Patents by Inventor Shrikant Lohokare

Shrikant Lohokare 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: 8277675
    Abstract: An apparatus, system and method for removing a damaged material from a low-k dielectric film layer include identifying a control chemistry, the control chemistry configured to selectively remove the damaged material from the low-k dielectric film layer, the damaged material being in a region where a feature was formed through the low-k dielectric film layer; establishing a plurality of process parameters characterizing aspects of the damaged material to be removed and applying the control chemistry to the low-k dielectric film layer, the application of the control chemistry being defined based on the established process parameters of the damaged material, such that the damaged material is substantially removed from the areas around the feature and the areas around the feature are substantially defined by low-k characteristics of the low-k dielectric film layer.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: October 2, 2012
    Assignee: Lam Research Corporation
    Inventors: Seokmin Yun, Seong Hwan Cho, Shrikant Lohokare, Mark Wilcoxson, John M. De Larios, Stephan Hoffmann
  • Patent number: 7380982
    Abstract: A temperature sensing component enables accurate in situ temperature measurement. The temperature sensing component is disposed within the process chamber. The temperature sensing component has a cavity, in which a transparent cover is disposed over an opening of the cavity. A material is disposed within the cavity of the temperature sensing component, and a sensor is configured to sense a phase change of the material through the transparent cover.
    Type: Grant
    Filed: April 1, 2005
    Date of Patent: June 3, 2008
    Assignee: Lam Research Corporation
    Inventor: Shrikant Lohokare
  • Publication number: 20080025370
    Abstract: A temperature sensing component enables accurate in situ temperature measurement. The temperature sensing component is disposed within the process chamber. The temperature sensing component has a cavity, in which a transparent cover is disposed over an opening of the cavity. A material is disposed within the cavity of the temperature sensing component, and a sensor is configured to sense a phase change of the material through the transparent cover.
    Type: Application
    Filed: April 1, 2005
    Publication date: January 31, 2008
    Applicant: Lam Research Corporation
    Inventor: Shrikant Lohokare
  • Publication number: 20070190771
    Abstract: A system and method for forming a planar dielectric layer includes identifying a non-planarity in the dielectric layer, forming one or more additional dielectric layers over the dielectric layer and planarizing at least one of the additional dielectric layers wherein the one or more additional dielectric layers include at least one of a spin-on-glass layer and at least one of a low-k dielectric material layer and wherein each one of the one or more additional dielectric layers having a thickness of less than about 1000 angstroms and wherein the one or more additional dielectric layers has a total thickness of between about 1000 and about 4000 angstroms.
    Type: Application
    Filed: April 3, 2007
    Publication date: August 16, 2007
    Applicant: LAM RESEARCH CORPORATION
    Inventors: Andrew Bailey, Shrikant Lohokare
  • Publication number: 20060219267
    Abstract: A method for cleaning a processing chamber that includes heating an inner surface of the processing chamber to a first temperature. The first temperature can be sufficient to cause a first species to become volatile. The first species can be one of several species deposited on the inner surface. A cleaning chemistry is injected into the processing chamber. The cleaning chemistry can be reactive with a second one of the species to convert the second species to the first species. The volatilized first species can also be output from the processing chamber. A system for cleaning the process chamber is also described.
    Type: Application
    Filed: May 31, 2006
    Publication date: October 5, 2006
    Applicant: LAM RESEARCH CORPORATION
    Inventors: Andrew Bailey, Shrikant Lohokare, Arthur Howald, Yunsang Kim
  • Publication number: 20060130758
    Abstract: In a plasma processing system, a method of reducing byproduct deposits on a set of plasma chamber surfaces of a plasma processing chamber is disclosed. The method includes providing a deposition barrier in the plasma processing chamber, the deposition barrier is configured to be disposed in a plasma generating region of the plasma processing chamber, thereby permitting at least some process byproducts produced when a plasma is struck within the plasma processing chamber to adhere to the deposition barrier and reducing the byproduct deposits on the set of plasma processing chamber surfaces.
    Type: Application
    Filed: December 22, 2004
    Publication date: June 22, 2006
    Inventors: Shrikant Lohokare, Andrew Bailey
  • Publication number: 20050194355
    Abstract: An apparatus and method for adjusting the voltage applied to a Faraday shield of an inductively coupled plasma etching apparatus is provided. An appropriate voltage is easily and variably applied to a Faraday shield such that sputtering of a plasma can be controlled to prevent and mitigate deposition of non-volatile reaction products that adversely affect an etching process. The appropriate voltage for a particular etching process or step is applied to the Faraday shield by simply adjusting a tuning capacitor. It is not necessary to mechanically reconfigure the etching apparatus to adjust the Faraday shield voltage.
    Type: Application
    Filed: April 19, 2005
    Publication date: September 8, 2005
    Applicant: Lam Research Corporation
    Inventors: Shrikant Lohokare, Andras Kuthi, Andrew Bailey
  • Publication number: 20050106848
    Abstract: A system and method for forming a semiconductor in a dual damascene structure including receiving a patterned semiconductor substrate. The semiconductor substrate having a first conductive interconnect material filling multiple features in the pattern. The first conductive interconnect material having an overburden portion. The over burden portion is planarized. The over burden portion is substantially entirely removed in the planarizing process. A mask layer is reduced and a subsequent dielectric layer is formed on the planarized over burden portion. A mask is formed on the subsequent dielectric layer. One or more features are formed in the subsequent dielectric layer and the features are filled with a second conductive interconnect material.
    Type: Application
    Filed: January 30, 2004
    Publication date: May 19, 2005
    Applicant: LAM RESEARCH CORPORATION
    Inventors: Andrew Bailey, Shrikant Lohokare
  • Publication number: 20050093012
    Abstract: A method for cleaning a processing chamber that includes heating an inner surface of the processing chamber to a first temperature. The first temperature can be sufficient to cause a first species to become volatile. The first species can be one of several species deposited on the inner surface. A cleaning chemistry is injected into the processing chamber. The cleaning chemistry can be reactive with a second one of the species to convert the second species to the first species. The volatilized first species can also be output from the processing chamber. A system for cleaning the process chamber is also described.
    Type: Application
    Filed: March 16, 2004
    Publication date: May 5, 2005
    Applicant: LAM RESEARCH CORPORATION
    Inventors: Andrew Bailey, Shrikant Lohokare, Arthur Howald, Yunsang Kim
  • Publication number: 20050087759
    Abstract: A system and method of passivating an exposed conductive material includes placing a substrate in a process chamber and injecting a hydrogen species into the process chamber. A hydrogen species plasma is formed in the process chamber. A surface layer species is reduced from a top surface of the substrate is reduced. The reduced surface layer species are purged from the process chamber.
    Type: Application
    Filed: January 30, 2004
    Publication date: April 28, 2005
    Applicant: LAM RESEARCH CORPORATION
    Inventors: Andrew Bailey, Shrikant Lohokare