IP Library › Granted Patent US 11,412,322

Granted Patent B2

US 11,412,322 · App. 16/804,090 · Granted Aug 9, 2022

Display apparatus

Inventors: Sungtae Lee (Paju-si, KR); Teh Hyeon Kim (Paju-si, KR); YeongRak Choi (Paju-si, KR); Seungwan Ryu (Paju-si, KR); KwanHo Park (Paju-si, KR)

Assignee: LG Display Co., Ltd.

H04R1/26 H04R1/028 H04R7/04 H04R7/26 H04R9/025 H04R9/046 H04R9/06 H04R17/00 H04R2499/15

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Quick Facts

Patent No.: US 11,412,322
App. No.: 16/804,090
Granted: Aug 9, 2022
Kind: B2

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Abstract

A display apparatus includes a display module including a display panel configured to display an image, a rear cover on a rear surface of the display module, and a sound generating module at the rear cover and configured to vibrate the display module to generate sound, and a rear surface of the sound generating module is covered by the rear cover.

Claims (148)

1. A display apparatus, comprising:

a display module including a display panel configured to display an image;

a rear cover on a rear surface of the display module; and

a sound generating module at the rear cover and configured to vibrate the display module to generate sound,

wherein a rear surface of the sound generating module is covered by the rear cover, and

wherein the sound generating module comprises:

a module structure at the rear cover; and

a vibration device at the module structure and configured to vibrate the display module.

2. The display apparatus of claim 1 , wherein the sound generating module further comprises a connection member between the module structure and the display module.

3. The display apparatus of claim 1 , wherein the module structure and the vibration device are modularized as one element.

4. The display apparatus of claim 1 , wherein the vibration device comprises:

a base plate at the module structure;

a bobbin on the base plate and configured to vibrate the display module;

a magnet inside or outside the bobbin;

a coil wound around the bobbin;

an edge frame at an outer portion of the base plate; and

a damper connected between the edge frame and the bobbin.

5. The display apparatus of claim 1 , further comprising a heat diffusion member between the vibration device and the display module.

6. The display apparatus of claim 1 , wherein the rear cover comprises:

a first rear cover including a module accommodating part; and

a second rear cover on a rear surface of the first rear cover, and

the sound generating module is accommodated into the module accommodating part of the first rear cover.

7. The display apparatus of claim 6 , wherein the sound generating module further comprises a connection member between the module structure and the display module, and

wherein the module structure is accommodated into the module accommodating part of the first rear cover.

8. The display apparatus of claim 7 , wherein the module structure comprises:

a border portion under the connection member; and

a receiving part accommodated into the module accommodating part of the first rear cover and disposed at the second rear cover to protrude from a portion other than the border portion to the rear cover.

9. The display apparatus of claim 1 , wherein the rear cover comprises:

a first rear cover; and

a second rear cover on a rear surface of the first rear cover, and the sound generating module is accommodated into the first rear cover.

10. The display apparatus of claim 1 , wherein:

the rear cover comprises at least one module accommodating part, and

the display apparatus further comprises at least one cover covering the at least one module accommodating part into which the sound generating module is not accommodated.

11. The display apparatus of claim 1 , wherein the vibration device comprises a piezoelectric composite.

12. The display apparatus of claim 1 , wherein the rear cover comprises a hole overlapping the at least one sound generating module.

13. The display apparatus of claim 12 , wherein the sound generating module is accommodated into the hole of the rear cover.

14. The display apparatus of claim 1 , wherein:

the vibration device further comprises a hollow portion; and

the module structure comprises a groove overlapping the vibration device.

15. The display apparatus of claim 1 , wherein the module structure comprises a cable hole through that a signal cable connected to the vibration device passes.

16. A display apparatus, comprising:

a display module including a display panel configured to display an image;

a rear cover on a rear surface of the display module; and

a sound generating module at the rear cover and configured to vibrate the display module to generate sound,

wherein a rear surface of the sound generating module is covered by the rear cover, and

wherein the sound generating module comprises:

a module structure at the rear cover;

a vibration transfer member on the module structure and connected to the display module;

a connection member between the vibration transfer member and the module structure; and

a vibration device at the module structure and configured to vibrate the vibration transfer member.

17. The display apparatus of claim 16 , wherein the connection member comprises at least one of a bent portion and a protrusion portion toward the vibration device.

18. The display apparatus of claim 16 , wherein the vibration device includes a plurality of vibration devices at the module structure and configured to vibrate the vibration transfer member, and

wherein the sound generating module further comprises a partition between the plurality of vibration devices.

19. The display apparatus of claim 16 , wherein the rear cover comprises:

a first rear cover; and

a second rear cover on a rear surface of the first rear cover, and

wherein the sound generating module is accommodated between the first rear cover and the second rear cover.

20. The display apparatus of claim 16 , wherein the rear cover comprises:

a first rear cover including a module accommodating part; and

a second rear cover on a rear surface of the first rear cover, and

wherein the sound generating module is accommodated into the module accommodating part of the first rear cover.

21. The display apparatus of claim 16 , wherein the rear cover comprises a hole overlapping the at least one sound generating module.

22. The display apparatus of claim 21 , wherein the sound generating module is accommodated into the hole of the rear cover.

23. The display apparatus of claim 16 , wherein the module structure comprises:

a border portion under the connection member; and

24. The display apparatus of claim 16 , wherein the module structure comprises a cable hole through that a signal cable connected to the vibration device passes.

25. The display apparatus of claim 16 , wherein the module structure and the vibration device are modularized as one element.

26. The display apparatus of claim 16 , wherein the vibration device comprises:

a base plate at the module structure;

a bobbin on the base plate and configured to vibrate the display module;

a magnet inside or outside the bobbin;

a coil wound around the bobbin;

an edge frame at an outer portion of the base plate; and

a damper connected between the edge frame and the bobbin.

27. The display apparatus of claim 16 , wherein:

the vibration device further comprises a hollow portion; and

the module structure comprises a groove overlapping the vibration device.

28. The display apparatus of claim 16 , wherein the vibration device comprises a piezoelectric composite.

29. The display apparatus of claim 16 , further comprising a heat diffusion member between the vibration device and the display module.

30. A display apparatus, comprises:

a display module including a display panel configured to display an image;

a rear cover on a rear surface of the display module; and

a sound generating module at the rear cover and configured to vibrate the display module to generate sound,

wherein a rear surface of the sound generating module is covered by the rear cover,

wherein the rear cover comprises:

a first rear cover; and

a second rear cover on a rear surface of the first rear cover, and

wherein the sound generating module is accommodated between the first rear cover and the second rear cover.

31. The display apparatus of claim 30 , wherein:

the first rear cover includes a module accommodating part; and

the sound generating module is accommodated into the module accommodating part of the first rear cover.

32. The display apparatus of claim 31 , wherein the sound generating module further comprises a module structure at the rear cover,

wherein the module structure is accommodated into the module accommodating part of the first rear cover.

33. The display apparatus of claim 32 , wherein the module structure comprises:

a border portion under the connection member; and

34. The display apparatus of claim 30 , wherein the sound generating module further comprises:

a module structure at the rear cover; and

a vibration device at the module structure and configured to vibrate the display module.

35. The display apparatus of claim 34 , wherein the sound generating module further comprises a connection member between the module structure and the display module.

36. The display apparatus of claim 34 , wherein the module structure and the vibration device are modularized as one element.

37. The display apparatus of claim 34 , wherein the vibration device comprises:

a base plate at the module structure;

a bobbin on the base plate and configured to vibrate the display module;

a magnet inside or outside the bobbin;

a coil wound around the bobbin;

an edge frame at an outer portion of the base plate; and

a damper connected between the edge frame and the bobbin.

38. The display apparatus of claim 34 , wherein the vibration device comprises a piezoelectric composite.

39. The display apparatus of claim 34 , further comprising a heat diffusion member between the vibration device and the display module.

40. A display apparatus, comprising:

a display module configured to display an image;

a rear cover on a rear surface of the display module with a gap space therebetween; and

a sound generating module in the gap space and configured to vibrate the display module to generate sound,

wherein the sound generating module comprises:

a module structure at the rear cover; and

a vibration device at the module structure and configured to vibrate the display module, and

the module structure and the vibration device are modularized as one element.

41. The display apparatus of claim 40 , wherein the sound generating module further comprises:

a vibration transfer member on the module structure and connected to the display module; and

a connection member between the vibration transfer member and the module structure, and

wherein the sound generating module is configured to vibrate the vibration transfer member to vibrate the display module.

42. The display apparatus of claim 40 , wherein the rear cover comprises:

a first rear cover including a module accommodating part; and

a second rear cover on a rear surface of the first rear cover, and

wherein the module structure is accommodated into the module accommodating part of the first rear cover.

43. The display apparatus of claim 42 , wherein:

the sound generating module further comprises a connection member between the module structure and the display module, and

the module structure comprises:

a border portion under the connection member; and

44. A display apparatus, comprising:

a display module configured to display an image;

a rear cover on a rear surface of the display module, the rear cover including a plurality of module accommodating parts;

at least one sound generating module accommodated into at least one of the plurality of module accommodating parts and configured to vibrate the display module to generate sound; and

at least one cover covering at least one of the plurality of module accommodating parts, and

wherein the at least one sound generating module comprises:

a module structure accommodated into at least one of the plurality of module accommodating parts; and

a vibration device at the module structure and configured to vibrate the display module.

45. The display apparatus of claim 44 , wherein the rear cover comprises:

a first rear cover including the plurality of module accommodating parts; and

a second rear cover on a rear surface of the first rear cover.

46. The display apparatus of claim 44 , wherein the at least one sound generating module further comprises a connection member between the module structure and the display module, and

wherein the module structure comprises:

a border portion supporting the connection member; and

a receiving part accommodated into a corresponding module accommodating part of the first rear cover and disposed at the second rear cover to protrude from a portion other than the border portion to the rear cover.

47. The display apparatus of claim 44 , wherein the module structure and the vibration device are modularized as one element.

Assignments (1)

ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 2, 2020

From: LEE, SUNGTAE; KIM, TEH HYEON; CHOI, YEONGRAK; RYU, SEUNGWAN; PARK, KWANHO

To: LG DISPLAY CO., LTD.

Reel/Frame 051975/0370 →

Priority Claims (2)

KR 10-2019-0024025 · Feb 28, 2019 · national

KR 10-2019-0180146 · Dec 31, 2019 · national

Continuity (1)

Related Publication 20200280796A1 · Sep 3, 2020

Cited By (3)

US 12,335,674 US 12,339,702 US 12,349,302