Patents by Inventor Mohith Verghese

Mohith Verghese 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: 9359672
    Abstract: An atomic deposition (ALD) thin film deposition apparatus includes a deposition chamber configured to deposit a thin film on a wafer mounted within a space defined therein. The deposition chamber comprises a gas inlet that is in communication with the space. A gas system is configured to deliver gas to the gas inlet of the deposition chamber. At least a portion of the gas system is positioned above the deposition chamber. The gas system includes a mixer configured to mix a plurality of gas streams. A transfer member is in fluid communication with the mixer and the gas inlet. The transfer member comprising a pair of horizontally divergent walls configured to spread the gas in a horizontal direction before entering the gas inlet.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: June 7, 2016
    Assignee: ASM America, Inc.
    Inventors: Mohith Verghese, Kyle Fondurulia, Carl White, Eric Shero, Darko Babic, Herbert Terhorst, Marko Peussa, Min Yan
  • Publication number: 20160097121
    Abstract: A vapor deposition method and apparatus including at least two vessels containing a same first source chemical. A controller is programmed to simultaneously pulse to the reaction space doses or pulses of a gas from the vessels, each of the doses having a substantially consistent concentration of the first source chemical. The apparatus may also include at least two vessels containing a same second source chemical. The controller can be programmed to simultaneously pulse to the reaction space doses or pulses of a gas from the vessels containing the second source chemical, each of the doses having a substantially consistent concentration of the second source chemical. The second source chemical can be pulsed to the reaction space after the reaction space is purged of an excess of the first source chemical.
    Type: Application
    Filed: December 11, 2015
    Publication date: April 7, 2016
    Inventors: Christophe Pomarede, Eric Shero, Mohith Verghese, Jan Willem Maes, Chang-Gong Wang
  • Patent number: 9238865
    Abstract: A vapor deposition method and apparatus including at least two vessels containing a same first source chemical. A controller is programmed to simultaneously pulse to the reaction space doses or pulses of a gas from the vessels, each of the doses having a substantially consistent concentration of the first source chemical. The apparatus may also include at least two vessels containing a same second source chemical. The controller can be programmed to simultaneously pulse to the reaction space doses or pulses of a gas from the vessels containing the second source chemical, each of the doses having a substantially consistent concentration of the second source chemical. The second source chemical can be pulsed to the reaction space after the reaction space is purged of an excess of the first source chemical.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: January 19, 2016
    Assignee: ASM IP HOLDING B.V.
    Inventors: Christophe Pomarede, Eric Shero, Mohith Verghese, Jan Willem Maes, Chang-Gong Wang
  • Patent number: 9177784
    Abstract: Embodiments related to methods for forming a film stack on a substrate are provided. One example method comprises exposing the substrate to an activated oxygen species and converting an exposed surface of the substrate into a continuous monolayer of a first dielectric material. The example method also includes forming a second dielectric material on the continuous monolayer of the first dielectric material without exposing the substrate to an air break.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: November 3, 2015
    Assignee: ASM IP Holdings B.V.
    Inventors: Petri Raisanen, Michael Givens, Mohith Verghese
  • Patent number: 9117773
    Abstract: Methods are provided herein for forming thin films comprising oxygen by atomic layer deposition. The thin films comprising oxygen can be deposited by providing higher concentration water pulses, a higher partial pressure of water in the reaction space, and/or a higher flow rate of water to a substrate in a reaction space. Thin films comprising oxygen can be used, for example, as dielectric oxides in transistors, capacitors, integrated circuits, and other semiconductor applications.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: August 25, 2015
    Assignee: ASM America, Inc.
    Inventors: Eric J. Shero, Mohith Verghese, Jan Willem Maes
  • Patent number: 8784563
    Abstract: A system and method for mixing a plurality of gases for an atomic layer deposition (ALD) reactor. The mixer is configured to mix the plurality of gases while minimizing the potential for re-circulation within the mixer. The mixer is further configured to maintain the flow velocity of the plurality of gases as the gases pass through the mixer.
    Type: Grant
    Filed: December 9, 2011
    Date of Patent: July 22, 2014
    Assignee: ASM America, Inc.
    Inventors: Ryan M Schmidt, Mohith Verghese
  • Publication number: 20140159170
    Abstract: Embodiments related to methods for forming a film stack on a substrate are provided. One example method comprises exposing the substrate to an activated oxygen species and converting an exposed surface of the substrate into a continuous monolayer of a first dielectric material. The example method also includes forming a second dielectric material on the continuous monolayer of the first dielectric material without exposing the substrate to an air break.
    Type: Application
    Filed: February 18, 2014
    Publication date: June 12, 2014
    Inventors: Petri Raisanen, Michael Givens, Mohith Verghese
  • Patent number: 8728832
    Abstract: Embodiments related to methods for forming a film stack on a substrate are provided. One example method comprises exposing the substrate to an activated oxygen species and converting an exposed surface of the substrate into a continuous monolayer of a first dielectric material. The example method also includes forming a second dielectric material on the continuous monolayer of the first dielectric material without exposing the substrate to an air break.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: May 20, 2014
    Assignee: ASM IP Holdings B.V.
    Inventors: Petri Raisanen, Michael Givens, Mohith Verghese
  • Publication number: 20130292807
    Abstract: Embodiments related to methods for forming a film stack on a substrate are provided. One example method comprises exposing the substrate to an activated oxygen species and converting an exposed surface of the substrate into a continuous monolayer of a first dielectric material. The example method also includes forming a second dielectric material on the continuous monolayer of the first dielectric material without exposing the substrate to an air break.
    Type: Application
    Filed: May 7, 2012
    Publication date: November 7, 2013
    Applicant: ASM IP HOLDINGS B.V.
    Inventors: Petri Raisanen, Michael Givens, Mohith Verghese
  • Publication number: 20130203267
    Abstract: A vapor deposition method and apparatus including at least two vessels containing a same first source chemical. A controller is programmed to simultaneously pulse to the reaction space doses or pulses of a gas from the vessels, each of the doses having a substantially consistent concentration of the first source chemical. The apparatus may also include at least two vessels containing a same second source chemical. The controller can be programmed to simultaneously pulse to the reaction space doses or pulses of a gas from the vessels containing the second source chemical, each of the doses having a substantially consistent concentration of the second source chemical. The second source chemical can be pulsed to the reaction space after the reaction space is purged of an excess of the first source chemical.
    Type: Application
    Filed: February 6, 2012
    Publication date: August 8, 2013
    Applicant: ASM IP HOLDING B.V.
    Inventors: Christophe Pomarede, Eric Shero, Mohith Verghese, Jan Willem Maes, Chang-Gong Wang
  • Patent number: 8465801
    Abstract: A system and method for mixing a plurality of gases for an atomic layer deposition (ALD) reactor. The mixer is configured to mix the plurality of gases while minimizing the potential for re-circulation within the mixer. The mixer is further configured to maintain the flow velocity of the plurality of gases as the gases pass through the mixer.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: June 18, 2013
    Assignee: ASM America, Inc.
    Inventors: Ryan M. Schmidt, Mohith Verghese
  • Patent number: 8309173
    Abstract: An apparatus and method improves heating of a solid precursor inside a sublimation vessel. In one embodiment, inert, thermally conductive elements are interspersed among units of solid precursor. For example the thermally conductive elements can comprise a powder, beads, rods, fibers, etc. In one arrangement, microwave energy can directly heat the thermally conductive elements.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: November 13, 2012
    Assignee: ASM International N.V.
    Inventors: Marko Tuominen, Eric Shero, Mohith Verghese
  • Publication number: 20120266821
    Abstract: An atomic deposition (ALD) thin film deposition apparatus includes a deposition chamber configured to deposit a thin film on a wafer mounted within a space defined therein. The deposition chamber comprises a gas inlet that is in communication with the space. A gas system is configured to deliver gas to the gas inlet of the deposition chamber. At least a portion of the gas system is positioned above the deposition chamber. The gas system includes a mixer configured to mix a plurality of gas streams. A transfer member is in fluid communication with the mixer and the gas inlet. The transfer member comprising a pair of horizontally divergent walls configured to spread the gas in a horizontal direction before entering the gas inlet.
    Type: Application
    Filed: June 21, 2012
    Publication date: October 25, 2012
    Applicant: ASM America, Inc.
    Inventors: Mohith Verghese, Kyle Fondurulia, Carl White, Eric Shero, Darko Babic, Herbert Terhorst, Marko Peussa, Min Yan
  • Patent number: 8293658
    Abstract: Methods and structures relating to the formation of mixed SAMs for preventing undesirable growth or nucleation on exposed surfaces inside a reactor are described. A mixed SAM can be formed on surfaces for which nucleation is not desired by introducing a first SAM precursor having molecules of a first length and a second SAM precursor having molecules of a second length shorter than the first. Examples of exposed surfaces for which a mixed SAM can be provided over include reactor surfaces and select surfaces of integrated circuit structures, such as insulator and dielectric layers.
    Type: Grant
    Filed: February 17, 2010
    Date of Patent: October 23, 2012
    Assignee: ASM America, Inc.
    Inventors: Eric Shero, Mohith Verghese, Anthony Muscat, Shawn Miller
  • Patent number: 8211230
    Abstract: An atomic deposition (ALD) thin film deposition apparatus includes a deposition chamber configured to deposit a thin film on a wafer mounted within a space defined therein. The deposition chamber comprises a gas inlet that is in communication with the space. A gas system is configured to deliver gas to the gas inlet of the deposition chamber. At least a portion of the gas system is positioned above the deposition chamber. The gas system includes a mixer configured to mix a plurality of gas streams. A transfer member is in fluid communication with the mixer and the gas inlet. The transfer member comprising a pair of horizontally divergent walls configured to spread the gas in a horizontal direction before entering the gas inlet.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: July 3, 2012
    Assignee: ASM America, Inc.
    Inventors: Mohith Verghese, Kyle Fondurulia, Carl White, Eric Shero, Darko Babic, Herbert Terhorst, Marko Peussa, Min Yan
  • Patent number: 8152922
    Abstract: A system and method for mixing a plurality of gases for an atomic layer deposition (ALD) reactor. The mixer is configured to mix the plurality of gases while minimizing the potential for re-circulation within the mixer. The mixer is further configured to maintain the flow velocity of the plurality of gases as the gases pass through the mixer.
    Type: Grant
    Filed: August 30, 2004
    Date of Patent: April 10, 2012
    Assignee: ASM America, Inc.
    Inventors: Ryan M. Schmidt, Mohith Verghese
  • Publication number: 20120079984
    Abstract: A system and method for mixing a plurality of gases for an atomic layer deposition (ALD) reactor. The mixer is configured to mix the plurality of gases while minimizing the potential for re-circulation within the mixer. The mixer is further configured to maintain the flow velocity of the plurality of gases as the gases pass through the mixer.
    Type: Application
    Filed: December 9, 2011
    Publication date: April 5, 2012
    Applicant: ASM America, Inc.
    Inventors: Ryan M. Schmidt, Mohith Verghese
  • Publication number: 20110198736
    Abstract: Methods and structures relating to the formation of mixed SAMs for preventing undesirable growth or nucleation on exposed surfaces inside a reactor are described. A mixed SAM can be formed on surfaces for which nucleation is not desired by introducing a first SAM precursor having molecules of a first length and a second SAM precursor having molecules of a second length shorter than the first. Examples of exposed surfaces for which a mixed SAM can be provided over include reactor surfaces and select surfaces of integrated circuit structures, such as insulator and dielectric layers.
    Type: Application
    Filed: February 17, 2010
    Publication date: August 18, 2011
    Applicant: ASM America, Inc.
    Inventors: ERIC SHERO, Mohith Verghese, Anthony Muscat, Shawn Miller
  • Publication number: 20110076402
    Abstract: An apparatus and method improves heating of a solid precursor inside a sublimation vessel. In one embodiment, inert, thermally conductive elements are interspersed among units of solid precursor. For example the thermally conductive elements can comprise a powder, beads, rods, fibers, etc. In one arrangement, microwave energy can directly heat the thermally conductive elements.
    Type: Application
    Filed: December 9, 2010
    Publication date: March 31, 2011
    Applicant: ASM INTERNATIONAL N.V.
    Inventors: Marko Tuominen, Eric Shero, Mohith Verghese
  • Patent number: 7914847
    Abstract: Protective layers are formed on a surface of an atomic layer deposition (ALD) or chemical vapor deposition (CVD) reactor. Parts defining a reaction space for an ALD or CVD reactor can be treated, in situ or ex situ, with chemicals that deactivate reactive sites on the reaction space surface(s). A pre-treatment step can maximize the available reactive sites prior to the treatment step. With reactive sites deactivated by adsorbed treatment reactant, during subsequent processing the reactant gases have reduced reactivity or deposition upon these treated surfaces. Accordingly, purge steps can be greatly shortened and a greater number of runs can be conducted between cleaning steps to remove built-up deposition on the reactor walls.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: March 29, 2011
    Assignee: ASM America, Inc.
    Inventors: Mohith Verghese, Eric J. Shero