Abstract:
A light-emitting diode (LED) apparatus includes an epitaxial layer and a current spreading layer. The epitaxial layer has a first semiconductor layer, an active layer and a second semiconductor layer. The current spreading layer is disposed on the first semiconductor layer of the epitaxial layer and has a micro/nano roughing structure layer and a transparent conductive layer. The micro/nano roughing structure layer has a plurality of hollow parts, and the transparent conductive layer covers a surface of the micro/nano roughing structure layer and is filled within the hollow parts. In addition, a manufacturing method of the LED apparatus and a current spreading layer with a micro/nano structure are also disclosed.
Abstract:
A light emitting diode apparatus includes a heat dissipating substrate, a composite layer, an epitaxial layer, a first electrode and a second electrode. The composite layer includes a reflective layer, a transparent conductive layer and a patterned insulating thermoconductive layer, which is disposed between the reflective layer and the transparent conductive layer. The composite layer is disposed between the heat dissipating substrate and the epitaxial layer and allows currents to concentrate to the reflective layer or the transparent conductive layer and then to be diffused evenly through the transparent conductive layer. The epitaxial layer includes a first semiconductor layer electrically connected with the first electrode, an active layer and a second semiconductor layer electrically connected with the second electrode.
Abstract:
An illumination apparatus includes a first light-emitting device, a second light-emitting device, and a third light-emitting device. The light emitted from the third light-emitting device is selectively mixed with the light emitted from the first light-emitting device or the second light-emitting device to form a white light having a chromaticity coordinate point substantially located on a Black Body Locus. A color of the light emitted from the third light-emitting device is determined by linear relationships between chromaticity coordinate points corresponding to wavelengths of the lights emitted form the first light-emitting device and the second light-emitting device and corresponding to a color temperature of the white light. A method for generating a white light is also disclosed herein.
Abstract:
A light source module is provided. The light source module includes a full wave rectifier, a constant current output integrated circuit (IC) and at least one high operating voltage light emitting diode (HVLED) die coupled between the constant current output IC and a ground. The full wave rectifier generates a rectified signal according to an alternating current (AC) power. The constant current output IC outputs a constant current signal according to the rectified signal. A brightness of the HVLED die is determined by the constant current signal.
Abstract:
A light-emitting diode (LED) apparatus includes an epitaxial multilayer, a micro/nano rugged layer and an anti-reflection layer. The epitaxial multilayer has a first semiconductor layer, an active layer and a second semiconductor layer in sequence. The micro/nano rugged layer is disposed on the first semiconductor layer of the epitaxial multilayer. The anti-reflection layer is disposed on the micro/nano rugged layer. In addition, a manufacturing method of the LED apparatus is also disclosed.
Abstract:
An electroluminescent module includes a module substrate, a thermal-conducting carrier substrate and a light-emitting element. The module substrate has an opening, a first surface and a first patterned electrode disposed on the first surface. The thermal-conducting carrier substrate has a carrying element and a second patterned electrode disposed on the carrying element. The carrying element is disposed opposite to the first surface of the module substrate, and the second patterned electrode is disposed facing to the first patterned electrode and electrically connected to the first patterned electrode. The light-emitting element is located at the opening and disposed on the thermal-conducting carrier substrate. The light-emitting element has a first electrode and a second electrode, both of which are respectively electrically connected to the corresponding portions of the second patterned electrode of the thermal-conducting carrier substrate.
Abstract:
An electroluminescent device includes a conduction substrate, a reflection layer, a patterned transparent conduction layer, at least one light emitting diode (LED) element, a first contact electrode and a second contact electrode. The reflection layer is disposed on the conduction substrate, and the patterned transparent conduction layer is formed on the reflection layer. The LED element is formed on the patterned transparent conduction layer, and the LED element includes a first semiconductor layer, a light emitting layer and a second semiconductor layer in sequence. The second semiconductor layer is disposed on the patterned transparent conduction layer and the reflection layer. The first contact electrode is disposed at one side of the first semiconductor layer, and the second contact electrode is disposed at one side of the conduction substrate.
Abstract:
An illuminating device includes a substrate, an illuminating element, at least one barricade and at least one cover layer. The illuminating element is disposed on the substrate. The barricade is protruded from a surface of the substrate and disposed around the illuminating element continuously or discontinuously to form a first accommodating area. The cover layer is disposed in the first accommodating area for covering the illuminating element.
Abstract:
A highly directional light source device, more specifically, a light emitting element electrically connected on a substrate to produce light, and one interior having a photon recycler with a reflective surface, covered and set on one side of this substrate, and an opening set in the center of the top of the cover which corresponds with the light emitting element, thereby allowing the light from the light emitting element to be directly emitted out the opening, and then to be reflected back to the light emitting element through the reflective surface of the photon recycler, and after light is reflected or refracted according to the structure of the light emitting element, again through the opening the light is emitted onto the photon recycler, thereby achieving increased Étendue of the highly directional light source device and achieving the goal of effective light emission.
Abstract:
A LED light source in a single package for raising the color-rendering index is provided. The LED light source comprises a substrate, at least one covering layer, a primary light source, and a secondary light source. The primary and the secondary light sources are formed on the substrate and coated with the at least one covering layer to provide a first output light and a second output light, respectively. The total output light is a mixed color of the first output light and the second output light.