Display apparatus

Patent metadata

Field	Value
Publication number	US-10698243-B2
Application number	US-201816107021-A
Country	US
Kind code	B2
Filing date	Aug 21, 2018
Priority date	Nov 20, 2017
Publication date	Jun 30, 2020
Grant date	Jun 30, 2020

Abstract

A display apparatus includes a display module displaying an image, a rear structure supporting the display module, a vibration generating device vibrating the display module, and a stiff member disposed on a rear surface of the display module. Accordingly, a sound pressure level corresponding to a high frequency domain is prevented from being reduced, thereby enhancing the quality of a sound output to a region in front of a display panel.

First claim

What is claimed is:

1. A display apparatus, comprising:
a display module configured to display an image;
a rear structure on the display module;
a vibration generating device configured to vibrate the display module; and
a stiff member disposed on a rear surface of the display module;
wherein the stiff member is disposed on a rear surface of a backlight unit in a long-side lengthwise direction of the backlight unit, thereby improving an electromagnetic force performance of the vibration generating device.

2. The display apparatus of claim 1 , wherein the stiff member overlaps at least one edge of the display module.

3. The display apparatus of claim 2 , further comprising an adhesive member disposed between the display module and the rear structure to attach the display module on the rear structure.

4. The display apparatus of claim 3 , wherein
the display module comprises:
a pair of first edges parallel to a first direction; and
a pair of second edges parallel to a second direction, and
the adhesive member comprises:
a first adhesive member disposed in the pair of first edges; and
a second adhesive member disposed in the pair of second edges.

5. The display apparatus of claim 4 , wherein the stiff member comprises a first stiff member disposed on the rear surface of the display module in parallel with the first adhesive member.

6. The display apparatus of claim 5 , wherein the stiff member further comprises a second stiff member disposed on the rear surface of the display module in parallel with the second adhesive member.

7. The display apparatus of claim 5 , wherein the stiff member further comprises a third stiff member disposed in parallel with the second direction to overlap a center of the display module.

8. The display apparatus of claim 4 , wherein the stiff member comprises a first stiff member disposed between the display module and the first adhesive member.

9. The display apparatus of claim 8 , wherein the stiff member comprises a second stiff member disposed between the display module and the second adhesive member.

10. The display apparatus of claim 1 , wherein the stiff member comprises aluminum (Al), copper (Cu), or stainless steel, or a tempered plastic compound, which is high in stiffness.

11. The display apparatus of claim 3 , wherein the stiff member is higher in stiffness than the adhesive member.

12. The display apparatus of claim 1 , wherein the stiff member contacts a front surface of the rear structure.

13. The display apparatus of claim 1 , wherein the stiff member is spaced apart from a front surface of the rear structure.

14. The display apparatus of claim 1 , wherein
the display module comprises a left region, a right region, and a middle region, and
the vibration generating device comprises:
a first sound generating module overlapping the left region;
a second sound generating module overlapping the right region; and
a third sound generating module overlapping the middle region.

15. The display apparatus of claim 14 , wherein the first and second sound generating modules transfer a vibration having a high frequency domain to a left edge and a right edge of the display module, and the third sound generating module transfers a vibration having a low frequency domain to the middle region of the display module.

16. The display apparatus of claim 1 , wherein the display module comprises:
a display panel; and
a backlight unit disposed on the rear surface of the display panel.

17. The display apparatus of claim 16 , wherein the display module further comprises a module adhesive member disposed between an edge of the display panel and an edge of the backlight unit.

Assignees

• Lg Display Co Ltd

Inventors

• Yoon Seunghwan
• Kim Kiduk
• Lim Dongkyun
• Lee Jaihyuk

Classifications

• H04N5/642

  Disposition of sound reproducers · CPC title

• G02F1/133308 Primary

  Support structures for LCD panels, e.g. frames or bezels · CPC title

• H04R7/045

  using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion · CPC title

• H04R2499/15

  Transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops · CPC title

• G02F2202/28

  Adhesive materials or arrangements · CPC title