A transparent ultrasonic emitter includes a first transparent conductive layer; a second transparent conductive layer; and a plurality of transparent spacers disposed between the first and second transparent layers conductive of the ultrasonic audio speaker, the transparent spacers having a thickness and being arranged to define an open area between the first and second transparent layers.

An audio-visual system is shown and describe. The audio-visual system comprises a soundbar and a television monitor assembly. The television monitor assembly comprises a television monitor, a first support and a second support. The first support comprises a first base member and a first vertical member, and the second support comprises a second base member and a second vertical member. The television monitor assembly has one or more free-standing configurations in which the lengths of the first and second base members are substantially perpendicular to the front and rear surfaces of the television monitor and one or more wall-mounted configurations in which the lengths of the first and second base members are substantially parallel to the front rear surfaces of the television monitor. An audio visual system may be provided by attaching a soundbar to the first and second base members in the free-standing configurations.

A mountable video player apparatus for placing video content in photo albums, scrap books, year books, and art includes a housing having a housing front side, a housing back side, a housing top side, a housing bottom side, a housing left side, and a housing right side defining a housing inside. An adhesive layer is coupled to the housing back side to secure the apparatus to a page. A CPU is coupled within the housing inside. A memory chip and a battery are coupled within the housing inside and are in operational communication with the CPU. A display screen is coupled to the housing front side and is in operational communication with the CPU. A plurality of control buttons is coupled within the housing front side and is in operational communication with the CPU.

A display apparatus includes a display panel including a plurality of pixels and configured to display an image; a housing module including a roller therein such that the display panel is configured to be wound on the roller to be housed in the housing module or unwound from the roller to extend from the housing module; a rolling module including a structure connected to the display panel and configured to wind or unwind the display panel according to a folding or unfolding of the structure; and a vibration device on the structure, the vibration device configured to vibrate the display panel in an unwound state.

A display device comprises a display unit having a display surface, a light source that irradiates light onto the display unit, a rear housing attached to an opposite side of the display unit from the display surface, a rear cover that covers a part of the rear housing, and a speaker attached to the rear housing. The speaker includes a speaker main body, a first cover member to which the speaker main body is attached and having an outer surface facing the rear housing, a second cover member disposed so as to face the first cover member across the speaker main body, a retaining member disposed between the speaker main body and the first cover member and fixed to the rear housing by a fastening member, and a magnet attached to the outer surface of the first cover member and fixing the speaker main body to the rear housing.

A speaker structure comprises a main speaker, an auxiliary speaker, a first driving mechanism, and a second driving mechanism. The auxiliary speaker is connected to the main speaker and displaceable relative to the main speaker. The first drive mechanism is configured to drive the main speaker to reciprocate in a first direction, and the second driving mechanism is configured to drive the auxiliary speaker to reciprocate in a second direction relative to the main speaker. The first driving mechanism is arranged in the main speaker, and the second driving mechanism is arranged in the main speaker. An output end of the second driving mechanism extends out of the main speaker and connected to the auxiliary speaker.

An apparatus includes a vibration member and a first cover disposed at a rear surface of the vibration member and including a first hole. The apparatus also includes a first vibration apparatus disposed at a rear surface of the first cover and configured to cover the first hole, the first vibration apparatus being configured to vibrate the vibration member. The apparatus additionally includes a first enclosure member disposed at the rear surface of the first cover and configured to cover the first hole and the first vibration apparatus.

User equipment (UE) includes a housing, an audio output module, and a drive module connected to the audio output module. The drive module is configured to drive the audio output module to move along a straight line between a first location and a second location. The first location is inside the housing. The second location is outside the housing. When the audio output module is in an audio output state, the drive module is configured to drive the audio output module to move along the straight line to the second location. When the audio output module exits the audio output state, the drive module is configured to drive the audio output module to move along the straight line to the first location.

A display device comprises: a motor; a display; a plurality of speakers provided in a plurality of regions of the display; and at least one processor. The at least one processor being configured to output a plurality of audio signals corresponding to a plurality of audio channels to the plurality of speakers, control the motor to rotate the display, based on an input of a user command for rotating the display, and control the plurality of speakers to output the plurality of audio signals in response to a change in positions of the plurality of speakers based on a rotation of the display.

A display apparatus is provided. The display apparatus includes a display; a main body on which the display is mounted; a cover; a mounting member configured to separably mount the main body to the mounting member; and a guide member disposed at a back surface of the main body, the guide member including a plate member and side-surface members extending from opposite side surfaces of the plate member, wherein each of the side-surface members has an inclined shape.