Patent ID: 7002222

Claim:
A semiconductor device comprising: a plurality of wells of a first conduction type, each well formed in a substrate and containing a first set of active components and a first set of contacts associated with the first set of active components; and a plurality of wells of a second conduction type, each well formed in a substrate and containing a second set of active components and a second set of contacts associated with the active components, wherein the wells of the first conduction type share a mutually adjoining boundary with the wells of the second conduction type, the mutually adjoining boundary disposed within a border region, wherein a contamination zone due to implantation scattering during well implantation lies within the border region; wherein the first set of contacts and second set of contacts lie in the border region near the mutually adjoining boundary, and wherein the active components lie further away from the mutually adjoining boundary than do the first and second set of contacts.