Patent ID: 6268633
Filing Date: 2001-07-31
Classification: H01L

Abstract:
A structure of electronic devices integrated in a semiconductor substrate having a first type of conductivity, the structure comprising a high voltage transistor and a low voltage transistor, each having a corresponding gate region, wherein said high voltage transistor has a drain region lightly doped with a second type of conductivity, and said low voltage transistor has respective drain and source regions with the second type of conductivity, each including a lightly doped portion adjacent to the gate region of said low voltage transistor and a second portion which is more heavily doped, wherein said second portion comprises a silicide layer and the high voltage transistor includes a source region and first and second spacers positioned on opposite sides of the gate region, the drain and source regions of the high voltage transistor each comprising a contact region that is laterally spaced from the first and second spacers and is more heavily doped than a remainder of said drain and source regions of the high voltage transistor.