US Patent 7332378 Integrated circuit memory system with dummy active region

An integrated circuit memory system including a substrate formed with equidistant spaced shallow trench isolation regions. Forming active regions and dummy active regions within the substrate between the equidistant spaced shallow trench isolation regions. Forming sources and drains within the active regions. Providing wordlines and source lines extending in a first direction and bitlines extending in a second direction. Forming contact regions over the dummy active regions for strapping the wordlines and the source lines to the bitlines.