A light source cooling body (100), a light source assembly, a luminaire and a method to manufacture a light source cooling body or a light source assembly are provided. The light source cooling body comprises a homogeneous body (104) made of a thermally conductive material. The homogenous body comprises an open space that comprises a wick structure, a condenser (112) and an evaporator (116). Near the evaporator the light source cooling body has an interface area (102) to thermally couple with a light source and to receive heat from the light source. The condenser is arranged away from the interface area. A portion 114 of the open space is tubular shaped. The open space may hold a cooling liquid partially in the gaseous phase and partially in the liquid phase and the wick structure is configured to transport the cooling material in the liquid phase towards the evaporator.

The present disclosure is to provide an optoelectronic device. The optoelectronic device comprises a heat dispersion substrate; a first connecting layer on the heat dispersion substrate; a diode stack structure comprising a protection layer and a second connecting layer on the protection layer, wherein the protection layer is on the first connecting layer; a light-emitting structure on the diode stack structure, wherein the light-emitting structure comprises a first conductivity type semiconductor layer, a second conductivity type semiconductor layer, and an active layer between the first conductivity type semiconductor layer and the second conductivity type semiconductor layer; and a first electrode electrically connected to the diode stack structure and the light-emitting structure.

A light emitting diode package for a directional display may comprise light emitting diodes and a protection diode. The protection diode may be arranged in a well that is at a different location to the well that the light emitting diodes are arranged. The directional display may include a waveguide. The waveguide may include light extraction features arranged to direct light from an array of light sources by total internal reflection to an array of viewing windows and a reflector arranged to direct light from the waveguide by transmission through extraction features of the waveguide to the same array of viewing windows. The brightness of the directional display can be increased. An efficient and bright directional display system can be achieved. Efficient light baffling for light escaping from the edge of the waveguide is achieved through light deflecting extraction films.

A light emitting device includes a heat sinking substrate, an electrically insulating layer, a circuit pattern layer, and at least one light emitting diode (LED) chip. The electrically insulating layer is partially formed on the heat sinking substrate so as to expose a portion of the heat sinking substrate. The circuit pattern layer is formed on the electrically insulating layer. The LED chip is electrically connected to the circuit pattern layer, and is indirectly and non-electrically mounted to the portion of the heat sinking substrate exposed from the electrically insulating layer and the circuit pattern layer. A method of making the light emitting device is also provided.

A high voltage LED flip chip includes two or more regions; a Mesa-platform, the Mesa-platform in each region has a first groove; a first electrode located on the Mesa-platform, an area between the first electrodes in two adjacent regions forms a second groove; a first insulation layer covering the Mesa-platforms and the first electrodes, the first insulation layer fills the second groove and partially fills the first groove, and a part of the first groove which is not filled forms a third groove; a fourth groove formed in the first insulation layer, the fourth groove exposes a surface of the first electrode; and an interconnection electrode, the interconnection electrode comprises a first portion connecting the first semiconductor layer through the third groove in a particular region with the first electrode through the fourth groove in another region adjacent to the particular region. The LED formed has improved performance.

An optoelectronic semiconductor component includes an optoelectronic thin-film chip; and a thermally conductive and electrically insulating element, wherein both the thin-film chip and the element are embedded in a molded body, a top surface of the thin-film chip and a bottom surface of the element are not covered by the molded body, the top surface of the thin-film chip is approximately flush with a top surface of the molded body, the bottom surface of the element is approximately flush with a bottom surface of the molded body, the molded body includes a first embedded conductor structure and a second embedded conductor structure, and the first conductor structure and the second conductor structure extends to the bottom surface of the molded body.

A structured substrate configured for epitaxial growth of a semiconductor layer thereon is provided. Structures can be formed on a side of the structured substrate opposite that of the growth surface for the semiconductor layer. The structures can include cavities and/or pillars, which can be patterned, randomly distributed, and/or the like. The structures can be configured to modify one or more properties of the substrate material such that growth of a higher quality semiconductor layer can be obtained.

A method of manufacturing a light emitting device includes: providing an undivided base having a first main surface and a second main surface on the opposite side from the first main surface, the undivided base having conductive patterns disposed on the first main surface and conductive patterns disposed on the second main surface; mounting a plurality of light emitting elements on the conductive patterns on the first main surface; forming a light reflecting member that integrally covers side surfaces of the light emitting elements and the first main surface of the undivided base; and, after the forming of the light reflecting member, forming at least one groove on the second main surface of the undivided base at a position corresponding to a space between the light emitting elements so that the groove reaches the first main surface and the undivided base is divided into a plurality of base members.

The present invention relates to a high heat-dissipation LED substrate and a high heat-dissipation LED package using the substrate. The substrate comprises an insulating plate, a upper copper-cladding layer and a lower copper-cladding layer respectively provided on the upper and lower sides of the insulating plate; both the upper copper-cladding layer and the lower copper-cladding layer comprise heat dissipation areas and circuit areas mutually isolated; the insulating plate is provided with heat-conducting copper posts connected to the upper and lower heat dissipation areas and electric copper posts connected to the upper and lower circuit areas; the cross section of the copper post is round, 8-shaped or quincuncial; the circuit area surface of the upper copper-cladding layer is treated by roughening, and the heat dissipation area surface of the lower copper-cladding layer is provided convex-concave structures.

Provided is an anisotropic conductive adhesive in which excellent optical characteristics and heat dissipation characteristics are obtainable. The anisotropic conductive adhesive contains conductive particles each comprising a metal layer having Ag as a primary constituent formed on an outermost surface of a resin particle, solder particles having a smaller average particle diameter than the conductive particles, reflective insulating particles having a smaller average particle diameter than the solder particles and a binder into which the conductive particles solder particles and reflective insulating particles are dispersed. The conductive particles and the reflective insulating particles efficiently reflect light, thereby improving light-extraction efficiency of an LED mounting body. Additionally, inter-terminal solder bonding of the solder particles during compression bonding increases contact area between opposing terminals, thereby enabling achievement of high heat dissipation characteristics.