Abstract:
A local interconnect structure is provided that includes a gate- directed local interconnect (435) coupled to an adjacent gate layer (425) through a diffusion-directed local interconnect (445).
Abstract:
Three-dimensional germanium-based semiconductor devices formed on globally or locally isolated substrates are described. For example, a semiconductor device includes a semiconductor substrate. An insulating structure is disposed above the semiconductor substrate. A three-dimensional germanium-containing body is disposed on a semiconductor release layer disposed on the insulating structure. The three-dimensional germanium-containing body includes a channel region and source/drain regions on either side of the channel region. The semiconductor release layer is under the source/drain regions but not under the channel region. The semiconductor release layer is composed of a semiconductor material different from the three-dimensional germanium-containing body. A gate electrode stack surrounds the channel region with a portion disposed on the insulating structure and laterally adjacent to the semiconductor release layer.
Abstract:
Techniques are disclosed for forming transistor devices having reduced parasitic contact resistance relative to conventional devices. In some example embodiments, the techniques can be used to implement the contacts of MOS transistors of a CMOS device, where an intermediate III-V semiconductor material layer is provided between the p-type and n-type source/drain regions and their respective contact metals to significantly reduce contact resistance. The intermediate III-V semiconductor material layer may have a small bandgap (e.g., lower than 0.5eV) and/or otherwise be doped to provide the desired conductivity. The techniques can be used on numerous transistor architectures (e.g., planar, finned, and nanowire transistors), including strained and unstrained channel structures.
Abstract:
A common cut mask is employed to define a gate pattern and a local interconnect pattern so that local interconnect structures and gate structures are formed with zero overlay variation relative to one another. A local interconnect structure may be laterally spaced from a gate structure in a first horizontal direction, and contact another gate structure in a second horizontal direction that is different from the first horizontal direction. Further, a gate structure may be formed to be collinear with a local interconnect structure that adjoins the gate structure. The local interconnect structures and the gate structures are formed by a common damascene processing step so that the top surfaces of the gate structures and the local interconnect structures are coplanar with each other.
Abstract:
A technique comprising: forming laterally-extending switching circuitry of a device for controlling an overlying laterally-extending array of pixel conductors (11) of said device; forming an electrically conductive laterally-extending patterned screen (8) over said switching circuitry via a first insulating region (7), said patterned screen (8) defining holes (28) for receiving conductive interlayer connects (10) between said switching circuitry and said array of pixel conductors (11); and thereafter: forming a second insulating region (9) over said patterned screen (8), forming said array of pixel conductors (11) over said patterned screen (8) via said second insulating region (9) for capacitative coupling with said patterned screen (8), forming through holes through at least said first and second insulating regions at the locations of said holes (28) defined in said patterned screen, and forming said interlayer connects (10) in said through holes; and wherein said patterned screen (8) is configured such that the area of overlap between the array of pixel conductors (11) and underlying conductive elements (8) is substantially constant within a range of lateral positions of the pixel conductors (11) relative to the switching circuitry, which range is greater in a first direction than 40% of the pitch (P) of the pixel conductors (11) in said first direction.
Abstract:
A semiconductor device which includes fins of a semiconductor material formed on a semiconductor substrate and then a gate electrode formed over and in contact with the fins. An insulator layer is deposited over the gate electrode and the fins. A trench opening is then etched in the insulator layer. The trench opening exposes the fins and extends between the fins. The fins are then silicided through the trench opening. Then, the trench opening is filled with a metal in contact with the silicided fins to form a local interconnect connecting the fins.