Abstract: A light emitting diode pixel for a display including a first LED sub-unit, a second LED sub-unit disposed on a first portion of the first LED sub-unit, and a third LED sub-unit disposed on a second portion of the second LED sub-unit, in which each of the first, second, and third LED sub-units includes a first conductivity type semiconductor layer and a second conductivity type semiconductor layer, light generated from the first LED sub-unit is configured to be emitted outside of the light emitting diode pixel through a third portion of the first LED sub-unit different from the first portion, and light generated from the second LED sub-unit is configured to be emitted outside of the light emitting diode pixel through a fourth portion of the second LED sub-unit different from the second portion.

Abstract: An embodiment of the present specification provides a method for preparing a catalyst for preparing a carbon nanotube, comprising: (a) dissolving a main catalyst precursor, a support precursor, a cocatalyst precursor and a precipitation inhibitor in a solvent to prepare a precursor solution; and (b) pyrolyzing the precursor solution by spraying the precursor solution into a reactor, wherein a mole fraction of the precipitation inhibitor to the cocatalyst precursor is 0.1 to 1.5.

Abstract: A light emitting device including a light emitting structure including a plurality of light emitting parts, a dielectric structure disposed outside the light emitting structure, and a plurality of pads disposed on a first surface of the light emitting structure and electrically coupled with the light emitting parts, in which outer sidewalls of the pads are disposed inside an outer sidewall of the light emitting structure and an outer sidewall of the dielectric structure, at least one of the pads extends to a first surface of the dielectric structure, and the first surface of the dielectric structure is coplanar with the first surface of the light emitting structure.

Abstract: A display device includes a substrate including an emission area and a non-emission area and in which a plurality of sub-pixels are defined, first electrodes disposed in the plurality of sub-pixels, respectively, a bank that is disposed in the non-emission area between the plurality of sub-pixels, and exposes the first electrode through an opening, a protrusion disposed in a second non-emission area of the non-emission area which is divided into a first non-emission area at a flat top surface of the bank and the second non-emission area at an inclined top surface of the bank, an organic layer disposed on the first electrodes, and a second electrode disposed on the organic layer.

Abstract: A headlamp device includes a headlamp, an object detector, and a controller. The headlamp is mounted on a vehicle and includes a light emitting unit composed of multiple light emitting cells. The object detector detects an object around the vehicle and generates an object detection signal including object coordinates corresponding to a location of the detected object. The controller controls light of the headlamp based on information on the object coordinates. The controller may control the light emitting unit such that at least some light emitting cells are turned off according to an object detection signal.

Abstract: A display apparatus includes a display substrate, and light emitting devices arranged on an upper surface of the display substrate. At least one of the light emitting devices includes a first LED unit including a first light emitting stack, a second LED unit including a second light emitting stack, and a third LED unit including a third light emitting stack. Each of the first to third light emitting stacks includes a first conductivity type semiconductor layer and a second conductivity type semiconductor layer. the first conductivity type semiconductor layer and the second conductivity type semiconductor layer in each of the first to third light emitting stacks are stacked in a horizontal direction with respect to the upper surface of the display substrate. At least one of the second conductivity type semiconductor layers in the first to third light emitting stacks is divided into two regions.

Abstract: A display apparatus including a display substrate, light emitting devices disposed on the display substrate, circuit electrodes disposed between the light emitting devices and the display substrate, and a transparent layer covering the light emitting devices and the circuit electrodes, in which at least one of the light emitting devices includes a first LED sub-unit configured to emit light having a first wavelength, a second LED sub-unit adjacent to the first LED sub-unit and configured to emit light having a second wavelength, a third LED sub-unit adjacent to the second LED sub-unit and configured to emit light having a third wavelength, and a substrate disposed on the third LED sub-unit, in which a difference in refractive indices between the transparent layer and air is less than a difference in refractive indices between the substrate and a semiconductor layer of the third LED sub-unit.

Abstract: A display apparatus includes a display substrate, and light emitting devices arranged on an upper surface of the display substrate. At least one of the light emitting devices includes a first LED unit including a first light emitting stack, a second LED unit including a second light emitting stack, and a third LED unit including a third light emitting stack. The second LED unit is disposed between the first LED unit and the third LED unit. Each of the first to third light emitting stacks includes a first conductivity type semiconductor layer and a second conductivity type semiconductor layer. The first conductivity type semiconductor layer and the second conductivity type semiconductor layer in each of the first to third light emitting stacks are stacked in a horizontal direction with respect to the upper surface of the display substrate.

Abstract: A pixel device includes a first light emitting device; a second light emitting device horizontally disposed adjacent to the first light emitting device; a first cover layer covering the first light emitting device and the second light emitting device; and connection layers disposed on the first cover layer and electrically connected to the first and second light emitting devices, wherein the first light emitting device includes a first light emitting structure, and the second light emitting device includes a second light emitting structure and a third light emitting structure, the first light emitting structure emitting light having a longer peak wavelength than peak wavelengths of light emitted from the second and third light emitting structures, the second and third light emitting structures emitting light having different peak wavelengths.

Abstract: A sterilization apparatus includes a main body, and a plurality of sterilization modules. The main body defines a sterilization space for sterilization of a sterilization target. The sterilization modules are disposed on a plurality of inner surfaces of the main body surrounding the sterilization space, respectively, and deliver germicidal light to the sterilization space. In addition, the sterilization module includes a support member and a plurality of light sources. A space between adjacent light sources disposed in some regions of the support member is different from a space between adjacent light sources disposed in the other regions of the support member.

Abstract: A display apparatus including a thin film transistor (TFT) substrate; a first LED sub-unit, a second LED sub-unit, and a third LED sub-unit; first, second, third, and fourth electrode pads disposed between the TFT substrate and the first LED sub-unit; and connectors connecting the first, second, and third LED sub-units to a respective one of the electrode pads, in which the first, second, and third sub-units are configured to be independently driven; light generated from the first LED sub-unit is emitted to the outside of the display apparatus by passing through the second and third LED sub-units; light generated from the second LED sub-unit is emitted to the outside of the display apparatus by passing through the third LED sub-unit; and at least one of the connectors includes a first portion electrically connecting a first surface of the first LED sub-unit to the second electrode pad.

Abstract: A light emitting device includes a short wavelength light emitting portion, a long wavelength light emitting portion, and a coupling layer combining the short wavelength emitting portion and the long wavelength light emitting portion. Each of the short wavelength light emitting portion and the long wavelength light emitting portion includes a first conductivity type semiconductor layer, an active layer, and a second conductivity type semiconductor layer. The active layer of the long wavelength light emitting portion contains more Indium (In) than the active layer of the short wavelength light emitting portion, and the short wavelength light emitting portion emits light of a shorter wavelength than that of light emitted from the long wavelength light emitting portion.

Abstract: A light emitting device including a cell area, a peripheral area surrounding the cell area, a light source disposed in the cell area and including at least one light emitting layer, a first light shielding layer disposed in the cell area and the peripheral area, a portion of the first light shielding layer overlapping with the light source, and a rough structure disposed in the cell area and overlapping with the light source.

Abstract: A display apparatus including a substrate, a first sub-pixel, a second sub-pixel, and a third sub-pixel disposed on the substrate and configured to emit red light, green light, and blue light, respectively, partition walls disposed between the first sub-pixel, the second sub-pixel, and the third sub-pixel, and configured to not transmit light, in which the first sub-pixel, the second sub-pixel, and the third sub-pixel include a first light emitting cell, a second light emitting cell, and a third light emitting cell, respectively, and a height of each of the first, second, and third light emitting cells is lower than a height of the partition walls, and a difference between the height of the partition walls and the height of each of the first, second, and third light emitting cells is less than 100 ?m.

Abstract: A light emitting diode pixel for a display includes a first subpixel including a first LED sub-unit, a second subpixel including a second LED sub-unit, a third subpixel including a third LED sub-unit, and a bonding layer overlapping the first, second, and third subpixels, in which each of the first, second, and third LED sub-units includes a first type of semiconductor layer and a second type of semiconductor layer, each of the first, second, and third LED sub-units is disposed on a different plane, and light generated from the second subpixel is configured to be emitted to an outside of the light emitting diode pixel by passing through a lesser number of LED sub-units than light generated from the first subpixel and emitted to the outside.

Abstract: A display device includes a substrate including an emission area and a non-emission area and in which a plurality of sub-pixels are defined, first electrodes disposed in the plurality of sub-pixels, respectively, a bank that is disposed in the non-emission area between the plurality of sub-pixels, and exposes the first electrode through an opening, a protrusion disposed in a second non-emission area of the non-emission area which is divided into a first non-emission area at a flat top surface of the bank and the second non-emission area at an inclined top surface of the bank, an organic layer disposed on the first electrodes, and a second electrode disposed on the organic layer.

Abstract: An electronic price indicator according to an embodiment includes a display displaying product information, an NFC module configured to communicate with a user terminal, a Bluetooth module configured to communicate with the user terminal, and a processor configured to control the display to display the product information received from the user terminal through the Bluetooth module. The processor is further configured to release a sleep mode when receiving an interrupt from the user terminal through the NFC module, and perform Bluetooth communication with the user terminal by initiating a scan for a predetermined period of time to receive an advertising signal from the user terminal.

Abstract: A light emitting device including a substrate having a light emitting area and a light shielding area, a light emitting structure disposed on the substrate and comprising at least one active layer, and a light shielding layer disposed on the substrate and defining the light shielding area, in which the light emitting area overlaps with the light emitting structure, the substrate has a rough surface overlapping at least a portion of the light emitting area, and a portion of the rough surface is covered with the light shielding layer, and light emitted from the at least one active layer is configured to be transmitted through the substrate.

Abstract: A light-emitting device includes a light generating portion including an active layer interposed between a first conductivity type layer and a second conductivity type layer. The active layer generates light. The light-emitting device further includes a light guide layer disposed on an optical path of light generated from the active layer. The light guide layer includes a textured structure on the optical path. The light guide layer can have a same conductivity type as the first conductivity type layer.

Abstract: A display apparatus including a plurality of display modules each including a module substrate and a plurality of light emitting devices mounted on the module substrate, and a support substrate on which the display modules are disposed and including conductive members, in which the module substrates includes a plurality of recesses depressed from at least one end surface of the module substrate, and connection electrodes formed in the recesses, and the light emitting devices are electrically connected to the conducive members of the support substrate through the connection electrodes.