Abstract:
A three dimensional (3D) semiconductor device includes; a vertical channel extending from a lower end proximate a substrate to an upper end and connecting a plurality of memory cells, and a cell array comprising the plurality of cells, wherein the cell array is arranged in a gate stack of layers having a stair-stepped structure disposed on the substrate. The gate stack includes a lower layer including a lower select line coupled to a lower non-memory transistor proximate the lower end, upper layers including conductive lines respectively coupled to an upper non-memory transistor proximate the upper end and connected as a single conductive piece to form an upper select line, and intermediate layers respectively including a word line and coupled to a cell transistor, wherein the intermediate layers are disposed between the lower select line and the upper select line.
Abstract:
Provided is a three-dimensional semiconductor device and method for fabricating the same. The device includes a first electrode structure and a second electrode structure stacked sequentially on a substrate. The first and second electrode structures include stacked first electrodes and stacked second electrodes, respectively. Each of the first and second electrodes includes a horizontal portion parallel with the substrate and an extension portion extending from the horizontal portion along a direction penetrating an upper surface of the substrate. Here, the substrate may be closer to top surfaces of the extension portions of the first electrodes than to the horizontal portion of at least one of the second electrodes.
Abstract:
A three-dimensional semiconductor device may include a substrate including wiring and contact regions and a thin film structure on the wiring and contact regions of the substrate. The thin-film structure may include a plurality of alternating wiring layers and inter-layer insulating layers defining a terraced structure in the contact region so that each of the wiring layers includes a contact surface in the contact region that extends beyond others of the wiring layers more distant from the substrate. A plurality of contact structures may extend in a direction perpendicular to a surface of the substrate with each of the contact structures being electrically connected to a contact surface of a respective one of the wiring layers. Related methods are also discussed.
Abstract:
A semiconductor device including: a memory cell array region and a staircase region on a pattern structure; a stack structure including insulating layers and gate layers with gate pads alternately stacked in a vertical direction; a separation structure penetrating through the stack structure and contacting the pattern structure; a memory vertical structure penetrating through the stack structure and contacting the pattern structure; a support vertical structure penetrating through the stack structure and contacting the pattern structure; gate contact plugs disposed on the gate pads; and a peripheral contact plug spaced apart from the gate layers, wherein an upper surface of the memory vertical structure is at a first level, an upper surface of the peripheral contact plug is at a second level, an upper surface of the separation structure is at a third level, and upper surfaces of the gate contact plugs are at a fourth level.
Abstract:
A semiconductor device includes a substrate having a first region, a second region, and a third region with gate electrodes spaced apart from each other in the first region and the second region. The semiconductor device also includes interlayer insulating layers alternately stacked with the gate electrodes, channel structures passing through the gate electrodes in the first region, first dummy structures passing through the gate electrodes in the second region, the first dummy structures disposed adjacent to the first region, second dummy structures passing through the gate electrodes in the second region, the second dummy structures disposed adjacent to the third region, and having different shapes from the first dummy structures, and support structures passing through the gate electrodes in the third region. A size of each of the second dummy structures is larger than a size of each of the support structures.
Abstract:
A semiconductor device includes a first stack structure on a substrate, and a second stack structure on the first stack structure. A channel structure extends through the first stack structure and the second stack structure. A first auxiliary stack structure including a plurality of first insulating layers and a plurality of first mold layers are alternately stacked on the substrate. An alignment key extends into the first auxiliary stack structure and protrudes to a higher level than an uppermost end of the first stack structure. A second auxiliary stack structure is disposed on the first auxiliary stack structure and the alignment key, and includes a plurality of second insulating layers and a plurality of second mold layers alternately stacked. The second auxiliary stack structure includes a protrusion aligned with the alignment key.
Abstract:
A semiconductor memory device includes a substrate having a first region, a second region, and a third region main separation regions extending in the first direction and apart from each other in a second direction, first auxiliary separation regions extending in the first direction and spaced apart from each other in the second direction, and second auxiliary separation regions extending in the first direction and spaced apart from each other in the second direction. The first auxiliary separation regions are at a first pitch in the second direction between the main separation regions, the second auxiliary separation regions are disposed at a second pitch, smaller than the first pitch in the second direction between the main separation regions, and the first auxiliary separation regions and the second auxiliary separation regions are shifted from each other in the second direction.
Abstract:
A semiconductor device includes a substrate having a first region, a second region, and a third region with gate electrodes spaced apart from each other in the first region and the second region. The semiconductor device also includes interlayer insulating layers alternately stacked with the gate electrodes, channel structures passing through the gate electrodes in the first region, first dummy structures passing through the gate electrodes in the second region, the first dummy structures disposed adjacent to the first region, second dummy structures passing through the gate electrodes in the second region, the second dummy structures disposed adjacent to the third region, and having different shapes from the first dummy structures, and support structures passing through the gate electrodes in the third region. A size of each of the second dummy structures is larger than a size of each of the support structures.
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 three-dimensional semiconductor device may include a substrate including wiring and contact regions and a thin film structure on the wiring and contact regions of the substrate. The thin-film structure may include a plurality of alternating wiring layers and inter-layer insulating layers defining a terraced structure in the contact region so that each of the wiring layers includes a contact surface in the contact region that extends beyond others of the wiring layers more distant from the substrate. A plurality of contact structures may extend in a direction perpendicular to a surface of the substrate with each of the contact structures being electrically connected to a contact surface of a respective one of the wiring layers. Related methods are also discussed.