Granted Patent B2

US 12,568,333 · App. 18/583,784 · Granted Mar 3, 2026

Inventors: YeongRak Choi (Gyeonggi-do, KR); KwanHo Park (Incheon, KR); Sungtae Lee (Incheon, KR)

Assignee: LG DISPLAY CO., LTD.

H04R5/02H04N5/642H04R1/025H04R1/028H04R1/26H04R1/288H04R3/14H04R7/045H04R9/025H04R9/06H04R9/066H04R11/02H04R5/023H04R2307/023H04R2307/025H04R2400/03H04R2440/05H04R2499/15

Abstract

Claims (54)

1 . A sound generating apparatus, comprising:

a vibration plate;

sound generating actuators disposed in areas of the vibrating plate configured to vibrate the vibration plate to generate sound;

a support structure at a rear portion of the vibration plate;

a partition between the sound generating actuators;

a baffle between the vibration plate and the support structure to form an air gap space between the vibration plate and the support structure; and

at least one speaker,

wherein the partition extends outside the baffle, and

wherein the partition is in contact with the vibration plate and the support structure.

2 . The sound generating apparatus of claim 1 ,

wherein the plurality of sound generating actuators include a first sound generating actuator in a first area of the vibration plate, and a second sound generating actuator in a second area of the vibration plate,

wherein the partition is disposed between the first sound generating actuator and the second sound generating actuator,

wherein the baffle and the partition configured to form a first air gap space and a second air gap space, and

wherein the partition extends to the lower portion of the first air gap space and the second air gap space.

3 . The sound generating apparatus of claim 2 ,

wherein the at least one speaker includes a first speaker disposed on a left side of an extended portion of the partition and a second speaker disposed on a right side of an extended portion of the partition.

4 . The sound generating apparatus of claim 2 , wherein the first sound generating actuator and the second sound generating actuator are spaced apart from the partition in the first area and the second area, respectively.

5 . The sound generating apparatus of claim 2 , wherein the first air gap space is formed around the first sound generating actuator and the second air gap space is formed around the second sound generating actuator.

6 . The sound generating apparatus of claim 2 , wherein the first sound generating actuator and the second sound generating actuator are arranged asymmetrically in the first air gap space and the second air gap space, respectively.

7 . The sound generating apparatus of claim 2 , wherein the first sound generating actuator and the second sound generating actuator are arranged horizontally and vertically symmetrically in the first air gap space and the second air gap space, respectively.

8 . The sound generating apparatus of claim 1 , wherein each of the sound generating actuators comprises:

a lower plate;

a magnet on the lower plate;

a center pole at a center of the lower plate;

a bobbin surrounding the center pole; and

a coil wound around the bobbin.

9 . The sound generating apparatus of claim 1 , wherein the partition has a multi-wall structure including first and second sound separation portions at first and second sides relative to a center of the vibration plate.

10 . The sound generating apparatus of claim 1 , wherein the support structure includes a support hole, and at least one of the sound generating actuators is in the support hole.

11 . The sound generating apparatus of claim 1 , wherein the at least one speaker is configured to generate sound in a different range from the sound generating actuators.

12 . The sound generating apparatus of claim 1 , wherein the at least one speaker is a low sound speaker.

13 . The sound generating apparatus of claim 1 , wherein sound of a mid-high sound range is generated by the sound generating actuators and sound of a low sound range is generated by the at least one speaker.

14 . The sound generating apparatus of claim 1 , wherein the vibrating plate is a part of a display panel configured to display an image at the areas.

15 . A sound generating apparatus, comprising:

a vibration plate;

sound generating actuators disposed in areas of the vibrating plate configured to vibrate the vibration plate to generate sound;

a support structure at a rear portion of the vibration plate;

a partition between the sound generating actuators;

a baffle between the vibration plate and the support structure to form an air gap space between the vibration plate and the support structure; and

at least one speaker,

wherein the partition extends outside the baffle,

wherein each of the sound generating actuators comprises a lower plate, a magnet on the lower plate, a center pole at a center of the lower plate, a bobbin surrounding the center pole, and a coil wound around the bobbin, and

wherein:

the lower plate includes an extension portion extending outwardly, and

the extension portion is fixed to a lower surface of the support structure.

16 . The sound generating apparatus of claim 15 , further comprising an adhesive member between the extension portion of the lower plate and one of the sound generating actuators.

17 . A sound generating apparatus, comprising:

a vibration plate;

sound generating actuators disposed in areas of the vibrating plate configured to vibrate the vibration plate to generate sound;

a support structure at a rear portion of the vibration plate;

a partition between the sound generating actuators;

a baffle between the vibration plate and the support structure to form an air gap space between the vibration plate and the support structure; and

at least one speaker,

wherein the partition extends outside the baffle, and

wherein the partition is attached to the upper surface of the support structure and contacts the lower surface of the vibration plate without adhesive therebetween.

Priority Claims (9)

Continuity (5)

References Cited (377)