Abstract: An LED (light emitting diode) includes a base, two spaced electrodes and a thermal conductivity layer. The base has a top surface. The two electrodes and the thermal conductivity layer are located on the top surface of the base. The thermal conductivity layer is attached to the top surface and located beside and between the electrodes. The two electrodes are electrically insulated from each other, and electrically insulated from the thermal conductivity layer. A light emitting chip is electrically connected to the two electrodes. The electrodes and the thermal conductivity layer are on different levels.

Abstract: A lamp assembly comprises a lamp body, a bracket, and a securing member. The lamp body comprises a leg. The lamp body is arranged on the bracket. The securing member is mounted on the bracket and capable of moving relative to the bracket to press or away from the leg of the lamp body to achieve an assembly of the lamp body to the bracket or a disassembly of the lamp body from the bracket. The lamp body includes a plurality of light emitting diodes as a light source.

Abstract: An exemplary method for manufacturing a circuit board includes, firstly, providing a substrate made of heat conductive, electrically insulative material. Then a copper layer is formed on the substrate. After that, nickel is plated on the copper layer to form a nickel layer. Finally, gold is and plated on the nickel layer to form a gold layer.