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Class 257/E29.255 - With field effect produced by insulated gate (EPO)


Subclass of Class 257 - Active solid-state devices (e.g., transistors, solid-state diodes)
Definition: This subclass is indented under subclass E29.242. This subclass
No. of patents: 520
Last issue date: 09/23/2008


1                      
NumberTitleIssue Date
7427775Fabricating strained channel epitaxial source/drain transistors
The mobility of carriers may be increased in strained channel epitaxial source/drain transistors. Doped silicon material may be blanket deposited after removing ion implanted source/drain regions. The blanket deposition forms amorphous films over non-source/drain ar...
09/23/2008
7368793HEMT transistor semiconductor device
The semiconductor device of the present invention includes a device formation region formed on a substrate and including at least one semiconductor region, and a first electrode and a second electrode formed spaced apart from each other on the device formation regio...
05/06/2008
7339236Semiconductor device, driver circuit and manufacturing method of semiconductor device
The present invention provides a semiconductor technology capable of suppressing an increase in threshold voltage of a transistor and, also, improving a withstand voltage between a source region and a drain region. Source and drain regions of a p channel type MOS tr...
03/04/2008
7339214Methods and apparatus for inducing stress in a semiconductor device
Methods and apparatus are disclosed for selectively inducing stress in a semiconductor device, wherein a first region of a substrate is implanted so as to induce stress in a second region. An electrical device is formed at least partially in the second region, where...
03/04/2008
7339215Transistor device containing carbon doped silicon in a recess next to MDD to create strain in channel
A method (100) of forming a transistor includes forming a gate structure (106, 108) over a semiconductor body and forming recesses (112) substantially aligned to the gate structure in the semiconductor body. Carbon-doped silicon is then epitaxia...
03/04/2008
7329914Charge trapping memory device with two separated non-conductive charge trapping inserts and method for making the same
A charge trapping memory device with two separated non-conductive charge trapping inserts is disclosed. The charge trapping memory device has a silicon substrate with two junctions. A gate oxide (GOX) is formed on top of the silicon substrate and between the two jun...
02/12/2008
7323752ESD protection circuit with floating diffusion regions
This invention discloses an electrostatic discharge (ESD) protection circuit that comprises a substrate of a predetermined type, at least one MOS transistor being coupled to a pad of an integrated circuit for dissipating an ESD current from the pad during an ESD eve...
01/29/2008
7279745Semiconductor device
In a semiconductor device of the present invention, an N-type epitaxial layer 2 is deposited on a P-type substrate 1. In the epitaxial layer 2, a P-type diffusion layer 5 to be used as a back gate region is formed. An N-type diffusion lay...
10/09/2007
7268399Enhanced PMOS via transverse stress
In the present invention, a PMOS device comprises a channel region formed in {100} silicon with first and second source/drain region disposed on either side of the channel region. The channel region is oriented such that a current flow between the source/drain regio...
09/11/2007
7268398ESD protection cell with active pwell resistance control
In an NMOS device, the turn-on voltage or the triggering voltage is reduced by adding an NBL connected to an n-sinker and contacted through an n+ region, which is connected to a bias voltage. The bias voltage may be provided by the drain contact or by a separate bia...
09/11/2007
7259434Highly reliable amorphous high-k gate oxide ZrO2
A gate oxide and method of fabricating a gate oxide that produces a more reliable and thinner equivalent oxide thickness than conventional SiO2 gate oxides are provided. Also shown is a gate oxide with a conduction band offset in a range of approximately ...
08/21/2007
7256432Field-effect transistor
An electric-field control electrode (5) is formed between a gate electrode (2) and a drain electrode (3). A multilayered film including a SiN film (21) and a SiO2 film (22) is formed below the electric-field control elec...
08/14/2007
7217963Semiconductor integrated circuit device
In a low power consumption mode in which prior data is retained upon power shutdown, the return speed thereof is increased. While use of an existent data retaining flip-flop may be considered, this is not preferred since it increases area overhead such as enlargemen...
05/15/2007
7176526Semiconductor device, method for producing the same, and information processing apparatus
A semiconductor device 1910 comprises a semiconductor substrate 100 including an isolation region 101 and an active region 102, a gate electrode 104 provided on the active region 102 via a gate insulating film 103, pa...
02/13/2007
7160769Channel orientation to enhance transistor performance
P channel transistors are formed in a semiconductor layer that has a (110) surface orientation for enhancing P channel transistor performance, and the N channel transistors are formed in a semiconductor layer that has a (100) surface orientation. To further provide ...
01/09/2007
7138690Shielding structure for use in a metal-oxide-semiconductor device
An MOS device is formed comprising a semiconductor layer of a first conductivity type, a first source/drain region of a second conductivity type formed in the semiconductor layer, and a second source/drain region of the second conductivity type formed in the semicon...
11/21/2006
7078761Nonvolatile memory solution using single-poly pFlash technology
A single-poly two-transistor PMOS memory cell for multiple-time programming applications includes a PMOS floating gate transistor sharing a drain/source P+ diffusion region with a PMOS select gate transistor all formed within a first n-well. A control plate for the ...
07/18/2006
6699760Method for growing layers of group III-nitride semiconductor having electrically passivated threading defects
One method includes epitaxially growing a layer of group III-nitride semiconductor under growth conditions that cause a growth surface to be rough. The method also includes performing an epitaxial growth of a second layer of group III-nitride semiconducto...
03/02/2004
6696323Method of manufacturing semiconductor device having trench filled up with gate electrode
In a semiconductor device, a p-type base region is provided in an n- -type substrate to extend from a principal surface of the substrate in a perpendicular direction to the principal surface. An n+ -type source region extends in the ...
02/24/2004
6690042Metal oxide semiconductor heterostructure field effect transistor
A method and structure for producing nitride based heterostructure devices having substantially lower reverse leakage currents and performance characteristics comparable to other conventional devices. The method and structure include placing one or more l...
02/10/2004
6686245Vertical MOSFET with asymmetric gate structure
A semiconductor fabrication process and structure in which a semiconductor channel structure (140) having first and second major surfaces perpendicular to a semiconductor substrate (102) is formed overlying and electrically isolated from the substrate (10...
02/03/2004
6683345Semiconductor device and method for making the device having an electrically modulated conduction channel
A semiconductor device having a conduction channel which is electrically modulated. A trench structure is formed within a substrate enclosing a diffusion region. The trench structure isolates the devices formed within the diffusion region from the remaini...
01/27/2004
6680503Field-effect transistor structure with an insulated gate
The field-effect transistor has an insulated gate, a source electrode, a drain electrode, and an inversion channel between the source and drain electrodes and underneath the gate electrode. The gate electrode is fabricated from a material which does not h...
01/20/2004
6680244Method for manufacturing semiconductor device
A method for manufacturing a semiconductor device comprises the steps of forming a gate oxide film on a surface of a semiconductor substrate, subjecting the gate oxide film to a nitriding treatment, forming a gate electrode film over the surface of the se...
01/20/2004
6670250MOS transistor and method for forming the same
A MOS transistor including a gate poly oxide layer formed to have different thicknesses over the entire surface of a semiconductor substrate and a method for forming the MOS transistor are provided. A gate oxide layer pattern and a gate conductive layer p...
12/30/2003
6670260Transistor with local insulator structure
A thin filmed fully-depleted silicon-on-insulator (SOI) metal oxide semiconductor field defect transistor (MOSFET) utilizes a local insulation structure. The local insulative structure includes a buried silicon dioxide region under the channel region. The...
12/30/2003
6661277Enhanced conductivity body biased PMOS driver
According to one embodiment of the present invention a method for biasing a body of a transistor. The method includes detecting a voltage applied to a terminal of a transistor and coupling a biasing voltage to the body based upon the detected voltage....
12/09/2003
6650171Low power operation mechanism and method
An apparatus and method are provided for powering a chip having at least one transistor. A voltage regulating device may apply a first voltage and a second voltage to the transistor. The voltage regulating device may include a mechanism to apply a third v...
11/18/2003
6642577Semiconductor device including power MOSFET and peripheral device and method for manufacturing the same
First and second trenches are formed on an n+ type substrate at a power MOSFET formation region and a peripheral device formation region, respectively. An n- type epitaxial film, a p type epitaxial film, and an n+ type epi...
11/04/2003
6642591Field-effect transistor
A field-effect transistor includes a silicon substrate on which is formed a channel region, a source region and a drain region. A gate insulation layer of a transition metal oxide having a perovskite structure is formed over at least the channel region, a...
11/04/2003
6639450Enhanced conductivity body biased PMOS driver
According to one embodiment of the present invention a method for biasing a body of a transistor. The method includes detecting a voltage applied to a terminal of a transistor and coupling a biasing voltage to the body based upon the detected voltage....
10/28/2003
6624045Thermal conducting trench in a seminconductor structure and method for forming the same
The invention relates to a method of forming a trench filled with a thermally conducting material in a semiconductor substrate. In one embodiment, the method includes filling a portion of the trench with a thermally conducting material and patterning a co...
09/23/2003
6617653MISFET
P-type active region 12; n-type source/drain regions 13a and 13b; gate insulating film 14 made of a thermal oxide film; gate electrode 15; source/drain electrodes 16a and 16b, are provided over a p-type SiC substrate 11. In the active region 12, p-type he...
09/09/2003
6613637Composite spacer scheme with low overlapped parasitic capacitance
A method and composition for a composite spacer with low overlapped capacitance includes a low-k dielectric spacer layer. A first spacer is deposited on a partially formed semiconductor device having a gate oxide stack, followed by a low dielectric consta...
09/02/2003
6613622Method of forming a semiconductor device and structure therefor
A semiconductor device (10, 40) is formed to have a well (19) in a substrate (11). The well and the substrate have the same doping type, for example both P-type or both N-type. Low resistance contact regions (26, 27) of a second conductivity type are form...
09/02/2003
6570239Semiconductor device having resistive element
A trench is formed in an n+ type substrate in a vertical direction from a main surface of the substrate, and a p type layer is deposited in the trench to have a recess portion. An n+ type layer is embedded in the recess portion. Acco...
05/27/2003
6528373Layered dielectric on silicon carbide semiconductor structures
A dielectric structure is disclosed for silicon carbide-based semiconductor devices. In gated devices, the structure includes a layer of silicon carbide, a layer of silicon dioxide on the silicon carbide layer, a layer of another insulating material on th...
03/04/2003
6515348Semiconductor device with FET MESA structure and vertical contact electrodes
A semiconductor device comprises one or more field effect devices (FD) having source and drain regions (5 and 6) spaced apart by a body region (3a). A gate structure (7a, 7b), preferably in a trench (4), controls a conduction channel in a portion (3b) of ...
02/04/2003
6515319Field-effect-controlled transistor and method for fabricating the transistor
An active surface with a source area, a channel area and a drain area is provided in a semiconductor substrate. Each of the areas lie adjacent to a main surface of the semiconductor substrate. At least one trench is provided in the main surface of the sem...
02/04/2003
6495407Method of making an article comprising an oxide layer on a GaAs-based semiconductor body
A novel method of forming a GaAs-based MOS structure comprises ion implantation after oxide formation, and subsequent slow heating and cooling, carried out such that essentially no interfacial defects that are detectable by high resolution transmission el...
12/17/2002
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