Abstract:
There are provided a semiconductor device and a fabricating method thereof, in which a plurality of buried diffusion layers repeatedly extend on a semiconductor substrate and a plurality of word lines repeatedly extend on the buried diffusion layers, perpendicularly to the buried diffusion layers. The cross-sections of the word lines are shaped in asymmetrical polygons, with odd-numbered word lines having the same cross-section and the even-numbered word lines having the same cross-section. Narrow gate electrodes can be formed on the buried diffusion layers, using a spacer mask, so that the area of a memory cell array can be reduced by 50% and thus a cell integration level can be increased.
Abstract:
A memory device includes a substrate having a cell array region defined therein. A dummy structure is disposed on or in the substrate near a boundary of the cell array region. The memory device also includes a vertical channel region disposed on the substrate in the cell array region. The memory device further includes a plurality of vertically stacked conductive gate lines with insulating layers interposed therebetween, the conductive gate lines and interposed insulating layers disposed laterally adjacent the vertical channel region and extending across the dummy structure, at least an uppermost one of the conductive gate lines and insulating layers having a surface variation at the crossing of the dummy structure configured to serve as a reference feature. The dummy structure may include a trench, and the surface variation may include an indentation overlying the trench.
Abstract:
Step shape pad structure and wiring structure in vertical type semiconductor device are include a first conductive line having a first line shape and including first pad regions at an upper surface of an edge portion, and a second conductive line having s second line shape and being spaced apart from the first conductive line and provided on the first conductive line. An end portion of the first conductive line is extended to a first position. Second pad regions are included on an upper surface of an edge portion of the second conductive line. An end portion of the second conductive line is extended to the first position. The second conductive line includes a dent portion at a facing portion to the first pad regions in a vertical direction to expose the first pad regions. The pad structure may be used in a vertical type nonvolatile memory device.
Abstract:
Provided is a semiconductor device that includes first and second isolation patterns disposed on a substrate. Alternately stacked interlayer insulating patterns and a conductive patterns are disposed on a surface of the substrate between the first and second isolation patterns. A support pattern penetrates the conductive patterns and the interlayer insulating patterns and has a smaller width than the first and second isolation patterns. First and second vertical structures are disposed between the first isolation and the support pattern and penetrate the conductive patterns and the interlayer insulating patterns. A second vertical structure is disposed between the second isolation pattern and the support pattern and penetrates the conductive patterns and the interlayer insulating patterns. A distance between top and bottom surfaces of the support pattern is greater than a distance between a bottom surface of the support pattern and the surface of the substrate.
Abstract:
Provided are a semiconductor device and a method of fabricating the semiconductor device. The semiconductor device can include first transistors that include a first gate insulating layer having a first thickness and second transistors include a second gate insulating layer having a second thickness less than the first thickness. At least one of the transistors formed on the first or second gate insulating layers is directly over a dummy well.
Abstract:
A method of manufacturing a semiconductor device including forming a plurality of gate structures spaced apart from each other on a substrate; forming a first insulation layer covering the gate structures, the first insulation layer including a void between the gate structures; removing an upper portion of the first insulation layer to form a first insulation layer pattern on sidewalls of lower portions of the gate structures and on the substrate between the gate structures, the first insulation layer pattern including a first recess thereon; forming a conductive layer on upper portions of the gate structures exposed by the first insulation layer pattern; reacting the conductive layer with the gate structures; and forming a second insulation layer on the upper portions of the gate structures, the second insulation layer including a second recess therebeneath in fluid communication with the first recess.
Abstract:
Provided is a nonvolatile memory device and a fabrication method. The nonvolatile memory device includes an active region defined in a semiconductor substrate, a gate insulating layer formed on the active region and a plurality of gate patterns formed on the gate insulating layer, and crossing over the active region. The gate insulating layer includes a discharge region in a predetermined portion between the gate patterns, the discharge region having a lesser thickness than that of the gate insulating layer under the gate pattern, because a thickness portion of the gate insulating layer is removed to form the discharge region.
Abstract:
Provided is a nonvolatile memory device and a fabrication method. The nonvolatile memory device includes an active region defined in a semiconductor substrate, a gate insulating layer formed on the active region and a plurality of gate patterns formed on the gate insulating layer, and crossing over the active region. The gate insulating layer includes a discharge region in a predetermined portion between the gate patterns, the discharge region having a lesser thickness than that of the gate insulating layer under the gate pattern, because a thickness portion of the gate insulating layer is removed to form the discharge region.
Abstract:
Provided is a nonvolatile memory device and a fabrication method. The nonvolatile memory device includes an active region defined in a semiconductor substrate, a gate insulating layer formed on the active region and a plurality of gate patterns formed on the gate insulating layer, and crossing over the active region. The gate insulating layer includes a discharge region in a predetermined portion between the gate patterns, the discharge region having a lesser thickness than that of the gate insulating layer under the gate pattern, because a thickness portion of the gate insulating layer is removed to form the discharge region.
Abstract:
Methods of forming a semiconductor device include an active region and a shallow trench isolation region in a semiconductor substrate, and forming a gate insulation layer on the active region. The gate insulation layer includes a first part spaced apart from the shallow trench isolation region and a second part adjacent the shallow trench isolation region and disposed between the shallow trench isolation region and the first part, and thicker than the first part. The methods further include forming a first impurity region in the active region of the semiconductor substrate adjacent the first part, and forming a gate line on the gate insulation layer. Corresponding semiconductor devices are also disclosed.