Abstract: A unit pixel includes a transparent substrate, a plurality of light emitting devices arranged on the transparent substrate, and an optical layer disposed between the light emitting devices and the transparent substrate and transmitting light emitted from the light emitting devices. The transparent substrate has a concavo-convex pattern on a surface facing the light emitting devices.

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 device including a base substrate having a front surface and a rear surface, and including a first recess portion recessed from the front surface, a plurality of outer electrodes disposed on the base substrate, a light emitting device disposed in the first recess portion and configured to emit light in a direction away from the base substrate, the light emitting device including a light emitting structure electrically connected to the outer electrodes.

Abstract: A light emitting device including a first light emitter, a second light emitter, and a third light emitter, each including a first conductivity type semiconductor layer and a second conductivity type semiconductor layer. An adhesive layer includes a first adhesive portion disposed between the first light emitter, and the second light emitter, and a second adhesive portion disposed between the second light emitter and the third light emitter, in which the second light emitter is disposed between the first light emitter and the third light emitter, and the first adhesive portion and the second adhesive portion are optically transmitting and connect adjacent light emitters.

Abstract: A light emitting device includes a substrate; a pattern of a plurality of protrusions protruding from the substrate; a first semiconductor layer provided on the substrate; an active layer provided on the first semiconductor layer; and a second semiconductor layer provided on the active layer, in which each of the protrusions includes a first layer formed integrally with the substrate and protruding from an upper surface of the base substrate; and a second layer provided on the first layer and formed of a material different from that of the first layer.

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 source module for plant cultivation includes a main light source, an auxiliary light source unit, and a controller. The main light source unit emits background light which is visible light for growth of a plant. The auxiliary light source unit emits auxiliary light including UVB, UVC, or both to increase the content of phytochemicals in the plant. The controller controls operation of the main light source unit and the auxiliary light source unit based on a control signal.

Abstract: A light emitting device including first, second, and third light emitting stacks each including first and second conductivity type semiconductor layers, a first lower contact electrode in ohmic contact with the first light emitting stack, and second and third lower contact electrodes respectively in ohmic contact with the second conductivity type semiconductor layers of the second and third light emitting stacks, in which the first lower contact electrode is disposed between the first and second light emitting stacks, the second and third lower contact electrodes are disposed between the second and third light emitting stacks, the first, second, and third lower contact electrodes include transparent conductive oxide layers, and a thickness of the second lower contact electrode or the third lower contact electrode is greater than a thickness of the first lower contact electrode.

Abstract: A light source module includes at least one substrate, at least one main light source and at least one auxiliary light source. The at least one main light source and the at least one auxiliary light source are disposed on the at least one substrate. The main light source comprises a first main light emitter configured to emit a first main light having a first number of peak wavelengths and a second main light emitter configured to emit a second main light having a second number of peak wavelengths. In addition, the auxiliary light source is configured to emit a third auxiliary light having a third number of peak wavelengths. The first number of peak wavelengths can be different from the second number of peak wavelengths. A peak wavelength of the second main light can be longer than all of the peak wavelengths of the first main light.

Abstract: A light emitting device includes a substrate, a plurality of light emitting diodes, a window, and a reflector. The substrate has a first region and a second region. The plurality of light emitting diodes are disposed on the first region of the substrate. The window has a dome shape and is disposed to cover the first region. The window is configured to control a traveling path of light emitted from the plurality of light emitting diodes. The reflector is configured to support the window and reflect the light emitted from the plurality of light emitting diodes. The reflector has an opening that exposes the plurality of light emitting diodes disposed on the substrate. A distance between two adjacent light emitting diodes of the plurality of light emitting diodes can be 500 micrometers or less.

Abstract: A light emitting device includes a substrate including a roughened surface; a light emitter disposed on the substrate, which includes a first conductivity layer; and a mesa disposed on a partial region of the first conductivity layer. An ohmic electrode can be disposed on the mesa; and a contact electrode can be disposed on the first conductivity layer. The light emitting device further includes a first reflection layer; a first pad electrode and a second pad electrode; and a second reflection layer. The first insulating reflection layer covers at least a portion of the light emitter emitting structure, the ohmic electrode and the contact electrode. The second reflection layer is disposed on an opposite side of the substrate.

Abstract: A display apparatus including a display substrate, a plurality of light emitting devices disposed on the display substrate, at least one of the light emitting devices including a first LED sub-unit, a second LED sub-unit disposed on the first LED sub-unit, and a third LED sub-unit disposed on the second LED sub-unit, and a molding layer covering side surfaces of the light emitting devices and exposing upper surfaces thereof, in which the third LED sub-unit is disposed closer to an upper surface of the light emitting device than the first LED sub-unit.

Abstract: A light emitting device includes a first light emitting part including a first n-type semiconductor layer, and a first mesa structure including a first active layer, a first p-type semiconductor layer, and a first transparent electrode vertically stacked one over another and exposing a portion of a first surface of the first n-type semiconductor layer, a second light emitting part spaced apart from the first mesa structure, and including a second n-type semiconductor layer, a second active layer, a second p-type semiconductor layer, and a second transparent electrode and exposing a portion of a first surface of the second n-type semiconductor layer, and a first bonding layer on which the first and second light emitting parts are disposed and electrically coupling the first n-type semiconductor layer and the second n-type semiconductor layer to each other.

Abstract: A light emitting device including a first LED sub-unit, a second LED sub-unit disposed under the first LED sub-unit, a third LED sub-unit disposed under the second LED sub-unit, a first ohmic electrode interposed between the first LED sub-unit and the second LED sub-unit, and in ohmic contact with the first LED sub-unit, a second ohmic electrode interposed between the second LED sub-unit and the third LED sub-unit, and in ohmic contact with the second LED sub-unit, a third ohmic electrode interposed between the second ohmic electrode and the third LED sub-unit, and in ohmic contact the third LED sub-unit, a plurality of electrode pads disposed on the first LED sub-unit, in which at least one of the first ohmic electrode, the second ohmic electrode, and the third ohmic electrode has a patterned structure.

Abstract: A group III-V light-emitting diode is provided. The light-emitting diode includes a light generating portion including an active layer interposed between a first conductivity type semiconductor layer and a second conductivity type semiconductor layer. The active layer generates light. The light-emitting diode further includes an optical trap disposed on an optical path of light generated from the active layer. The optical trap includes a light absorption layer interposed between light guide layers. The light-emitting diode further includes a side reflector disposed on a side surface of the optical trap.

Abstract: A light emitting stacked structure including a first epitaxial stack including a first n-type semiconductor layer, a first p-type semiconductor layer, and a first active layer disposed therebetween, a second epitaxial stack disposed on the first epitaxial stack and including a second n-type semiconductor layer, a second p-type semiconductor layer, and a second active layer disposed therebetween, a third epitaxial stack disposed on the second epitaxial layer and including a third n-type semiconductor layer, a third p-type semiconductor layer, and a third active layer disposed therebetween, and a shared electrode disposed between two adjacent epitaxial stacks facing each other, in which two semiconductor layers of the two adjacent epitaxial stacks with the shared electrode therebetween have a same polarity.

Abstract: A light emitting device module including a printed circuit board, upper and lower electrodes disposed on opposing surfaces of the printed circuit board, light emitting devices configured to emit light in a direction away from the printed circuit board, and a molding layer surrounding the light emitting devices, in which each light emitting device includes a light emitting structure, a substrate disposed on the light emitting structure, and bump electrodes disposed between the light emitting structure and the printed circuit board, the molding layer covers side surfaces of the substrates, a number of the lower electrodes is less than a number of the bump electrodes of the plurality of light emitting devices, and each of the light emitting devices is configured to be driven independently.

Abstract: A light emitting device including a first LED sub-unit, a second LED sub-unit disposed under the first LED sub-unit, a third LED sub-unit disposed under the second LED sub-unit, a first ohmic electrode interposed between the first LED sub-unit and the second LED sub-unit, and in ohmic contact with the first LED sub-unit, a second ohmic electrode interposed between the second LED sub-unit and the third LED sub-unit, and in ohmic contact with the second LED sub-unit, a third ohmic electrode interposed between the second ohmic electrode and the third LED sub-unit, and in ohmic contact the third LED sub-unit, a plurality of electrode pads disposed on the first LED sub-unit, in which at least one of the first ohmic electrode, the second ohmic electrode, and the third ohmic electrode has a patterned structure.

Abstract: A light device for plant cultivation is disclosed. The light device for plant cultivation includes a light source unit including multiple first light source modules and multiple second light source modules. The multiple first light source modules and the multiple second light source modules may emit light for plant cultivation toward a plant. The multiple first light source modules are arranged at constant intervals. The multiple second light source modules are disposed at least between a pair of first light source modules disposed at both ends of the light source unit.