Abstract:
A semiconductor memory device and a method of fabricating the same. The device includes a plurality of gates vertically stacked on a top surface of a substrate with an epitaxial layer formed in the substrate, a vertical channel vertically penetrating the gates to be electrically connected to the epitaxial layer, and a memory layer provided between the vertical channel and the gates. The epitaxial layer has a top surface positioned at a level between a bottom surface of the lowermost one of the gates and the top surface of the substrate.
Abstract:
A semiconductor device includes a plurality of first insulating layers and a plurality of second layers alternately and vertically stacked on a substrate. Each of the plurality of second layers includes a horizontal electrode horizontally separated by a second insulating layer. A contact plug penetrates the plurality of first insulating layers and the second insulating layer of the plurality of second layers.
Abstract:
A semiconductor device includes a plurality of first insulating layers and a plurality of second layers alternately and vertically stacked on a substrate. Each of the plurality of second layers includes a horizontal electrode horizontally separated by a second insulating layer. A contact plug penetrates the plurality of first insulating layers and the second insulating layer of the plurality of second layers.
Abstract:
A semiconductor memory device and a method of fabricating the same. The device includes a plurality of gates vertically stacked on a top surface of a substrate with an epitaxial layer formed in the substrate, a vertical channel vertically penetrating the gates to be electrically connected to the epitaxial layer, and a memory layer provided between the vertical channel and the gates. The epitaxial layer has a top surface positioned at a level between a bottom surface of the lowermost one of the gates and the top surface of the substrate.
Abstract:
A three dimensional semiconductor memory device has a stacked structure including cell gates stacked therein that are insulated from each other and first string selection gates laterally separated from each other, vertical active patterns extending through the first string selection gates, multi-layered dielectric layers between sidewalls of the vertical active patterns and the cell gates and between the sidewalls of the vertical active patterns and the first string selection gates, and at least one first supplement conductive pattern. The first string selection gates are disposed over an uppermost cell gate of the cell gates. Each vertical active pattern extends through each of the cell gates stacked under the first string selection gates. The first supplement conductive pattern is in contact with a sidewall of one of the first string selection gates.
Abstract:
A nonvolatile memory device includes a substrate and a plurality of cell strings provided on the substrate, each cell string including a plurality of memory cells stacked in a direction perpendicular to the substrate. The methods may include applying a word line erase voltage to word lines connected to memory cells of the cell strings; floating ground selection lines connected to ground selection transistors of the cell strings and string selection lines connected to string selection transistors of the plurality of cell strings; applying a ground voltage to at least one lower dummy word line connected to at least one lower dummy memory cell between memory cells and a ground selection transistor in each of the plurality of cell strings; applying an erase voltage to the substrate; and floating the at least one lower dummy word line after applying of the erase voltage.
Abstract:
Provided are a semiconductor device and a method of manufacturing the semiconductor device. The semiconductor device includes a charge storage pattern formed on a substrate; a dielectric pattern formed on the charge storage pattern; a first conductive pattern including silicon doped with a first impurity of a first concentration, the first conductive pattern being disposed on the dielectric pattern; and a second conductive pattern including metal silicide doped with a second impurity of a second concentration, the second conductive pattern being disposed on the first conductive pattern. The first concentration may be higher than the second concentration.
Abstract:
A semiconductor device includes a plurality of first insulating layers and a plurality of second layers alternately and vertically stacked on a substrate. Each of the plurality of second layers includes a horizontal electrode horizontally separated by a second insulating layer. A contact plug penetrates the plurality of first insulating layers and the second insulating layer of the plurality of second layers.
Abstract:
A semiconductor device has a substrate that includes a cell array region and a dummy pattern region surrounding the cell array region. The cell array region includes a cell structure having a plurality of cell active pillars extending in a vertical direction from the cell array region of the substrate and includes cell gate patterns and cell gate interlayer insulating patterns alternately stacked on the substrate. The cell gate patterns and cell gate interlayer insulating patterns have sides facing the cell active pillars. The dummy pattern region includes a damp-proof structure.
Abstract:
A three-dimensional semiconductor device includes a substrate having a cell array region between first and second contact regions. A first stack includes a plurality of first electrodes vertically provided on the substrate, and a second stack includes a plurality of second electrodes vertically provided on the first stack. The second stack is arranged to expose end portions of the first electrodes on the first contact region and overlap end portions of the first electrodes on the second contact region.