Patent ID: 9484356
Filing Date: 2016-11-01
CPC Classification: H01L

Claim Text:
1. A semiconductor structure, comprising: a substrate; a stack of alternate conductive layers and insulating layers formed on the substrate; two openings penetrating through the stack, wherein the stack comprises an extending portion laterally extending from a portion of the stack that is positioned between the two openings and beyond the two openings; an oxide layer formed on sidewalls of the two openings; a conductor filled into the two openings, the conductor being separated from the sidewalls of the two openings by only the oxide layer, wherein the conductor filled into the two openings is for a string select structure or a ground select structure; and a tunneling layer-trapping layer-blocking layer structure conformally covering the extending portion of the stack, wherein a dielectric for the string select structure or the ground select structure is only the oxide layer and is non-overlapping with the tunneling layer-trapping layer-blocking layer structure for a memory cell.