Panel vibration type sound generating display device

Patent metadata

Field	Value
Publication number	US-2020100024-A1
Application number	US-201916696847-A
Country	US
Kind code	A1
Filing date	Nov 26, 2019
Priority date	Mar 28, 2016
Publication date	Mar 26, 2020
Grant date	—

Abstract

A panel vibration type sound generating display device is disclosed. The display device includes a display panel for displaying an image; a sound generating actuator connected to the display panel and configured to vibrate the display panel to generate sound; a support structure spaced apart from the display panel with an air gap between the support structure and the display panel; and a baffle part disposed between the support structure and the display panel to surround the air gap.

First claim

What is claimed is:

1 . A panel vibration type sound generating display device, comprising:
a display panel configured to display an image; a sound generating actuator connected to the display panel and configured to vibrate the display panel to generate sound; a support structure spaced apart from the display panel with an air gap between the support structure and the display panel; and a baffle part disposed between the support structure and the display panel to surround the air gap.

2 . The display device of claim 1 , wherein the support structure is configured to cover and support the display panel.

3 . The display device of claim 1 , wherein the baffle part comprises at least one of an adhesive member and a sealing part disposed outside of the adhesive member.

4 . The display device of claim 1 , wherein the support structure includes a step portion protruding upward from a base surface of the support structure at one side of the support structure.

5 . The display device of claim 4 , wherein the support structure includes a side surface supporting portion vertically extending from an outside portion of the step portion.

6 . The display device of claim 1 , wherein the sound generating actuator comprises:
a plate on the support structure; a magnet disposed on the plate; a center pole disposed at a center of the plate; a bobbin surrounding the center pole and connected to the display panel; and a coil wound around the bobbin.

7 . The display device of claim 1 , further comprising a source printed circuit board (PCB) disposed on the display panel,
wherein the support structure comprises:
a recessed part located in an interior surface of the support structure, the recessed part being located opposite the source PCB disposed on the display panel; and
a first buffer member disposed in the recessed part between the support structure and the source PCB.

8 . The display device of claim 1 , further comprising a source printed circuit board (PCB) on the display panel and configured to drive the display panel,
wherein the support structure comprises a second buffer member in contact with both an interior surface of the support structure and the display panel, the second buffer member separating a space between the support structure and the display panel into a first area and a second area, the first area including the source PCB and the second area including the sound generating actuator.

9 . The display device of claim 1 , further comprising another sound generating actuator connected to the display panel and configured to vibrate the display panel to generate sound.

10 . The display device of claim 11 , wherein the two sound generating actuators are symmetrically arranged.

11 . The display device of claim 12 , wherein the support structure further comprises a reinforcement member extending between or through the two sound generating actuators.

12 . The display device of claim 1 , wherein the support structure is a cover bottom of the display device.

13 . An apparatus, comprising:
a display panel configured to display an image; a support structure spaced apart from the display panel with an air gap between the support structure and the display panel; and at least two sound generating actuators respectively disposed at different areas of the display panel and respectively configured to vibrate the different areas of the display panel to generate sound.

14 . The apparatus of claim 13 , wherein the at least two sound generating actuators are configured to generate stereo sound.

15 . The apparatus of claim 13 , wherein the at least two sound generating actuators are symmetrically arranged.

16 . The apparatus of claim 13 , wherein the at least two sound generating actuators are capable of generating different vibrations from one another to generate different sounds in the different areas of the display panel.

17 . The apparatus of claim 13 , further comprising a baffle part at a rear side of the display panel separating one of the different areas from another of the different areas.

18 . The apparatus of claim 13 , wherein the sound generating actuators are configured to vibrate the display panel to generate sound projecting in a direction coinciding with an image output direction of the display panel to localize the output sound.

19 . The display device of claim 13 , wherein the support structure includes a step portion protruding upward from a base surface of the support structure at one side of the support structure.

20 . The display device of claim 19 , wherein the support structure includes a side surface supporting portion vertically extending from an outside portion of the step portion.

Assignees

• Lg Display Co Ltd

Inventors

• CHOI YeongRak
• Oh Changho
• Park Kwanho
• Lee Sungtae

Classifications

• G02F1/1333 Primary

  Constructional arrangements; {Manufacturing methods}(G02F1/135, G02F1/136 take precedence) · CPC title

• H04R2499/11

  Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's · CPC title

• H04R5/02

  Spatial or constructional arrangements of loudspeakers · CPC title

• G02F1/133308

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

• G09G3/3225

  using an active matrix · CPC title