Patent ID: 8841692

Claim:
A lead frame comprising: on a same plane, a pad part including an LED chip mounting upper surface on which an LED chip is to be mounted; and a lead part having a thickness that is the same as that of the pad part and including an electric connection area in which an electric connection with the LED chip is made, the electric connection area being in plane with the LED chip mounting upper surface, wherein an area of the mounting upper surface of the pad part is less than an area of a radiating lower surface opposite to the mounting upper surface, the pad part is formed of a first upper structure including the mounting upper surface and a first lower structure integrated with the first upper structure and including the radiating lower surface, whole side surfaces of the first upper structure are provided with tapered parts, which spread in a direction from the mounting upper surface toward the radiating lower surface and hold a resin filled during molding, the resin having the thickness of the lead part, whole side surfaces of the first lower structure are provided with tapered parts, which spread in a direction from the radiating lower surface toward the mounting upper surface and hold the resin filled during molding, and shapes of the whole side surfaces of the first upper structure and shapes of the whole side surfaces of the first lower structure are curved.