Abstract:
PROBLEM TO BE SOLVED: To provide a CMOS circuit which includes an n-FET gate stack having a gate dielectric and a metal gate conductor, and a p-FET gate stack having a gate dielectric layer and a silicon-containing gate conductor. SOLUTION: In the high-performance complementary metal oxide film semiconductor (CMOS) circuit, each semiconductor unit has at least the first gate stack and the second gate stack. The first gate stack is disposed on a first device region (e.g., n-FET device region) in a semiconductor board, and at least includes a gate dielectric layer 14, a metal gate conductor 16, and a silicon-containing gate conductor 18 that are laminated in increasing order. The second gate stack is disposed on a second device region (e.g., p-FET device region) in the semiconductor board; and at least includes a gate dielectric layer, and a silicon-containing gate conductor that are laminated in increasing order. The first and second gate stacks can be formed on the semiconductor board by a variety of integrated methods. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method and a device, realizing a strained Si film with reduced number of defects. SOLUTION: The strained Si film is formed by selectively growing a fin arranged in a perpendicular direction to the surface of a non-conductive substrate or Si on the side face of a relaxed SiGe block. Next, a dielectric gate comprising an oxide or a high k material or a combination thereof, for example, can be formed on the surface of the strained Si film. Further, by removing the relaxed SiGe block without substantially influencing the stress of the strained Si film, a second gate oxide can be formed on the surface previously occupied by the relaxed SiGe block. Thus, a MOSFET and a finFET of a single gate, double gate, or more gates can be formed, with the semiconductor device having the strained Si fin arranged in the perpendicular direction on the non-conductive substrate, with a channel having reduced number of defects or reduced dimension or both. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method for forming a uniform layer structure, including an ultra-thin layer of amorphous silicon and a thermal oxide thereof. SOLUTION: In one side surface, the present invention is a method for forming the nano-laminate of an oxidized silicon on a substrate. In the other side surface, the invention is a method for forming a patterned hard mask on the substrate. The patterned hard mask includes the nano-laminate of a silicon and the oxidized silicon. The methods are characterized by the oxidization of an amorphous silicon layer using atomic oxygen. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method for protecting shallow trench isolation (STI) during an oxide etching process. SOLUTION: This method for protecting the semiconductor shallow trench isolation (STI) oxide 4 from the etching comprises: a step of, if necessary, making the top face of the STI oxide 4 lower than the top face of an adjacent silicon activated region 3; a step of depositing a nitride liner 5 on the STI oxide 4 and the adjacent silicon activated region 3 by a method effective for delimiting a concave portion above the STI oxide 4; a step of filling the concave portion with a protecting film 6; and a step of removing the nitride liner from the adjacent activated region. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To prevent the depletion of the gate polysilicon of a CMOS by a gate electrode structure composed of a metal dielectric stack containing a large volume of potassium. SOLUTION: A semiconductor structure is provided by including an n-FET device and a p-FET device. At least either of the devices includes a gate electrode stack having a thin film of a silicon-containing electrode, i.e., polysilicon electrode and a first metal on the silicon-containing electrode. The other of the devices includes a gate electrode stack not having a thin film of a silicon-containing electrode but at least having a first metal gate. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of forming a polycrystalline silicon having hyperfine particle sizes. SOLUTION: The method of forming a polycrystalline silicon having hyperfine particle sizes employs a differential heating of upper and lower surfaces of a substrate of a CVD apparatus, in which the lower surface of the substrate receives considerably more power than the upper surface, preferably more than 75% of the entire power; and in which the substrate is maintained during deposition at a temperature higher than 50°C above 550°C of crystallization temperature of silicon. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing a double-gate type field effect transistor (DGFET) of a self-aligning planar type with a front gate and a back gate aligned. SOLUTION: A method of manufacturing this double-gate type field effect transistor (DGFET) comprises: a process of preparing a stacked double-gate structure provided with at least a back gate 14, a back gate dielectric provided on the back gate 14, a channel layer provided on the back gate dielectric, a front gate dielectric provided on the channel layer, and a front gate 22 provided on the front gate dielectric; a process of patterning the front gate 22 of the stacked double-gate structure; a process of forming a sidewall spacer on the exposed sidewall of the pattered front gate 22; and a process of forming a carrier depletion zone at a part of the back gate and allowing the carrier depletion zone to align the back gate to the front gate. COPYRIGHT: (C)2004,JPO&NCIPI
Abstract:
Methods for semiconductor fabrication include forming (304) a well in a semiconductor substrate. A pocket is formed (306) within the well, the pocket having an opposite doping polarity as the well to provide a p-n junction between the well and the pocket. Defects are created (310) at the p-n junction such that a leakage resistance of the p-n junction is decreased.
Abstract:
In one embodiment, hexagonal tiles encompassing a large are divided into three groups, each containing one-third of all hexagonal tiles that are disjoined among one another. Openings for the hexagonal tiles in each group (01, 02, 03) are formed in a template layer (2OA, 2OB, 20C), and a set of self-assembling block copolymers is applied and patterned within each opening. This process is repeated three times to encompass all three groups, resulting in a self-aligned pattern extending over a wide area. In another embodiment, the large area is divided into rectangular tiles of two non-overlapping and complementary groups. Each rectangular area has a width less than the range of order of self-assembling block copolymers. Self-assembled self- aligned line and space structures (4OA, 5OA; 4OB, 5OB; 4OC, 50C) are formed in each group in a sequential manner so that a line and space pattern is formed over a large area extending beyond the range of order.
Abstract:
A method of fabricating a semiconductor device structure, includes: providing a substrate (1), providing an electrode (6) on the substrate (1), forming a recess (12) in the electrode (6), the recess having an opening, disposing a small grain semiconductor material (17) within the recess, covering the opening to contain the small grain semiconductor material, within the recess, and then annealing the resultant structure.