Semiconductor devices

Abstract

A semiconductor device includes a substrate, a plurality of semiconductor patterns extending in a first horizontal direction, above the substrate, and spaced apart from one another in a second horizontal direction and a vertical direction, which intersect the first horizontal direction, the plurality of semiconductor patterns each including a first end and a second end, a bit line connected to the first ends of the plurality of semiconductor patterns and extending in the vertical direction, a plurality of word lines extending in the second horizontal direction, above the plurality of semiconductor patterns, and a lower separation structure partially passing through the substrate in the vertical direction and located between the substrate and the bit line, the lower separation structure extending above the substrate to cover at least one semiconductor pattern.

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