Patents by Inventor Somchintana Norasetthekul

Somchintana Norasetthekul 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: 10515802
    Abstract: A method may include depositing a mask layer on a substrate using physical vapor deposition, wherein an absolute value of a stress in the mask layer has a first value; and directing a dose of ions into the mask layer, wherein the absolute value of the stress in the mask layer has a second value, less than the first value, after the directing the dose.
    Type: Grant
    Filed: July 9, 2018
    Date of Patent: December 24, 2019
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Rajesh Prasad, Tzu-Yu Liu, Edwin Arevalo, Deven Mittal, Somchintana Norasetthekul, Kyuha Shim, Lauren Liaw, Takaski Shimizu, Nobuyuki Sasaki, Ryuichi Muira, Hiro Ito
  • Publication number: 20190326116
    Abstract: A method may include depositing a mask layer on a substrate using physical vapor deposition, wherein an absolute value of a stress in the mask layer has a first value; and directing a dose of ions into the mask layer, wherein the absolute value of the stress in the mask layer has a second value, less than the first value, after the directing the dose.
    Type: Application
    Filed: July 9, 2018
    Publication date: October 24, 2019
    Applicant: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Rajesh Prasad, Tzu-Yu Liu, Edwin Arevalo, Deven Mittal, Somchintana Norasetthekul, Kyuha Shim, Lauren Liaw, Takaski Shimizu, Nobuyuki Sasaki, Ryuichi Muira, Hiro Ito
  • Patent number: 10332748
    Abstract: As etching processes become more aggressive, increased etch resistivity of the hard mask is desirable. Methods of modulating the etch rate of the mask and optionally the underlying material are disclosed. An etch rate modifying species is implanted into the hard mask after the mask etching process is completed. This etch rate modifying species increases the difference between the etch rate of the mask and the etch rate of the underlying material to help preserve the integrity of the mask during a subsequent etching process. In some embodiments, the etch rate of the mask is decreased by the etch rate modifying species. In certain embodiments, the etch rate of the underlying material is increased by the etch rate modifying species.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: June 25, 2019
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Rajesh Prasad, Steven Robert Sherman, Andrew M. Waite, Sungho Jo, Kyu-Ha Shim, Guy Oteri, Somchintana Norasetthekul
  • Publication number: 20180182636
    Abstract: As etching processes become more aggressive, increased etch resistivity of the hard mask is desirable. Methods of modulating the etch rate of the mask and optionally the underlying material are disclosed. An etch rate modifying species is implanted into the hard mask after the mask etching process is completed. This etch rate modifying species increases the difference between the etch rate of the mask and the etch rate of the underlying material to help preserve the integrity of the mask during a subsequent etching process. In some embodiments, the etch rate of the mask is decreased by the etch rate modifying species. In certain embodiments, the etch rate of the underlying material is increased by the etch rate modifying species.
    Type: Application
    Filed: February 21, 2018
    Publication date: June 28, 2018
    Inventors: Rajesh Prasad, Steven Robert Sherman, Andrew M. Waite, Sungho Jo, Kyu-Ha Shim, Guy Oteri, Somchintana Norasetthekul
  • Patent number: 9934982
    Abstract: As etching processes become more aggressive, increased etch resistivity of the hard mask is desirable. Methods of modulating the etch rate of the mask and optionally the underlying material are disclosed. An etch rate modifying species is implanted into the hard mask after the mask etching process is completed. This etch rate modifying species increases the difference between the etch rate of the mask and the etch rate of the underlying material to help preserve the integrity of the mask during a subsequent etching process. In some embodiments, the etch rate of the mask is decreased by the etch rate modifying species. In certain embodiments, the etch rate of the underlying material is increased by the etch rate modifying species.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: April 3, 2018
    Assignee: Varian Semiconductor Equipment Associates, Inc.
    Inventors: Rajesh Prasad, Steven Robert Sherman, Andrew M. Waite, Sungho Jo, Kyu-Ha Shim, Guy Oteri, Somchintana Norasetthekul
  • Publication number: 20170178914
    Abstract: As etching processes become more aggressive, increased etch resistivity of the hard mask is desirable. Methods of modulating the etch rate of the mask and optionally the underlying material are disclosed. An etch rate modifying species is implanted into the hard mask after the mask etching process is completed. This etch rate modifying species increases the difference between the etch rate of the mask and the etch rate of the underlying material to help preserve the integrity of the mask during a subsequent etching process. In some embodiments, the etch rate of the mask is decreased by the etch rate modifying species. In certain embodiments, the etch rate of the underlying material is increased by the etch rate modifying species.
    Type: Application
    Filed: December 21, 2015
    Publication date: June 22, 2017
    Inventors: Rajesh Prasad, Steven Robert Sherman, Andrew M. Waite, Sungho Jo, Kyu-Ha Shim, Guy Oteri, Somchintana Norasetthekul
  • Patent number: 6440831
    Abstract: A method for depositing an adhesion layer in a contact region on a semiconductor substrate provides for sufficient coverage on the bottom and sidewalls of the contact region. In an example embodiment, a contact region having a bottom and sidewalls has a first coat of the adhesion layer deposited thereon at a thickness greater than the thickness on the sidewall. To compensate for the narrower adhesion layer thickness on the sidewalls, a second coat of the adhesion layer is deposited so that the second coat on the sidewalls is at a thickness greater than the second coat thickness on the bottom. The adhesion layer is titanium nitride although other materials may be used as well.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: August 27, 2002
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Jeffrey Klatt, Somchintana Norasetthekul
  • Publication number: 20020068445
    Abstract: A method for depositing an adhesion layer in a contact region on a semiconductor substrate provides for sufficient coverage on the bottom and sidewalls of the contact region. In an example embodiment, a contact region having a bottom and sidewalls has a first coat of the adhesion layer deposited thereon at a thickness greater than the thickness on the sidewall. To compensate for the narrower adhesion layer thickness on the sidewalls, a second coat of the adhesion layer is deposited so that the second coat on the sidewalls is at a thickness greater than the second coat thickness on the bottom. The adhesion layer is titanium nitride although other materials may be used as well.
    Type: Application
    Filed: December 6, 2000
    Publication date: June 6, 2002
    Applicant: PHILIPS ELECTRONICS NORTH AMERICA CORPORATION
    Inventors: Jeffrey Klatt, Somchintana Norasetthekul
  • Patent number: 5933701
    Abstract: The invention relates to ZrB.sub.2 /Cu composites, and more specifically to methods of making ZrB.sub.2 /Cu composite electrodes and methods of using ZrB.sub.2 /Cu composite electrodes. ZrB.sub.2 powder is contacted with a polymer and shaped to a desired form. The polymer is vaporized and the ZrB/.sub.2 powder is sintered. The sintered ZrB.sub.2 is contacted with Cu and heated above the melting point of Cu which causes the Cu to infiltrate the ZrB.sub.2, forming the ZrB.sub.2 /Cu composite electrode.
    Type: Grant
    Filed: January 19, 1998
    Date of Patent: August 3, 1999
    Assignee: Texas A & M University System
    Inventors: Brent E. Stucker, Walter L. Bradley, Philip T. Eubank, Bedri Bozkurt, Somchintana Norasetthekul
  • Patent number: 5870663
    Abstract: The invention relates to ZrB.sub.2 /Cu composites, and more specifically to methods of making ZrB.sub.2 /Cu composite electrodes and methods of using ZrB.sub.2 /Cu composite electrodes. ZrB.sub.2 powder is contacted with a polymer and shaped to a desired form. The polymer is vaporized and the ZrB.sub.2 powder is sintered. The sintered ZrB.sub.2 is contacted with Cu and heated above the melting point of Cu which causes the Cu to infiltrate the ZrB.sub.2, forming the ZrB.sub.2 /Cu composite electrode.
    Type: Grant
    Filed: August 2, 1996
    Date of Patent: February 9, 1999
    Assignee: The Texas A&M University System
    Inventors: Brent E. Stucker, Walter L. Bradley, Philip T. Eubank, Bedri Bozkurt, Somchintana Norasetthekul