摘要:
A semiconductor device comprising a silicon-on-insulator (SOI) substrate including a base substrate, an insulator layer, and a silicon layer, and a trench capacitor including at least one trench formed in the silicon-on-insulator substrate and extending through the base substrate, the insulator layer and the silicon layer, wherein the at least one trench includes at least one layer of silicon dioxide formed therein. In a preferred embodiment, semiconductor material disposed in the at least one trench forms a first electrode of a semiconductor capacitor, and semiconductor material of the SOI substrate which lies adjacent to the at least one trench forms a second electrode of the capacitor.
摘要:
A conductive layer is formed beneath a runner in an integrated circuit. The conductive layer is also formed within vias. The conductive layer preserves electrical connection should the runner separate due, perhaps, to electromigration or stress voiding. The conductive layer also provides protection against various failures or defects which may occur in the runner material within the vias.
摘要:
A method of forming a multi-layered dual-polysilicon structure that forms a polysilicon gate prior to formation of an ion implantation barrier and that requires fewer steps, is more economical, and permits fabrication of more compact semiconductor circuits and devices than prior art methods.
摘要:
A method of forming a transistor is disclosed. Conventional fabrication techniques direct an ion implantation beam toward a substrate upon which a gate has already been formed. If the gate stack is too low relative to the incident beam energy, the dopant species may channel thorugh the gate stack, adversely affecting transistor performance. The present invention prevents channeling through this gate by covering the gate with a protective layer before ion implantation.
摘要:
A bond pad is located over active circuitry formed within an integrated circuit device. A barrier film forms the bottom surface of the upper portion of a bond pad opening which also includes vias extending through the bottom surface to form a dual damascene structure. The bond pad is resistant to stress effects such as cracking, which can be produced when bonding an external wire to the bond pad, and therefore prevents leakage currents between the bond pads and the underlying circuitry.
摘要:
The present invention provides a die located on a semiconductor wafer. In one embodiment, the die includes a circuit region located within a circuit perimeter of the die. In addition, the die includes a bond pad region located between the circuit perimeter and an outer perimeter of the die. Also the die includes an alignment mark located within the bond pad region.
摘要:
A method of forming low stack height transistors having controllable linewidth in an integrated circuit without channeling is disclosed. A disposable hardmask of doped glass is utilized to define the gate and subsequently protect the gate (and the underlying substrate) during ion implantation which forms the source and drains. A variety of silicided and non-silicided) structures may be formed.
摘要:
An insulating structure includes a first silicon nitride layer, a tantalum pentoxide layer formed above the first silicon nitride (SiNx) layer, and a second silicon nitride layer formed above the tantalum pentoxide (Ta2O5) layer. The SiNx cladding layers prevent diffusion of the tantalum during heating. A high dielectric constant is provided. The thermal stability of the insulating structure is improved. The insulating structure may be included in a capacitor or a shallow trench isolation structure. An exemplary capacitor is formed with a substrate, a lower electrode, the three-layer SixNy/Ta2O5/SixNy structure and an upper electrode. The lower electrode may include a TiN layer formed over an aluminum layer, or a TiN layer formed over a polysilicon layer, or a polysilicon layer having an oxide barrier layer formed on it. The upper electrode may be a TiN layer or a polysilicon layer. An exemplary shallow trench isolation structure includes the SixNy/Ta2O5/SixNy structure as a liner on the sides and bottom of a shallow trench in the surface of a substrate. The shallow trench is filled with an oxide, such as TEOS. A variety of methods may be used for fabricating devices that include the SixNy/Ta2O5/SixNy structure.
摘要:
A process for forming a dual damascene bond pad within an integrated circuit produces a bond pad which is resistant to stress effects and which therefore allows for the bond pad to be formed over active circuitry. The process includes forming a dual damascene structure by forming a bond pad opening having a barrier layer film on the bottom surface of the upper portion of the opening, and forming vias which extend downwardly through the bottom surface. The process produces a bond pad which is resistant to stress effects such as cracking which can be produced when bonding an external wire to the bond pad. Leakage currents between the bond pad and the underlying circuitry are prevented.
摘要:
The present invention includes a method for reducing dishing of an integrated circuit interconnect, comprising the steps of providing excess interconnect material above a damascene feature in a substrate and planarizing the substrate and interconnect material to obtain an interconnect in the substrate.