Patents by Inventor Kam S. Law

Kam S. Law 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).

  • Patent number: 6880561
    Abstract: A process for removing residue from the interior of a semiconductor process chamber using molecular fluorine gas (F2) as the principal precursor reagent. In one embodiment a portion of the molecular fluorine is decomposed in a plasma to produce atomic fluorine, and the resulting mixture of atomic fluorine and molecular fluorine is supplied to the chamber whose interior is to be cleaned. In another embodiment the molecular fluorine gas cleans the semiconductor process chamber without any plasma excitation. Molecular fluorine gas has the advantage of not being a global warming gas, unlike fluorine-containing gas compounds conventionally used for chamber cleaning such as NF3, C2F6 and SF6.
    Type: Grant
    Filed: May 5, 2003
    Date of Patent: April 19, 2005
    Assignee: Applied Materials, Inc.
    Inventors: Haruhiro Harry Goto, William R. Harshbarger, Quanyuan Shang, Kam S. Law
  • Patent number: 6857387
    Abstract: An apparatus and method for fabricating an electronic workpiece in which first and second electrodes within a plasma chamber are respectively connected to low frequency and high frequency RF power supplies. At least one capacitor is connected between the first electrode and electrical ground. The one or more capacitors can reduce or eliminate the coupling of high frequency RF power to any plasma outside the region directly between the two electrodes. Consequently, the invention can improve the performance of the plasma process by concentrating more of the RF power in the region between the two electrodes.
    Type: Grant
    Filed: May 3, 2000
    Date of Patent: February 22, 2005
    Assignee: Applied Materials, Inc.
    Inventors: Sheng Sun, Jeff C. Olsen, Sanjay Yadav, Quanyuan Shang, Kam S. Law
  • Patent number: 6843258
    Abstract: Provided herein is a method for cleaning a process chamber for semiconductor and/or flat panel display manufacturing. This method comprises the steps of converting a non-cleaning feed gas to a cleaning gas in a remote location and then delivering the cleaning gas to the process chamber for cleaning. Such method may further comprise the step of activating the cleaning gas outside the chamber before the delivery of the gas to the chamber. Also provided is a method of eliminating non-cleaning feed gas from the cleaning gas by cryo condensation.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: January 18, 2005
    Assignee: Applied Materials, Inc.
    Inventors: Quanyuan Shang, Sanjay Yadav, William R. Harshbarger, Kam S. Law
  • Patent number: 6825134
    Abstract: A method of film layer deposition is described. A film layer is deposited using a cyclical deposition process. The cyclical deposition process consists essentially of a continuous flow of one or more process gases and the alternate pulsing of a precursor and energy to form a film on a substrate structure.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: November 30, 2004
    Assignee: Applied Materials, Inc.
    Inventors: Kam S. Law, Quanyuan Shang, William R. Harshbarger, Dan Maydan, Soo Young Choi, Beom Soo Park, Sanjay Yadav, John M. White
  • Publication number: 20040216768
    Abstract: Provided herein is a method for cleaning a process chamber for semiconductor and/or flat panel display manufacturing. This method comprises the steps of converting a non-cleaning feed gas to a cleaning gas in a remote location and then delivering the cleaning gas to the process chamber for cleaning. Such method may further comprise the step of activating the cleaning gas outside the chamber before the delivery of the gas to the chamber. Also provided is a method of eliminating non-cleaning feed gas from the cleaning gas by cryo condensation.
    Type: Application
    Filed: May 27, 2004
    Publication date: November 4, 2004
    Inventors: Quanyuan Shang, Sanjay Yadav, William R. Harshbarger, Kam S. Law
  • Publication number: 20040203181
    Abstract: Methods are provided for forming a transistor for use in an active matrix liquid crystal display (AMLCD). In one aspect a method is provided for processing a substrate including providing a glass substrate, depositing a conductive seed layer on a surface of the glass substrate, depositing a resist material on the conductive seed layer, patterning the resist layer to expose portions of the conductive seed layer, and depositing a metal layer on the exposed portions of the conductive seed layer by an electrochemical technique.
    Type: Application
    Filed: April 11, 2003
    Publication date: October 14, 2004
    Inventors: Quanyuan Shang, John M. White, Robert Z. Bachrach, Kam S. Law
  • Publication number: 20040058067
    Abstract: A system and method for processing large area substrates. In one embodiment, a system for processing large area substrates includes prep station, a stamping station and a stamp that is automatically moved between the stamping station and the prep station. The stamping station is adapted to retain a large area substrate thereon. The stamp has a patterned bottom surface that is adapted for microcontact printing. The prep station is for applying a precursor to the patterned bottom surface of the stamp. In one embodiment, a method for processing large area substrates includes the steps of disposing a large area substrate on a platen, inking a stamp adapted for microcontact printing, and automatically contacting a bottom of the stamp to the large area substrate supported on a platen.
    Type: Application
    Filed: September 19, 2002
    Publication date: March 25, 2004
    Inventors: Kam S. Law, Robert Z. Bachrach, John M. White, Quanyuan Shang
  • Publication number: 20030219540
    Abstract: A method and apparatus for forming a polysilicon layer on a pre-annealed glass substrate. In one aspect, the method includes loading a pre-annealed glass substrate in a deposition chamber, depositing an amorphous silicon layer on the pre-annealed glass substrate, and annealing the pre-annealed glass substrate to form a polysilicon layer thereon. The amorphous silicon layer may be deposited concurrently with the annealing step to produce the polysilicon layer on the pre-annealed glass substrate. A nitride layer and/or an oxide layer may be deposited prior to depositing the amorphous silicon layer and annealing the pre-annealed glass substrate.
    Type: Application
    Filed: March 11, 2003
    Publication date: November 27, 2003
    Inventors: Kam S. Law, Dan Maydan
  • Publication number: 20030218424
    Abstract: A plasma display panel including a low k dielectric layer. In one embodiment, the dielectric layer is comprises a fluorine-doped silicon oxide layer such as an SiOF layer. In another embodiment, the dielectric layer comprises a Black Diamond™ layer. In certain embodiments, a capping layer such as SiN or SiON is deposited over the dielectric layer.
    Type: Application
    Filed: June 11, 2003
    Publication date: November 27, 2003
    Applicant: Applied Materials, Inc.
    Inventors: Kam S. Law, Quanyuan Shang, Takako Takehara, Taekyung Won, William R. Harshbarger, Dan Maydan
  • Patent number: 6647993
    Abstract: A substrate processing system includes a processing chamber and a plasma source located external to the chamber. A conduit connects the plasma source to an interior region of the chamber to provide a reactive species to the chamber interior for cleaning interior surfaces of the chamber. A shower head, disposed between the plasma source and an interior region of the chamber, can serve as an electrode and also can serve as a gas distribution mechanism. The shower head includes a surface treatment, such as a non-anodized aluminum outer layer, an electro-polished surface of bare aluminum, or a fluorine-based protective outer layer. The surface-treated shower head improves the rate of removal of materials deposited on the interior surfaces of the chamber during cleaning, reduces contamination of substrates during processing, and provides more efficient use of the power source used for heating the substrate during processing.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: November 18, 2003
    Assignee: Applied Komatsu Technology, Inc.
    Inventors: Quanyuan Shang, Sheng Sun, Kam S. Law, Emanuel Beer
  • Publication number: 20030192569
    Abstract: A process for removing residue from the interior of a semiconductor process chamber using molecular fluorine gas (F2) as the principal precursor reagent. In one embodiment a portion of the molecular fluorine is decomposed in a plasma to produce atomic fluorine, and the resulting mixture of atomic fluorine and molecular fluorine is supplied to the chamber whose interior is to be cleaned. In another embodiment the molecular fluorine gas cleans the semiconductor process chamber without any plasma excitation. Molecular fluorine gas has the advantage of not being a global warming gas, unlike fluorine-containing gas compounds conventionally used for chamber cleaning such as NF3, C2F6 and SF6.
    Type: Application
    Filed: May 5, 2003
    Publication date: October 16, 2003
    Applicant: Applied Materials, Inc.
    Inventors: Haruhiro Harry Goto, William R. Harshbarger, Quanyuan Shang, Kam S. Law
  • Publication number: 20030186561
    Abstract: A method of film layer deposition is described. A film layer is deposited using a cyclical deposition process. The cyclical deposition process consists essentially of a continuous flow of one or more process gases and the alternate pulsing of a precursor and energy to form a film on a substrate structure.
    Type: Application
    Filed: September 24, 2002
    Publication date: October 2, 2003
    Applicant: Applied Materials, Inc.
    Inventors: Kam S. Law, Quanyuan Shang, William R. Harshbarger, Dan Maydan, Soo Young Choi, Beom Soo Park, Sanjay Yadav, John M. White
  • Patent number: 6610354
    Abstract: A plasma display panel including a low k dielectric layer. In one embodiment, the dielectric layer is comprises a fluorine-doped silicon oxide layer such as an SiOF layer. In another embodiment, the dielectric layer comprises a Black Diamond™ layer. In certain embodiments, a capping layer such as SiN or SiON is deposited over the dielectric layer.
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: August 26, 2003
    Assignee: Applied Materials, Inc.
    Inventors: Kam S. Law, Quanyuan Shang, Takako Takehara, Taekyung Won, William R. Harshbarger, Dan Maydan
  • Publication number: 20030141820
    Abstract: Embodiments of the invention provide methods and apparatus to process substrates such as flat panel displays, solar panels, etc. In one aspect, the apparatus provides external toroidal plasma generation to perform substrate processes such as deposition and etching of rectangular-shaped substrates. In another aspect, the apparatus provides external toroidal plasma generation to perform chamber cleaning by flowing plasma of a process gas such as argon through a toroidal plasma current path that includes a processing region to be cleaned, introducing a cleaning gas such as fluorine into the processing region from a showerhead apparatus, and cleaning the processing region. In still another aspect, a toroidal plasma loop is shaped by a plasma shaping apparatus to direct the plasma across a processing region within the apparatus to improve process uniformity.
    Type: Application
    Filed: January 30, 2002
    Publication date: July 31, 2003
    Applicant: Applied Materials, Inc.
    Inventors: John M. White, Kam S. Law
  • Publication number: 20030109144
    Abstract: A process for selectively etching silicon from a workpiece without etching silicon oxide or silicon nitride. The principal etchant gas is molecular fluorine gas (F2) that is not excited to a plasma state.
    Type: Application
    Filed: December 24, 2002
    Publication date: June 12, 2003
    Applicant: Applied Materials, Inc.
    Inventors: Haruhiro Harry Goto, William R. Harshbarger, Kam S. Law
  • Publication number: 20030070616
    Abstract: An apparatus and method for holding a substrate on a support layer in a processing chamber. The method includes the steps of positioning the substrate a predetermined distance from the support layer, introducing a plasma in the processing chamber, lowering the substrate to a point where the substrate engages the support layer, and maintaining the plasma for a predetermined time. The apparatus is directed to a susceptor system for a processing chamber in which a substrate is electrostatically held essentially flat. The apparatus includes a substrate support and a support layer composed of a dielectric material disposed on the substrate support. At least one lift pin is used for supporting the substrate relative to the support layer. Means are provided for moving each lift pin relative to the support layer. Means are also provided for producing a plasma within the processing chamber.
    Type: Application
    Filed: November 18, 2002
    Publication date: April 17, 2003
    Applicant: Applied Materials, Inc.
    Inventors: Quanyuan Shang, Robert McCormick Robertson, Kam S. Law, James T. Gardner
  • Publication number: 20030066541
    Abstract: A system for processing substrates within a chamber and for cleaning accumulated material from chamber components is provided. The system includes a reactive species generator adapted to generate a reactive gas species for chemically etching accumulated material from chamber components, and a processing chamber having at least one fluoropolymer coated component which is exposed to the reactive species. Preferably to have the greatest impact on chamber cleaning efficiency, the fluoropolymer coated component(s) are large components such as a gas distribution plate or a backing plate, and/or a plurality of smaller components (e.g., a shadow frame, chamber wall liners, a susceptor, a gas conductance line) so as to constitute a large percentage of the surface area exposed to the reactive species. Most preferably all surfaces which the reactive species contacts are coated with fluoropolymer.
    Type: Application
    Filed: November 25, 2002
    Publication date: April 10, 2003
    Inventors: Sheng Sun, Quanyuan Shang, Sanjay Yadav, William R. Harshbarger, Kam S. Law
  • Publication number: 20030010354
    Abstract: A process for removing residue from the interior of a semiconductor process chamber using molecular fluorine gas (F2) as the principal precursor reagent. In one embodiment a portion of the molecular fluorine is decomposed in a plasma to produce atomic fluorine, and the resulting mixture of atomic fluorine and molecular fluorine is supplied to the chamber whose interior is to be cleaned. In another embodiment the molecular fluorine gas cleans the semiconductor process chamber without any plasma excitation. Molecular fluorine gas has the advantage of not being a global warming gas, unlike fluorine-containing gas compounds conventionally used for chamber cleaning such as NF3, C2F6 and SF6.
    Type: Application
    Filed: March 27, 2000
    Publication date: January 16, 2003
    Applicant: APPLIED MATERIALS, INC.
    Inventors: HARUHIRO HARRY GOTO , WILLIAM R HARSHBARGER , QUANYUAN SHANG , KAM S LAW
  • Patent number: 6500265
    Abstract: An apparatus for holding a substrate on a support layer in a processing chamber. The apparatus is directed to a susceptor system for a processing chamber in which a substrate is electrostatically held essentially flat. The apparatus includes a substrate support and a support layer composed of a dielectric material disposed on the substrate support. At least one lift pin is used for supporting the substrate relative to the support layer. A device is provided for moving each lift pin relative to the support layer. A device is also provided for producing a plasma within the processing chamber.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: December 31, 2002
    Assignee: Applied Materials, Inc.
    Inventors: Quanyuan Shang, Robert McCormick Robertson, Kam S. Law, James T. Gardner
  • Patent number: 6500356
    Abstract: A process for selectively etching silicon from a workpiece without etching silicon oxide or silicon nitride. The principal etchant gas is molecular fluorine gas (F2) that is not excited to a plasma state.
    Type: Grant
    Filed: March 27, 2000
    Date of Patent: December 31, 2002
    Assignee: Applied Materials, Inc.
    Inventors: Haruhiro Harry Goto, William R. Harshbarger, Kam S. Law