Patents by Inventor Daniel Fellers
Daniel Fellers has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6464568Abstract: Methods for the chemical-mechanical polishing (CMP) of copper layers on integrated circuits are described, along with the chemical compositions of various pre- and post-polishing solutions. In one embodiment, a pre-polish cleaning operation with a complexing organic acid buffer system is performed prior to the CMP of the copper. In alternative embodiments, a rinse operation is performed subsequent to the cleaning operation and prior to the CMP. In further alternatives, a post-polish cleaning operation with a chelating agent is performed. In still further alternatives, the pH of a pre-polish cleaner is ramped during the pre-polish cleaning operation to match the pH of the polish slurry which is used, subsequent to the cleaning operation, to remove excess portions of the copper layer to be polished.Type: GrantFiled: December 4, 2000Date of Patent: October 15, 2002Assignee: Intel CorporationInventors: Anne E. Miller, A. Daniel Feller, Kenneth C. Cadien
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Patent number: 6443814Abstract: Methods for the chemical-mechanical polishing (CMP) of copper layers on integrated circuits are described, along with the chemical compositions of various pre- and post-polishing solutions. In one embodiment, a pre-polish cleaning operation with a complexing organic acid buffer system is performed prior to the CMP of the copper. In alternative embodiments, a rinse operation is performed subsequent to the cleaning operation and prior to the CMP. In further alternatives, a post-polish cleaning operation with a chelating agent is performed. In still further alternatives, the pH of a pre-polish cleaner is ramped during the pre-polish cleaning operation to match the pH of the polish slurry which is used, subsequent to the cleaning operation, to remove excess portions of the copper layer to be polished.Type: GrantFiled: September 24, 2001Date of Patent: September 3, 2002Assignee: Intel CorporationInventors: Anne E. Miller, A. Daniel Feller, Kenneth C. Cadien
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Publication number: 20020107155Abstract: Methods for the chemical-mechanical polishing (CMP) of copper layers on integrated circuits are described, along with the chemical compositions of various pre- and post-polishing solutions. In one embodiment, a pre-polish cleaning operation with a complexing organic acid buffer system is performed prior to the CMP of the copper. In alternative embodiments, a rinse operation is performed subsequent to the cleaning operation and prior to the CMP. In further alternatives, a post-polish cleaning operation with a chelating agent is performed. In still further alternatives, the pH of a pre-polish cleaner is ramped during the pre-polish cleaning operation to match the pH of the polish slurry which is used, subsequent to the cleaning operation, to remove excess portions of the copper layer to be polished.Type: ApplicationFiled: January 9, 2002Publication date: August 8, 2002Inventors: Anne E. Miller, A. Daniel Feller, Kenneth C. Cadien
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Publication number: 20020106976Abstract: Methods for the chemical-mechanical polishing (CMP) of copper layers on integrated circuits are described, along with the chemical compositions of various pre- and post-polishing solutions. In one embodiment, a pre-polish cleaning operation with a complexing organic acid buffer system is performed prior to the CMP of the copper. In alternative embodiments, a rinse operation is performed subsequent to the cleaning operation and prior to the CMP. In further alternatives, a post-polish cleaning operation with a chelating agent is performed. In still further alternatives, the pH of a pre-polish cleaner is ramped during the pre-polish cleaning operation to match the pH of the polish slurry which is used, subsequent to the cleaning operation, to remove excess portions of the copper layer to be polished.Type: ApplicationFiled: December 4, 2000Publication date: August 8, 2002Inventors: Anne E. Miller, A. Daniel Feller, Kenneth C. Cadien
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Publication number: 20020102922Abstract: Methods for the chemical-mechanical polishing (CMP) of copper layers on integrated circuits are described, along with the chemical compositions of various pre- and post-polishing solutions. In one embodiment, a pre-polish cleaning operation with a complexing organic acid buffer system is performed prior to the CMP of the copper. In alternative embodiments, a rinse operation is performed subsequent to the cleaning operation and prior to the CMP. In further alternatives, a post-polish cleaning operation with a chelating agent is performed. In still further alternatives, the pH of a pre-polish cleaner is ramped during the pre-polish cleaning operation to match the pH of the polish slurry which is used, subsequent to the cleaning operation, to remove excess portions of the copper layer to be polished.Type: ApplicationFiled: September 24, 2001Publication date: August 1, 2002Inventors: Anne E. Miller, A. Daniel Feller, Kenneth C. Cadien
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Publication number: 20020053656Abstract: The invention provides a chemical-mechanical polishing slurry comprising a liquid, cerium ions as an oxidizer, an abrasive, and a pH increasing substance. The cerium ions are in the liquid in a quantity equal to the inclusion of at least 0.02 molar ammonium cerium nitrate in the liquid. The abrasive is also included in the liquid. The liquid, the cerium ions and the abrasive jointly have a first pH value. The pH increasing substance increases the first pH value to a second pH value above 1.5.Type: ApplicationFiled: March 29, 1999Publication date: May 9, 2002Inventors: ANNE E. MILLER, A. DANIEL FELLER, KENNETH C. CADIEN
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Patent number: 6375552Abstract: Novel slurries for the chemical mechanical polishing of thin films used in integrated circuit manufacturing. A tungsten slurry of the present invention comprises an oxidizing agent, such as potassium ferricyanide, an abrasive such as silica, and has a pH between two and four. The tungsten slurry of the present invention can be used in a chemical mechanical planarization process to polish back a blanket deposited tungsten film to form plugs or vias. The tungsten slurry can also be used to polish copper, tungsten silicide, and titanium nitrate. A second slurry, which is a 9:1 dilution of the tungsten slurry is ideal for chemical mechanical polishing of titanium nitride films. A third slurry of the present invention comprises a fluoride salt, an abrasive such as silica an has a pH≦8. The third slurry can be used to polish titanium films.Type: GrantFiled: November 28, 2000Date of Patent: April 23, 2002Assignee: Intel CorporationInventors: Kenneth C. Cadien, Daniel A. Feller
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Patent number: 6178585Abstract: Novel slurries for the chemical mechanical polishing of thin films used in integrated circuit manufacturing. A tungsten slurry of the present invention comprises an oxidizing agent, such as potassium ferricyanide, an abrasive such as silica, and has a pH between two and four. The tungsten slurry of the present invention can be used in a chemical mechanical planarization process to polish back a blanket deposited tungsten film to form plugs or vias. The tungsten slurry can also be used to polish copper, tungsten silicide, and titanium nitride. A second slurry, which is a 9:1 dilution of the tungsten slurry is ideal for chemical mechanical polishing of titanium nitride films. A third slurry of the present invention comprises a fluoride salt, an abrasive such as silica and has a pH≦8. The third slurry can be used to polish titanium films.Type: GrantFiled: February 16, 2000Date of Patent: January 30, 2001Assignee: Intel CorporationInventors: Kenneth C. Cadien, Daniel A. Feller
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Patent number: 6046099Abstract: Novel slurries for the chemical mechanical polishing of thin films used in integrated circuit manufacturing. A tungsten slurry of the present invention comprises an oxidizing agent, such as potassium ferricyanide, an abrasive such as silica, and has a pH between two and four. The tungsten slurry of the present invention can be used in a chemical mechanical planarization process to polish back a blanket deposited tungsten film to form plugs or vias. The tungsten slurry can also be used to polish copper, tungsten silicide, and titanium nitride. A second slurry, which is a 9:1 dilution of the tungsten slurry is ideal for chemical mechanical polishing of titanium nitride films. A third slurry of the present invention comprises a fluoride salt, an abrasive such as silica and has a pH.ltoreq.8. The third slurry can be used to polish titanium films.Type: GrantFiled: June 10, 1999Date of Patent: April 4, 2000Assignee: Intel CorporationInventors: Kenneth C. Cadien, Daniel A. Feller
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Patent number: 5954975Abstract: Novel slurries for the chemical mechanical polishing of thin films used in integrated circuit manufacturing. A tungsten slurry of the present invention comprises an oxidizing agent, such as potassium ferricyanide, an abrasive such as silica, and has a pH between two and four. The tungsten slurry of the present invention can be used in a chemical mechanical planarization process to polish back a blanket deposited tungsten film to form plugs or vias. The tungsten slurry can also be used to polish copper, tungsten silicide, and titanium nitride. A second slurry, which is a 9:1 dilution of the tungsten slurry is ideal for chemical mechanical polishing of titanium nitride films. A third slurry of the present invention comprises a fluoride salt, an abrasive such as silica and has a pH.ltoreq.8. The third slurry can be used to polish titanium films.Type: GrantFiled: February 7, 1997Date of Patent: September 21, 1999Assignee: Intel CorporationInventors: Kenneth C. Cadien, Daniel A. Feller
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Patent number: 5836806Abstract: Novel slurries for the chemical mechanical polishing of thin films used in integrated circuit manufacturing. A tungsten slurry of the present invention comprises an oxidizing agent, such as potassium ferricyanide, an abrasive such as silica, and has a pH between two and four. The tungsten slurry of the present invention can be used in a chemical mechanical planarization process to polish back a blanket deposited tungsten film to form plugs or vias. The tungsten slurry can also be used to polish copper, tungsten silicide, and titanium nitride. A second slurry, which is a 9:1 dilution of the tungsten slurry is ideal for chemical mechanical polishing of titanium nitride films. A third slurry of the present invention comprises a fluoride salt, an abrasive such as silica and has a pH.ltoreq.8. The third slurry can be used to polish titanium films.Type: GrantFiled: March 28, 1996Date of Patent: November 17, 1998Assignee: Intel CorporationInventors: Kenneth C. Cadien, Daniel A. Feller
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Patent number: 5700383Abstract: Slurries and methods for the chemical mechanical polishing of thin films used in integrated circuit manufacturing are described. A first slurry comprises an oxidant, such as water, a halogen, such as fluorine, an abrasive, such as silica, and a chelating agent, such as citric acid, and has a pH between four and nine. The first slurry is ideal for the chemical mechanical polish of an aluminum film. Another slurry comprises an abrasive, such as silica, and an acid, such as citric acid, and has a pH of approximately three. The second slurry is ideal for the chemical mechanical polish of titanium aluminide and is compatible with the first slurry.Type: GrantFiled: December 21, 1995Date of Patent: December 23, 1997Assignee: Intel CorporationInventors: A. Daniel Feller, Kenneth C. Cadien
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Patent number: 5516346Abstract: Novel slurries for the chemical mechanical polishing of thin films used in integrated circuit manufacturing. A tungsten slurry of the present invention comprises an oxidizing agent, such as potassium ferricyanide, an abrasive such as silica, and has a pH between two and four. The tungsten slurry of the present invention can be used in a chemical mechanical planarization process to polish back a blanket deposited tungsten film to form plugs or vias. The tungsten slurry can also be used to polish copper, tungsten silicide, and titanium nitride. A second slurry, which is a 9:1 dilution of the tungsten slurry is ideal for chemical mechanical polishing of titanium nitride films. A third slurry of the present invention comprises a fluoride salt, an abrasive such as silica and has a pH.ltoreq.8. The third slurry can be used to polish titanium films.Type: GrantFiled: May 13, 1994Date of Patent: May 14, 1996Assignee: Intel CorporationInventors: Kenneth C. Cadien, Daniel A. Feller
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Patent number: 5340370Abstract: Novel slurries for the chemical mechanical polishing of thin films used in integrated circuit manufacturing. A tungsten slurry of the present invention comprises an oxidizing agent, such as potassium ferricyanide, an abrasive such as silica, and has a pH between two and four. The tungsten slurry of the present invention can be used in a chemical mechanical planarization process to polish back a blanket deposited tungsten film to form plugs or vias. The tungsten slurry can also be used to polish copper, tungsten silicide, and titanium nitride. A second slurry, which is a 9:1 dilution of the tungsten slurry is ideal for chemical mechanical polishing of titanium nitride films. A third slurry of the present invention comprises a fluoride salt, an abrasive such as silica and has a pH.ltoreq.8. The third slurry can be used to polish titanium films.Type: GrantFiled: November 3, 1993Date of Patent: August 23, 1994Assignee: Intel CorporationInventors: Kenneth C. Cadien, Daniel A. Feller