Abstract: A display device that includes a display panel having a first substrate, a second substrate, and a light-emitting element layer. The light emitting layer is disposed between the first and second substrates and is configured to emit light in a direction toward the second substrate. A first sound generator is disposed on a first surface of the first substrate and is configured to vibrate the display panel to output a first sound. A first heat dissipation film is disposed between the first substrate and the first sound generator.

Abstract: 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.

Abstract: A display device includes: a display panel including a first substrate and a light emitting element layer disposed on the first substrate; and a sound generator disposed on one surface of the first substrate, where the sound generator vibrates the display panel to output a sound. The sound generator includes: a first vibration generator which vibrates the display panel by generating a magnetic force using a first voice coil therein; and a second vibration generator including a vibration layer which contracts or expands based on a voltage applied thereto to vibrate the display panel, where the first vibration generator and the second vibration generator overlap each other in a thickness direction of the display panel.

Abstract: A display device includes a display panel displaying an image, a lower frame disposed under the display panel, a first vibration element attached to a lower surface of the display panel and which generates a first vibration based on a first vibration signal, a second vibration element disposed under the lower frame and which generates a second vibration based on a second vibration signal, and a first vibration driver circuit which provides the first vibration signal to the first vibration element, where a phase of the second vibration signal is opposite to a phase of the first vibration signal.

Abstract: A display device including a display panel configured to display an image; a touch sensing device configured to sense a touch of an object; a sound driver configured to generate and transmit a first sound driving signal and a second sound driving signal according to first sound data and second sound data; and a sound generator configured to generate a sound according to the first and second sound driving signals, such that a sound pressure level in a first frequency range is between first and second sound pressure levels in a first operating mode and a second operating mode, wherein the display device is in the first operating mode in response to the touch sensing device not sensing the touch of the object, and the display device is in the second operating mode in response to the touch sensing device sensing the touch of the object.

Abstract: Provided are a display device. The display device comprises a display panel displaying an image, a main circuit board disposed under the display panel, a first vibration element attached to a lower surface of the display panel and providing first vibration in accordance with a first vibration signal, a second vibration element disposed on the main circuit board and providing second vibration in accordance with a second vibration signal, and a first vibration driver circuit providing the first vibration signal to the first vibration element, wherein a phase of the second vibration signal is opposite to a phase of the first vibration signal.

Abstract: A nonvolatile memory device and an operating method are provided. The nonvolatile memory device includes a memory cell array including a plurality of planes, each plane including a plurality of memory blocks, an address decoder connected to the memory cell array, a voltage generator configured to apply an operating voltage to the address decoder, a page buffer circuit including page buffers corresponding to each of the planes, a data input/output circuit connected to the page buffer circuit configured to input and output data and a control unit configured to control the operation of the address decoder, the voltage generator, the page buffer circuit, and the data input/output circuit, wherein the control unit is configured to operate in a multi-operation or a single operation by checking whether a memory block of an access address is a bad block.

Abstract: A nonvolatile memory device includes processing circuitry configured to apply a sub-voltage to the first word lines, determine a desired first read voltage based on a threshold voltage distribution of a plurality of first memory cells connected to the first word lines, apply the sub-voltage to the second word lines, determine a desired second read voltage based on a threshold voltage distribution of a plurality of second memory cells connected to the second word lines, apply the desired first read voltage to the first word lines while simultaneously reading the first memory cells connected to the first word lines, and apply the desired second read voltage different from the desired first read voltage to the second word lines while simultaneously reading the second memory cells connected to the second word lines.

Abstract: A display device includes a display panel including a display area including: a stretchable display area at which the display panel is stretchable, disposed at an outer edge of the display device, and a normal display area having flexibility less than that of the stretchable display area, the normal display area disposed further from the outer edge of the display device than the stretchable display area; a cover window disposed on the display panel, including a peripheral portion and a central portion which is disposed further from the outer edge of the display device than the peripheral portion; and a vibration member disposing the normal display area having the flexibility less than that of the stretchable display area between the central portion of the cover window and the vibration member along a thickness direction of the display device.

Abstract: A display device including a display panel, a sound generator disposed on one surface of the display panel, and a porous layer disposed adjacent to the sound generator, in which the porous layer includes a first coupling layer, a second coupling layer, and an intermediate layer interposed between the first and second coupling layers and including a plurality of air pockets, and the first coupling layer and the intermediate layer do not overlap the sound generator in a thickness direction of the display panel.

Abstract: A display device includes a display panel which includes a first substrate, a second substrate, and a light emitting element layer disposed between the first substrate and the second substrate and outputting light to the second substrate, a first sound generator which is disposed on a surface of the first substrate and outputs sound by vibrating the display panel, and a first buffer member which is disposed on the surface of the first substrate, where a height of the first buffer member is smaller than that of the first sound generator.

Abstract: A display device that includes a display panel having a first substrate, a second substrate, and a light-emitting element layer. The light emitting layer is disposed between the first and second substrates and is configured to emit light in a direction toward the second substrate. A first sound generator is disposed on a first surface of the first substrate and is configured to vibrate the display panel to output a first sound. A first heat dissipation film is disposed between the first substrate and the first sound generator.

Abstract: The display device comprises: a display panel; a sound generator under the display panel; a frame disposed under the display panel and the sound generator; and a porous layer disposed adjacent to the sound generator between the display panel and the frame and having a plurality of air pockets, wherein the porous layer has a porosity of about 90% or more.

Abstract: A nonvolatile memory device and an operating method are provided. The nonvolatile memory device includes a memory cell array including a plurality of planes, each plane including a plurality of memory blocks, an address decoder connected to the memory cell array, a voltage generator configured to apply an operating voltage to the address decoder, a page buffer circuit including page buffers corresponding to each of the planes, a data input/output circuit connected to the page buffer circuit configured to input and output data and a control unit configured to control the operation of the address decoder, the voltage generator, the page buffer circuit, and the data input/output circuit, wherein the control unit is configured to operate in a multi-operation or a single operation by checking whether a memory block of an access address is a bad block.

Abstract: A display device includes: a display panel including a first substrate and a light emitting element layer disposed on the first substrate; and a sound generator disposed on one surface of the first substrate, where the sound generator vibrates the display panel to output a sound. The sound generator includes: a first vibration generator which vibrates the display panel by generating a magnetic force using a first voice coil therein; and a second vibration generator including a vibration layer which contracts or expands based on a voltage applied thereto to vibrate the display panel, where the first vibration generator and the second vibration generator overlap each other in a thickness direction of the display panel.

Abstract: A display device that includes a display panel having a first substrate, a second substrate, and a light-emitting element layer. The light emitting layer is disposed between the first and second substrates and is configured to emit light in a direction toward the second substrate. A first sound generator is disposed on a first surface of the first substrate and is configured to vibrate the display panel to output a first sound. A first heat dissipation film is disposed between the first substrate and the first sound generator.

Abstract: A display device includes a display panel including a substrate and a pixel array layer disposed on a first surface of the substrate; a first sound generator disposed on a second surface of the substrate, which is opposite to the first surface of the substrate, the first sound generator being configured to vibrate the display panel in accordance with a first sound signal to output first sound; and a second sound generator disposed on the second surface of the substrate, the second sound generator configured to vibrate the display panel in accordance with a second sound signal to output second sound, wherein the first sound includes both sound in a low-frequency range and sound in a high-frequency range, which is higher than the low-frequency range, and the second sound includes sound in the high-frequency range.

Abstract: A nonvolatile memory device includes processing circuitry configured to apply a sub-voltage to the first word lines, determine a desired first read voltage based on a threshold voltage distribution of a plurality of first memory cells connected to the first word lines, apply the sub-voltage to the second word lines, determine a desired second read voltage based on a threshold voltage distribution of a plurality of second memory cells connected to the second word lines, apply the desired first read voltage to the first word lines while simultaneously reading the first memory cells connected to the first word lines, and apply the desired second read voltage different from the desired first read voltage to the second word lines while simultaneously reading the second memory cells connected to the second word lines.

Abstract: A display device includes: a display panel including a first substrate and a light emitting element layer disposed on the first substrate; and a sound generator disposed on one surface of the first substrate, where the sound generator vibrates the display panel to output a sound. The sound generator includes: a first vibration generator which vibrates the display panel by generating a magnetic force using a first voice coil therein; and a second vibration generator including a vibration layer which contracts or expands based on a voltage applied thereto to vibrate the display panel, where the first vibration generator and the second vibration generator overlap each other in a thickness direction of the display panel.