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Robert Chau Patents
Inventor:
Chau; Robert
Address:
Beaverton, OR
No. of patents:
27
Patents:




Patent Number Title Of Patent Date Issued
7427538 Semiconductor on insulator apparatus and method September 23, 2008
A method and apparatus for producing a relatively thin, relatively uniform semiconductor layer which has improved carrier mobility. In an embodiment, a lattice-matched insulator layer is formed on a semiconductor substrate, and a lattice-matched semiconductor layer is formed on the i
7422971 Process for ultra-thin body SOI devices that incorporate EPI silicon tips and article made there September 9, 2008
The invention relates to a transistor that includes an ultra-thin body epitaxial layer that forms an embedded junction with a channel that has a length dictated by an undercut under the gate stack for the transistor. The invention also relates to a process of forming the transistor and t
7420254 Semiconductor device having a metal gate electrode September 2, 2008
A method for making a semiconductor device is described. That method comprises forming a dielectric layer on a substrate, and forming an impurity containing metal layer on the dielectric layer. A metal gate electrode is then formed from the impurity containing metal layer. Also descr
7348284 Non-planar pMOS structure with a strained channel region and an integrated strained CMOS flow March 25, 2008
A non-planar tri-gate p-MOS transistor structure with a strained channel region and a non-planar tri-gate integrated strained complimentary metal-oxide-semiconductor (CMOS) structure are described. A relaxed Si.sub.1-x Ge.sub.x layer is formed on the silicon-on-isolator (SOI) substra
7342277 Transistor for non volatile memory devices having a carbon nanotube channel and electrically flo March 11, 2008
A transistor is described having a source electrode and a drain electrode. The transistor has at least one semiconducting carbon nanotube that is electrically coupled between the source and drain electrodes. The transistor has a gate electrode and dielectric material containing one or
7268058 Tri-gate transistors and methods to fabricate same September 11, 2007
Embodiments of the invention provide a method for effecting uniform silicon body height for silicon-on-insulator transistor fabrication. For one embodiment, a sacrificial oxide layer is disposed upon a semiconductor substrate. The oxide layer is etched to form a trench. The trench is
7223679 Transistor gate electrode having conductor material layer May 29, 2007
Various embodiments of the invention relate to a PMOS device having a transistor channel of silicon germanium material on a substrate, a gate dielectric having a dielectric constant greater than that of silicon dioxide on the channel, a gate electrode conductor material having a work
7193279 Non-planar MOS structure with a strained channel region March 20, 2007
An embodiment is a non-planar MOS transistor structure including a strained channel region. The combination of a non-planar MOS transistor structure, and in particular an NMOS tri-gate transistor, with the benefits of a strained channel yields improved transistor drive current, switc
7166505 Method for making a semiconductor device having a high-k gate dielectric January 23, 2007
A method for making a semiconductor device is described. That method includes forming on a substrate a dielectric layer that has a dielectric constant that is greater than the dielectric constant of silicon dioxide. The dielectric layer is modified so that it will be compatible with a
7145246 Method of fabricating an ultra-narrow channel semiconductor device December 5, 2006
A method of forming a nanowire is disclosed. A nanowire having a first dimension is deposited on a first dielectric layer that is formed on a substrate. A sacrificial gate stack having a sacrificial dielectric layer and a sacrificial gate electrode layer is deposited over a first region
7071064 U-gate transistors and methods of fabrication July 4, 2006
A process is described for manufacturing of non-planar multi-corner transistor structures. A fin of a semiconductor material having a mask on a top surface of the fin is formed on a first insulating layer. A second insulating layer is formed on the fin exposing a top surface of the mask,
7045073 Pre-etch implantation damage for the removal of thin film layers May 16, 2006
A method for anisotropically and selectively removing a dielectric thin film layer from a substrate layer is disclosed, wherein the dielectric layer is subjected to ion implantation prior to wet etching. This method may be applied adjacent to a structure such as a gate electrode within a
6998686 Metal-gate electrode for CMOS transistor applications February 14, 2006
Described is a CMOS transistor structure with a multi-layered gate electrode structure and a method of fabrication. The gate electrode structure has a three-layered metallic gate electrode and a polysilicon layer. The first metallic layer acts as a barrier to prevent the second metal
6974733 Double-gate transistor with enhanced carrier mobility December 13, 2005
There is disclosed an apparatus including a straining substrate, a device over the substrate including a channel, wherein the straining substrate strains the device in a direction substantially perpendicular to a direction of current flow in the channel.
6900481 Non-silicon semiconductor and high-k gate dielectric metal oxide semiconductor field effect tran May 31, 2005
A method for forming a transistor includes forming a gate dielectric layer over a portion of a semiconductor substrate, the substrate being substantially free of silicon; defining a gate electrode over a portion of the gate dielectric layer; and introducing ions into the substrate pr
6897098 Method of fabricating an ultra-narrow channel semiconductor device May 24, 2005
A method of forming a nanowire is disclosed. A nanowire having a first dimension is deposited on a first dielectric layer that is formed on a substrate. A sacrificial gate stack having a sacrificial dielectric layer and a sacrificial gate electrode layer is deposited over a first region
6890807 Method for making a semiconductor device having a metal gate electrode May 10, 2005
A method for making a semiconductor device is described. That method comprises forming a dielectric layer on a substrate, and forming an impurity containing metal layer on the dielectric layer. A metal gate electrode is then formed from the impurity containing metal layer. Also descr
6809017 Interfacial layer for gate electrode and high-k dielectric layer and methods of fabrication October 26, 2004
Method of fabricating a semiconductor device. The semiconductor device comprises a substrate, a high-k gate dielectric layer formed on the substrate, and a hydrogen-free gate electrode deposited on the high-k gate dielectric layer wherein the hydrogen-free gate electrode is conductive.
6696345 Metal-gate electrode for CMOS transistor applications February 24, 2004
Described is a CMOS transistor structure with a multi-layered gate electrode structure and a method of fabrication. The gate electrode structure has a three-layered metallic gate electrode and a polysilicon layer. The first metallic layer acts as a barrier to prevent the second metal
6667251 Plasma nitridation for reduced leakage gate dielectric layers December 23, 2003
A method of forming a dielectric layer suitable for use as the gate dielectric layer in a MOSFET includes nitridizing a thin silicon oxide film in a low power, direct plasma formed from nitrogen. A gas having a lower ionization energy than nitrogen, such as for example, helium, may be
6620713 Interfacial layer for gate electrode and high-k dielectric layer and methods of fabrication September 16, 2003
Method of fabricating a semiconductor device. The semiconductor device comprises a substrate, a high-k gate dielectric layer formed on the substrate, and a hydrogen-free gate electrode deposited on the high-k gate dielectric layer wherein the hydrogen-free gate electrode is conductive.
6617210 Method for making a semiconductor device having a high-k gate dielectric September 9, 2003
A method for making a semiconductor device is described. That method comprises forming on a substrate a dielectric layer that has a dielectric constant that is greater than the dielectric constant of silicon dioxide. An insulating layer, which is compatible with the dielectric layer and
6617209 Method for making a semiconductor device having a high-k gate dielectric September 9, 2003
A method for making a semiconductor device is described. That method comprises forming on a substrate a dielectric layer that has a dielectric constant that is greater than the dielectric constant of silicon dioxide. The dielectric layer is modified so that it will be compatible with a g
6610615 Plasma nitridation for reduced leakage gate dielectric layers August 26, 2003
A method of forming a dielectric layer suitable for use as the gate dielectric layer in a MOSFET includes nitridizing a thin silicon oxide film in a low power, direct plasma formed from nitrogen. A gas having a lower ionization energy than nitrogen, such as for example, helium, may be
6514879 Method and apparatus for dry/catalytic-wet steam oxidation of silicon February 4, 2003
A configuration of various chemical compound generators coupled to a furnace provides the environment for formation of extremely thin oxides of silicon on a wafer. Dichloroethylene is reacted with oxygen in a first heated reaction chamber and reaction products therefrom are diluted with
5856697 Integrated dual layer emitter mask and emitter trench for BiCMOS processes January 5, 1999
A new method of isolating a polysilicon emitter from the base region of a bipolar transistor, trenching the polysilicon emitter into the semiconductor substrate, and maintaining a consistent base width of a bipolar transistor independent of variations in emitter mask thicknesses is d
5488003 Method of making emitter trench BiCMOS using integrated dual layer emitter mask January 30, 1996
A new method of isolating a polysilicon emitter from the base region of a bipolar transistor, trenching the polysilicon emitter into the semiconductor substrate, and maintaining a consistent base width of a bipolar transistor independent of variations in emitter mask thicknesses is d


 
 
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