The screen is a speaker
ACOUSTIC SURFACE SONY
Edge-to-edge screens are the hot look for high-end TVs, so room for a speaker grate is out of the question. Sony solved this design problem in its Bravia OLED A1E 4K HDR TV by embedding four actuators behind the display to create visually imperceptible vibrations—in other words, sound. The distance between actuators can create localized audio, so sound can move across the display to match the action.