Abstract:
A semiconductor structure and a method for fabricating the semiconductor structure provide a field effect device located and formed upon an active region of a semiconductor substrate and at least one of a fuse structure, an anti-fuse structure and a resistor structure located and formed at least in part simultaneously upon an isolation region laterally separated from the active region within the semiconductor substrate. The field effect device includes a gate dielectric comprising a high dielectric constant dielectric material and a gate electrode comprising a metal material. The at least one of the fuse structure, anti-fuse structure and resistor structure includes a pad dielectric comprising the same material as the gate dielectric, and optionally, also a fuse, anti-fuse or resistor that may comprise the same metal material as the gate electrode.
Abstract:
A junction field effect transistor (JFET) (Fig. 4) has a hyperabrupl junction laj cr (54) that functions as a channel of a JFFT. The hyperabrupt junction layer (54) is formed by two dopant profiles (50. 52) of opposite t}pes such that one dopant concentration profile has a peak concentration depth at a tail end of the other dopant profile. The voltage bias to the channel is provided by a body ( 16) that is doped with the same type of dopants as the gate. This is in contrast with conventional JI7KTs that have a body that is doped with the opposite conductivity type as the gate. The body ( 16) may be electrically decoupled from (Figure 4, 10 and 30) the substrate by another reverse bias junction formed either between the body and the substrate or between a buried conductor layer beneath the body and the substrate (Figure 8. 16 and 1 10). The capability to form a thin hyperabrupt junction layer (54) allows formation of a JFET in a semiconductor-on-insulator substrate (Figure 11. 210. 230).
Abstract:
A method and structure for a MIM capacitor, the structure including: an electronic device, comprising: an interlevel dielectric layer formed on a semiconductor substrate; a copper bottom electrode formed in the interlevel dielectric layer, a top surface of the bottom electrode co-planer with a top surface of the interlevel dielectric layer; a conductive diffusion barrier in direct contact with the top surface of the bottom electrode; a MIM dielectric in direct contact with a top surface of the conductive diffusion barrier; and a top electrode in direct contact with a top surface of the MIM dielectric. The conductive diffusion barrier may be recessed into the copper bottom electrode or an additional recessed conductive diffusion barrier provided. Compatible resistor and alignment mark structures are also disclosed.
Abstract:
A method and structure for a MIM capacitor, the structure including: an electronic device, comprising: an interievel dielectric layer formed on a semiconductor substrate; a copper bottom electrode formed in the interievel dielectric layer, atop surface of the bottom electrode co-planer with a top surface of the interievel dielectric layer; a conductive diffusion barrier in direct contact with the top surface of the bottom electrode; a MIM dielectric in direct contact with a top surface of the conductive diffusion barrier; and a top electrode in direct contact with a top surface of the MIM dielectric. The conductive diffusion barrier may be recessed into the copper bottom electrode or an additional recessed conductive diffusion barrier provided. Compatible resistor and alignment mark structures are also disclosed.
Abstract:
A thin film resistor device and method of manufacture includes a layer of a thin film conductor material (20) and a current density enhancing layer (CDEL). The CDEL is an insulator material adapted to adhere to the thin film conductor material (20) and enables the said thin film resistor to carry higher current densities with reduced shift in resistance. In one embodiment, the thin film resistor device includes a single CDEL layer (50) formed on one side (atop or underneath) the thin film conductor material (20). In a second embodiment, two CDEL layers are formed on both sides (atop and underneath) of the thin film conductor material (20). The resistor device may be manufactured as part of both BEOL and FEOL rocesses.
Abstract:
Disclosed is a method of fabricating a metal-insulator-metal (MIM) capacitor. In this method, a dielectric layer (102, 106) is formed above a lower conductor layer (100) and an upper conductor layer (104, 108) is formed above the dielectric layer. The invention then forms an etch stop layer (200) above the upper conductor layer and the dielectric layer, and forms a hardmask (202) (silicon oxide hardmask, a silicon nitride hardmask, etc.) over the etch stop layer. Next, a photoresist (300) is patterned above the hardmask, which allows the hardmask, the etch stop layer, the dielectric layer, and the lower conductor layer to be etched through the photoresist.
Abstract:
An interdigitated structure may include at least one first metal line, at least one second metal line parallel to the at least one first metal line and separated from the at least one first metal line, and a third metal line contacting ends of the at least one first metal line and separated from the at least one second metal line. The at least one first metal line does not vertically contact any metal via and at least one second metal line may vertically contact at least one metal via. Multiple layers of interdigitated structure may be vertically stacked. Alternately, an interdigitated structure may include a plurality of first metal lines and a plurality of second metal lines, each metal line not vertically contacting any metal via. Multiple instances of interdigitated structure may be laterally replicated and adjoined, with or without rotation, and/or vertically stacked to form a capacitor.
Abstract:
An interdigitated structure may include at least one first metal line, at least one second metal line parallel to the at least one first metal line and separated from the at least one first metal line, and a third metal line contacting ends of the at least one first metal line and separated from the at least one second metal line. The at least one first metal line does not vertically contact any metal via and at least one second metal line may vertically contact at least one metal via. Multiple layers of interdigitated structure may be vertically stacked. Alternately, an interdigitated structure may include a plurality of first metal lines and a plurality of second metal lines, each metal line not vertically contacting any metal via. Multiple instances of interdigitated structure may be laterally replicated and adjoined, with or without rotation, and/or vertically stacked to form a capacitor.
Abstract:
A semiconductor structure and a method for fabricating the semiconductor structure provide a field effect device located and formed upon an active region of a semiconductor substrate and at least one of a fuse structure, an anti-fuse structure and a resistor structure located and formed at least in part simultaneously upon an isolation region laterally separated from the active region within the semiconductor substrate. The field effect device includes a gate dielectric comprising a high dielectric constant dielectric material and a gate electrode comprising a metal material. The at least one of the fuse structure, anti-fuse structure and resistor structure includes a pad dielectric comprising the same material as the gate dielectric, and optionally, also a fuse, anti-fuse or resistor that may comprise the same metal material as the gate electrode.
Abstract:
A thin film resistor device and method of manufacture includes a layer of a thin film conductor material (20) and a current density enhancing layer (CDEL). The CDEL is an insulator material adapted to adhere to the thin film conductor material (20) and enables the said thin film resistor to carry higher current densities with reduced shift in resistance. In one embodiment, the thin film resistor device includes a single CDEL layer (50) formed on one side (atop or underneath) the thin film conductor material (20). In a second embodiment, two CDEL layers are formed on both sides (atop and underneath) of the thin film conductor material (20). The resistor device may be manufactured as part of both BEOL and FEOL rocesses.