Display apparatus

Patent metadata

Field	Value
Publication number	US-11917364-B2
Application number	US-202117242641-A
Country	US
Kind code	B2
Filing date	Apr 28, 2021
Priority date	Apr 29, 2020
Publication date	Feb 27, 2024
Grant date	Feb 27, 2024

Abstract

A display apparatus includes a display module including a display panel configured to display an image, a structure at a rear surface of the display module, and a vibration generator at the structure. The structure may include a nonlinear portion covering a periphery of the rear surface of the display module and a sound emission port spaced apart from the rear surface of the display module.

First claim

What is claimed is:

1. A display apparatus, comprising:
a display module including a display panel configured to display an image at a front surface;
a structure at a rear surface of the display module; and
a vibration generator at the structure,
wherein:
the structure includes a nonlinear portion to cover a periphery of the rear surface of the display module along a first direction and a sound emission port spaced apart from the rear surface of the display module;
the vibration generator has a surface facing toward the front surface;
the rear surface of the display module faces away from the front surface and faces toward the surface of the vibration generator;
the surface of the vibration generator has a first end and a second end opposite to the first end;
the vibration generator has an area of vibration source for generating vibration;
the surface of the vibration generator between the first end and the second end is flat and overlaps the area of vibration source;
compared to the first end, the second end is closer to one side of the display module;
a first distance is between the first end of the surface of the vibration generator and the rear surface of the display module;
a second distance is between the second end of the surface of the vibration generator and the rear surface of the display module; and
the second distance is greater than the first distance;
wherein the vibration generator comprises:
a module frame in the structure;
a bobbin on the module frame; and
a protection member at an upper portion of the bobbin; and

wherein the surface of the vibration generator is a surface of the protection member.

2. The display apparatus of claim 1 , wherein the vibration generator is in nonparallel with the rear surface of the display module.

3. The display apparatus of claim 1 ,
wherein the structure comprises:
a supporting portion configured to support the vibration generator; and
a sound guide portion extending from the supporting portion to the one side of the display module and including the nonlinear portion, and
wherein the sound emission port is between one side of the nonlinear portion and the rear surface of the display module.

4. The display apparatus of claim 3 , wherein the supporting portion comprises an opening portion overlapping the vibration generator.

5. The display apparatus of claim 1 , wherein the nonlinear portion includes a cross-sectional structure having a curved shape.

6. The display apparatus of claim 1 , wherein the structure provides a first gap space between the rear surface of the display module and the vibration generator, and a second gap space between the nonlinear portion and the rear surface of the display module, and
wherein the first gap space and the second gap space are connected to the sound emission port.

7. The display apparatus of claim 6 , wherein at least a portion of a sound output from the vibration generator is reflected in a lateral direction of the display module by the nonlinear portion, and is output in a forward direction of the display module through the sound emission port.

8. A display apparatus, comprising:
a display module including a display panel configured to display an image at a front surface;
a first vibration generating module at a first region of a rear surface of the display module; and
a second vibration generating module at a second region of the rear surface of the display module,
wherein each of the first and second vibration generating modules comprises:
a vibration generator configured to output a sound to the rear surface of the display module; and
a structure configured to support the vibration generator;
wherein:
the structure comprises a nonlinear portion guiding a sound output from the vibration generator to one side of the display module and a sound emission port spaced apart from the rear surface of the display module;
the vibration generator has a surface facing toward the front surface;
the rear surface of the display module faces away from the front surface and faces toward the surface of the vibration generator;
the surface of the vibration generator has a first end and a second end opposite to the first end;
the vibration generator has an area of vibration source for generating vibration;
the surface of the vibration generator between the first end and the second end is flat and overlaps the area of vibration source;
compared to the first end, the second end is closer to the one side of the display module;
a first distance is between the first end of the surface of the vibration generator and the rear surface of the display module;
a second distance is between the second end of the surface of the vibration generator and the rear surface of the display module; and
the second distance is greater than the first distance;
wherein the vibration generator comprises:
a module frame in the structure;
a bobbin on the module frame; and
a protection member at an upper portion of the bobbin; and

wherein the surface of the vibration generator is a surface of the protection member.

9. The display apparatus of claim 8 , wherein:
the structure is at the rear surface of the display module, and
the vibration generator is in nonparallel with the rear surface of the display module.

10. The display apparatus of claim 8 ,
wherein the structure comprises:
a supporting portion configured to support the vibration generator; and
a sound guide portion extending from the supporting portion to the one side of the display module and including the nonlinear portion, and
wherein the sound emission port is between one side of the nonlinear portion and the rear surface of the display module.

11. The display apparatus of claim 1 , wherein:
the structure further comprises a sound emission portion protruding from one side of the nonlinear portion, and
the sound emission port is between the sound emission portion and a side surface of the display module.

12. The display apparatus of claim 11 , wherein the sound emission portion comprises a protrusion portion.

13. The display apparatus of claim 1 , wherein a distance between the rear surface of the display module and the vibration generator increases progressively toward the one side of the display module adjacent to the vibration generator along the first direction.

14. The display apparatus of claim 1 , wherein a distance between the rear surface of the display module and the nonlinear portion of the structure decreases progressively toward the one side of the display module adjacent to the structure along the first direction.

15. The display apparatus of claim 1 , wherein the nonlinear portion of the structure comprises a plurality of curved portions having different curvature radiuses.

16. The display apparatus of claim 1 , wherein:
the nonlinear portion of the structure comprises a plurality of curved portions, and
a curvature radius of each of the plurality of curved portions decreases progressively toward the one side of the display module adjacent to the structure.

17. The display apparatus of claim 3 , wherein a length of the sound guide portion is longer than half of a length of the vibration generator and shorter than a total length of the vibration generator, with respect to the first direction.

18. The display apparatus of claim 17 , wherein:
the sound guide portion further comprises a linear portion between the supporting portion and the nonlinear portion, and
a length of the nonlinear portion and a length of the linear portion are the same or diffe

Assignees

• Lg Display Co Ltd

Inventors

• Rhim Jusang
• Lee Minjin
• Kim Daeyong
• Choi Eunhee

Classifications

• H04R1/345 Primary

  for loudspeakers · CPC title

• G06F3/165

  Management of the audio stream, e.g. setting of volume, audio stream path · CPC title

• H04R1/028

  associated with devices performing functions other than acoustics, e.g. electric candles · CPC title

• H04R1/403

  loud-speakers · CPC title

• H04R3/12

  for distributing signals to two or more loudspeakers {(specially adapted for hearing aids H04R25/407)} · CPC title