Patents by Inventor Bachir Dirahoui

Bachir Dirahoui 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: 10573526
    Abstract: A plasma processing apparatus for reactive ion etching a wafer includes a wafer chuck within a chamber and an electrode for creating a plasma within the chamber above the wafer chuck. There is provided on the wafer chuck a semiconductor wafer having a p? layer and an n+ layer. Both p? and n+ layers have exposed peripheral edges. Also provided is an anode comprising the plasma, a cathode comprising the wafer chuck, and a gate comprising the peripheral edge of the n+ layer. A coating layer is formed on a portion of the peripheral edge of the n+ layer. The coating layer reduces charge flow to a portion of the semiconductor wafer below the coating layer.
    Type: Grant
    Filed: September 15, 2016
    Date of Patent: February 25, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Sunit S. Mahajan, Bachir Dirahoui, Richard Wise
  • Publication number: 20170076951
    Abstract: A plasma processing apparatus for reactive ion etching a wafer includes a wafer chuck within a chamber and an electrode for creating a plasma within the chamber above the wafer chuck. There is provided on the wafer chuck a semiconductor wafer having a p? layer and an n+ layer. Both p? and n+ layers have exposed peripheral edges. Also provided is an anode comprising the plasma, a cathode comprising the wafer chuck, and a gate comprising the peripheral edge of the n+ layer. A coating layer is formed on a portion of the peripheral edge of the n+ layer. The coating layer reduces charge flow to a portion of the semiconductor wafer below the coating layer.
    Type: Application
    Filed: September 15, 2016
    Publication date: March 16, 2017
    Inventors: Sunit S. Mahajan, Bachir Dirahoui, Richard Wise
  • Patent number: 9496148
    Abstract: A method of reactive ion etching a wafer includes providing a plasma processing tool having a wafer chuck within a chamber and an electrode creating a plasma above the wafer chuck. There is provided on the wafer chuck a semiconductor wafer having a p? layer and an n+ layer. Both p? and n+ layers have exposed peripheral edges during plasma etching to electrically form with the plasma processing tool during plasma etching a diode having an anode comprising the plasma, a cathode comprising the wafer chuck and a gate comprising the n+ layer peripheral edge. The method includes controlling charge flow during plasma etching adjacent the peripheral edge of the n+ layer to reduce charge transport into, within and out of the semiconductor wafer adjacent the n+ layer edge, and reactive ion etching the n+ layer while controlling the charge flow along the edge of the n+ layer.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: November 15, 2016
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Sunit S. Mahajan, Bachir Dirahoui, Richard Wise
  • Patent number: 9087927
    Abstract: A trench structure that in one embodiment includes a trench present in a substrate, and a dielectric layer that is continuously present on the sidewalls and base of the trench. The dielectric layer has a dielectric constant that is greater than 30. The dielectric layer is composed of tetragonal phase hafnium oxide with silicon present in the grain boundaries of the tetragonal phase hafnium oxide in an amount ranging from 3 wt. % to 20 wt. %.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: July 21, 2015
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Michael P. Chudzik, Bachir Dirahoui, Rishikesh Krishnan, Siddarth A. Krishnan, Oh-jung Kwon, Paul C. Parries, Hongwen Yan
  • Publication number: 20150044853
    Abstract: A trench structure that in one embodiment includes a trench present in a substrate, and a dielectric layer that is continuously present on the sidewalls and base of the trench. The dielectric layer has a dielectric constant that is greater than 30. The dielectric layer is composed of tetragonal phase hafnium oxide with silicon present in the grain boundaries of the tetragonal phase hafnium oxide in an amount ranging from 3 wt. % to 20 wt. %.
    Type: Application
    Filed: October 23, 2014
    Publication date: February 12, 2015
    Inventors: Michael P. Chudzik, Bachir Dirahoui, Rishikesh Krishnan, Siddarth A. Krishnan, Oh-jung Kwon, Paul C. Parries, Hongwen Yan
  • Patent number: 8901706
    Abstract: A trench structure that in one embodiment includes a trench present in a substrate, and a dielectric layer that is continuously present on the sidewalls and base of the trench. The dielectric layer has a dielectric constant that is greater than 30. The dielectric layer is composed of tetragonal phase hafnium oxide with silicon present in the grain boundaries of the tetragonal phase hafnium oxide in an amount ranging from 3 wt. % to 20 wt. %.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: December 2, 2014
    Assignee: International Business Machines Corporation
    Inventors: Michael P. Chudzik, Bachir Dirahoui, Rishikesh Krishnan, Siddarth A. Krishnan, Oh-jung Kwon, Paul C. Parries, Hongwen Yan
  • Publication number: 20130175665
    Abstract: A trench structure that in one embodiment includes a trench present in a substrate, and a dielectric layer that is continuously present on the sidewalls and base of the trench. The dielectric layer has a dielectric constant that is greater than 30. The dielectric layer is composed of tetragonal phase hafnium oxide with silicon present in the grain boundaries of the tetragonal phase hafnium oxide in an amount ranging from 3 wt. % to 20 wt. %.
    Type: Application
    Filed: January 6, 2012
    Publication date: July 11, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Michael P. Chudzik, Bachir Dirahoui, Rishikesh Krishnan, Siddarth A. Krishnan, Oh-jung Kwon, Paul C. Parries, Hongwen Yan
  • Patent number: 7790553
    Abstract: Methods for forming high performance gates in MOSFETs and structures thereof are disclosed. One embodiment includes a method including providing a substrate including a first short channel active region, a second short channel active region and a long channel active region, each active region separated from another by a shallow trench isolation (STI); and forming a field effect transistor (FET) with a polysilicon gate over the long channel active region, a first dual metal gate FET having a first work function adjusting material over the first short channel active region and a second dual metal gate FET having a second work function adjusting material over the second short channel active region, wherein the first and second work function adjusting materials are different.
    Type: Grant
    Filed: July 10, 2008
    Date of Patent: September 7, 2010
    Assignee: International Business Machines Corporation
    Inventors: Huilong Zhu, Xiaomeng Chen, Mahender Kumar, Brian J. Greene, Bachir Dirahoui, Jay W. Strane, Gregory G. Freeman
  • Publication number: 20100006926
    Abstract: Methods for forming high performance gates in MOSFETs and structures thereof are disclosed. One embodiment includes a method including providing a substrate including a first short channel active region, a second short channel active region and a long channel active region, each active region separated from another by a shallow trench isolation (STI); and forming a field effect transistor (FET) with a polysilicon gate over the long channel active region, a first dual metal gate FET having a first work function adjusting material over the first short channel active region and a second dual metal gate FET having a second work function adjusting material over the second short channel active region, wherein the first and second work function adjusting materials are different.
    Type: Application
    Filed: July 10, 2008
    Publication date: January 14, 2010
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: HUILONG ZHU, Xiaomeng Chen, Mahender Kumar, Brian J. Greene, Bachir Dirahoui, Jay W. Strane, Gregory G. Freeman
  • Publication number: 20090256207
    Abstract: Disclosed herein is a transistor comprising a first fin having a first gate electrode disposed across the first fin; the gate electrode contacting opposing surfaces of the fin; and a planar oxide layer having a second gate electrode disposed across the planar oxide layer to form a planar metal oxide semiconductor field effect transistor; the first fin and the planar oxide layer being disposed upon a surface of a wafer.
    Type: Application
    Filed: April 14, 2008
    Publication date: October 15, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Xiaomeng Chen, Bachir Dirahoui, William K. Henson, Michael D. Hulvey, Amit Kumar, Mahender Kumar, Amanda L. Tessier, Clement H. Wann
  • Patent number: 7358130
    Abstract: A process implementing steps for determining encroachment of a spacer structure in a semiconductor device having thick and thin spacer regions, including a transition region formed therebetween. The method steps comprise: obtaining a line width roughness (LWR) measurement at at least one location along each thick, thin and transition spacer regions; determining a threshold LWR measurement value based on the LWR measurements; defining a region of interest (ROI) and obtaining a further LWR measurement in the ROI; comparing the LWR measurement in the ROI against the threshold LWR measurement value; and, notifying a user that either encroachment of the spacer structure is present when the LWR measurement in the ROI is below the threshold LWR measurement value, or that no encroachment of the spacer structure is present when the LWR measurement in the ROI is above the threshold LWR measurement value.
    Type: Grant
    Filed: July 7, 2006
    Date of Patent: April 15, 2008
    Assignee: International Business Machines Corporation
    Inventors: Bachir Dirahoui, Renee T. Mo, Ravikumar Ramachandran, Eric P. Solecky
  • Publication number: 20060252197
    Abstract: A process implementing steps for determining encroachment of a spacer structure in a semiconductor device having thick and thin spacer regions, including a transition region formed therebetween. The method steps comprise: obtaining a line width roughness (LWR) measurement at at least one location along each thick, thin and transition spacer regions; determining a threshold LWR measurement value based on the LWR measurements; defining a region of interest (ROI) and obtaining a further LWR measurement in the ROI; comparing the LWR measurement in the ROI against the threshold LWR measurement value; and, notifying a user that either encroachment of the spacer structure is present when the LWR measurement in the ROI is below the threshold LWR measurement value, or that no encroachment of the spacer structure is present when the LWR measurement in the ROI is above the threshold LWR measurement value.
    Type: Application
    Filed: July 7, 2006
    Publication date: November 9, 2006
    Applicant: INTERNATIONAL BUSINESS MACHINE CORPORATION
    Inventors: Bachir Dirahoui, Renee Mo, Ravikumar Ramachandran, Eric Solecky
  • Patent number: 7105398
    Abstract: A process implementing steps for determining encroachment of a spacer structure in a semiconductor device having thick and thin spacer regions, including a transition region formed therebetween. The method steps comprise: obtaining a line width roughness (LWR) measurement at at least one location along each thick, thin and transition spacer regions; determining a threshold LWR measurement value based on the LWR measurements; defining a region of interest (ROI) and obtaining a further LWR measurement in the ROI; comparing the LWR measurement in the ROI against the threshold LWR measurement value; and, notifying a user that either encroachment of the spacer structure is present when the LWR measurement in the ROI is below the threshold LWR measurement value, or that no encroachment of the spacer structure is present when the LWR measurement in the ROI is above the threshold LWR measurement value.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: September 12, 2006
    Assignee: International Business Machines Corporation
    Inventors: Bachir Dirahoui, Renee T. Mo, Ravikumar Ramachandran, Eric P. Solecky
  • Publication number: 20060055393
    Abstract: A process implementing steps for determining encroachment of a spacer structure in a semiconductor device having thick and thin spacer regions, including a transition region formed therebetween. The method steps comprise: obtaining a line width roughness (LWR) measurement at at least one location along each thick, thin and transition spacer regions; determining a threshold LWR measurement value based on the LWR measurements; defining a region of interest (ROI) and obtaining a further LWR measurement in the ROI; comparing the LWR measurement in the ROI against the threshold LWR measurement value; and, notifying a user that either encroachment of the spacer structure is present when the LWR measurement in the ROI is below the threshold LWR measurement value, or that no encroachment of the spacer structure is present when the LWR measurement in the ROI is above the threshold LWR measurement value.
    Type: Application
    Filed: September 16, 2004
    Publication date: March 16, 2006
    Applicant: International Business Machines Corporation
    Inventors: Bachir Dirahoui, Renee Mo, Ravikumar Ramachandran, Eric Solecky
  • Publication number: 20040259303
    Abstract: An integrated circuit employing CMOS technology employs a process integration that combines a source/drain silicide with a replacement gate process using a triple layer hardmask that is consumed during the course of processing in which a first temporary gate sidewall spacer defines an area for the formation of the raised source and drain and a second temporary spacer defines an area for the implant of the source and drain and for the siliciding of the source and drain while the temporary gate is protected from silicidaiton by the hardmask.
    Type: Application
    Filed: July 19, 2004
    Publication date: December 23, 2004
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Byoung Hun Lee, Bachir Dirahoui, Effendi Leobandung, Tai-Chi Su
  • Patent number: 6800530
    Abstract: An integrated circuit employing CMOS technology employs a process integration that combines a source/drain silicide with a replacement gate process using a triple layer hardmask that is consumed during the course of processing in which a first temporary gate sidewall spacer defines an area for the formation of the raised source and drain and a second temporary spacer defines an area for the implant of the source and drain and for the siliciding of the source and drain while the temporary gate is protected from silicidaiton by the hardmask.
    Type: Grant
    Filed: January 14, 2003
    Date of Patent: October 5, 2004
    Assignee: International Business Machines Corporation
    Inventors: Byoung Hun Lee, Bachir Dirahoui, Effendi Leobandung, Tai-Chi Su
  • Publication number: 20040137672
    Abstract: An integrated circuit employing CMOS technology employs a process integration that combines a source/drain silicide with a replacement gate process using a triple layer hardmask that is consumed during the course of processing in which a first temporary gate sidewall spacer defines an area for the formation of the raised source and drain and a second temporary spacer defines an area for the implant of the source and drain and for the siliciding of the source and drain while the temporary gate is protected from silicidaiton by the hardmask.
    Type: Application
    Filed: January 14, 2003
    Publication date: July 15, 2004
    Applicant: International Business Machines Corporation
    Inventors: Byoung Hun Lee, Bachir Dirahoui, Effendi Leobandung, Tai-Chi Su
  • Patent number: 6492259
    Abstract: A semiconductor device having a planar integrated circuit interconnect and process of fabrication. The planar integrated circuit comprises a substrate having a first line wire formed in the substrate, a dielectric layer formed on the substrate, a second line wire formed in the dielectric layer, a contact via formed within the dielectric layer extending through the dielectric layer from the second line wire to the first line wire, and a dummy via which extends into the dielectric layer and is filled with a low dielectric material.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: December 10, 2002
    Assignee: International Business Machines Corporation
    Inventors: Bachir Dirahoui, Daniel C. Edelstein, Robert C. Greenlese, Harris C. Jones
  • Publication number: 20010054766
    Abstract: A semiconductor device having a planar integrated circuit interconnect and process of fabrication. The planar integrated circuit comprises a substrate having a first line wire formed in the substrate, a dielectric layer formed on the substrate, a second line wire formed in the dielectric layer, a contact via formed within the dielectric layer extending through the dielectric layer from the second line wire to the first line wire, and a dummy via which extends into the dielectric layer and is filled with a low dielectric material.
    Type: Application
    Filed: July 19, 2001
    Publication date: December 27, 2001
    Inventors: Bachir Dirahoui, Daniel C. Edelstein, Robert C. Greenlese, Harris C. Jones
  • Patent number: 6281583
    Abstract: A semiconductor device having a planar integrated circuit interconnect and process of fabrication. The planar integrated circuit comprises a substrate having a first line wire formed in the substrate, a dielectric layer formed on the substrate, a second line wire formed in the dielectric layer, a contact via formed within the dielectric layer extending through the dielectric layer from the second line wire to the first line wire, and a dummy via which extends into the dielectric layer and is filled with a low dielectric material.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: August 28, 2001
    Assignee: International Business Machines Corporation
    Inventors: Bachir Dirahoui, Daniel C. Edelstein, Robert C. Greenlese, Harris C. Jones