摘要:
A nonvolatile semiconductor memory device includes: a stacked body in which insulating films and electrode films are alternately stacked; selection gate electrodes provided on the stacked body; bit lines provided on the selection gate electrodes; semiconductor pillars; connective members separated from one another; and a charge storage layer provided between the electrode film and the semiconductor pillar. One of the connective members is connected between a lower part of one of the semiconductor pillars and a lower part of another of the semiconductor pillars. The one of the semiconductor pillars passes through one of the selection gate electrodes and is connected to one of the bit lines, and the another of the semiconductor pillars passes through another of the selection gate electrodes and is connected to another of the bit lines.
摘要:
According to one embodiment, a nonvolatile semiconductor memory device comprises a first conductive layer, a second conductive layer, a first inter-electrode insulating film, and a third conductive layer stacked above the first conductive layer, a memory film, a semiconductor layer, an insulating member, and a silicide layer. The memory film and the semiconductor layer is formed on the inner surface of through hole provided in the second conductive layer, the first inter-electrode insulating film, and the third conductive layer. The insulating member is buried in a slit dividing the second conductive layer, the first inter-electrode insulating film, and the third conductive layer. The silicide layer is formed on surfaces of the second conductive layer and the third conductive layer in the slit. The distance between the second conductive layer and the third conductive layer along the inner surface of the slit is longer than that of along the stacking direction.
摘要:
A semiconductor memory device according to one embodiment of the present invention includes a dielectric film configured to store information depending on presence or absence of a conductive path therein, and a plurality of electrodes provided to contact a first surface of the dielectric film. The conductive path can be formed between two electrodes arbitrarily selected form the plurality of electrodes. The conductive path has a rectifying property of allowing a current to flow more easily in a first direction connecting arbitrary two electrodes than in a second direction opposite to the first direction. The largest possible number of the conductive paths that may be formed is larger than the number of the plurality of electrodes.
摘要:
According to one embodiment, a semiconductor memory device includes a semiconductor substrate, memory cell array portion, single-crystal semiconductor layer, and circuit portion. The memory cell array portion is formed on the semiconductor substrate, and includes memory cells. The semiconductor layer is formed on the memory cell array portion, and connected to the semiconductor substrate by being formed in a hole extending through the memory cell array portion.The circuit portion is formed on the semiconductor layer. The Ge concentration in the lower portion of the semiconductor layer is higher than that in the upper portion of the semiconductor layer.
摘要:
According to one embodiment, a nonvolatile semiconductor memory device includes first and second stacked structural bodies, first and second semiconductor pillars, a memory unit connection portion, a selection unit stacked structural body, first and second selection unit semiconductor pillars, a selection unit connection portion, and first to fifth interconnections. The semiconductor pillars pierce the stacked structural bodies. The first and second interconnections are connected to the first and second semiconductor pillars, respectively. The memory unit connection portion connects the first and second semiconductor pillars. The selection unit semiconductor pillars pierce the selection unit stacked structural body. The third and fourth interconnections are connected to the first and second selection unit semiconductor pillars, respectively. The selection unit connection portion connects the first and second selection unit semiconductor pillars. The fifth interconnection is connected to the third interconnection on a side opposite to the selection unit stacked structural body.
摘要:
According to one embodiment, a semiconductor memory device includes a base, a stacked body, a memory film, a channel body, an interconnection, and a contact plug. The base includes a substrate and a peripheral circuit formed on a surface of the substrate. The stacked body includes a plurality of conductive layers and a plurality of insulating layers alternately stacked above the base. The memory film is provided on an inner wall of a memory hole punched through the stacked body to reach a lowermost layer of the conductive layers. The memory film includes a charge storage film. The interconnection is provided below the stacked body. The interconnection electrically connects the lowermost layer of the conductive layers in an interconnection region laid out on an outside of a memory cell array region and the peripheral circuit. The contact plug pierces the stacked body in the interconnection region to reach the lowermost layer of the conductive layers in the interconnection region.
摘要:
According to one embodiment, a nonvolatile semiconductor memory device includes a substrate, a stacked body, a semiconductor pillar, a charge storage film, and a drive circuit. The stacked body is provided on the substrate. The stacked body includes a plurality of insulating films alternately stacked with a plurality of electrode films. A through-hole is made in the stacked body to align in a stacking direction. The semiconductor pillar is buried in an interior of the through-hole. The charge storage film is provided between the electrode film and the semiconductor pillar. The drive circuit supplies a potential to the electrode film. The diameter of the through-hole differs by a position in the stacking direction. The drive circuit supplies a potential to reduce a potential difference with the semiconductor pillar as a diameter of the through-hole piercing the electrode film decreases.
摘要:
A stacked body is formed on a silicon substrate by stacking a plurality of insulating films and a plurality of electrode films alternately and through-holes are formed to extend in the stacking direction. Next, gaps are formed between the electrode films using etching the insulating films via the through-holes. Charge storage layers are formed along side faces of the through-holes and inner faces of the gaps, and silicon pillars are filled into the through-holes. Thereby, a nonvolatile semiconductor memory device is manufactured.
摘要:
A nonvolatile semiconductor memory device, includes: a stacked structural unit including electrode films alternately stacked with inter-electrode insulating films; first and second semiconductor pillars piercing the stacked structural unit; a connection portion semiconductor layer electrically connect the first and second semiconductor pillars; a connection portion conductive layer provided to oppose the connection portion semiconductor layer; a memory layer and an inner insulating film provided between the first and semiconductor pillars and each of the electrode films, and between the connection portion conductive layer and the connection portion semiconductor layer; an outer insulating film provided between the memory layer and each of the electrode films; and a connection portion outer insulating film provided between the memory layer and the connection portion conductive layer. The connection portion outer insulating film has a film thickness thicker than a film thickness of the outer insulating film.
摘要:
A non-volatile semiconductor storage device includes a first layer and a second layer. The first layer includes: a plurality of first conductive layers extending in parallel to a substrate and laminated in a direction perpendicular to the substrate; a first insulation layer formed on an upper layer of the plurality of first conductive layers; a first semiconductor layer formed to penetrate the plurality of first conductive layers; and a charge accumulation layer formed between the first conductive layers and the first semiconductor layer. Respective ends of the first conductive layers are formed in a stepwise manner in relation to each other in a first direction. The second layer includes: a plurality of second conductive layers extending in parallel to the substrate and laminated in a direction perpendicular to the substrate, the second conductive layers being formed in the same layer as the plurality of first conductive layers; and a second insulation layer formed on an upper layer of the plurality of second conductive layers. Respective ends of the second conductive layers are formed to align along a straight line extending in a direction substantially perpendicular to the substrate at a predetermined area.