摘要:
The invention includes methods for utilizing partial silicon-on-insulator (SOI) technology in combination with fin field effect transistor (finFET) technology to form transistors particularly suitable for utilization in dynamic random access memory (DRAM) arrays. The invention also includes DRAM arrays having low rates of refresh. Additionally, the invention includes semiconductor constructions containing transistors with horizontally-opposing source/drain regions and channel regions between the source/drain regions. The transistors can include gates that encircle at least three-fourths of at least portions of the channel regions, and in some aspects can include gates that encircle substantially an entirety of at least portions of the channel regions.
摘要:
In accordance with embodiments, there are provided mechanisms and methods for selecting a synchronous or asynchronous process to determine a forecast. These mechanisms and methods for such synchronous/asynchronous process selection can enable embodiments to determine forecasts for multiple users (e.g. with hierarchical relationships, etc.) over an arbitrary time interval. The ability of embodiments to provide forecasts that involve such a large amount of data in an effective way can enable forecasting that was otherwise infeasible due to resource limitations.
摘要:
Pitch multiplied and non-pitch multiplied features of an integrated circuit, e.g., features in the array, interface and periphery areas of the integrated circuit, are formed by processing a substrate through a mask. The mask is formed by patterning a photoresist layer which simultaneously defines mask elements corresponding to features in the array, interface and periphery areas of the integrated circuit. The pattern is transferred to an amorphous carbon layer. Sidewall spacers are formed on the sidewalls of the patterned amorphous carbon layer. A layer of protective material is deposited and then patterned to expose mask elements in the array region and in selected parts of the interface or periphery areas. Amorphous carbon in the array region or other exposed parts is removed, thereby leaving a pattern including free-standing, pitch multiplied spacers in the array region. The protective material is removed, leaving a pattern of pitch multiplied spacers in the array region and non-pitch multiplied mask elements in the interface and periphery areas. The pattern is transferred to a hard mask layer, through which an underlying substrate is etched.
摘要:
A process may include first etching a trench isolation dielectric through a dielectric hard mask that abuts the sidewall of a fin semiconductor. The first etch can be carried out to expose at least a portion of the sidewall, causing the dielectric hard mask to recede to a greater degree in the lateral direction than the vertical direction. The process may include second etching the fin semiconductor to achieve a thinned semiconductor fin, which has receded beneath the shadow of the laterally receded hard mask. The thinned semiconductor fin may have a characteristic dimension that can exceed photolithography limits. Electronic devices may include the thinned semiconductor fin as part of a field effect transistor.
摘要:
Memory devices, such as DRAM memory devices, may include one or more metal layers above a local interconnect of the DRAM memory that make contact to lower gate regions of the memory device. As the size of semiconductor components decreases and circuit densities increase, the density of the metal routing in these upper metal layers becomes increasingly difficult to fabricate. By providing additional metal routing in the lower gate regions that may be coupled to the upper metal layers, the spacing requirements of the upper metal layers may be eased, while maintaining the size of the semiconductor device. In addition, the additional metal routing formed in the gate regions of the memory devices may be disposed parallel to other metal contacts in a strapping configuration, thus reducing a resistance of the metal contacts, such as buried digit lines of a DRAM memory cell.
摘要:
A process may include first etching a trench isolation dielectric through a dielectric hard mask that abuts the sidewall of a fin semiconductor. The first etch can be carried out to expose at least a portion of the sidewall, causing the dielectric hard mask to recede to a greater degree in the lateral direction than the vertical direction. The process may include second etching the fin semiconductor to achieve a thinned semiconductor fin, which has receded beneath the shadow of the laterally receded hard mask. The thinned semiconductor fin may have a characteristic dimension that can exceed photolithography limits. Electronic devices may include the thinned semiconductor fin as part of a field effect transistor.
摘要:
Novel etch techniques are provided for shaping silicon features below the photolithographic resolution limits. FinFET devices are defined by recessing oxide and exposing a silicon protrusion to an isotropic etch, at least in the channel region. In one implementation, the protrusion is contoured by a dry isotropic etch having excellent selectivity, using a downstream microwave plasma etch.
摘要:
In accordance with embodiments, there are provided mechanisms and methods for selecting a synchronous or asynchronous process to determine a forecast. These mechanisms and methods for such synchronous/asynchronous process selection can enable embodiments to determine forecasts for multiple users (e.g. with hierarchical relationships, etc.) over an arbitrary time interval. The ability of embodiments to provide forecasts that involve such a large amount of data in an effective way can enable forecasting that was otherwise infeasible due to resource limitations.
摘要:
The present invention includes a method for preventing distortion in semiconductor fabrication. The method comprises providing a substrate comprising a film comprising silicon nitride. The substrate is treated in a vacuum of about 3.0-6.5 Torr in an atmosphere comprising oxygen plasma wherein the oxygen plasma flow rate is at least about 300 sccm oxygen. A resist is applied to the treated substrate and the resist is patterned over the treated substrate.
摘要:
The invention includes a method of forming a gated semiconductor assembly. A first transistor gate layer is formed over a substrate. A silicon nitride layer is formed over the first transistor gate layer. The silicon nitride layer comprises a first portion and a second portion elevationally displaced above the first portion. The first portion has less electrical resistance than the second portion and a different stoichiometric composition than the second portion. The first portion is physically against the second portion. A second transistor gate layer is formed over the silicon nitride layer.