Abstract: Exemplary embodiments of the present invention provide light-emitting diodes having a distributed Bragg reflector. A light-emitting diode (LED) according to an exemplary embodiment includes a light-emitting structure arranged on a first surface of a substrate, the light-emitting structure including a first conductivity-type semiconductor layer, a second conductivity-type semiconductor layer, and an active layer interposed between the first conductivity-type semiconductor layer and the second conductivity-type semiconductor layer. A first distributed Bragg reflector is arranged on a second surface of the substrate opposite to the first surface, the first distributed Bragg reflector to reflect light emitted from the light-emitting structure. The first distributed Bragg reflector has a reflectivity of at least 90% with respect to light of a first wavelength in a blue wavelength range, light of a second wavelength in a green wavelength range, and light of a third wavelength in a red wavelength range.

Abstract: Exemplary embodiments of the present invention relate to light emitting diodes. A light emitting diode according to an exemplary embodiment of the present invention includes a substrate having a first side edge and a second side edge, and a light emitting structure arranged on the substrate. The light emitting structure includes a first conductivity-type semiconductor layer, an active layer, and a second conductivity-type semiconductor layer. A transparent electrode layer including a concave portion and a convex portion is arranged on the second conductivity-type semiconductor layer. A first electrode pad contacts an upper surface of the first conductivity-type semiconductor layer and is located near a center of the first side edge. Two second electrode pads are located near opposite distal ends of the second side edge to supply electric current to the second conductivity-type semiconductor layer.

Abstract: Exemplary embodiments of the present invention provide light-emitting diodes having a distributed Bragg reflector. A light-emitting diode (LED) according to an exemplary embodiment includes a light-emitting structure arranged on a first surface of a substrate, the light-emitting structure including a first conductivity-type semiconductor layer, a second conductivity-type semiconductor layer, and an active layer interposed between the first conductivity-type semiconductor layer and the second conductivity-type semiconductor layer. A first distributed Bragg reflector is arranged on a second surface of the substrate opposite to the first surface, the first distributed Bragg reflector to reflect light emitted from the light-emitting structure. The first distributed Bragg reflector has a reflectivity of at least 90% with respect to light of a first wavelength in a blue wavelength range, light of a second wavelength in a green wavelength range, and light of a third wavelength in a red wavelength range.

Abstract: An exemplary embodiment of the present invention discloses a light emitting diode including a lower contact layer having a first edge, a second edge opposite to the first edge, a third edge connecting the first edge to the second edge, and a fourth edge opposite to the third edge, a mesa structure arranged on the lower contact layer, the mesa structure including an active layer and an upper contact layer, a first electrode pad arranged on the lower contact layer, a second electrode pad arranged on the mesa structure, a first lower extension and a second lower extension extending from the first electrode pad towards the second edge, distal ends of the first lower extension and the second lower extension being farther away from each other than front ends thereof contacting the first electrode pad, and a first upper extension, a second upper extension, and a third upper extension extending from the second electrode pad.

Abstract: The present invention relates to a SMIS system for managing systematically an implementation status of an aviation safety regulation, and more particularly, to a SMIS system for analyzing, complementing and assessing automatically an implementation status of an aviation safety regulation in own country on the basis of standards and recommended practices prescribed in the annexes for 18 fields published and managed by the International Civil Aviation.

Abstract: A phosphor paste composition, which includes phosphate ester as a dispersant to increase the loading amount of a phosphor without greatly increasing the viscosity, thus improving luminance and maintaining excellent workability. In addition, a display using the phosphor paste composition is provided. The phosphor paste of the current invention is obtained by mixing a binder solution composed of a solvent and a binder with phosphate ester serving as a dispersant and a phosphor, in which the phosphate ester used as the dispersant is phosphate ester of a block copolymer of nonylphenol and polyoxyethyleneglycol or phosphate ester having acryl as a main chain. A preferred phosphor paste is composed of 0.1 to 3 wt % of the phosphate ester serving as a dispersant, 40 to 70 wt % of the phosphor, and the balance being the binder solution.

Abstract: Disclosed herein is a phosphor paste composition, which includes a phosphor, a dispersant, and a binder solution composed of a solvent and an organic binder, in which the dispersant includes iso-octylphenol ethoxylated phosphoric acid, phosphate ester of a block copolymer of nonylphenol and polyoxyethyleneglycol, or phosphate ester containing an acryl backbone. In addition, a display device using the phosphor paste composition is provided. The phosphor paste composition of this invention can be applied to various phosphor screens for display devices and to display devices, thus increasing high physical properties, including luminance, and greatly improving workability.