Display panel, bracket and display device including the same

Patent metadata

Field	Value
Publication number	US-10671114-B2
Application number	US-201815988990-A
Country	US
Kind code	B2
Filing date	May 24, 2018
Priority date	Aug 10, 2017
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

A display device includes: a display panel; a plurality of vibro-acoustic elements coupled to the display panel and spaced apart from each other on a lower surface of the display panel; and a bracket disposed below the display panel and including a bottom plate, where a plurality of receiving holes is defined through the bottom plate. The plurality of vibro-acoustic elements is disposed in the plurality of receiving holes, respectively, a vibration space is defined by a portion of the bottom plate defining a receiving hole of the receiving holes, which is recessed from an upper surface toward a lower surface of the bottom plate, and audio frequencies in different frequency bands, respectively, is produced from regions in which the plurality of vibro-acoustic elements are disposed.

First claim

What is claimed is:

1. A display device comprising:
a display panel; and
a plurality of vibro-acoustic elements coupled to the display panel and spaced apart from each other on the display panel,
wherein
the plurality of vibro-acoustic elements produces audio frequencies in different frequency bands, respectively,
portions of the display panel are recessed in a thickness direction, and
the plurality of vibro-acoustic elements is disposed in the portions of the display panel recessed in the thickness direction, respectively.

2. The display device of claim 1 , wherein the plurality of vibro-acoustic elements includes:
a first vibro-acoustic element which produces an audio frequency of a high frequency band;
a second vibro-acoustic element which produces an audio frequency of a middle frequency band; and
a third vibro-acoustic element which produces an audio frequency of a low frequency band.

3. The display device of claim 1 , wherein the plurality of vibro-acoustic elements have different sizes from each other to produces the audio frequencies in the different frequency bands, respectively.

4. The display device of claim 1 , wherein recessed depths of the portions of the display panel recessed in the thickness direction are different from each other.

5. The display device of claim 1 , further comprising:
a vibration reinforcing member disposed between the display panel,
wherein a vibro-acoustic element of the plurality of vibro-acoustic elements produces an audio frequency of a low frequency band, and
the vibration reinforcing member is coupled to the display panel and the vibro-acoustic element which produces the audio frequency of the low frequency band.

6. The display device of claim 1 , wherein
a vibro-acoustic element of the plurality of vibro-acoustic elements produces an audio frequency of a high frequency band, and
the vibro-acoustic element which produces the audio frequency of the high frequency band comprises:
a coil disposed on the display panel; and
a piezoelectric element disposed on the coil.

7. The display device of claim 1 , wherein the display panel is a diaphragm, such that at least a part of the display panel outputs sound in response to a vibration of the plurality of vibro-acoustic elements.

8. A bracket of a display device, the bracket comprising:
a bottom plate,
wherein
a plurality of receiving holes is defined through two opposing major surface planes defining the bottom plate, and spaced apart from each other,
a portion of the bottom plate defining a receiving hole of the plurality of receiving holes is recessed in a thickness direction of the bottom plate, and
a vibration space is defined by the portion of the bottom plate recessed in the thickness direction, and
wherein the plurality of receiving holes penetrate the bottom plate.

9. The bracket of claim 8 , wherein the plurality of receiving holes has different through areas from each other.

10. The bracket of claim 8 , wherein
another portion of the bottom plate defining another receiving hole of the plurality of receiving holes is recessed in the thickness direction of the bottom plate,
another vibration space is defined by the another portion of the bottom plate recessed in the thickness direction, and
a volume of the vibration space is different form a volume of the another vibration space.

11. The bracket of claim 8 , wherein the plurality of receiving holes comprises:
a vibro-acoustic element receiving hole; and a battery receiving hole,
wherein the portion of the bottom plate defining the vibro-acoustic element receiving hole is recessed in the thickness direction of the bottom plate, and
wherein another portion of the bottom plate defining the battery receiving hole is not recessed.

12. A display device comprising:
a display panel;
a plurality of vibro-acoustic elements coupled to the display panel and spaced apart from each other on a lower surface of the display panel; and
a bracket disposed below the display panel and including a bottom plate,
wherein
a plurality of receiving holes is defined through two opposing major surface planes defining the bottom plate
the plurality of vibro-acoustic elements is disposed in the plurality of receiving holes, respectively,
a portion of the bottom plate defining a receiving hole of the plurality of receiving holes is recessed from an upper surface toward a lower surface of the bottom plate,
a vibration space is defined by the portion of the bottom plate recessed from the upper surface toward the lower surface of the bottom plate, and
audio frequencies in different frequency bands, respectively, are produced from regions in which the plurality of vibro-acoustic elements is disposed,
wherein the plurality of receiving holes penetrates the bottom plate.

13. The display device of claim 12 , wherein the plurality of vibro-acoustic elements has different sizes from each other to produce the audio frequencies in the different frequency bands, respectively.

14. The display device of claim 12 , wherein
another portion of the bottom plate defining another receiving hole of the plurality of receiving holes is recessed from the upper surface toward the lower surface of the bottom plate,
another vibration space is defined by the another portion of the bottom plate recessed from the upper surface toward the lower surface of the bottom plate, and
a volume of the vibration space is different form a volume of the another vibration space to produce the audio frequencies in the different frequency bands, respectively.

15. The display device of claim 12 , wherein the plurality of vibro-acoustic elements and the bracket are not in contact with each other.

16. The display device of claim 12 , wherein
a battery receiving hole is defined through the bottom plate, and
the battery receiving hole is spaced apart from the plurality of receiving holes.

17. The display device of claim 16 , wherein another portion of the bottom plate defining the battery receiving hole is not recessed.

18. The display device of claim 12 , wherein a vibro-acoustic element of the plurality of vibro-acoustic elements has a shape including at least a part of a frame shape in a plan view with an opening defined therein.

19. The display device of claim 18 , wherein the vibro-acoustic element has a rectangular frame shape in the plan view.

Assignees

• Samsung Display Co Ltd

Inventors

• Ahn Yi Joon
• Kim Sung Chul
• Noh Jung Hun
• Song Keun Kyu
• Chu Hye Yong

Classifications

• G02F2001/133314

  Physics · mapped topic

• H04R1/025

  Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture · CPC title

• H04R9/06

  Loudspeakers · CPC title

• H04R2440/07

  Loudspeakers using bending wave resonance and pistonic motion to generate sound · CPC title

• G02F1/133308

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