摘要:
A non-volatile memory device includes a substrate including an active region and a field region, selection transistors and cell transistors on the active region, bit line contacts on the bridge portions, and shared bit lines electrically connected to the bit line contacts. The active region includes string portions and bridge portions. The string portions extends in a first direction and is arranged in a second direction substantially perpendicular to the first direction, and the bridge portions connects at least two adjacent string portions. Each bridge portion has a length in the first direction equal to or longer than about twice a width of each bit line contact in the first direction.
摘要:
A vertical memory device includes a substrate including a cell region and a peripheral circuit region, gate electrodes sequentially stacked on the cell region of the substrate in a vertical direction substantially perpendicular to an upper surface of the substrate, a channel on the cell region and extending through the gate electrodes in the vertical direction, a first lower contact plug on the peripheral circuit region and extending in the vertical direction, a second lower contact plug on the peripheral circuit region adjacent to the first lower contact plug and extending in the vertical direction, and a first upper wiring electrically connected to the first lower contact plug. The first upper wiring is configured to and apply an electrical signal to the first lower contact plug. The second lower contact plug is not electrically connected to an upper wiring configured to apply an electrical signal.
摘要:
Disclosed herein is a method of manufacturing inorganic hollow yarns, such as cermets, oxide-non oxide composites, poorly sinterable non-oxides, and the like, at low costs. The method includes preparing a composition comprising a self-propagating high temperature reactant, a polymer and a dispersant, wet-spinning the composition through a spinneret to form wet-spun yarns, washing and drying the wet-spun yarns to form polymer-self propagating high temperature reactant hollow yarns, and heat-treating the polymer-self propagating high temperature reactant hollow yarns to remove a polymeric component from the polymer-self propagating high temperature reactant hollow yarns while inducing self-propagating high temperature reaction of the self-propagating high temperature reactant to form inorganic hollow yarns. The composition comprises 45˜60 wt % of the self-propagating high temperature reactant, 6˜17 wt % of the polymer, 0.1˜4 wt % of the dispersant, and the balance of an organic solvent.
摘要:
In a NAND flash memory device, a dummy NAND string is arranged between a plurality of normal NAND strings. A dummy bit line connected to the dummy NAND string is formed and/or controlled such that when program voltages are applied to the normal NAND strings, memory cells within the dummy NAND string are not programmed.