Patent ID: 8815676
Filing Date: 2014-08-26
Classification: H01L

Abstract:
1. A method of fabricating a nonvolatile memory device, comprising: forming a stack including first layers and second layers stacked in an alternating sequence, on a substrate, the first layers and the second layers comprising different materials; forming an opening penetrating through the stack; horizontally etching sidewalls of the second layers exposed by the opening to form an expanded opening; forming an insulating protective pattern covering an inner sidewall of the expanded opening; forming a semiconductor pattern in the expanded opening on the insulating protective pattern, the insulating protective pattern extending between the stack and the semiconductor pattern; forming a trench penetrating through the stack, the trench being spaced apart from the extended opening; removing the second layers exposed by the trench to form recess regions between the first layers, the recess regions exposing portions of the insulating protective pattern; and forming conductive patterns in the respective recess regions.