Integrated circuit device

Abstract

An integrated circuit device includes a substrate including a cell array region, a core region, and an interface region between the cell array region and the core region, an interface device isolation film arranged in the interface region and defining the cell array region, a plurality of dummy active regions spaced apart from each other in the interface region, each dummy active region being surrounded by the interface device isolation film, and a plurality of bit lines extending from the cell array region to the interface region, wherein each of the plurality of bit lines includes a bit line extension located in the interface region, and the bit line extension extends onto a selected one of the plurality of dummy active regions.

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