Patents by Inventor Wai-Fan Yau

Wai-Fan Yau 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).

  • Publication number: 20040201103
    Abstract: A method and apparatus for depositing a low dielectric constant film by reaction of an organo silane compound and an oxidizing gas. The oxidized organo silane film has excellent barrier properties for use as a liner or cap layer adjacent other dielectric layers. The oxidized organo silane film can also be used as an etch stop or an intermetal dielectric layer for fabricating dual damascene structures. The oxidized organo silane films also provide excellent adhesion between different dielectric layers. A preferred oxidized organo silane film is produced by reaction of methyl silane, CH3SiH3, and N2O.
    Type: Application
    Filed: April 29, 2004
    Publication date: October 14, 2004
    Inventors: Wai-Fan Yau, David Cheung, Shin-Puu Jeng, Kuowei Liu, Yung-Cheng Yu
  • Patent number: 6800571
    Abstract: A method and apparatus for depositing a low dielectric constant film by reaction of an organosilane or organosiloxane compound and an oxidizing gas at a low RF power level from 10-250 W. The oxidized organosilane or organosiloxane film has good barrier properties for use as a liner or cap layer adjacent other dielectric layers. The oxidized organosilane or organosiloxane film may also be used as an etch stop or an intermetal dielectric layer for fabricating dual damascene structures. The oxidized organosilane or organosiloxane films also provide excellent adhesion between different dielectric layers. A preferred oxidized organosilane film is produced by reaction of methylsilane, CH3SiH3, or dimethylsilane, (CH3)2SiH2, and nitrous oxide, N2O, at an RF power level from about 10 to 200 W or a pulsed RF power level from about 20 to 250 W during 10-30% of the duty cycle.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: October 5, 2004
    Assignee: Applied Materials Inc.
    Inventors: David Cheung, Wai-Fan Yau, Robert R. Mandal
  • Patent number: 6784107
    Abstract: A method of planarizing a copper interconnect structure using an atomic layer removal (ALR) technique to planarize a copper layer. In one embodiment, the ALR process performs a plurality of cycles, each cycle having a period of forming a film of copper fluoride on the copper layer and a period of removing the film of copper fluoride. The ALR process is repeated until a barrier layer beneath the copper layer is then etched to expose a dielectric material. The remaining copper forms a conductive line that is substantially coplanar with the dielectric material.
    Type: Grant
    Filed: March 18, 2003
    Date of Patent: August 31, 2004
    Inventors: Hui Chen, Chun Yan, Wai-Fan Yau
  • Patent number: 6784119
    Abstract: A method for processing a substrate comprising depositing a dielectric layer comprising silicon, oxygen, and carbon on the substrate by chemical vapor deposition, wherein the dielectric layer has a carbon content of at least 1% by atomic weight and a dielectric constant of less than about 3, and depositing a silicon and carbon containing layer on the dielectric layer. The dielectric constant of a dielectric layer deposited by reaction of an organosilicon compound having three or more methyl groups is significantly reduced by further depositing an amorphous hydrogenated silicon carbide layer by reaction of an alkylsilane in a plasma of a relatively inert gas.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: August 31, 2004
    Assignee: Applied Materials Inc.
    Inventors: Frederic Gaillard, Li-Qun Xia, Tian-Hoe Lim, Ellie Yieh, Wai-Fan Yau, Shin-Puu Jeng, Kuowei Liu, Yung-Cheng Lu
  • Publication number: 20040166665
    Abstract: A method for processing a substrate comprising depositing a dielectric layer comprising silicon, oxygen, and carbon on the substrate by chemical vapor deposition, wherein the dielectric layer has a carbon content of at least 1% by atomic weight and a dielectric constant of less than about 3, and depositing a silicon and carbon containing layer on the dielectric layer. The dielectric constant of a dielectric layer deposited by reaction of an organosilicon compound having three or more methyl groups is significantly reduced by further depositing an amorphous hydrogenated silicon carbide layer by reaction of an alkylsilane in a plasma of a relatively inert gas.
    Type: Application
    Filed: February 27, 2004
    Publication date: August 26, 2004
    Applicant: Applied Materials, Inc.
    Inventors: Frederic Gaillard, Li-Qun Xia, Tian-Hoe Lim, Ellie Yieh, Wai-Fan Yau, Shin-Puu Jeng, Kuowei Liu, Yung-Cheng Lu
  • Patent number: 6770556
    Abstract: A method and apparatus for depositing a low dielectric constant film by reaction of an organo silane compound and an oxidizing gas. The oxidized organo silane film has excellent barrier properties for use as a liner or cap layer adjacent other dielectric layers. The oxidized organo silane film can also be used as an etch stop or an intermetal dielectric layer for fabricating dual damascene structures. The oxidized organo silane films also provide excellent adhesion between different dielectric layers. A preferred oxidized organo silane film is produced by reaction of methyl silane, CH3SiH3, and N2O.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: August 3, 2004
    Assignee: Applied Materials Inc.
    Inventors: Wai-Fan Yau, David Cheung, Shin-Puu Jeng, Kuowei Liu, Yung-Cheng Yu
  • Publication number: 20040147109
    Abstract: A method and apparatus for depositing a low dielectric constant film by reaction of an organo silane compound and an oxidizing gas. The oxidized organo silane film has excellent barrier properties for use as a liner or cap layer adjacent other dielectric layers. The oxidized organo silane film can also be used as an etch stop or an intermetal dielectric layer for fabricating dual damascene structures. The oxidized organo silane films also provide excellent adhesion between different dielectric layers. A preferred oxidized organo silane film is produced by reaction of methyl silane, CH3SiH3, and N2O.
    Type: Application
    Filed: January 13, 2004
    Publication date: July 29, 2004
    Applicant: Applied Materials, Inc.
    Inventors: Wai-Fan Yau, David Cheung, Shin-Puu Jeng, Kuowei Liu, Yung-Cheng Yu
  • Patent number: 6743737
    Abstract: A method and apparatus for depositing a low dielectric constant film includes depositing a silicon oxide based film, preferably by reaction of an organosilicon compound and an oxidizing gas at a low RF power level from about 10 W to about 500 W, exposing the silicon oxide based film to water or a hydrophobic-imparting surfactant such as hexamethyldisilazane, and curing the silicon oxide based film at an elevated temperature. Dissociation of the oxidizing gas can be increased in a separate microwave chamber to assist in controlling the carbon content of the deposited film. The moisture resistance of the silicon oxide based films is enhanced.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: June 1, 2004
    Assignee: Applied Materials, Inc.
    Inventors: Wai-Fan Yau, David Cheung, Nasreen Gazala Chopra, Yung-Cheng Lu, Robert Mandal, Farhad Moghadam
  • Patent number: 6734115
    Abstract: A method and apparatus for depositing a low dielectric constant film by reaction of an organosilicon compound and an oxidizing gas comprising carbon at a constant RF power level. Dissociation of the oxidizing gas can be increased prior to mixing with the organosilicon compound, preferably within a separate microwave chamber, to assist in controlling the carbon content of the deposited film. The oxidized organosilane or organosiloxane film has good barrier properties for use as a liner or cap layer adjacent other dielectric layers. The oxidized organosilane or organosiloxane film may also be used as an etch stop and an intermetal dielectric layer for fabricating dual damascene structures. The oxidized organosilane or organosiloxane films also provide excellent adhesion between different dielectric layers.
    Type: Grant
    Filed: August 27, 2002
    Date of Patent: May 11, 2004
    Assignee: Applied Materials Inc.
    Inventors: David Cheung, Wai-Fan Yau, Robert P. Mandal, Shin-Puu Jeng, Kuo-Wei Liu, Yung-Cheng Lu, Michael Barnes, Ralf B. Willecke, Farhad Moghadam, Tetsuya Ishikawa, Tze Wing Poon
  • Patent number: 6730593
    Abstract: A method and apparatus for depositing a low dielectric constant film by reaction of an organo silane compound and an oxidizing gas. The oxidized organo silane film has excellent barrier properties for use as a liner or cap layer adjacent other dielectric layers. The oxidized organo silane film can also be used as an etch stop or an intermetal dielectric layer for fabricating dual damascene structures. The oxidized organo silane films also provide excellent adhesion between different dielectric layers. A preferred oxidized organo silane film is produced by reaction of methyl silane, CH3SiH3, and N2O.
    Type: Grant
    Filed: November 15, 2001
    Date of Patent: May 4, 2004
    Assignee: Applied Materials Inc.
    Inventors: Wai-Fan Yau, David Cheung, Shin-Puu Jeng, Kuowei Liu, Yung-Cheng Yu
  • Publication number: 20040082199
    Abstract: A method and apparatus for depositing a low dielectric constant film by reaction of an organosilicon compound and an oxidizing gas comprising carbon at a constant RF power level. Dissociation of the oxidizing gas can be increased prior to mixing with the organosilicon compound, preferably within a separate microwave chamber, to assist in controlling the carbon content of the deposited film. The oxidized organosilane or organosiloxane film has good barrier properties for use as a liner or cap layer adjacent other dielectric layers. The oxidized organosilane or organosiloxane film may also be used as an etch stop and an intermetal dielectric layer for fabricating dual damascene structures. The oxidized organosilane or organosiloxane films also provide excellent adhesion between different dielectric layers.
    Type: Application
    Filed: August 26, 2003
    Publication date: April 29, 2004
    Applicant: Applied Materials, Inc.
    Inventors: David Cheung, Wai-Fan Yau, Robert P. Mandal, Shin-Puu Jeng, Kuo-Wei Liu, Yung-Cheng Lu, Michael Barnes, Ralf B. Willecke, Farhad Moghadam, Tetsuya Ishikawa, Tze Wing Poon
  • Publication number: 20040038545
    Abstract: A method and apparatus for depositing a low dielectric constant film by reaction of an organosilicon compound and an oxidizing gas at a constant RF power level from about 10W to about 200W or a pulsed RF power level from about 20W to about 500W. Dissociation of the oxidizing gas can be increased prior to mixing with the organosilicon compound, preferably within a separate microwave chamber, to assist in controlling the carbon content of the deposited film. The oxidized organosilane or organosiloxane film has good barrier properties for use as a liner or cap layer adjacent other dielectric layers. The oxidized organosilane or organosiloxane film may also be used as an etch stop and an intermetal dielectric layer for fabricating dual damascene structures. The oxidized organosilane or organosiloxane films also provide excellent adhesion between different dielectric layers.
    Type: Application
    Filed: August 26, 2003
    Publication date: February 26, 2004
    Applicant: Applied Materials, Inc.
    Inventors: David Cheung, Wai-Fan Yau, Robert P. Mandal, Shin-Puu Jeng, Kuo-wei Liu, Yung-Cheng Lu, Michael Barnes, Ralf B. Willecke, Farhad Moghadam, Tetsuya Ishikawa, Tze Wing Poon
  • Publication number: 20040029400
    Abstract: A method for processing a substrate comprising depositing a dielectric layer comprising silicon, oxygen, and carbon on the substrate by chemical vapor deposition, wherein the dielectric layer has a carbon content of at least 1% by atomic weight and a dielectric constant of less than about 3, and depositing a silicon and carbon containing layer on the dielectric layer. The dielectric constant of a dielectric layer deposited by reaction of an organosilicon compound having three or more methyl groups is significantly reduced by further depositing an amorphous hydrogenated silicon carbide layer by reaction of an alkylsilane in a plasma of a relatively inert gas.
    Type: Application
    Filed: July 31, 2003
    Publication date: February 12, 2004
    Applicant: Applied Materials, Inc.
    Inventors: Frederic Gaillard, Li-Qun Xia, Tian-Hoe Lim, Ellie Yieh, Wai-Fan Yau, Shin-Puu Jeng, Kuowei Liu, Yung-Cheng Lu
  • Patent number: 6669858
    Abstract: A method of depositing and etching dielectric layers having low dielectric constants and etch rates that vary by at least 3:1 for formation of horizontal interconnects. The amount of carbon or hydrogen in the dielectric layer is varied by changes in deposition conditions to provide low k dielectric layers that can replace etch stop layers or conventional dielectric layers in damascene applications. A dual damascene structure having two or more dielectric layers with dielectric constants lower than about 4 can be deposited in a single reactor and then etched to form vertical and horizontal interconnects by varying the concentration of a carbon:oxygen gas such as carbon monoxide. The etch gases for forming vertical interconnects preferably comprises CO and a fluorocarbon, and CO is preferably excluded from etch gases for forming horizontal interconnects.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: December 30, 2003
    Assignee: Applied Materials Inc.
    Inventors: Claes H. Bjorkman, Min Melissa Yu, Hongquing Shan, David W. Cheung, Wai-Fan Yau, Kuowei Liu, Nasreen Gazala Chapra, Gerald Yin, Farhad K. Moghadam, Judy H. Huang, Dennis Yost, Betty Tang, Yunsang Kim
  • Patent number: 6660663
    Abstract: A method and apparatus for depositing a low dielectric constant film by reaction of an organosilane or organosiloxane compound and an oxidizing gas at a low RF power level from 10-250 W. The oxidized organosilane or organosiloxane film has good barrier properties for use as a liner or cap layer adjacent other dielectric layers. The oxidized organosilane or organosiloxane film may also be used as an etch stop or an intermetal dielectric layer for fabricating dual damascene structures. The oxidized organosilane or organosiloxane films also provide excellent adhesion between different dielectric layers. A preferred oxidized organosilane film is produced by reaction of methylsilane, CH3SiH3, or dimethylsilane, (CH3)2SiH2, and nitrous oxide, N2O, at an RF power level from about 10 to 200 W or a pulsed RF power level from about 20 to 250 W during 10-30% of the duty cycle.
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: December 9, 2003
    Assignee: Applied Materials Inc.
    Inventors: David Cheung, Wai-Fan Yau, Robert R. Mandal
  • Patent number: 6660656
    Abstract: A method and apparatus for depositing a low dielectric constant film by reaction of an organosilicon compound and an oxidizing gas at a constant RF power level from about 10W to about 200W or a pulsed RF power level from about 20W to about 500W. Dissociation of the oxidizing gas can be increased prior to mixing with the organosilicon compound, preferably within a separate microwave chamber, to assist in controlling the carbon content of the deposited film. The oxidized organosilane or organosiloxane film has good barrier properties for use as a liner or cap layer adjacent other dielectric layers. The oxidized organosilane or organosiloxane film may also be used as an etch stop and an intermetal dielectric layer for fabricating dual damascene structures. The oxidized organosilane or organosiloxane films also provide excellent adhesion between different dielectric layers.
    Type: Grant
    Filed: September 19, 2001
    Date of Patent: December 9, 2003
    Assignee: Applied Materials Inc.
    Inventors: David Cheung, Wai-Fan Yau, Robert P. Mandal, Shin-Puu Jeng, Kuo-Wei Liu, Yung-Cheng Lu, Michael Barnes, Ralf B. Willecke, Farhad Moghadam, Tetsuya Ishikawa, Tze Wing Poon
  • Publication number: 20030219912
    Abstract: A method for removal of metallic residue from a substrate after a plasma etch process in a semiconductor substrate processing system by cleaning the substrate in a hydrogen fluoride solution.
    Type: Application
    Filed: November 1, 2002
    Publication date: November 27, 2003
    Inventors: Xiaoyi Chen, Chentsau Ying, Padmapani C. Nallan, Ajay Kumar, Ralph C. Kerns, Ying Rui, Chun Yan, Guowen Ding, Wai-Fan Yau
  • Patent number: 6649532
    Abstract: One embodiment of the present invention is a process for etching an organic anti-reflective coating on a base of a substrate, the process including steps of: (a) placing the substrate into a processing chamber; (b) introducing into the processing chamber a processing gas including one or more of carbon monoxide (CO), carbon dioxide (CO2), and sulfur oxide (SO2); and (c) forming a plasma from the processing gas to etch the organic anti-reflective coating layer.
    Type: Grant
    Filed: May 9, 2002
    Date of Patent: November 18, 2003
    Assignee: Applied Materials Inc.
    Inventors: Hui Chen, Xikun Wang, Hong Shih, Chun Yan, Wai-Fan Yau
  • Publication number: 20030209520
    Abstract: One embodiment of the present invention is a process for etching an organic anti-reflective coating on a base of a substrate, the process including steps of: (a) placing the substrate into a processing chamber; (b) introducing into the processing chamber a processing gas including one or more of carbon monoxide (CO), carbon dioxide (CO2), and sulfur oxide (SO2); and (c) forming a plasma from the processing gas to etch the organic anti-reflective coating layer.
    Type: Application
    Filed: May 9, 2002
    Publication date: November 13, 2003
    Applicant: Applied Materials, Inc.
    Inventors: Hui Chen, Xikun Wang, Hong Shih, Chun Yan, Wai-Fan Yau
  • Publication number: 20030194877
    Abstract: A method is provided processing workpieces including etching metal from a workpiece to define metal structures on the workpiece and transporting the workpiece through a controlled environment passage between an etch chamber and a wet clean module after the etching. A wet cleaning and drying of the workpiece is performed in the wet clean module to remove metal etch residues from the workpiece. The workpiece is transported through the controlled environment passage to an annealing chamber after wet cleaning. An annealing is performed and the metal structures are capped before exposing the workpiece to ambient atmosphere after etching, wet cleaning, and annealing. The capping may be performed in situ with the annealing in a CVD chamber. The metal etch process may include performing a timed etch for etching back a portion of a metal layer followed by a slow to endpoint etch with an endpoint signal, followed by a timed over etch.
    Type: Application
    Filed: April 16, 2002
    Publication date: October 16, 2003
    Applicant: Applied Materials, Inc.
    Inventors: Wai-Fan Yau, Kevin P. Fairbairn, Michael Barnes