Granted Patent B2

US 12,395,787 · App. 18/217,983 · Granted Aug 19, 2025

Inventors: YeongRak Choi (Paju-si, KR); ChangHo Oh (Seoul, KR); KwanHo Park (Incheon, KR); Sungtae Lee (Incheon, KR)

Assignee: LG DISPLAY CO., LTD.

H04R1/323G02F1/1333G06F1/1605H04R1/025H04R1/028H04R7/045H04R9/02G02F1/133308G09G3/3225G09G3/3266G09G3/3275G09G2310/08H04R5/02H04R7/04H04R9/043H04R9/063H04R2400/03H04R2499/11H04R2499/15

Abstract

Claims (30)

1. An apparatus, comprising:

a vibrating plate;

at least one sound generating actuator disposed at a rear of the vibrating plate and configured to vibrate the vibrating plate to generate sound;

a support structure on a rear surface of the vibrating plate;

a printed circuit at the rear of the vibrating plate; and

an area division member at a rear portion of the vibrating plate, the area division member dividing an area at the rear portion of the vibrating plate into a first area including the printed circuit and a second area including the at least one sound generating actuator.

2. The apparatus of claim 1 , further comprising a baffle part disposed between the support structure and the vibrating plate to form an air gap between the support structure and the vibrating plate.

3. The apparatus of claim 2 , wherein the baffle part is disposed at a periphery of the second area between the support structure and the vibrating plate to surround the air gap in the second area.

4. The apparatus of claim 2 , wherein the vibrating plate is configured to generate sound waves in the air gap when vibrated by the at least two sound generating actuators, and

wherein the baffle part surrounds the air gap to reduce leakage of the sound waves out of the air gap.

5. The apparatus of claim 2 , wherein the baffle part comprises at least one of an adhesive member and a sealing part disposed outside of the adhesive member.

6. The apparatus of claim 1 ,

wherein the at least one sound generating actuator includes at least two sound generating actuators, and

wherein the apparatus further comprises a reinforcement member extending between a sound generating actuator and another sound generating actuator among the at least two sound generating actuators.

7. The apparatus of claim 6 , wherein the reinforcement member is disposed apart from the sound generating actuator and the other sound generating actuator.

8. The apparatus of claim 1 , wherein the support structure comprises:

a cover bottom covering the rear portion of the vibrating plate; and

a middle cabinet supporting a periphery of the vibrating plate.

9. The apparatus of claim 1 , wherein the support structure comprises:

a recessed part disposed in an inner surface of the support structure, the recessed part being disposed opposite the printed circuit; and

a first buffer member in the recessed part between the support structure and the printed circuit.

10. The apparatus of claim 1 ,

wherein the at least one sound generating actuator includes at least two sound generating actuators respectively disposed at different areas of the vibrating plate and respectively configured to vibrate the different areas of the vibrating plate to generate sound, and

wherein each of the at least two sound generating actuators is configured to vibrate the vibrating plate to generate sound projecting in a direction coinciding with an image output direction of the vibrating plate to localize the output sound.

11. The apparatus of claim 10 , further comprising a baffle part at a rear portion of the vibrating plate separating one of the different areas from another of the different areas.

12. The apparatus of claim 10 , wherein the at least two sound generating actuators are configured to generate a stereo sound.

13. The apparatus of claim 10 , wherein the at least two sound generating actuators are symmetrically arranged.

14. The apparatus of claim 10 , wherein the at least two sound generating actuators are configured to generate different vibrations from one another to generate different sounds in the different areas of the vibrating plate.

15. The apparatus of claim 1 , wherein the thickness of the air gap is from about 1.0 mm to 3.0 mm.

16. The apparatus of claim 1 , further comprising a sound compensation member.

Priority Claims (1)

Continuity (5)

References Cited (341)