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, and at least one vibration module on a rear surface of the display panel, the at least one vibration module including a piezoelectric composite layer including a plurality of sub-modules configured to vibrate the display panel, each of the plurality of sub-modules including: a plurality of first portions including a piezoelectric characteristic, and a plurality of second portions having flexibility, each of the plurality of second portions being between a respective pair of the plurality first portions, wherein the plurality of first portions in the respective sub-modules are arranged in a same direction or are partially arranged in different directions.

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 display device incudes: a display panel; a plurality of vibro-acoustic elements coupled to the display panel and spaced apart from each other on a lower surface of the display panel; and a bracket disposed below the display panel and including a bottom plate, where a plurality of receiving holes is defined through the bottom plate. The plurality of vibro-acoustic elements is disposed in the plurality of receiving holes, respectively, a vibration space is defined by a portion of the bottom plate defining a receiving hole of the receiving holes, which is recessed from an upper surface toward a lower surface of the bottom plate, and audio frequencies in different frequency bands, respectively, is produced from regions in which the plurality of vibro-acoustic elements are disposed.

Disclosed is a display apparatus that may include a display panel configured to display an image by emitting light, a supporting member disposed on a rear surface of the display panel, a sound generating device disposed between the supporting member and the display panel, and a plurality of partitions at a predetermined interval from the sound generating device, wherein the partitions have different compression force deflections.

A display device includes: a display panel including a first substrate, a second substrate, and a light emitting element layer disposed between the first substrate and the second substrate, where the light emitting element outputs light to the second substrate; a first sound generator disposed on a surface of the first substrate, where the first sound generator vibrates the display panel to output a sound; and a first buffer member disposed on the surface of the first substrate, where a height of the first buffer member is less than a height of the first sound generator.

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.

An in-ear receiver can be used in a headset and/or hearing aid and includes a housing in which at least one ear canal section is configured to be inserted into an ear canal of a wearer when the in-ear receiver is used as intended. The housing defines at least one outer contour that is configured with at least in one section adapted to the ear canal of the wearer. The in-ear receiver includes a sound transducer arranged in the housing, and at least one resonant cavity, which is formed in the housing and is divided by the sound transducer into a front volume and a rear volume. The sound transducer is a MEMS sound transducer, and the front volume and/or the rear volume have/has an inner contour adapted to the ear canal.

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 display apparatus includes: a display panel configured to display an image, a sound generation device configured to vibrate the display panel to generate sound, a supporting member on a rear surface of the display panel, and a partition surrounding the sound generation device, the partition including an edge having a partition edge contour shape that differs from a panel edge contour shape of the display panel.