Patent ID: 7989874
Filing Date: 2011-08-02
Classification: H01L

Abstract:
1. A nonvolatile memory device, comprising: a plurality of cell strings arranged in a cell region of a semiconductor substrate, wherein the cell string has a plurality of cell transistors, each cell transistor comprising a gate of a stack type formed on the substrate and a source/drain formed in the substrate at both sides of the gate; a first interlayer insulating film formed over the substrate where the cell transistors are formed, wherein the interlayer insulating film covers the gate of a stack type; a second interlayer insulating film formed over the first interlayer insulating film; a plurality of interconnects formed through the first and second interlayer insulating film, wherein the interconnects are electrically connected to one of the source/drain of the cell transistors; a plurality of conductive patterns formed in the first and second interlayer insulating films, wherein the conductive patterns do not contact the source/drain of the cell transistors, wherein one of the conductive pattern is disposed to overlap another source/drain, and wherein a portion of the first interlayer insulating film is interposed between the one of the conductive patterns and the another source/drain to isolate the one of the conductive patterns from the another source/drain.