Display apparatus

Patent metadata

Field	Value
Publication number	US-10986443-B2
Application number	US-202016905370-A
Country	US
Kind code	B2
Filing date	Jun 18, 2020
Priority date	Jun 24, 2019
Publication date	Apr 20, 2021
Grant date	Apr 20, 2021

Abstract

A display apparatus includes a rear chassis configured to support a liquid crystal display panel and a backlight assembly; a vibration region formed as a part of the rear chassis adjacent to an edge of the rear chassis, the vibration region being isolated from a remaining part of the rear chassis by a vibration blocking part so that vibration is not transmitted to the remaining part of the rear chassis; a vibrator disposed in the vibration region; a rear housing configured to surround the rear chassis and including a discharge port communicating with the vibration region of the rear chassis to discharge sound generated in the vibration region to an outside; and a waveguide disposed on the rear chassis and configured to guide sound generated in the vibration region to the discharge port of the rear housing.

First claim

What is claimed is:

1. A display apparatus comprising
a rear chassis configured to support a liquid crystal display panel and a backlight assembly;
a vibration region formed as a part of the rear chassis adjacent to an edge of the rear chassis, the vibration region being isolated from a remaining part of the rear chassis by a vibration blocking part so that vibration is not transmitted to the remaining part of the rear chassis;
a vibrator disposed in the vibration region;
a rear housing configured to surround the rear chassis and including a discharge port communicating with the vibration region of the rear chassis to discharge sound generated in the vibration region to an outside; and
a waveguide disposed on the rear chassis and configured to guide the sound generated in the vibration region to the discharge port of the rear housing,
wherein the vibration blocking part comprises:
a slit which is formed in the rear chassis and surrounds the vibration region, to isolate the vibration region from the remaining part of the rear chassis, and
a plurality of bridges provided in the slit and connecting the vibration region to the remaining part of the rear chassis.

2. The display apparatus as claimed in claim 1 , wherein
the vibrator comprises a plurality of vibrators disposed in the vibration region.

3. The display apparatus as claimed in claim 1 , wherein
the rear chassis comprises a reinforcing bead that protrudes from one surface of the rear chassis and reinforces a strength of the rear chassis, and
wherein the vibrator is disposed on a surface where the reinforcing bead is protruded.

4. The display apparatus as claimed in claim 1 , wherein
the waveguide is provided on one surface of the rear chassis facing the rear housing.

5. The display apparatus as claimed in claim 4 , wherein
the waveguide is formed of a sound absorbing member provided to close a space between the rear chassis and the rear housing along a periphery of the vibration region.

6. The display apparatus as claimed in claim 1 , wherein
the waveguide is provided on one surface of the rear chassis facing the backlight assembly.

7. The display apparatus as claimed in claim 6 , wherein
the waveguide is formed of a sound absorbing member provided to close a space between the rear chassis and the backlight assembly along a periphery of the vibration region.

8. The display apparatus as claimed in claim 1 , wherein
the waveguide is formed as a guide duct provided on one surface of the rear chassis to surround a space facing the vibration region.

9. The display apparatus as claimed in claim 1 , wherein
the rear chassis comprises a step portion protruding toward the backlight assembly, and
the vibration region is formed on a bottom surface of the step portion.

10. The display apparatus as claimed in claim 1 , wherein
the rear chassis comprises a step portion protruding toward the rear housing, and
the vibration region is formed on a bottom surface of the step portion.

11. The display apparatus as claimed in claim 1 , wherein
the vibration region comprises two vibration regions formed in the rear chassis so that the two vibration regions are line-symmetric with respect to a longitudinal center line of the rear chassis, and
wherein the vibrator comprises two vibrators provided in the two vibration regions.

12. The display apparatus as claimed in claim 11 , wherein
the rear housing comprises two discharge ports corresponding to the two vibration regions, and
the two discharge ports are formed in a bottom surface of the rear housing.

13. The display apparatus as claimed in claim 11 , wherein
the rear housing comprises two discharge ports corresponding to the two vibration regions, and
the two discharge ports are formed in both side surfaces of the rear housing.

14. The display apparatus as claimed in claim 1 , wherein
the vibration region comprises a plurality of vibration regions having different reproducing sound ranges.

15. A display apparatus comprising:
a rear chassis configured to support a liquid crystal display panel and a backlight assembly;
a vibration plate provided to face a part of the rear chassis adjacent to an edge of the rear chassis and spaced apart from the part by a predetermined distance;
a vibrator disposed in the vibration plate;
a rear housing configured to surround the rear chassis and including a discharge port communicating with a space in contact with the vibration plate of the rear chassis to discharge sound generated by the vibration plate to an outside; and
a waveguide disposed between the backlight assembly and the rear housing and configured to guide the sound generated by the vibration plate to the discharge port of the rear housing,
wherein the waveguide extends adjacent the vibration plate, along a periphery of the vibration plate.

16. The display apparatus as claimed in claim 15 , wherein
the vibration plate is disposed between the rear chassis and the rear housing.

17. The display apparatus as claimed in claim 16 , wherein
the waveguide is formed of a support member provided to close a space between the rear chassis and the vibration plate along the periphery of the vibration plate.

18. The display apparatus as claimed in claim 15 , wherein
the vibration plate is disposed between the rear chassis and the backlight assembly.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Sungjoo
• Park Hanjin
• Kim Jongbae

Classifications

• H04R2499/10

  General applications · CPC title

• H04R1/345 Primary

  for loudspeakers · CPC title

• G02F1/133317

  Intermediate frames, e.g. between backlight housing and front frame · CPC title

• H04R2499/15

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

• H04R7/045 Primary

  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