin in the module frame;
a magnet inside or outside the bobbin;
a coil wound around the bobbin; and
a vibration member connected to the bobbin, the vibration member contacting the display panel.
21. The display apparatus of claim 20 , wherein the vibration member includes:
a vibration plate on an upper portion of the bobbin; and
a magnetic plate on the vibration plate, the magnetic plate contacting the display panel.
22. The display apparatus of claim 21 , wherein the vibration member further includes a coating layer on the magnetic plate, the coating layer directly contacting the display panel.
23. The display apparatus of claim 20 , wherein:
the vibration device further includes a movement member in a space in the sound box, the movement member being configured to flexibly support the vibration generator; and
the vibration generator is configured to move according to a shape of a contact surface of the display panel.
24. The display apparatus of claim 23 , wherein the vibration device further includes a heat sink on a rear surface of the vibration generator.
25. The display apparatus of claim 1 , wherein:
the rolling module further includes a driving unit, the driving unit being configured to fold or unfold the structure;
the structure includes first and second structures connected between the upper portion of the display panel and the driving unit, the first and second structures being parallel to each other;
each of the first and second structures includes:
a first link part including a first portion connected to the upper portion of the display panel;
a second link part including a first portion connected to the driving unit; and
a link connection part rotatably connected to each of:
a second portion of the first link part; and
a second portion of the second link part; and
the vibration device is at the link connection part.
26. The display apparatus of claim 25 , wherein the vibration device includes:
a first vibration device at a first side of the link connection part of the first structure;
a second vibration device at a second side of the link connection part of the first structure;
a third vibration device at a first side of the link connection part of the second structure; and
a fourth vibration device at a second side of the link connection part of the second structure.
27. The display apparatus of claim 25 , wherein the vibration device includes:
a first vibration device at a first side or a second side of the link connection part of the first structure; and
a second vibration device at a first side or a second side of the link connection part of the second structure.
28. The display apparatus of claim 26 , wherein:
the first vibration device is configured to move in a rectilinear direction with folding and unfolding of the first structure;
the second vibration device is configured to move in a diagonal direction with the folding and unfolding of the first structure;
the third vibration device is configured to move in a rectilinear direction with folding and unfolding of the second structure; and
the fourth vibration device is configured to move in a diagonal direction with the folding and unfolding of the second structure.