摘要:
A semiconductor memory device includes select transistors, cell transistors, and cell units. The select transistors formed on a substrate and include first electrodes. The cell transistors include second electrodes with a charge storage layer and a control. The cell units including a plurality of the cell transistors connected together in series between the two select transistors. A distance between the first electrodes and a distance between the first electrodes which is adjacent to the second electrodes and adjacent second electrodes are each at least double a distance between second electrodes. A surface of the substrate between second electrodes is flush with the surface of the substrate between the first electrode and the adjacent second electrodes. The surface of the substrate between the first electrodes is positioned lower than the surface of the substrate between the first electrodes and the second electrodes.
摘要:
According to one embodiment, a semiconductor storage device includes a plurality of parallel first interconnects extending in a first direction, a plurality of parallel second interconnects which extend in a second direction perpendicular to the first direction and which make a two-level crossing with respect to the first interconnects, and memory cell structures provided in regions where the first interconnects and the second interconnects make two-level crossings, the memory cell structures being connected on one end to the first interconnects and connected on the other end to the second interconnects, the memory cell structure including a variable resistive element and a non-ohmic element which are connected in series, wherein the endmost first interconnect is disconnected in at least one portion.
摘要:
A nonvolatile semiconductor memory device includes a first stack unit with a first selection transistor and a second selection transistor formed on a semiconductor substrate and a second stack unit with first insulating layers and first conductive layers stacked alternately on the upper surface of the first stack unit. The second stack unit includes a second insulating layer formed in contact with side walls of the first insulating layer and the first conductive layer, a charge storage layer formed in contact with the second insulating layer for storing electrical charges, a third insulating layer formed in contact with the charge storage layer, and a first semiconductor layer formed in contact with the third insulating layer so as to extend in a stacking direction, with one end connected to one diffusion layer of the first selection transistor and the other end connected to a diffusion layer of the second selection transistor.
摘要:
A semiconductor device includes a resistance element. The resistance element includes a first and second conductive films, second insulating film, and contact plugs. The first conductive film is formed on a semiconductor substrate with a first insulating film interposed therebetween. The second insulating film is formed on the first conductive film. The second conductive film is formed on the second insulating film. In the first connection portion, the second insulating film is removed. The first connection portion connects the first conductive film and the second conductive film together. The contact plugs are formed on the second conductive film. The contact plugs are arranged such that a region located on the second conductive film and immediately above the connection portion is sandwiched between the contact plugs.
摘要:
An LED drive circuit that is connectable to a phase control type of light adjuster and receives a voltage based on an a.c. voltage to drive an LED load, the LED drive circuit has a structure which includes: an adjustment signal generation portion that generates an adjustment signal in accordance with a characteristic of a phase control type of light adjuster which is connected to the LED drive circuit; and an adjustment portion that receives the adjustment signal to adjust a characteristic for driving the LED load.
摘要:
A semiconductor memory device according to an embodiment includes a cell array block having a plurality of cell arrays stacked therein, each of the cell arrays including a plurality of memory cells and a plurality of selective wirings selecting the plurality of memory cells are stacked, a pillar-shaped first via extending in a stack direction from a first height to a second height and having side surfaces connected to a first wiring, and a pillar-shaped second via extending in the stack direction from the first height to the second height and having side surfaces connected to a second wiring upper than the first wiring, the second wiring being thicker in the stack direction than the first wiring and having a higher resistivity than the first wiring.
摘要:
The present invention provides a metal gasket to be fitted between a cylinder head and a cylinder block to seal a gap between the surfaces thereof, which comprises: a thin metal plate with an opening formed at a position corresponding to a bore portion of the cylinder block, the opening having a diameter larger than that of the bore portion; and a pair of elastic metal substrates each having: an opening which substantially agrees with the bore portion of the cylinder block; an annular convex portion formed concentrically with the opening at a position apart from an edge portion of the opening by a specified distance; and an annular holding portion for holding a peripheral portion of the opening of the thin metal plate, horizontally extending out from an outer edge portion of the convex portion, wherein the pair of the elastic metal substrates are disposed so that top portions of the respective convex portions face each other and that the holding portions overlap with the thin metal plate, and engaged to the thin metal plate at a plurality of positions.