Abstract:
FinFET devices and methods of forming the same are disclosed. One FinFET device includes a substrate with first and second fins in a first region and third and fourth fins in a second region, and first to fourth gates respectively across the first to fourth fins. The first end sidewall of the first gate is faced to the second end sidewall of the second gate, and a first opening is formed between the first and second end sidewalls. The third end sidewall of the third gate is faced to the fourth end sidewall of the fourth gate, and a second opening is formed between the third and fourth end sidewalls. The first and second regions have different pattern densities, and the included angle between the sidewall of the first opening and the substrate is different from the included angle between the sidewall of the second opening and the substrate.
Abstract:
A method of manufacturing a Fin-FET device includes forming a plurality of fins in a substrate, which the substrate includes a center region and a periphery region surrounding the center region. A gate material layer is deposited over the fins, and the gate material layer is etched with an etching gas to form gates, which the etching gas is supplied at a ratio of a flow rate at the center region to a flow rate at the periphery region in a range from 0.33 to 3.
Abstract:
A fin-like field-effect transistor (Fin-FET) device includes a substrate, a fin structure disposed on the substrate, and an isolation structure disposed adjacent to the fin structure. The fin structure includes a recessed structure, which a bottom of the recessed structure is below a top surface of the isolation structure.
Abstract:
A FinFET includes a substrate, a fin structure, a dielectric layer, a metal gate, two spacers, a source and a drain. The fin structure is disposed on the substrate. The dielectric layer is disposed on the fin structure and covers two opposite side surfaces of the fin structure. The dielectric layer includes two first portions protruding from the side surfaces of the fin structure, such that two opposite first recesses are formed in the dielectric layer. The metal gate is disposed on a second portion of the dielectric layer which is sandwiched between the first portions. The spacers are disposed on the first portions of the dielectric layer and protrude from the first portions of the dielectric layer respectively, such that two second recesses are formed in the spacers. The source and drain are respectively disposed in the first recesses and the second recesses on the substrate.
Abstract:
A fin field effect transistor (FinFET) device structure and method for forming FinFET device structure is provided. The FinFET device structure includes a substrate and a first fin structure and a second fin structure extending above the substrate. The FinFET device structure also includes a first transistor formed on the first fin structure and a second transistor formed on the second fin structure. The FinFET device structure further includes an inter-layer dielectric (ILD) structure formed in an end-to-end gap between the first transistor and the second transistor, and the end-to-end gap has a width in a range from about 20 nm to about 40 nm.
Abstract:
Structures and formation methods of a semiconductor device structure are provided. The semiconductor device structure includes a gate stack over a semiconductor substrate and a protection element over the gate stack. The protection element has an upper portion and a lower portion between the upper portion and the gate stack, and the upper portion is wider than the lower portion. The semiconductor device structure also includes a spacer element over a side surface of the protection element and a sidewall of the gate stack. The semiconductor device structure further includes a conductive contact electrically connected to a conductive feature over the semiconductor substrate.
Abstract:
Embodiments for forming a fin field effect transistor (FinFET) device structure are provided. The FinFET device structure includes a fin structure extending above a substrate and a gate dielectric layer formed over the fin structure. The FinFET device structure also includes a gate electrode formed on the gate dielectric layer. The FinFET device structure further includes a number of gate spacers formed on sidewalls of the gate electrode. The gate spacers are in direct contact with the fin structure.
Abstract:
A device includes a fin protruding from a semiconductor substrate; a gate stack over and along a sidewall of the fin; a gate spacer along a sidewall of the gate stack and along the sidewall of the fin; an epitaxial source/drain region in the fin and adjacent the gate spacer; and a corner spacer between the gate stack and the gate spacer, wherein the corner spacer extends along the sidewall of the fin, wherein a first region between the gate stack and the sidewall of the fin is free of the corner spacer, wherein a second region between the gate stack and the gate spacer is free of the corner spacer.
Abstract:
A method includes forming a dummy gate stack, etching the dummy gate stack to form an opening, depositing a first dielectric layer extending into the opening, and depositing a second dielectric layer on the first dielectric layer and extending into the opening. A planarization process is then performed to form a gate isolation region including the first dielectric layer and the second dielectric layer. The dummy gate stack is then removed to form trenches on opposing sides of the gate isolation region. The method further includes performing a first etching process to remove sidewall portions of the first dielectric layer, performing a second etching process to thin the second dielectric layer, and forming replacement gates in the trenches.
Abstract:
In an embodiment, a device includes: an isolation region; nanostructures protruding above a top surface of the isolation region; a gate structure wrapped around the nanostructures, the gate structure having a bottom surface contacting the isolation region, the bottom surface of the gate structure extending away from the nanostructures a first distance, the gate structure having a sidewall disposed a second distance from the nanostructures, the first distance less than or equal to the second distance; and a hybrid fin on the sidewall of the gate structure.