Abstract: An apparatus includes a display member configured to display an image, a front member at a front surface of the display member, a vibration apparatus at a rear surface of the display member, and an adhesive member between the display member and the front member, the adhesive member including a piezoelectric material.

Abstract: An apparatus includes a display member configured to display an image, a front member at a front surface of the display member, a vibration apparatus at a rear surface of the display member, and an adhesive member between the display member and the front member, the adhesive member including a piezoelectric material.

Abstract: A foldable display device includes a display panel including a folding area and a non-folding area, and a support substrate disposed under the display panel, the support substrate includes a first metal sheet including a plurality of wavy curved portions and a first planarization layer disposed on the first metal sheet, and the support substrate includes a second metal sheet disposed on the first planarization layer and having a planar surface shape and a second planarization layer disposed under the first metal sheet, therefore, since the support substrate integrated into a single layer is disposed under the display panel, folding properties of the display device may be improved, and an overall thickness of the display device may be decreased and a transfer of a pattern boundary or a folding area boundary can be minimized.

Abstract: A foldable display device includes a display panel which includes a folding area and non-folding areas on some sides of the folding area, and a hinge unit which is disposed in an area corresponding to the folding area below the display panel to in-fold or out-fold the display panel. The hinge unit includes a plurality of rotary shafts and a plurality of coupling links disposed between the plurality of rotary shafts. Accordingly, the foldable display device can be bi-directionally (e.g., inwardly or outwardly) folded by the hinge unit with a simple structure. Further, a radius of curvature during the folding can be desirably changed by adjusting a component of the hinge unit, for example, a number of the plurality of rotary shafts and the plurality of coupling links, a cross-sectional length, and the like.

Abstract: An apparatus includes a display member configured to display an image, a front member at a front surface of the display member, a vibration apparatus at a rear surface of the display member, and an adhesive member between the display member and the front member, the adhesive member including a piezoelectric material.

Abstract: A sound apparatus includes a first vibration member, a second vibration member adjacent to the first vibration member, a third vibration member adjacent to the second vibration member, a first vibration apparatus configured to vibrate the first vibration member and the second vibration member and output a sound of a first pitched sound band and a sound of a second pitched sound band which differ, and a second vibration apparatus disposed at a rear surface of the third vibration member and configured to vibrate the third vibration member and output a sound of a third pitched sound band which differs from the sound of the first pitched sound band.

Abstract: A foldable display apparatus includes a display panel having a light-emitting element disposed thereon, a cover window disposed on top of the display panel, a bottom plate disposed beneath the display panel, a bellows for supporting at least a portion of the bottom plate, a first support coupled with one end of the bellows, and an edge coupled with the other end of the bellows.

Abstract: Provided is a display device. The display device includes a display panel; a support substrate supporting the display panel below the display panel and including a plurality of opening patterns; and an adhesive layer which is disposed on the support substrate and includes a plurality of first areas provided so as to correspond to each of the plurality of opening patterns and a second area enclosing the plurality of first areas and having a Young's modulus lower than that of the plurality of first areas. Each of the first area is larger than the corresponding opening pattern.

Abstract: The present disclosure relates to a flexible display device, and according to an aspect of the present disclosure, a flexible display device includes a display panel including a folding area and a non-folding area; a back plate which is disposed below the display panel and supports the display panel; and a bottom plate which is disposed below the back plate and includes a plurality of grooves so as to correspond to the folding area, and a plurality of nano helix structures disposed so as to correspond to the plurality of grooves. Therefore, the flexible display device forms a groove pattern in the bottom plate, and includes a nano helix structure in each of the plurality of grooves, to effectively relieve the folding stress and reduce the visibility of the pattern, finally an appearance quality may be improved.

Abstract: The present disclosure relates to a flexible display device, and more particularly a flexible display device includes a display panel, a back plate disposed below the display panel; and a plate bottom disposed below the back plate, and the back plate includes a base member and a hard coating layer disposed on at least one surface of the base member. The present disclosure is provide a flexible display device which minimizes dent or puncture failures and reduces a rigidity difference between the folding area and the non-folding area without including a plate top or an impact absorption layer to have excellent durability.

Abstract: A foldable display device includes a display panel including a folding area and a non-folding area, and a support substrate disposed under the display panel, the support substrate includes a first metal sheet including a plurality of wavy curved portions and a first planarization layer disposed on the first metal sheet, and the support substrate includes a second metal sheet disposed on the first planarization layer and having a planar surface shape and a second planarization layer disposed under the first metal sheet, therefore, since the support substrate integrated into a single layer is disposed under the display panel, folding properties of the display device may be improved, and an overall thickness of the display device may be decreased and a transfer of a pattern boundary or a folding area boundary can be minimized.

Abstract: A foldable display device includes a display panel which includes a folding area and non-folding areas on some sides of the folding area, and a hinge unit which is disposed in an area corresponding to the folding area below the display panel to in-fold or out-fold the display panel. The hinge unit includes a plurality of rotary shafts and a plurality of coupling links disposed between the plurality of rotary shafts. Accordingly, the foldable display device can be bi-directionally (e.g., inwardly or outwardly) folded by the hinge unit with a simple structure. Further, a radius of curvature during the folding can be desirably changed by adjusting a component of the hinge unit, for example, a number of the plurality of rotary shafts and the plurality of coupling links, a cross-sectional length, and the like.

Abstract: A flexible display device includes: a display panel including a folding area and a non-folding area; and a back plate which includes a base layer which supports the display panel, below the display panel and includes a plurality of grooves on a bottom surface corresponding to the folding area and a filler which is filled in at least a part of the plurality of grooves, and the filler includes a metal fiber. According to the exemplary embodiment of the present disclosure, components such as a plate top, a plate bottom, and a damping layer are not included, but a mechanical property such as impact resistance is satisfied and the thickness of the display device is minimized so that the folding characteristic and the reliability are significantly improved. Therefore, a flexible display device having a larger curvature than that of the related art may be easily implemented.

Abstract: The present invention relates to a damping system that utilizes a space between an inner building and a stair chamber installed outside the inner building to control vibration of an earthquake applied to a building or a building structure, and more particularly, to a damping system utilizing a space between a stair chamber and an inner building, which is installed in a building structure including the inner building and the stair chamber to damp a transverse force due to seismic waves.

Abstract: A flexible substrate, a method for preparing the same, and a display device including the same, and more particularly, to a flexible substrate including: a first polymer layer including a first polymer; second polymer layers which include second polymers and are located above and below the first polymer layer; and first interfacial crosslinked layers which are located between the first polymer layer and the second polymer layers and include a first crosslinked polymer having a network structure in which the first polymer and the second polymer are crosslinked, in which the stiffness of the first polymer layer is higher than the stiffness of the second polymer layer and the softness of the second polymer layer is higher than the softness of the first polymer layer, a method for preparing the same, and a display device including the same.

Abstract: The present invention relates to a damping system that utilizes a space between an inner building and a stair chamber installed outside the inner building to control vibration of an earthquake applied to a building or a building structure, and more particularly, to a damping system utilizing a space between a stair chamber and an inner building, which is installed in a building structure including the inner building and the stair chamber to damp a transverse force due to seismic waves.

Abstract: Disclosed is a buttress assembly located outside side walls comprising non-bearing walls located in a long side direction of an existing building and comprising concrete, the buttress assembly including a plurality of reinforcing steel structures extending in a short side direction of the existing building, connected to the existing building by anchors, and arranged in a vertical direction of the side walls.

Abstract: Disclosed is a buttress assembly located outside side walls comprising non-bearing walls located in a long side direction of an existing building and comprising concrete, the buttress assembly including a plurality of reinforcing steel structures extending in a short side direction of the existing building, connected to the existing building by anchors, and arranged in a vertical direction of the side walls.

Abstract: An OLED display includes a pixel having a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel, each of which displays a different color, a gate line for transmitting gate signals to the pixel, a data line for transmitting data signals to the pixel, a first driving voltage line that transmits a driving voltage to the pixel and is substantially parallel to the data line, and a second driving voltage line that is connected to the first driving voltage line and is substantially parallel to the gate line.

Abstract: An organic light emitting diode display device includes; a display panel including a pixel connected to a gate line and a data line, gate and data driving circuits which drive the gate and data lines, respectively, at least one temperature sensor disposed on the display panel which senses a temperature of the display panel, a sensor driving unit which converts a temperature signal supplied from the temperature sensor into a digital temperature signal, a timing controller which supplies the gate driving circuit with a control signal, supplies the data driving circuit with a control signal and a data signal, and generates a gamma reference voltage control signal according to the digital temperature signal, and a digital to analog converter which generates a gamma reference voltage which varies according to the gamma reference voltage control signal and supplies it to the data driving circuit.