A piezoelectric MEMS transducer formed in a body of semiconductor material, which has a central axis and a peripheral area and comprises a plurality of beams, transverse to the central axis and having a first end, coupled to the peripheral area of the body, and a second end, facing the central axis; a membrane, transverse to the central axis and arranged underneath the plurality of beams; and a pillar, parallel to the central axis and rigid with the second end of the beams and to the membrane. The MEMS transducer further comprises a plurality of piezoelectric sensing elements arranged on the plurality of beams.

A loudspeaker system composed of a flexible panel with an affixed array of force actuators, a signal processing system, and interface electronic circuits is described. The system described is capable of creating a pattern of standing bending waves at any location on the panel and the instantaneous amplitude, velocity, or acceleration of the standing waves can be controlled by an audio signal to create localized acoustic sources at the selected locations in the plane of the panel.

Disclosed is a display apparatus including a display panel configured to emit light, a rear structure disposed on a rear surface of the display panel, a sound generating device fixed to the rear structure and configured to vibrate the display panel, and an insulation member disposed between the display panel and the sound generating device.

Systems and methods of driving plate loudspeakers with different parameters based on frequency region in a way similar to typical cone driver crossover networks are described. These systems and methods may be implemented using arrays of independently controlled drivers which allow a designer to emphasize or de-emphasize certain modes in certain frequency bands. Tuning the characteristics of the plate's motion can also affect the acoustical properties in a larger space rather than just at a single location. The systems and methods described herein can grant a designer a degree of control over the characteristics and performance of the plate.

A resonator comprising an outer wooden cabinet with a distributed mode transducer mounted in an outer front face of the cabinet, a reflex port disposed in the outer front face of the cabinet, and a resonator plate disposed within the cabinet, thereby forming a ported resonance chamber between the cabinet front face and the resonator plate and a sealed chamber between the resonator plate and a rear face of the cabinet.

Disclosed is a display apparatus including a display panel configured to emit light, a rear structure disposed on a rear surface of the display panel, a sound generating device fixed to the rear structure and configured to vibrate the display panel, and an insulation member disposed between the display panel and the sound generating device.

Disclosed are a surface sound-emitting apparatus and an electronic device. The surface sound-emitting apparatus comprises an exciter, a vibrating part and a connection element, wherein the connection element is of a sheet-like structure, the vibrating part is disposed on the connection element, the exciter is disposed on the vibrating part, an edge of the connection element is configured to connect to the remaining portion of a surface of an electronic device, the connection element and the remaining portion of the surface together constitute the surface, the connection element is configured to provide an elastic recovery force, and the exciter is configured to provide a driving force.

A display apparatus includes a display panel configured to display an image by emitting light, and a sound generating device on a rear surface of the display panel. The sound generating device includes a bobbin, and a protection member on the bobbin.

A display apparatus includes: a display panel configured to display an image, the display panel including first, second, and third areas, a sound-generating device in at least one among the first, second, and third areas on a rear surface of the display panel, and at least one partition for dividing the first, second, and third areas from each other, the at least one partition including a first side and a second side at an angle to the first side, the second side including at least one member perpendicular to the second side, wherein: the first area is a left area of the display panel, the second area is a right area of the display panel, the third area is a central area of the display panel, and the member is in the third area.

A piezoelectric MEMS transducer formed in a body of semiconductor material, which has a central axis and a peripheral area and comprises a plurality of beams, transverse to the central axis and having a first end, coupled to the peripheral area of the body, and a second end, facing the central axis; a membrane, transverse to the central axis and arranged underneath the plurality of beams; and a pillar, parallel to the central axis and rigid with the second end of the beams and to the membrane. The MEMS transducer further comprises a plurality of piezoelectric sensing elements arranged on the plurality of beams.