Patent ID: 9029952
Filing Date: 2015-05-12
Classification: H01L

Abstract:
1. A semiconductor structure, comprising: a substrate; a well having a first conductive type and a well having a second conductive type being respectively formed in the substrate; a body region formed in the well having the second conductive type; a first doped region and a second doped region being respectively formed in the well having the first conductive type and the body region, wherein the second doped region and the first doped region has same polarities, and a dopant concentration of the second doped region is higher than a dopant concentration of the first doped region; a third doped region formed in the well having the second conductive type, and located between the first doped region and the second doped region, the third doped region and the first doped region have reverse polarities; and a first field plate formed on a surface region of the well having the second conductive type between the second doped region and the third doped region, and the first field plate laterally crossovers a portion of surface region of the body region and the surface region of the well having the second conductive type, and the body region is an emitter region having a first conductive type different from the second conductive type.