Abstract: Provided are display devices and methods of driving the same. A display device may include: a display panel, a main sound generator and a sub-sound generator disposed on a surface of the display panel. The main sound generator outputs sound in a first directional mode, and each of the main sound generator and the sub-sound generator outputs sound in a second directional mode. Each directional mode may be a mode in which sound is directed towards a particular viewer's location.

Abstract: A display device includes: a display panel including a first display area including first sub-pixels to display an image, and a second display area including second sub-pixels and a transmission area adjacent to the second sub-pixels; and an optical device overlapping the second display area of the display panel and configured to detect light incident through the transmission area. Each of the second sub-pixels includes: a first contact electrode; a second contact electrode located apart from the first contact electrode; and a light emitting element between the first contact electrode and the second contact electrode.

Abstract: A display device includes a first electrode, a second electrode spaced apart from the first electrode to face the first electrode, a first insulation layer, at least one light emitting element, a second insulation layer, a first contact electrode, and a second contact electrode. The first insulation layer includes an overlapping area which overlaps the at least one light emitting element, a first non-overlapping area which extends outward from the first end of the at least one light emitting element and does not overlap the at least one light emitting element, and a second non-overlapping area which extends outward from the second end of the at least one light emitting element and does not overlap the at least one light emitting element.

Abstract: A display device includes a thin-film transistor layer disposed on a substrate and including thin-film transistors; and an emission material layer disposed on the thin-film transistor layer. The emission material layer includes light-emitting elements each including a first light-emitting electrode, an emissive layer and a second light-emitting electrode, light-receiving elements each including a first light-receiving electrode, a light-receiving semiconductor layer and a second light-receiving electrode, and a first bank disposed on the first light-emitting electrode and defining an emission area of each of the light-emitting elements. The light-receiving elements are disposed on the first bank.

Abstract: An apparatus includes a base including a receiving portion that receives a substrate on which semiconductor elements are disposed; and at least one ultrasonic generator that generates and applies ultrasonic waves to the substrate placed in the base.

Abstract: A display device comprises a substrate including a display area and a non-display area, and pixels disposed in the display area, each of the pixels including sub-pixels. Each of sub-pixels includes a pixel circuit layer, and a display element layer including at least one light emitting element. The display element layer includes first and second electrodes spaced apart from each other, the light emitting element disposed between the first electrode and second electrode, a first contact electrode that electrically connects an end of the light emitting element to the first electrode, and a second contact electrode that electrically connects another end of the light emitting element to the second electrode. Each of sub-pixels includes a first area in which the pixel circuit layer is disposed, and a second area adjacent to the first area. The second area includes a transmission area through which the light passes.

Abstract: An apparatus for manufacturing a light emitting display device includes a substrate transfer stage including a plurality of support plates arranged at an interval in a first direction, each of the plurality of support plates extending in a second direction; and at least one electric-field application module disposed on at least one side of the substrate transfer stage. The at least one electric-field application module includes a probe head including at least one probe pin; and a driver connected to the probe head to move the probe head at least up and down.

Abstract: A display device includes a display panel including a display layer having light-emitting elements on the substrate, and a sensor electrode layer on the display layer. The sensor electrode layer includes sensor electrodes in a sensor area, sensor lines electrically connected to the sensor electrodes and a first conductive pattern spaced apart from the sensor lines and sensor electrodes. The sensor lines and the first conductive pattern are in a sensor peripheral area adjacent to the sensor area. The first conductive pattern is an antenna.

Abstract: A display device and a method of manufacturing the same are provided. The display device comprises a first area which extends in a first direction, a second area which extends in the first direction and is alongside the first area in a second direction intersecting the first direction, at least one first light emitting element in the first area, at least one second light emitting element in the second area, at least one first wiring coupled to an end of the first light emitting element in the first area and that extends in the first direction and at least one second wiring coupled to an end of the second light emitting element in the second area and that extends in the first direction, wherein the first wiring and the second wiring are electrically isolated from each other.

Abstract: A dipole alignment device includes an electric field forming part including a stage, and a probe part which form an electric field on the stage; an inkjet printing apparatus including at least one inkjet head which sprays ink including dipoles and a solvent with the dipoles dispersed therein onto the stage; a transportation part comprising a first moving part which moves the electric field forming part in at least one direction; and a light irradiation apparatus including a light irradiation part which applies light to the ink sprayed onto the stage.

Abstract: A display device includes a first electrode, a second electrode spaced apart from the first electrode to face the first electrode, a first insulation layer, at least one light emitting element, a second insulation layer, a first contact electrode, and a second contact electrode. The first insulation layer includes an overlapping area which overlaps the at least one light emitting element, a first non-overlapping area which extends outward from the first end of the at least one light emitting element and does not overlap the at least one light emitting element, and a second non-overlapping area which extends outward from the second end of the at least one light emitting element and does not overlap the at least one light emitting element.

Abstract: A display device includes: a display panel including a first display area including first sub-pixels to display an image, and a second display area including second sub-pixels and a transmission area adjacent to the second sub-pixels; and an optical device overlapping the second display area of the display panel and configured to detect light incident through the transmission area. Each of the second sub-pixels includes: a first contact electrode; a second contact electrode located apart from the first contact electrode; and a light emitting element between the first contact electrode and the second contact electrode.

Abstract: A display device includes a thin-film transistor layer disposed on a substrate and including thin-film transistors; and an emission material layer disposed on the thin-film transistor layer. The emission material layer includes light-emitting elements each including a first light-emitting electrode, an emissive layer and a second light-emitting electrode, light-receiving elements each including a first light-receiving electrode, a light-receiving semiconductor layer and a second light-receiving electrode, and a first bank disposed on the first light-emitting electrode and defining an emission area of each of the light-emitting elements. The light-receiving elements are disposed on the first bank.

Abstract: An apparatus includes a base including a receiving portion that receives a substrate on which semiconductor elements are disposed; and at least one ultrasonic generator that generates and applies ultrasonic waves to the substrate placed in the base.

Abstract: A display device may include: a substrate including a display area and a non-display area; and pixels disposed on the display area, and each including sub-pixels, each sub-pixel including a pixel circuit layer, and a display element layer including a light emitting element. The display element layer includes first and second electrodes spaced apart from each other; a first insulating layer disposed between the pixel circuit layer and the light emitting element; and a second insulating layer disposed on the light emitting element and filling spaces between the first insulating layer and ends of the light emitting element. The light emitting element includes a first conductive semiconductor layer, an active layer enclosing at least one side of the first conductive semiconductor layer, a second conductive semiconductor layer enclosing the active layer, an electrode layer enclosing the second conductive semiconductor layer, and an insulating film covering the electrode layer.

Abstract: Provided are an inkjet printing device, a method for printing bipolar elements, and a method for manufacturing a display device. The inkjet printing device includes an inkjet head disposed above a stage and including a plurality of nozzles through which ink including bipolar elements each having areas doped with partially different polarities is discharged; an actuator disposed in the inkjet head and adjusting an amount of droplet of the ink discharged through the plurality of nozzles; and at least one sensing part disposed in the inkjet head and measuring a number of bipolar elements discharged through the plurality of nozzles.

Abstract: An inkjet printing device includes a stage; an inkjet head disposed above the stage and comprising nozzles through which ink is discharged, the ink including bipolar elements extending in a direction; an ink circulation part which supplies the ink to the inkjet head, and to which the ink remaining after being discharged from the inkjet head is supplied; and at least one sensing part disposed between the inkjet head and the ink circulation part and sensing a number of the bipolar elements that are discharged through the nozzles.

Abstract: An inkjet printing apparatus, a dipole alignment method, and a display device manufacturing method are provided. The inkjet printing apparatus includes a stage, a print head part disposed above the stage, and an electric field generating part that provides an electric field to a space between the stage and the print head part. The dipole alignment method includes providing an electric field at an area above a target substrate, spraying ink including a dipole onto the target substrate through the area, and landing the dipole on the target substrate. The display device manufacturing method includes preparing a base layer on which first and second electrodes are disposed, spraying ink including a light emitting element onto the base layer through the area, landing the light emitting element between the first and second electrodes.

Abstract: A deposition mask for making a display device, the deposition mask includes: a frame including a first opening; a first member disposed above the first opening of the frame and including a first portion surrounding at least one second opening and a second portion disposed in the second opening and physically separated from the first portion; and a second member disposed on the first member and including a first connecting portion connected to the frame and a second mesh portion overlapping the second portion.

Abstract: A display device may include: a substrate including a display area and a non-display area; and pixels in the display area, and each including sub-pixels. Each sub-pixel may include a pixel circuit layer, and a display element layer including at least one light emitting element. The display element layer may include: a first electrode on the pixel circuit layer; a second electrode on the first electrode and electrically insulated from the first electrode; the light emitting element including a first end portion coupled to the first electrode and a second end portion coupled to the second electrode, and between the first electrode and the second electrode; an intermediate layer enclosing at least one area of the light emitting element, and on the first electrode; a connection line electrically connected to the second electrode. The second electrode may be on the intermediate layer.