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Feng Q. Liu Patents
Inventor:
Liu; Feng Q.
Address:
San Jose, CA
No. of patents:
28
Patents:




Patent Number Title Of Patent Date Issued
7422516 Conductive polishing article for electrochemical mechanical polishing September 9, 2008
Embodiments of a polishing article for polishing a substrate are provided. In one embodiment, the polishing article includes an annular upper layer made of a dielectric material coupled to an annular lower layer made of a conductive material, and an annular subpad sandwiched between the
7390744 Method and composition for polishing a substrate June 24, 2008
Polishing compositions and methods for removing conductive materials and barrier materials from a substrate surface are provided. Polishing compositions are provided for removing at least a barrier material from a substrate surface by a chemical mechanical polishing process or by an
7390429 Method and composition for electrochemical mechanical polishing processing June 24, 2008
A method of processing a substrate having a conductive material layer disposed thereon is provided which includes positioning the substrate in a process apparatus and supplying a first polishing composition between to the substrate. The polishing composition comprises a first chelating
7384534 Electrolyte with good planarization capability, high removal rate and smooth surface finish for June 10, 2008
Electrolyte compositions and methods for planarizing a surface of a substrate using the electrolyte compositions are provided. In one aspect, an electrolyte composition includes one or more chelating agents, one or more corrosion inhibitors, and one or more pH adjusting agents. In an
7375023 Method and apparatus for chemical mechanical polishing of semiconductor substrates May 20, 2008
Methods and apparatus for processing substrates to improve polishing uniformity, improve planarization, remove residual material and minimize defect formation are provided. In one aspect, a method is provided for processing a substrate having a conductive material and a low dielectric
7374644 Conductive polishing article for electrochemical mechanical polishing May 20, 2008
Embodiments of a ball assembly are provided. In one embodiment, a ball assembly includes a housing, a ball, a conductive adapter and a contact element. The housing has an annular seat extending into a first end of an interior passage. The conductive adapter is coupled to a second end of
7344431 Pad assembly for electrochemical mechanical processing March 18, 2008
Embodiments of a processing pad assembly for processing a substrate are provided. The processing pad assembly includes an upper layer having a processing surface and an electrode having a top side coupled to the upper layer and a bottom side opposite the top side. A first set of holes
7323416 Method and composition for polishing a substrate January 29, 2008
Polishing compositions and methods for removing conductive materials from a substrate surface are provided. In one aspect, a method is provided for processing a substrate to remove conductive material disposed over narrow feature definitions formed in a substrate at a higher removal rate
7278911 Conductive polishing article for electrochemical mechanical polishing October 9, 2007
Embodiments of a polishing article for polishing a substrate are provided. In one embodiment, the polishing article includes a ring-shaped upper layer having a polishing surface, and a conductive layer coupled to the upper layer and forming a replaceable assembly therewith.
7232514 Method and composition for polishing a substrate June 19, 2007
Polishing compositions and methods for removing conductive materials from a substrate surface are provided. In one aspect, a composition includes an acid based electrolyte system, one or more chelating agents, one or more corrosion inhibitors, one or more inorganic or organic acid salts,
7229535 Hydrogen bubble reduction on the cathode using double-cell designs June 12, 2007
An apparatus and method for planarizing a surface of a substrate using a chamber separated into two parts by a membrane, and two separate electrolytes is provided. The embodiments of the present invention generally provide an electrochemical mechanical polishing system that reduces t
7210988 Method and apparatus for reduced wear polishing pad conditioning May 1, 2007
Embodiments of a conditioning head for in-situ conditioning and/or cleaning a processing pad of a CMP, ECMP, or other processing system are provided. In one embodiment, the conditioning head includes a brush disposed in a central cavity. A cleaning fluid is provided through the centr
7207878 Conductive polishing article for electrochemical mechanical polishing April 24, 2007
Embodiments of a polishing article for processing a substrate are provided. In one embodiment, a polishing article for processing a substrate comprises a fabric layer having a conductive layer disposed thereover. The conductive layer has an exposed surface adapted to polish a substra
7160432 Method and composition for polishing a substrate January 9, 2007
Polishing compositions and methods for removing conductive materials from a substrate surface are provided. In one aspect, a method is provided for processing a substrate to remove conductive material disposed over narrow feature definitions formed in a substrate at a higher removal rate
7128825 Method and composition for polishing a substrate October 31, 2006
Polishing compositions and methods for removing conductive materials from a substrate surface are provided. In one aspect, a composition includes an acid based electrolyte system, one or more chelating agents, one or more corrosion inhibitors, one or more inorganic or organic acid salts,
7104869 Barrier removal at low polish pressure September 12, 2006
The invention generally provides methods and compositions for planarizing a substrate surface having underlying dielectric materials. Aspects of the invention provide compositions and methods using a combination of low polishing pressures, polishing compositions, various polishing speeds
7084064 Full sequence metal and barrier layer electrochemical mechanical processing August 1, 2006
A method and apparatus for electrochemically processing metal and barrier materials is provided. In one embodiment, a method for electrochemically processing a substrate includes the steps of establishing an electrically-conductive path through an electrolyte between an exposed layer
7077721 Pad assembly for electrochemical mechanical processing July 18, 2006
Embodiments of a processing pad assembly for processing a substrate are provided. The processing pad assembly includes an upper layer having a processing surface and an electrode having a top side coupled to the upper layer and a bottom side opposite the top side. A first set of holes
7060606 Method and apparatus for chemical mechanical polishing of semiconductor substrates June 13, 2006
Methods and apparatus for processing substrates to improve polishing uniformity, improve planarization, remove residual material and minimize defect formation are provided. In one aspect, a method is provided for processing a substrate having a conductive material and a low dielectric
7008554 Dual reduced agents for barrier removal in chemical mechanical polishing March 7, 2006
Compositions and methods for removal of barrier layer materials by a chemical mechanical polishing technique are provided. In one aspect, the invention provides a composition adapted for removing a barrier layer material in a chemical mechanical polishing technique including at least
6991528 Conductive polishing article for electrochemical mechanical polishing January 31, 2006
Embodiments of a polishing article for processing a substrate are provided. In one embodiment, a polishing article for processing a substrate comprises a fabric layer having a conductive layer disposed thereover. The conductive layer has an exposed surface adapted to polish a substra
6991526 Control of removal profile in electrochemically assisted CMP January 31, 2006
Aspects of the invention generally provide a method and apparatus for polishing a substrate using electrochemical deposition techniques. In one aspect, an apparatus for polishing a substrate comprises a counter-electrode and a pad positioned between a substrate and the counter-electr
6979248 Conductive polishing article for electrochemical mechanical polishing December 27, 2005
An article of manufacture, method, and apparatus are provided for planarizing a substrate surface. In one aspect, an article of manufacture is provided for polishing a substrate including a polishing article having a body comprising at least a portion of fibers coated with a conductive
6962524 Conductive polishing article for electrochemical mechanical polishing November 8, 2005
Embodiments of a ball assembly are provided. In one embodiment, a ball assembly includes a housing, a ball, a conductive adapter and a contact element. The housing has an annular seat extending into a first end of an interior passage. The conductive adapter is coupled to a second end of
6899804 Electrolyte composition and treatment for electrolytic chemical mechanical polishing May 31, 2005
An electrolyte composition and method for planarizing a surface of a wafer using the electrolyte composition is provided. In one aspect, the electrolyte composition includes ammonium dihydrogen phosphate, diammonium hydrogen phosphate, or a mixture thereof. The composition has a pH betwe
6863797 Electrolyte with good planarization capability, high removal rate and smooth surface finish for March 8, 2005
Electrolyte compositions and methods for planarizing a surface of a substrate using the electrolyte compositions are provided. In one aspect, an electrolyte composition includes one or more chelating agents, one or more corrosion inhibitors, and one or more pH adjusting agents. In anothe
6821881 Method for chemical mechanical polishing of semiconductor substrates November 23, 2004
Methods and apparatus for processing substrates to improve polishing uniformity, improve planarization, remove residual material and minimize defect formation are provided. In one aspect, a method is provided for processing a substrate having a conductive material and a low dielectric
6776693 Method and apparatus for face-up substrate polishing August 17, 2004
A method and apparatus are provided for polishing a substrate surface. In one aspect, an apparatus for polishing a substrate includes a basin and a polishing head. A carrier is disposed in the basin and has a substrate supporting surface. A retaining ring is disposed on the carrier and a


 
 
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