Light-emitting diode for large current driving

摘要

A light-emitting diode for large current driving ( 1 ) is provided according to the invention. It comprises a metal substrate ( 4 ) having an upper surface and provided with an electrically insulated distribution circuit ( 4 a) formed on the upper surface. A metal base ( 3 ) is directly attached to the metal substrate ( 4 ) and provided with an LED chip ( 2 ) mounted thereon. A gold wire ( 5 ) is arranged to connect the distribution circuit to the LED chip. A resin lens ( 6 ) is arranged to cover part of the metal base over the LED chip including at least the gold wire ( 5 ). Therefore, the metal base with the LED chip mounted thereon and the metal substrate can contact the atmosphere in a large area to dissipate heat efficiently. While keeping this construction, the LED chip can be wired with a small amount of heat through the distribution circuit separated from the metal substrate.