Abstract:
A method of manufacturing a semiconductor device may include forming a fin on an insulator and forming a gate oxide on sides of the fin. The method may also include forming a gate structure over the fin and the gate oxide and forming a dielectric layer adjacent the gate structure. Material in the gate structure may be removed to define a gate recess. A width of a portion of the fin below the gate recess may be reduced, and a metal gate may be formed in the gate recess.
Abstract:
A double-semiconductor device includes a substrate, an insulating layer, a fin and a gate. The insulating layer is formed on the substrate and the fin is formed on the insulating layer. The fin has a number of side surfaces, a top surface and a bottom surface. The gate is formed on the insulating layer and surrounds the top surface, bottom surface and the side surfaces of the fin in the channel region of the semiconductor device. Surrounding the fin with gate material results in an increased total channel width and more flexible device adjustment margins.
Abstract:
A narrow channel FinFET is described herein with a narrow channel width. A protective layer may be formed over the narrow channel, the protective layer being wider than the narrow channel.
Abstract:
A method of forming a fin field effect transistor includes forming a fin and forming a source region on a first end of the fin and a drain region on a second end of the fin. The method further includes forming a dummy gate with a first semi-conducting material in a first pattern over the fin and forming a dielectric layer around the dummy gate. The method also includes removing the first semi-conducting material to leave a trench in the dielectric layer corresponding to the first pattern, thinning a portion of the fin exposed within the trench, and forming a metal gate within the trench.
Abstract:
A memory device includes a conductive structure, a number of dielectric layers and a control gate. The dielectric layers are formed around the conductive structure and the control gate is formed over the dielectric layers. A portion of the conductive structure functions as a drain region for the memory device and at least one of the dielectric layers functions as a charge storage structure for the memory device. The dielectric layers may include oxide-nitride-oxide layers.
Abstract:
A semiconductor device and method of manufacture. The semiconductor device having a silicide source and a silicide drain; a semiconductor body disposed between the source and the drain; a gate electrode disposed over the body and defining a channel interposed between the source and the drain; and a gate dielectric made from a high-K material and separating the gate electrode and the body.
Abstract:
A FinFET includes a fin formed on an insulating layer and a first gate material layer formed proximate to sides of the fin. The FinFET further includes a protective layer formed above the first gate material layer and the fin, and a second gate material layer formed above the protective layer and the fin. The second gate material layer may be formed into a gate for the fin that may be biased independently of gate(s) formed from the first gate material layer, thus providing additional design flexibility in controlling the potential in the fin during on/off switching of the FinFET.
Abstract:
A method of manufacturing a MOSFET type semiconductor device includes planarizing a gate material layer that is deposited over a channel. The planarization is performed in a multi-step process that includes an initial “rough” planarization and then a “fine” planarization. The slurry used for the finer planarization may include added material that tends to adhere to low areas of the gate material.
Abstract:
A method of manufacturing a semiconductor device may include forming a fin structure on an insulator. The fin structure may include side surfaces and a top surface. The method may also include depositing a gate material over the fin structure and planarizing the deposited gate material. An antireflective coating may be deposited on the planarized gate material, and a gate structure may be formed out of the planarized gate material using the antireflective coating.
Abstract:
A double-gate vertical MOSFET transistor is described along with an associated fabrication method. The MOSFET transistor is configured with separate gates on each side of a vertical source-drain channel that is capped by an insulation layer. The fabrication process generally comprises forming a silicon-insulator stack having a silicon fin (channel) capped with insulation. The opposing ends of the silicon-insulator stack being configured with areas capable of receiving source and drain contacts. The vertical surfaces of the silicon fin are insulated prior to the formation of gate electrodes adjacent the two opposing sides of the silicon-insulator stack. By way of example, the gate electrodes are formed by depositing a thick layer of conductive gate material over the substrate and then removing the adjoining upper portion, such as by polishing. Portions of each gate electrode are configured with areas capable of receiving a gate contact.