摘要:
An approach for providing timing-closed FinFET designs from planar designs is disclosed. Embodiments include: receiving one or more planar cells associated with a planar design; generating an initial FinFET design corresponding to the planar design based on the planar cells and a FinFET model; and processing the initial FinFET design to provide a timing-closed FinFET design. Other embodiments include: determining a race condition associated with a path of the initial FinFET design based on a timing analysis of the initial FinFET design; and increasing delay associated with the path to resolve hold violations associated with the race condition, wherein the processing of the initial FinFET design is based on the delay increase.
摘要:
A method and apparatus is presented that provides mobility enhancement in the channel region of a transistor. In one embodiment, a channel region (18) is formed over a substrate that is bi-axially stressed. Source (30) and drain (32) regions are formed over the substrate. The source and drain regions provide an additional uni-axial stress to the bi-axially stressed channel region. The uni-axial stress and the bi-axially stress are both compressive for P-channel transistors and tensile for N-channel transistors. Both transistor types can be included on the same integrated circuit.
摘要:
An electronic device can include a base layer, a semiconductor layer, and a first semiconductor fin spaced apart from and overlying a semiconductor layer. In a particular embodiment, a second semiconductor fin can include a portion of the semiconductor layer. In another aspect, a process of forming an electronic device can include providing a workpiece that includes a base layer, a first semiconductor layer that overlies and is spaced apart from a base layer, a second semiconductor layer that overlies, and an insulating layer lying between the first semiconductor layer and the second semiconductor layer. The process can also include removing a portion of the second semiconductor layer to form a first semiconductor fin, and forming a conductive member overlying the first semiconductor fin.
摘要:
A semiconductor device structure uses two semiconductor layers to separately optimize N and P channel transistor carrier mobility. The conduction characteristic for determining this is a combination of material type of the semiconductor, crystal plane, orientation, and strain. Hole mobility is improved in P channel transistors when the conduction characteristic is characterized by the semiconductor material being silicon germanium, the strain being compressive, the crystal plane being (100), and the orientation being . In the alternative, the crystal plane can be (111) and the orientation in such case is unimportant. The preferred substrate for N-type conduction is different from the preferred (or optimum) substrate for P-type conduction. The N channel transistors preferably have tensile strain, silicon semiconductor material, and a (100) plane. With the separate semiconductor layers, both the N and P channel transistors can be optimized for carrier mobility.
摘要:
An interconnect overlies a semiconductor device substrate (10). In one embodiment, a conductive barrier layer overlies a portion of the interconnect, a passivation layer (92) overlies the conductive barrier layer and the passivation layer (92) has an opening that exposes portions of the conductive barrier layer (82). In an alternate embodiment a passivation layer (22) overlies the interconnect, the passivation layer (22) has an opening (24) that exposes the interconnect and a conductive barrier layer (32) overlies the interconnect within the opening (24).
摘要:
A dual inlaid copper interconnect structure uses a plasma enhanced nitride (PEN) bottom capping layer and a silicon rich silicon oxynitride intermediate etch stop layer. The interfaces (16a, 16b, 20a, and 20b) between these layers (16 and 20) and their adjacent dielectric layers (18 and 22) are positioned in the stack (13) independent of the desired aspect ratio of trench openings of the copper interconnect in order to improve optical properties of the dielectric stack (13). Etch processing is then used to position the layers (16) and (20) at locations within the inlaid structure depth that result in one or more of reduced DC leakage current, improved optical performance, higher frequency of operation, reduced cross talk, increased flexibility of design, or like improvements.
摘要:
A copper interconnect polishing process begins by polishing (17) a bulk thickness of copper (63) using a first platen. A second platen is then used to remove (19) a thin remaining interfacial copper layer to expose a barrier film (61). Computer control (21) monitors polish times of the first and second platen and adjusts these times to improve wafer throughput. One or more platens and/or the wafer is rinsed (20) between the interfacial copper polish and the barrier polish to reduce slurry cross contamination. A third platen and slurry is then used to polish away exposed portions of the barrier (61) to complete polishing of the copper interconnect structure. A holding tank that contains anti-corrosive fluid is used to queue the wafers until subsequent scrubbing operations (25). A scrubbing operation (25) that is substantially void of light is used to reduce photovoltaic induced corrosion of copper in the drying chamber of the scubber.
摘要:
A copper interconnect polishing process begins by polishing (17) a bulk thickness of copper (63) using a first platen. A second platen is then used to remove (19) a thin remaining interfacial copper layer to expose a barrier film (61). Computer control (21) monitors polish times of the first and second platen and adjusts these times to improve wafer throughput. One or more platens and/or the wafer is rinsed (20) between the interfacial copper polish and the barrier polish to reduce slurry cross contamination. A third platen and slurry is then used to polish away exposed portions of the barrier (61) to complete polishing of the copper interconnect structure. A holding tank that contains anti-corrosive fluid is used to queue the wafers until subsequent scrubbing operations (25). A scrubbing operation (25) that is substantially void of light is used to reduce photovoltaic induced corrosion of copper in the drying chamber of the scrubber.
摘要:
A method for forming a dual-gated Semiconductor-On-Insulator (SOI) field effect transistor for integrated circuits includes the formation of a gate/oxide/channel/oxide/gate stack on top of an insulating layer. The process begins with the formation of a first gate electrode and first oxide layer on an insulating layer. Then, a seed hole in the insulating layer is formed exposing the underlying substrate. This is followed by the epitaxial lateral overgrowth (ELO) of monocrystalline silicon, for example, from the seed hole to on top of the first oxide layer. This monocrystalline layer forms the device channel. A second oxide and second gate electrode layer are then grown and deposited, respectively. Subsequent etch steps employing sidewall spacers are then employed to form a multilayered stack having self-aligned first and second gate electrodes. Sidewall seed holes are then used to epitaxially grow monocrystalline source and drain regions from the channel. In-situ doping can be provided to form a lightly doped source (LDS) and drain (LDD) structure with vertically displaced source and drain contacts.