Abstract: A display device including a substrate and a plurality of pixels in a display region of the substrate. Each of the pixels includes first and second sub-pixels, and each of the first and second sub-pixels has a light emitting region for emitting light. The first sub-pixel includes a first light emitting element in the light emitting region and configured to emit visible light. The second sub-pixel includes a second light emitting element in the light emitting region and configured to emit infrared light and a light receiving element configured to receive the infrared light emitted from the second light emitting element to detect a user's touch. The second light emitting element and the light receiving element in the second sub-pixel are electrically insulated from and optically coupled to each other to form a photo-coupler.

Abstract: A light-emitting device includes: a substrate; a unit light-emitting area disposed on the substrate; first and second electrodes disposed in the unit light-emitting area to be separated from each other; a plurality of rod-shaped LEDs disposed between the first and second electrodes; a reflective contact electrode disposed on opposite ends of the rod-shaped LEDs to electrically connect the rod-shaped LEDs to the first and second electrodes; and a light-transmitting structure disposed between the first and second electrodes and extending to cross the rod-shaped LEDs.

Abstract: A display device includes: a pixel region including a plurality of alignment areas and a non-alignment area adjacent to the plurality of alignment areas; a plurality of electrodes extending in a direction and be spaced apart from each other in the pixel region; a plurality of light-emitting elements disposed between the plurality of electrodes in the plurality of alignment areas and including at least one end of the plurality of light-emitting elements disposed on one of the plurality of electrodes; and an alignment-inducing layer including a first part disposed in the non-alignment area.

Abstract: A display device includes a first pixel and a second pixel; a light emitting layer; a color conversion layer on the light emitting layer; and a color filter layer on the color conversion layer, the light emitting layer including one or more light emitting elements in the first pixel and the second pixel, the color conversion layer including a first color conversion layer in the first pixel and a second color conversion layer in the second pixel. The color filter layer includes a first color filter layer in the first pixel and a second color filter layer in the second pixel, the light emitting elements capable of emitting a first light having a first wavelength, each of the first color conversion layer and the second color conversion layer including first color conversion particles and second color conversion particles.

Abstract: A light emitting device, includes: a substrate; a light emitting element on the substrate, the light emitting element having a first end portion and a second end portion arranged in a longitudinal direction; one or more partition walls disposed on the substrate, the one or more partition walls being spaced apart from the light emitting element; a first reflection electrode adjacent the first end portion of the light emitting element; a second reflection electrode adjacent the second end portion of the light emitting element; a first contact electrode connected to the first reflection electrode and the first end portion of the light emitting element; an insulating layer on the first contact electrode, the insulating layer having an opening exposing the second end portion of the light emitting element and the second reflection electrode to the outside; and a second contact electrode on the insulating layer.

Abstract: A method of manufacturing a light emitting element includes providing light emitting patterns on a substrate, providing a soft material layer between the light emitting patterns, deforming the soft material layer, and separating the light emitting patterns from the substrate.

Abstract: Provided is a display device comprising a substrate including a first sub-display area and a main display area surrounding the first sub-display area, a first transistor disposed on the main display area without overlapping the first sub-display area, a via insulating layer to cover the first transistor, a first light emitting element to overlap the main display area without overlapping the first sub-display area, a second light emitting element to overlap the first sub-display area without overlapping the main display area, and a transparent oxide layer to overlap the first sub-display area without overlapping the main display area, wherein the transparent oxide layer includes a conductive portion and a non-conductive portion, the first light emitting element is disposed to overlap the first transistor while being connected thereto, and the second light emitting element is connected to the conductive portion of the transparent oxide layer.

Abstract: Provided are a light-emitting element ink and a method for manufacturing a display apparatus. The light-emitting element ink comprises: a light-emitting element solvent; and a plurality of light-emitting elements dispersed in the light-emitting element solvent and each comprising a plurality of semiconductor layers and an insulation film partially surrounding the outer surfaces of the semiconductor layers, wherein the light-emitting element solvent includes a fatty acid ester-based compound having a melting point in the range of 0° C. to 15° C.

Abstract: According to an embodiment, a pixel may include a first area and a second area partitioned in a first direction, (1-1)-th and (2-1)-th electrodes disposed in the first area and spaced apart in a second direction different from the first direction, (1-2)-th and (2-2)-th electrodes disposed in the second area and spaced apart in the second direction, light emitting elements disposed between the (1-1)-th and (2-1)-th electrodes and between the (1-2)-th and (2-2)-th electrodes, a contact electrode disposed on the (1-1)-th and (2-1)-th electrodes and the (1-2)-th and (2-2)-th electrodes, an insulating layer disposed between each of the (1-1)-th and (2-1)-th electrodes and the (1-2)-th and (2-2)-th electrodes, and the contact electrode, and including a first opening exposing a portion of the (1-1)-th electrode; and a first intermediate electrode electrically connecting the contact electrode on the (2-1)-th electrode and the contact electrode on the (1-2)-th electrode.

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: A display includes: a first electrode including a first electrode line and a second electrode line; a light-emitting device between the first electrode line and the second electrode line; a first contact electrode including a first pattern overlapping the first electrode line and one end of the light-emitting device and a second pattern overlapping the second electrode line and the other end of the light-emitting device; a second electrode on the light-emitting device and overlapping the first electrode and the light-emitting device; and a second contact electrode between the light-emitting device and the second electrode, wherein a light-emitting device includes a plurality of semiconductor layers and an insulating film partially surrounding the external surfaces of the semiconductor layers, a main body unit, and a light-emitting unit on the main body unit and having a shorter length than the main body unit.

Abstract: A light emitting element includes: a first semiconductor layer; an active layer disposed on the first semiconductor layer; a second semiconductor layer disposed on the active layer; a third semiconductor layer comprising a third-first semiconductor layer and a third-second semiconductor layer stacked on the second semiconductor layer; and a fourth semiconductor layer disposed on the third-second semiconductor layer. The third semiconductor layer is a tunneling junction layer. A sum of a thickness of the fourth semiconductor layer and the third-second semiconductor layer is different from a sum of a thickness of the second semiconductor layer and the third-first semiconductor layer.

Abstract: A light emitting element ink includes a light emitting element solvent, and a light emitting element dispersed in the light-emitting diode solvent. The light emitting element includes semiconductor layers and an insulating film surrounding the outer surface of the semiconductor layers, wherein the light-emitting diode solvent is an organic solvent having a pKa value in a range of about 7 to about 15.

Abstract: A light-emitting device includes: a substrate; a unit light-emitting area disposed on the substrate; first and second electrodes disposed in the unit light-emitting area to be separated from each other; a plurality of rod-shaped LEDs disposed between the first and second electrodes; a reflective contact electrode disposed on opposite ends of the rod-shaped LEDs to electrically connect the rod-shaped LEDs to the first and second electrodes; and a light-transmitting structure disposed between the first and second electrodes and extending to cross the rod-shaped LEDs.

Abstract: A display device includes a substrate including a display unit including a plurality of pixels and a protrusion protruding from an edge of the display unit, the plurality of pixels including a first pixel on an outermost region of the display unit and a second pixel adjacent to the first pixel; a driver on the protrusion; and a fan-out line to electrically connect the first pixel and the driver, wherein at least a portion of the fan-out line is on the display unit between the first pixel and the second pixel in a plan view.

Abstract: An inspection device, and a method of inspecting and a method of repairing a display panel using the inspection device are provided. The method of inspecting the display panel including light emitting elements includes acquiring an image of the display panel, and determining an alignment degree of the light emitting elements in the display panel.

Abstract: A display device includes a first base, a pixel electrode on the first base, a pixel defining layer having an opening that at least partially exposes the pixel electrode, a light emitting layer on the pixel electrode, an auxiliary electrode on the same layer as the pixel electrode, a partition wall on the auxiliary electrode that at least partially exposes a side surface of the auxiliary electrode, an organic layer on the partition wall, and a common electrode continuously arranged on the light emitting layer and the organic layer, wherein a side surface of the partition wall has a reverse-tapered shape, and the common electrode contacts the side surface of the auxiliary electrode.

Abstract: A light emitting element includes a first semiconductor layer, a second semiconductor layer on the first semiconductor layer, and an element active layer between the first semiconductor layer and the second semiconductor layer. The first semiconductor layer, the element active layer, and the second semiconductor layer are sequentially located along a first direction. A thickness of the first semiconductor layer in the first direction is greater than a thickness of the second semiconductor layer in the first direction. A cross section of the element active layer taken along the first direction includes a first side facing the first semiconductor layer, a second side facing the second semiconductor layer, a first lateral side connecting one end of the first side to one end of the second side, and a second lateral side connecting an other end of the first side to an other end of the second side.

Abstract: A method for manufacturing a display device including a substrate including a display area and a non-display area located outside the display area, the display area including pixel areas, is provided. First switching elements are formed in the pixel areas, respectively, and a circuit element layer that includes reference voltage wire in the non-display area and electrically connected to the first switching elements is formed. Pixel electrodes that include first pixel electrodes in the pixel areas on the circuit element layer, respectively, and electrically connected through the first switching elements to the reference voltage wire, and second pixel electrodes facing the first pixel electrodes, are formed. A plurality of light emitting elements are arranged between the first pixel electrodes and the second pixel electrodes. A first source voltage is applied to the reference voltage wire and a second source voltage is applied to the second pixel electrodes.

Abstract: A pixel includes a first light source including at least one first light emitting element between a first split electrode and a second power supply; a second light source unit including at least one second light emitting element between a second split electrode and the second power supply; a driving-current generator including a first transistor between a first power supply and the first and second light source units and generating a driving current corresponding to a first data signal; a first switching unit including a first switching element between the driving-current generator and the first light source; and a second switching unit including a second switching element between the driving-current generator and the second light source unit and controlling an electrical connection between the first and second light source units in response to a second data signal.