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Class 257/E21.432 - With source and drain contacts formation strictly before final gate formation, e.g., contact first technology (EPO)


Subclass of Class 257 - Active solid-state devices (e.g., transistors, solid-state diodes)
Definition: This subclass is indented under subclass E21.424. This
No. of patents: 102
Last issue date: 12/25/2007


1      
NumberTitleIssue Date
7312138Semiconductor device and method of manufacture thereof
A method of manufacturing a MOS transistor incorporating a silicon oxide film serving as a gate insulating film and containing nitrogen and a polycrystalline silicon film serving as a gate electrode and containing a dopant and arranged such that the gate electrode i...
12/25/2007
7153748Semiconductor devices and methods for fabricating the same
Semiconductor devices having an elevated contact region and methods of fabricating the same are disclosed. A disclosed semiconductor device includes a semiconductor substrate, a gate on the semiconductor substrate, spacers on sidewalls of the gate, an epitaxial laye...
12/26/2006
6673663Methods of forming field effect transistors and related field effect transistor constructions
Methods of forming field effect transistors and related field effect transistor constructions are described. A masking layer is formed over a semiconductive substrate and an opening having sidewalls is formed therethrough. The opening defines a substrate ...
01/06/2004
6548362Method of forming MOSFET with buried contact and air-gap gate structure
A method of forming MOSFET with buried contacts and air-gap gate structure is disclosed. The method comprises following steps firstly, a gate is formed of pad oxide layer and a nitride layer sequentially on a silicon substrate, which has trench isolations...
04/15/2003
6544827Metal-gate field effect transistor and method for manufacturing the same
A metal gate MISFET comprises a metal gate electrode on a semiconductor substrate, a side wall insulation film, and a source-drain region which is formed on the surface of the semiconductor substrate on both sides of the side wall insulation film. Then, a...
04/08/2003
6482691Seismic imaging using omni-azimuth seismic energy sources and directional sensing
Methods of forming field effect transistors and related field effect transistor constructions are described. A masking layer is formed over a semiconductive substrate and an opening having sidewalls is formed therethrough. The opening defines a substrate ...
11/19/2002
6479858Method and apparatus for a semiconductor device with adjustable threshold voltage
The present invention provides a semiconductor device with a channel length of approximately 0.05 microns. A semiconductor device according to the present invention, and a method for producing such a semiconductor device, comprises a control gate, a first...
11/12/2002
6475852Method of forming field effect transistors and related field effect transistor constructions
Methods of forming field effect transistors and related field effect transistor constructions are described. A masking layer is formed over a semiconductive substrate and an opening having sidewalls is formed therethrough. The opening defines a substrate ...
11/05/2002
6475874Damascene NiSi metal gate high-k transistor
A method for implementing a self-aligned low temperature metal silicide gate is achieved by confining amorphous silicon within a recess overlying a channel and annealing to cause the amorphous silicon with its overlying low temperature silicidation metal ...
11/05/2002
6472260Methods of forming field effect transistors and related field effect transistor constructions
Methods of forming field effect transistors and related field effect transistor constructions are described. A masking layer is formed over a semiconductive substrate and an opening having sidewalls is formed therethrough. The opening defines a substrate ...
10/29/2002
6429110MOSFET with both elevated source-drain and metal gate and fabricating method
A method of forming a transistor and a semiconductor-metal-oxide transistor. The method at least includes provides a substrate; covers the substrate by a doped amorphous polysilicon layer and a barrier layer in sequence, and removes part of the barrier la...
08/06/2002
6413823Methods of forming field effect transistors
Methods of forming field effect transistors and related field effect transistor constructions are described. A masking layer is formed over a semiconductive substrate and an opening having sidewalls is formed therethrough. The opening defines a substrate ...
07/02/2002
6410967Transistor having enhanced metal silicide and a self-aligned gate electrode
A transistor and a method for making a transistor are described. A metal layer is formed upon a semiconductor substrate, and a masking layer is formed upon the metal layer. The masking layer is patterned to form an opening therein, and portions of the met...
06/25/2002
6406957Methods of forming field effect transistors and related field effect transistor constructions
Methods of forming field effect transistors and related field effect transistor constructions are described. A masking layer is formed over a semiconductive substrate and an opening having sidewalls is formed therethrough. The opening defines a substrate ...
06/18/2002
6400002Methods of forming field effect transistors and related field effect transistor constructions
Methods of forming field effect transistors and related field effect transistor constructions are described. A masking layer is formed over a semiconductive substrate and an opening having sidewalls is formed therethrough. The opening defines a substrate ...
06/04/2002
6344382Methods of forming field effect transistors and related field effect transistor constructions
Methods of forming field effect transistors and related field effect transistor constructions are described. A masking layer is formed over a semiconductive substrate and an opening having sidewalls is formed therethrough. The opening defines a substrate ...
02/05/2002
6342414Damascene NiSi metal gate high-k transistor
A method for implementing a self-aligned low temperature metal silicide gate is achieved by confining a low temperature silicidation metal within a recess overlying a channel and annealing to cause the low temperature silicidation metal and its overlying ...
01/29/2002
6335234Methods of forming field effect transistors and related field effect transistor constructions
Methods of forming field effect transistors and related field effect transistor constructions are described. A masking layer is formed over a semiconductive substrate and an opening having sidewalls is formed therethrough. The opening defines a substrate ...
01/01/2002
6335246Methods of forming field effect transistors and related field effect transistor constructions
Methods of forming field effect transistors and related field effect transistor constructions are described. A masking layer is formed over a semiconductive substrate and an opening having sidewalls is formed therethrough. The opening defines a substrate ...
01/01/2002
6319807Method for forming a semiconductor device by using reverse-offset spacer process
A method for forming semiconductor devices is disclosed. The method of the present invention includes providing a semiconductor substrate, followed by forming shallow trench isolation (STI) process, and then a dummy gate is formed by silicon nitride layer...
11/20/2001
6287953Minimizing transistor size in integrated circuits
A method for fabricating a field effect transistor (FET) in and on a semiconductor substrate with local interconnects to permit the formation of minimal space between gate and the local interconnects by fabricating the source and drain of the FET and the ...
09/11/2001
6281101Process of forming metal silicide interconnects
A process for forming a metal silicide interconnect includes applying a layer of polysilicon over a semiconductor layer. A layer of amorphous silicon is formed over the layer of polysilicon followed by a layer of metal, such as titanium, over the layer of...
08/28/2001
6265272Method of fabricating a semiconductor device with elevated source/drain regions
A fabrication process of forming a semiconductor device with elevated source/drain regions on a substrate is disclosed. The elevated portion of the source/drain regions is provided as a reactant for a later metallization process, thereby preventing the co...
07/24/2001
6228729MOS transistors having raised source and drain and interconnects
A process for fabricating a semiconductor device comprising a gate electrode, a raised source, a raised drain and an interconnect inlaid into an isolation region. A semiconductor device is fabricated by a process comprising the following steps: forming se...
05/08/2001
6222240Salicide and gate dielectric formed from a single layer of refractory metal
An integrated circuit fabrication process is provided for forming a metal oxide gate dielectric and salicide structures from a unitary layer of refractory metal. The refractory metal layer is placed upon a silicon-based substrate before the formation of t...
04/24/2001
6218710Method to ensure isolation between source-drain and gate electrode using self aligned silicidation
A MOSFET device fabricated by a method that reduces, the risk of gate to source and drain bridging, has been developed. The process features fabricating a polysilicon structure, which is wider at the top than at the bottom, with a source and drain region,...
04/17/2001
6218690Transistor having reverse self-aligned structure
A reverse self-aligned field effect transistor and a method of fabricating the same are provided. The reverse self-aligned transistor includes a source formed on an active region of a semiconductor substrate and a drain formed on the active region of the ...
04/17/2001
6211025Method of making elevated source/drain using poly underlayer
A transistor and a method of making the same are provided. The transistor includes a substrate and a gate dielectric layer positioned on the substrate that has first and second sidewall spacers. A gate electrode is positioned on the gate dielectric layer ...
04/03/2001
6204137Method to form transistors and local interconnects using a silicon nitride dummy gate technique
A new method of forming MOS transistors has been achieved. A pad oxide layer is grown. A silicon nitride layer is deposited. Trenches are etched for planned STI. A trench liner is grown inside of the trenches. A trench oxide layer is deposited filling the...
03/20/2001
6146954Minimizing transistor size in integrated circuits
A method for fabricating a field effect transistor (FET) in and on a semiconductor substrate with local interconnects to permit the formation of minimal insulating space between polysilicon gate and the local interconnects by fabricating the source and dr...
11/14/2000
6143593Elevated channel MOSFET
The present invention provides a method of producing a semiconductor device (e.g., a Metal Oxide Semiconductor Field Effect Transistor (MOSFET)) with a gate length less than 0.25 microns using standard process techniques arranged in an unstandardized proc...
11/07/2000
6127712Mosfet with buried contact and air-gap gate structure
A MOSFET with buried contacts and air-gap gate structure is disclosed. The MOSFET comprises trench isolation regions on a silicon substrate. A poly gate on the active region is formed of a gate dielectric layer and a polysilicon layer, wherein the polysil...
10/03/2000
6127233Lateral MOSFET having a barrier between the source/drain regions and the channel region
A lateral MOSFET (100) and a method for making the same. A two layer raised source/drain region (106) is located adjacent a gate structure (112). The first layer (106a) of the raised source drain is initially doped p-type and the second layer (106b) of th...
10/03/2000
6114208Method for fabricating complementary MOS transistor
A method for fabricating complementary metal-oxide-semiconductor (CMOS) devices and circuits resulting therefrom are provided. The method includes forming the source and drain regions of the CMOS device by out-diffusion of ions injected into a conductive ...
09/05/2000
6100161Method of fabrication of a raised source/drain transistor
A method of fabricating a transistor, comprising the following steps. A silicon semiconductor substrate having a pad oxide portion within an active area is provided. A polysilicon layer is deposited over the silicon semiconductor substrate and over the pa...
08/08/2000
6090691Method for forming a raised source and drain without using selective epitaxial growth
A method for forming a raised source and drain structure without using selective epitaxial silicon growth. A semiconductor substrate is provided having one or more gate areas covered by dielectric structures. Doped polysilicon structures are adjacent to t...
07/18/2000
6051473Fabrication of raised source-drain transistor devices
A process in accordance with the invention enables the manufacturability of raised source-drain MOSFETs. In accordance with the invention, a raised source-drain material, having a window therein, is formed over the substrate. A gate oxide and window sidew...
04/18/2000
6046098Process of forming metal silicide interconnects
A process for forming a metal suicide interconnect includes applying a layer of polysilicon over a semiconductor layer. A layer of amorphous silicon is formed over the layer of polysilicon followed by a layer of metal, such as titanium, over the layer of ...
04/04/2000
6025232Methods of forming field effect transistors and related field effect transistor constructions
Methods of forming field effect transistors and related field effect transistor constructions are described. A masking layer is formed over a semiconductive substrate and an opening having sidewalls is formed therethrough. The opening defines a substrate ...
02/15/2000
6008097MOS transistor of semiconductor device and method of manufacturing the same
The present invention relates to a MOS transistor of semiconductor device and method of manufacturing the same and, in particular, to MOS a transistor of semiconductor device and method of manufacturing the same which can reduce asymmetry of drain current...
12/28/1999
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