Patent ID: 9436320
Filing Date: 2016-09-06
CPC Classification: G06F,H04R

Claim Text:
1. A display device unit comprising: a display device; a sound element disposed at a side surface or a rear surface of the display device; a vibration plate disposed between the display device and the sound element; and a back chassis disposed at a rear surface of the display device, and comprising a fixing protrusion which protrudes toward the rear surface of the display device, wherein the sound element comprises: a vibration material layer which generates a sound based on an electric field applied therein, and a pair of electrodes which generate the electric field in the vibration material layer, and wherein the fixing protrusion is formed integrally with the back chassis and of the same material as that of the back chassis, and wherein the sound element is disposed between the fixing protrusion and the vibration plate and the fixing protrusion overlaps a center of the sound element and contacts one of the electrodes of the sound element such that the fixing protrusion effectively prevents the sound element from being displaced by vibration.