Patent ID: 6583476
Filing Date: 2003-06-24
Classification: H01L

Abstract:
A semiconductor structure formed in a semiconductor substrate of a first conductivity type for protecting against electrostatic discharge comprising:a first well of a second conductivity type formed in said substrate and having a first dopant concentration; a first region formed in said first well, said first region being of said second conductivity type and having a second dopant concentration greater than said first dopant concentration; an oxide region formed in and above a top surface of said semiconductor substrate, said oxide region encircling an active region in which one or more circuit elements are formed; and a field plate formed on said oxide region and encircling said active region, said field plate having a first end and a second end, wherein said first end of said field plate is coupled to a first power supply terminal and said second end of said field plate is coupled to said first region.