Patent ID: 7705367

Claim:
A gate-controlled silicon-controlled rectifier (SCR) transfer switch comprising: a substrate; a first doped region formed on the substrate; a second doped region formed on the substrate, a doping concentration of the second doped region being greater than a doping concentration of the first doped region; a third doped region formed on the first doped region, the third doped region and the first doped region being formed by opposite types of materials; a dielectric layer formed on the substrate, the first doped region, the second doped region, and the third doped region; and a gate formed on the dielectric layer, the gate comprising a P+ doped region and an N+ doped region, wherein the P+ doped region of the gate overlaps the first doped region while the N+ doped region of the gate does not overlap the first doped region, and the N+ doped region of the gate overlaps a portion of the substrate.