Patent ID: 9373664
Filing Date: 2016-06-21
CPC Classification: H01L

Claim Text:
1. A variable resistance memory device, comprising: a plurality of first conductive structures extending in a first direction; a plurality of second conductive structures over the first conductive structures, the second conductive structures extending in a second direction crossing the first direction; and a plurality of memory cells, each including a selection element and a variable resistance element sequentially stacked, the memory cells being formed at intersections at which the first conductive structures and the second conductive structures overlap each other, wherein an upper surface of each of the first conductive structures has a width in the second direction less than a width in the second direction of a bottom surface of each of the selection elements, and each of the first conductive structure includes a plurality of protrusions in the first direction, the selection elements each being on a respective one of the plurality of protrusions.