High reliability HV-CMOS transistors in standard CMOS technology

A novel high-reliability HV-CMOS (High Voltage CMOS) compatible with 0.6/spl mu/m rules standard Bulk-Silicon (BS) CMOS process was proposed. The reliability of the HV-CMOS is greatly improved by adding the p-well to HV-PMOS (High Voltage PMOS) for etching the unwanted thick-gate-oxide film and that to HV-DNMOS (High Voltage Double-Diffusion NMOS) for preventing punch-through. The breakdown voltage of the presented HV-CMOS exceeds 100 V, which can be used in power driver ICs, etc.