Patent ID: 8222091
Filing Date: 2012-07-17
Classification: H01L

Abstract:
1. A method of making a device, comprising: forming a plurality of sacrificial material rails and first conductive rails located below the sacrificial material rails extending in a first direction; forming first insulating features between the plurality of sacrificial material rails; removing the sacrificial material rails; forming semiconductor rails over the first conductive rails between the first insulating features; and recessing the semiconductor rails to form rail shaped openings between the first insulating features; forming switching material rails in the rail shaped openings over the semiconductor rails; patterning the switching material rails, the semiconductor rails and the first insulating features to form a plurality of second rails extending in a second direction; and forming second insulating features between the plurality of second rails resulting in a structure comprising pillar-shaped non-volatile memory cells separated by insulating material of the first and second insulating features.