Patent ID: 8878329
Filing Date: 2014-11-04
Classification: H01L

Abstract:
1. A high voltage device having Schottky diode comprising: a semiconductor substrate; at least a dielectric region formed in the semiconductor substrate; a Schottky diode formed on the semiconductor substrate; at least a salicide block (SAB) positioned on the semiconductor substrate; at least a first doped region having a first conductive type formed in the semiconductor substrate, the first doped region being physically non-contacting with the Schottky diode; a well region having a second conductive type formed in the semiconductor substrate and the dielectric region, the Schottky diode and the first doped region are formed in the well region; a second doped region having the second conductive type formed adjacent to the dielectric region and on a side opposite to the Schottky diode in the well region, and the second doped region is a heavily doped region; and a third doped region having the first conductivity formed under the dielectric region in the semiconductor substrate, the third doped region being spaced apart from the first doped region.