Abstract:
A light emitting device including a light emitting structure disposed on one surface of a substrate and a transflective portion disposed on the other surface of the substrate. The transflective portion and the substrate have different indexes of refraction from one another.
Abstract:
A light emitting device having a wide beam angle and a method of fabricating the same. The light emitting device includes a light emitting structure, a substrate disposed on the light emitting structure, and an anti-reflection layer covering side surfaces of the light emitting structure and the substrate, and at least a portion of an upper surface of the substrate is exposed.
Abstract:
A UV light emitting diode includes a substrate having a plurality of holes surrounded by a flat surface, a first conductivity type semiconductor layer disposed on the substrate, a second conductivity type semiconductor layer disposed on the first conductivity type semiconductor layer, an active layer disposed between the first conductivity type semiconductor layer and the second conductivity type semiconductor layer. A distance from the flat surface to the active layer is smaller than a distance from bottom surfaces of the plurality of holes to the active layer. The flat surface is in contact with the first conductivity type semiconductor layer.
Abstract:
A light-emitting diode includes: a gallium nitride substrate; a first semiconductor layer disposed thereon; a mesa including a second semiconductor layer disposed on the first semiconductor layer and an intervening active layer; a first contact layer including an outer contact part in contact with the first semiconductor layer near an edge of the substrate and an inner contact part in contact with the first semiconductor layer within a region encompassed by the outer contact part; a second contact layer disposed on the mesa in contact with the second semiconductor layer; an upper insulation layer having first and second opening parts overlapping the first and second contact layers; and first and second electrode pads electrically connected to the first and second contact layers through the first and second opening parts, wherein the LED can be driven at 150 A/cm2 or more and has a maximum junction temperature of 180° C. or more.
Abstract:
A light emitting device including a light emitting structure disposed on one surface of a substrate and a transflective portion disposed on the other surface of the substrate. The transflective portion and the substrate have different indexes of refraction from one another.