A sound inspection method of a display device and a sound inspection device including preparing a display device including a display panel and a sound generator disposed on a first surface of the display panel, placing a vibration sensor on a second surface opposite to the first surface of the display panel, vibrating the sound generator at a first reference frequency, vibrating the display panel, and then sensing a vibration of the vibration sensor that vibrates along with a vibration of the display panel; and determining whether a frequency of the vibration of the vibration sensor is included in a first threshold frequency region.

A sound inspection method of a display device and a sound inspection device including preparing a display device including a display panel and a sound generator disposed on a first surface of the display panel, placing a vibration sensor on a second surface opposite to the first surface of the display panel, vibrating the sound generator at a first reference frequency, vibrating the display panel, and then sensing a vibration of the vibration sensor that vibrates along with a vibration of the display panel; and determining whether a frequency of the vibration of the vibration sensor is included in a first threshold frequency region.

A display device includes a display panel to display an image; and a sound generator disposed on a surface of the display panel to vibrate the display panel, wherein distances between each of a plurality of side surfaces of the sound generator and each of a plurality of side surfaces of the display panel respectively corresponding to the each of the plurality of side surfaces of the sound generator are substantially equal.

A display device includes a display panel to display an image; and a sound generator disposed on a surface of the display panel to vibrate the display panel, wherein distances between each of a plurality of side surfaces of the sound generator and each of a plurality of side surfaces of the display panel respectively corresponding to the each of the plurality of side surfaces of the sound generator are substantially equal.

A piezoelectric sound generation component is provided that includes a piezoelectric vibration plate, a case with a case body and a lid that accommodates the piezoelectric vibration plate in an inner space formed by the case body and the lid, and a pin terminal provided to the lid so that the pin terminal is abutted on the piezoelectric vibration plate. The case body has a first top wall and a first circumferential wall. The lid has a second top wall, a second circumferential wall, and a protruding portion that contacts the first circumferential wall of the case body. The protruding portion has a first surface that is abutted on a contact surface, facing the first top wall, of the first circumferential wall and a second surface that couples the first surface to the second circumferential wall and is separated from the first circumferential wall.

An ultrasonic speaker comprises a case that has an opened top surface and includes a plurality of protrusions protruding inward on an inner side surface of the case, a piezoelectric element fixed to a bottom surface in the case, and a substrate that is inserted in the case and placed on upper surfaces of the plurality of protrusions.

An ultrasound transducer, wherein the ultrasound transducer includes a membrane including a top portion and a bottom portion, wherein the membrane is configured to vibrate and generate an ultrasound in response to voltage applied the transducer, wherein the membrane includes a perimeter including a plurality of sides and a top surface and a bottom surface with one or more feet extending away from the bottom surface; and a support member that attaches to and connects to the membrane and supports the membrane, wherein the support member includes one or more platforms extending to and attaching to the membrane and a substrate, wherein a first end of the platform connects to the membrane and includes a support portion, wherein the support portion away from the platform, wherein the platform includes the one or more piezoelectric layers, wherein the one or more platforms support and surround the membrane.

An apparatus may enhance a sound characteristic and/or a sound pressure level characteristic. An apparatus includes a vibration member, a vibration apparatus under the vibration member, a plurality of vibration portions overlapping one another, and a connection member connecting at least a portion of the plurality of vibration portions to the vibration member.

An apparatus may enhance a sound characteristic and/or a sound pressure level characteristic. An apparatus includes a vibration member, a vibration apparatus under the vibration member, a plurality of vibration portions overlapping one another, and a connection member connecting at least a portion of the plurality of vibration portions to the vibration member.

An apparatus may include a vibration member, a supporting portion at a rear surface of the vibration member, the supporting portion including a curved portion, and a vibration apparatus at the curved portion to face the rear surface of the vibration member. A display apparatus may include a display member, a supporting portion including a curved portion, a vibration apparatus at the curved portion to face a rear surface of the display member, and a cover member. A vehicle may include an interior material and a vibration generating apparatus.