Abstract:
A vertical non-volatile memory device includes a substrate, and a first stack of word lines and a second stack of word lines extending in a first direction on the substrate and separated from each other in a second direction perpendicular to the first direction. The device further includes first array lines extending in the second direction on the first and the second stack, and connected to word lines of the first and the second stack through at least two of first via contacts in a same level. The device further include first word select lines being in a same level and extending in the first direction, and connected to each of the first array lines through at least one of second via contacts. Ends of each of the first and the second stack have a form of stairs on the substrate.
Abstract:
A semiconductor memory device includes gate electrodes arranged on a substrate to be spaced apart from each other in a first direction perpendicular to an upper surface of the substrate, an upper insulation layer arranged on an uppermost gate electrode, channel structures penetrating through the upper insulation layer, and the gate electrodes in the first direction, and string selection line cut insulation layers horizontally separating the upper insulation layer and the uppermost gate electrode. Each of the string selection line cut insulation layers includes a protrusion protruding toward the uppermost gate electrode and positioning on the same level as the first gate electrode.
Abstract:
A vertical memory device includes first gate electrodes stacked on a cell region of a substrate and spaced apart from each other in a vertical direction substantially perpendicular to an upper surface of the substrate, a channel extending through the first gate electrodes and extending in the vertical direction, a first contact plug structure contacting a corresponding one of the first gate electrodes, extending in the vertical direction, and including a first metal pattern, a first barrier pattern covering a lower surface and a sidewall of the first metal pattern and a first metal silicide pattern covering a lower surface and a sidewall of the first barrier pattern, and a second contact plug structure extending in the vertical direction on a peripheral circuit region of the substrate and including a second metal pattern and a second barrier pattern covering a lower surface and a sidewall of the second metal pattern.
Abstract:
Nonvolatile memory devices, operating methods thereof, and memory systems including the same. A nonvolatile memory device may include a memory cell array and a word line driver. The memory cell array may include a plurality of memory cells. The word line driver may be configured to apply word line voltages to a plurality of word lines connected to the plurality of memory cells, respectively. Magnitudes of the word line voltages may be determined according to locations of the plurality of word lines.
Abstract:
Nonvolatile memory devices, operating methods thereof, and memory systems including the same. A nonvolatile memory device may include a memory cell array and a word line driver. The memory cell array may include a plurality of memory cells. The word line driver may be configured to apply word line voltages to a plurality of word lines connected to the plurality of memory cells, respectively. Magnitudes of the word line voltages may be determined according to locations of the plurality of word lines.
Abstract:
A vertical NAND flash memory device includes a substrate having a face and a string of serially connected flash memory cells on the substrate. A first flash memory cell is adjacent the face, and a last flash memory cell is remote from the face. The flash memory cells include repeating layer patterns that are stacked on the face, and a pillar that extends through the series of repeating layer patterns. The pillar includes at least one oblique wall. At least two of the series of repeating layer patterns in the string are of different thicknesses. Other vertical microelectronic devices and related fabrication methods are also described.
Abstract:
A vertical memory device includes first gate electrodes stacked on a cell region of a substrate and spaced apart from each other in a vertical direction substantially perpendicular to an upper surface of the substrate, a channel extending through the first gate electrodes and extending in the vertical direction, a first contact plug structure contacting a corresponding one of the first gate electrodes, extending in the vertical direction, and including a first metal pattern, a first barrier pattern covering a lower surface and a sidewall of the first metal pattern and a first metal silicide pattern covering a lower surface and a sidewall of the first barrier pattern, and a second contact plug structure extending in the vertical direction on a peripheral circuit region of the substrate and including a second metal pattern and a second barrier pattern covering a lower surface and a sidewall of the second metal pattern.
Abstract:
Nonvolatile memory devices, operating methods thereof, and memory systems including the same. A nonvolatile memory device may include a memory cell array and a word line driver. The memory cell array may include a plurality of memory cells. The word line driver may be configured to apply word line voltages to a plurality of word lines connected to the plurality of memory cells, respectively. Magnitudes of the word line voltages may be determined according to locations of the plurality of word lines.
Abstract:
Nonvolatile memory devices, operating methods thereof, and memory systems including the same. A nonvolatile memory device may include a memory cell array and a word line driver. The memory cell array may include a plurality of memory cells. The word line driver may be configured to apply word line voltages to a plurality of word lines connected to the plurality of memory cells, respectively. Magnitudes of the word line voltages may be determined according to locations of the plurality of word lines.
Abstract:
A vertical non-volatile memory device includes a substrate, and a first stack of word lines and a second stack of word lines extending in a first direction on the substrate and separated from each other in a second direction perpendicular to the first direction. The device further includes first array lines extending in the second direction on the first and the second stack, and connected to word lines of the first and the second stack through at least two of first via contacts in a same level. The device further include first word select lines being in a same level and extending in the first direction, and connected to each of the first array lines through at least one of second via contacts. Ends of each of the first and the second stack have a form of stairs on the substrate.