Patents by Inventor Wing-Cheong Lai

Wing-Cheong Lai 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: 20150118409
    Abstract: This invention relates to a method of preparing a coating formulation for processing a release paper and a method of processing a release paper with the coating formulation for use in synthetic leather industry. The coating formulation includes MEMO-surface modified nanoparticles and an acrylate composition. The release paper processed by the coating formulation is found to demonstrate an improved abrasion resistance.
    Type: Application
    Filed: October 25, 2013
    Publication date: April 30, 2015
    Applicant: Nano and Advanced Materials Institute Limited
    Inventors: Mimi Hetti, Wing Cheong Lai, Chui Wan Tse, Chor Keung Cheung, Yin Fai Lee, Yin Man Lai, Wing Yi Kung
  • Patent number: 8821637
    Abstract: Embodiments of the invention provide apparatuses for vapor depositing tungsten-containing materials, such as metallic tungsten and tungsten nitride. In one embodiment, a processing chamber is provided which includes a lid assembly containing a lid plate, a showerhead, a mixing cavity, a distribution cavity, and a resistive heating element contained within the lid plate. In one example, the resistive heating element is configured to provide the lid plate at a temperature within a range from about 120° C. to about 180° C., preferably, from about 140° C. to about 160° C., more preferably, from about 145° C. to about 155° C. The mixing cavity may be in fluid communication with a tungsten precursor source containing tungsten hexafluoride and a nitrogen precursor source containing ammonia. In some embodiments, a single processing chamber may be used to deposit metallic tungsten and tungsten nitride materials by CVD processes.
    Type: Grant
    Filed: January 29, 2008
    Date of Patent: September 2, 2014
    Assignee: Applied Materials, Inc.
    Inventors: Avgerinos V. Gelatos, Sang-Hyeob Lee, Xiaoxiong Yuan, Salvador P. Umotoy, Yu Chang, Gwo-Chuan Tzu, Emily Renuart, Jing Lin, Wing-Cheong Lai, Sang Q. Le
  • Publication number: 20080206987
    Abstract: Embodiments of the invention provide processes for vapor depositing tungsten-containing materials, such as metallic tungsten and tungsten nitride. In one embodiment, a method for forming a tungsten-containing material is provided which includes positioning a substrate within a processing chamber containing a lid plate, heating the lid plate to a temperature within a range from about 120° C. to about 180° C., exposing the substrate to a reducing gas during a pre-nucleation soak process, and depositing a first tungsten nucleation layer on the substrate during a first atomic layer deposition process within the processing chamber. The method further provides depositing a tungsten nitride layer on the first tungsten nucleation layer during a vapor deposition process, depositing a second tungsten nucleation layer on the tungsten nitride layer during a second atomic layer deposition process within the processing chamber, and exposing the substrate to another reducing gas during a post-nucleation soak process.
    Type: Application
    Filed: January 29, 2008
    Publication date: August 28, 2008
    Inventors: Avgerinos V. Gelatos, Sang-Hyeob Lee, Xiaoxiong Yuan, Salvador P. Umotoy, Yu Chang, Gwo-Chuan Tzu, Emily Renuart, Jing Lin, Wing-Cheong Lai, Sang Q. Le
  • Publication number: 20080202425
    Abstract: Embodiments of the invention provide apparatuses for vapor depositing tungsten-containing materials, such as metallic tungsten and tungsten nitride. In one embodiment, a processing chamber is provided which includes a lid assembly containing a lid plate, a showerhead, a mixing cavity, a distribution cavity, and a resistive heating element contained within the lid plate. In one example, the resistive heating element is configured to provide the lid plate at a temperature within a range from about 120° C. to about 180° C., preferably, from about 140° C. to about 160° C., more preferably, from about 145° C. to about 155° C. The mixing cavity may be in fluid communication with a tungsten precursor source containing tungsten hexafluoride and a nitrogen precursor source containing ammonia. In some embodiments, a single processing chamber may be used to deposit metallic tungsten and tungsten nitride materials by CVD processes.
    Type: Application
    Filed: January 29, 2008
    Publication date: August 28, 2008
    Inventors: Avgerinos V. Gelatos, Sang-Hyeob Lee, Xiaoxiong Yuan, Salvador P. Umotoy, Yu Chang, Gwo-Chuan Tzu, Emily Renuart, Jing Lin, Wing-Cheong Lai, Sang Q. Le
  • Publication number: 20070296084
    Abstract: A first layer of titanium nitride (TiN) is formed on a semiconductor structure, such as an interconnect via. Then, a second layer of TiN is formed on the first layer of TiN. The first layer of TiN is amorphous. The second layer of TiN is polycrystalline, having a mixed grain orientation. Finally, an aluminum film is formed on the second layer of titanium nitride. Optionally, a titanium silicide layer is formed on the semiconductor structure prior to the step of forming the first layer of titanium nitride. Interconnects formed according to the invention have polycrystalline aluminum films with grain sizes of approximately less than 0.25 microns.
    Type: Application
    Filed: August 31, 2007
    Publication date: December 27, 2007
    Inventors: Wing-Cheong Lai, Gurtej Sandhu
  • Publication number: 20060194434
    Abstract: A first layer of titanium nitride (TiN) is formed on a semiconductor structure, such as an interconnect via. Then, a second layer of TiN is formed on the first layer of TiN. The first layer of TiN is amorphous. The second layer of TiN is polycrystalline, having a mixed grain orientation. Finally, an aluminum film is formed on the second layer of titanium nitride. Optionally, a titanium silicide layer is formed on the semiconductor structure prior to the step of forming the first layer of titanium nitride. Interconnects formed according to the invention have polycrystalline aluminum films with grain sizes of approximately less than 0.25 microns.
    Type: Application
    Filed: April 27, 2006
    Publication date: August 31, 2006
    Inventors: Wing-Cheong Lai, Gurtei Sandhu
  • Publication number: 20060014386
    Abstract: A first layer of titanium nitride (TiN) is formed on a semiconductor structure, such as an interconnect via. Then, a second layer of TiN is formed on the first layer of TiN. The first layer of TiN is amorphous. The second layer of TiN is polycrystalline, having a mixed grain orientation. Finally, an aluminum film is formed on the second layer of titanium nitride. Optionally, a titanium silicide layer is formed on the semiconductor structure prior to the step of forming the first layer of titanium nitride. Interconnects formed according to the invention have polycrystalline aluminum films with grain sizes of approximately less than 0.25 microns.
    Type: Application
    Filed: September 20, 2005
    Publication date: January 19, 2006
    Inventors: Wing-Cheong Lai, Gurtej Sandhu