Display apparatus

1. A display apparatus, comprising:

a display structure, a sound emitting substrate, and a plurality of electromagnetic exciters;

wherein the display structure is configured to receive and display optical signals;

the sound emitting substrate is attached to the display structure and is divided into a plurality of regions by a plurality of isolation zones, at least some of the plurality of regions are attached to at least one of the plurality of electromagnetic exciters, the sound emitting substrate comprises an intermediate layer, and a first isolation zone of the plurality of isolation zones comprise a plurality of grooves formed in two side surfaces of the intermediate layer; and

the plurality of electromagnetic exciters are configured to generate bending waves at an area where the plurality of electromagnetic exciters are attached to the sound emitting substrate, and the bending waves are propagated in regions where the plurality of electromagnetic exciters are attached to the sound emitting substrate to enable the regions and a portion of the display structure attached with the regions to vibrate and emit sound.

2. The display apparatus according to claim 1 , wherein

the first isolation zone comprises a first groove in each of the two side surfaces of the intermediate layer, and the plurality of grooves in the two side surfaces of the intermediate layer are staggered and parallel, and

a depth direction of the first groove is perpendicular to a surface of the sound emitting substrate, and an extension direction of the first groove is the same as an extension direction of the first isolation zone.

3. The display apparatus according to claim 2 , wherein

a depth of the first groove is greater than or equal to half of a thickness of the sound emitting substrate.

4. The display apparatus according to claim 3 , wherein

the sound emitting substrate comprises a first skin, a first coating layer, the intermediate layer, a second coating layer, and a second skin; the first skin and the first coating layer are attached to one side of the intermediate layer in sequence, and the second skin and the second coating layer are attached to the other side of the intermediate layer in sequence;

the first skin and the second skin are configured to wrap the intermediate layer, the first coating layer is configured to connect the first skin and the intermediate layer, and the second coating layer is configured to connect the second skin and the intermediate layer.

5. The display apparatus according to claim 3 , wherein the display structure is attached to one side surface of the sound emitting substrate.

6. The display apparatus according to claim 4 , wherein

the intermediate layer is made from a foamed plastic core material.

7. The display apparatus according to claim 5 , wherein

the intermediate layer is a foamed plastic core material.

8. The display apparatus according to claim 6 , wherein

the foamed plastic core material comprises polymethacrylimide (PMI), or hard polystyrene.

9. The display apparatus according to claim 4 , wherein the first skin is made from fiberglass, carbon fiber, hybrid glass-carbon fiber, plastic, or lightweight aluminum.

10. The display apparatus according to claim 4 , wherein the second skin is made from fiberglass, carbon fiber, hybrid glass-carbon fiber, plastic, or lightweight aluminum.

11. The display apparatus according to claim 1 , wherein the display structure comprises OLED panel.

12. The display apparatus according to claim 11 , wherein an area of the sound emitting substrate is less than an area of the display structure.