An apparatus may include a vibration member, a supporting member at a rear surface of the vibration member, and a vibration apparatus. The vibration apparatus may be disposed at the supporting member and may include a curved shape.

An apparatus may include a vibration member, a rear cover at a rear surface of the vibration member, a first vibration device at a first rear region of the rear cover, and a second vibration device at a second rear region of the rear cover. The first vibration device may overlap at least one of a horizontal region and a middle region of the rear cover. The second vibration device may overlap a periphery region or a middle region of the rear cover.

A panel-type speaker includes a panel and an actuator and is configured to vibrate the panel by the actuator so as to output sound waves from the panel, the actuator includes: a vibrating plate; and a piezoelectric element arranged on at least one surface of the vibrating plate, the piezoelectric element has, at a central portion of the piezoelectric element in a plan view, an opening from which the vibrating plate is exposed, and at a portion of the vibrating plate exposed from the opening, the vibrating plate is coupled to the panel.

A display apparatus includes: a display panel configured to display an image, one or more sound generation devices configured to vibrate the display panel to generate sound, a supporting member configured to support the display panel, a partition between the display panel and the supporting member, the partition including: a first side in a horizontal direction, and a second side in a vertical direction, and one or more first pad parts on the first side.

A display device including a circuit board having a sound generator includes: a base layer; conductive lines disposed on the base layer; and a sound generator disposed on the conductive lines, the sound generator contracting and expanding according to the polarity of driving voltages applied thereto.

The present disclosure is directed to a sound amplification device. The sound amplification device comprises a vibrating body, the vibrating body including at least one first vibration surface and at least one contact region for contacting with a vibration source. The vibration source detachably contacts with a contact region, an area of a first vibration surface is larger than an area of the contact region, the vibration source is configured to generate vibration, and the vibration is transmitted to the first vibration surface through the contact region, and further transmitted outwards through the first vibration surface.

An active sounding device integrated into a flat panel display includes a glass diaphragm having a first surface on which a light emitting array and a touch panel are formed, a plurality of planar voice coils arranged on the second surface of the glass diaphragm opposite to the first surface, and a magnet assembly arranged below the plurality of planar voice coils, wherein the plurality of planar voice coils are electromagnetically coupled to the magnet assembly for converting received electrical signals into vibration signals of the glass diaphragm and making the flat panel display emitting sound.

A panel speaker includes: a panel; a vibration actuator that vibrates the panel, the vibration actuator having first and second oppositely-facing surfaces, the first surface facing the panel; a bracket that is located between the first surface of the vibration actuator and the panel; a spacer that is located adjacent to the second surface of the vibration actuator, the spacer occupying a first area that is encompassed by a second area occupied by the bracket when the panel speaker is viewed in a direction that is perpendicular to a plane of the second surface; and a screw that passes through the spacer, the vibration actuator, and the bracket to fasten the spacer, the vibration actuator, and the bracket to the panel. The vibration actuator, disposed between the bracket and the spacer, is fastened by the screw to the panel.

Provided is a signal processing device including a control unit configured to control each of a plurality of actuators configured to drive a display unit on the basis of an acoustic signal, in which the plurality of the actuators is provided for respective regions of the display unit, and the control unit executes low band component reduction processing of reducing a low band component of an acoustic signal of the region for driving the actuator on the basis of luminance of an image to be displayed in the region of the display unit.

An electronic device including a display panel, a protection layer, and a sound broadcasting element is provided. The display panel is disposed on an inner surface of the protection layer. The sound broadcasting element is disposed on the inner surface of the protection layer and includes a piezoelectric component and a connection component. The connection component is located on a side of the display panel, the connection component contacts the protection layer and is connected between the piezoelectric component and the protection layer. A back surface of the display panel is located between the piezoelectric component and the protection layer, wherein the back surface of the display panel is a surface away from the protection layer.