Patents by Inventor Stefanie R. Chiras

Stefanie R. Chiras 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: 9081606
    Abstract: A processor includes a processor core, a cache, and a tracker. The processor core is configured to execute persistent write instructions and receive notifications of completed persistent write instructions. The tracker is configured to track the completion state of a persistent write instruction.
    Type: Grant
    Filed: November 13, 2012
    Date of Patent: July 14, 2015
    Assignee: International Business Machines Corporation
    Inventors: Gary D. Carpenter, Stefanie R. Chiras, Alexandre P. Ferreira, Jente B. Kuang, Karthick Rajamani, Freeman L. Rawson, III
  • Patent number: 8897062
    Abstract: Systems, methods, and devices for iteratively writing contents to memory locations are provided. A statistical model is used to determine a sequence of pulses to write desired contents to a memory location. The contents can be expressed as a resistance value in a range to store one or more bits in a memory cell. For phase change memory, an adaptive reset pulse and one or more annealing pulses are selected based on a desired resistance range. Reading the resistance value of the memory cell can provide feedback to determine adjustments in an overall pulse application strategy. The statistical model and a look up table can be used to select and modify pulses. Adaptively updating the statistical model and look up table may reduce the number of looping iterations to shift the resistance value of the memory cell into the desired resistance range.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: November 25, 2014
    Assignee: International Business Machines Corporation
    Inventors: Matthew J. Breitwisch, Roger W. Cheek, Stefanie R. Chiras, Ibrahim M. Elfadel, Michele M. Franceschini, John P. Karidis, Luis A. Lastras-Montano, Thomas Mittelholzer, Mayank Sharma
  • Publication number: 20140136786
    Abstract: A processor includes a processor core, a cache, and a tracker. The processor core is configured to execute persistent write instructions and receive notifications of completed persistent write instructions. The tracker is configured to track the completion state of a persistent write instruction.
    Type: Application
    Filed: November 13, 2012
    Publication date: May 15, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Gary D. Carpenter, Stefanie R. Chiras, Alexandre P. Ferreira, Jente B. Kuang, Karthick Rajamani, Freeman L. Rawson, III
  • Patent number: 8166368
    Abstract: A method for writing in a memory system that includes receiving an address corresponding to a memory location in a memory, receiving a desired content to be written, encoding the desired content into a symbol, and writing the symbol to the memory location using an iterative write process of at least one write and one read to the memory location. The iterative write process includes determining if the symbol was successfully written to the memory location and exiting the iterative write process in response to the symbol being successfully written to the memory location. The iterative write process also includes determining if a halt condition has been met and exiting the iterative write process if the halt condition has been met. Once the iterative write process has been exited, the memory location may be identified as a candidate for being written with a special symbol.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: April 24, 2012
    Assignee: International Business Machines Corporation
    Inventors: Luis A. Lastras-Montano, John P. Karidis, Stefanie R. Chiras, Mayank Sharma, Thomas Mittelholzer, Michele M. Franceschini
  • Publication number: 20110228600
    Abstract: Systems, methods, and devices for iteratively writing contents to memory locations are provided. A statistical model is used to determine a sequence of pulses to write desired contents to a memory location. The contents can be expressed as a resistance value in a range to store one or more bits in a memory cell. For phase change memory, an adaptive reset pulse and one or more annealing pulses are selected based on a desired resistance range. Reading the resistance value of the memory cell can provide feedback to determine adjustments in an overall pulse application strategy. The statistical model and a look up table can be used to select and modify pulses. Adaptively updating the statistical model and look up table may reduce the number of looping iterations to shift the resistance value of the memory cell into the desired resistance range.
    Type: Application
    Filed: June 1, 2011
    Publication date: September 22, 2011
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Matthew J. Breitwisch, Roger W. Cheek, Stefanie R. Chiras, Ibrahim M. Elfadel, Michele M. Franceschini, John P. Karidis, Luis A. Lastras-Montano, Thomas Mittelholzer, Mayank Sharma
  • Patent number: 8023345
    Abstract: Systems, methods, and devices for iteratively writing contents to memory locations are provided. A statistical model is used to determine a sequence of pulses to write desired contents to a memory location. The contents can be expressed as a resistance value in a range to store one or more bits in a memory cell. For phase change memory, an adaptive reset pulse and one or more annealing pulses are selected based on a desired resistance range. Reading the resistance value of the memory cell can provide feedback to determine adjustments in an overall pulse application strategy. The statistical model and a look up table can be used to select and modify pulses. Adaptively updating the statistical model and look up table may reduce the number of looping iterations to shift the resistance value of the memory cell into the desired resistance range.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: September 20, 2011
    Assignee: International Business Machines Corporation
    Inventors: Matthew J. Breitwisch, Roger W. Cheek, Stefanie R. Chiras, Ibrahim M. Elfadel, Michele M. Franceschini, John P. Karidis, Luis A. Lastras-Montano, Thomas Mittelholzer, Mayank Sharma
  • Patent number: 7820559
    Abstract: An interconnect structure in which the adhesion between an upper level low-k dielectric material, such as a material comprising elements of Si, C, O, and H, and an underlying diffusion capping dielectric, such as a material comprising elements of C, Si, N and H, is improved by incorporating an adhesion transition layer between the two dielectric layers. The presence of the adhesion transition layer between the upper level low-k dielectric and the diffusion barrier capping dielectric can reduce the chance of delamination of the interconnect structure during the packaging process. The adhesion transition layer provided herein includes a lower SiOx— or SiON-containing region and an upper C graded region. Methods of forming such a structure, in particularly the adhesion transition layer, are also provided.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: October 26, 2010
    Assignee: International Business Machines Corporation
    Inventors: Lawrence A. Clevenger, Stefanie R. Chiras, Timothy Dalton, James J. Demarest, Darren N. Dunn, Chester T. Dziobkowski, Philip L. Flaitz, Michael W. Lane, James R. Lloyd, Darryl D. Restaino, Thomas M. Shaw, Yun-Yu Wang, Chih-Chao Yang
  • Publication number: 20100218071
    Abstract: A method for writing in a memory system that includes receiving an address corresponding to a memory location in a memory, receiving a desired content to be written, encoding the desired content into a symbol, and writing the symbol to the memory location using an iterative write process of at least one write and one read to the memory location. The iterative write process includes determining if the symbol was successfully written to the memory location and exiting the iterative write process in response to the symbol being successfully written to the memory location. The iterative write process also includes determining if a halt condition has been met and exiting the iterative write process if the halt condition has been met. Once the iterative write process has been exited, the memory location may be identified as a candidate for being written with a special symbol.
    Type: Application
    Filed: February 24, 2009
    Publication date: August 26, 2010
    Applicant: International Business Machines Corporation
    Inventors: Luis A. Lastras-Montano, John P. Karidis, Stefanie R. Chiras, Mayank Sharma, Thomas Mittelholzer, Michele M. Franceschini
  • Publication number: 20100214829
    Abstract: Systems, methods, and devices for iteratively writing contents to memory locations are provided. A statistical model is used to determine a sequence of pulses to write desired contents to a memory location. The contents can be expressed as a resistance value in a range to store one or more bits in a memory cell. For phase change memory, an adaptive reset pulse and one or more annealing pulses are selected based on a desired resistance range. Reading the resistance value of the memory cell can provide feedback to determine adjustments in an overall pulse application strategy. The statistical model and a look up table can be used to select and modify pulses. Adaptively updating the statistical model and look up table may reduce the number of looping iterations to shift the resistance value of the memory cell into the desired resistance range.
    Type: Application
    Filed: February 24, 2009
    Publication date: August 26, 2010
    Applicant: International Business Machines Corporation
    Inventors: Matthew J. Breitwisch, Roger W. Cheek, Stefanie R. Chiras, Ibrahim M. Elfadel, Michele M. Franceschini, John P. Karidis, Luis A. Lastras-Montano, Thomas Mittelholzer, Mayank Sharma
  • Patent number: 7495338
    Abstract: A conducting material comprising: a conducting core region comprising copper and from 0.001 atomic percent to 0.6 atomic percent of one or more metals selected from iridium, osmium and rhenium; and an interfacial region. The interfacial region comprises at least 80 atomic percent or greater of the one or more metals. The invention is also directed to a method of making a conducting material comprising: providing an underlayer; contacting the underlayer with a seed layer, the seed layer comprising copper and one or more metals selected from iridium, osmium and rhenium; depositing a conducting layer comprising copper on the seed layer, and annealing the conducting layer at a temperature sufficient to cause grain growth in the conducting layer, yet minimize the migration of the one or more alloy metals from the seed layer to the conducting layer.
    Type: Grant
    Filed: March 16, 2006
    Date of Patent: February 24, 2009
    Assignee: International Business Machines Corporation
    Inventors: Michael Lane, Stefanie R. Chiras, Terry A. Spooner, Robert Rosenberg, Daniel C. Edelstein
  • Publication number: 20080254643
    Abstract: An interconnect structure in which the adhesion between an upper level low-k dielectric material, such as a material comprising elements of Si, C, O, and H, and an underlying diffusion capping dielectric, such as a material comprising elements of C, Si, N and H, is improved by incorporating an adhesion transition layer between the two dielectric layers. The presence of the adhesion transition layer between the upper level low-k dielectric and the diffusion barrier capping dielectric can reduce the chance of delamination of the interconnect structure during the packaging process. The adhesion transition layer provided herein includes a lower SiOx- or SiON-containing region and an upper C graded region. Methods of forming such a structure, in particularly the adhesion transition layer, are also provided.
    Type: Application
    Filed: June 23, 2008
    Publication date: October 16, 2008
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Lawrence A. Clevenger, Stefanie R. Chiras, Timothy Dalton, James J. Demarest, Darren N. Dunn, Chester T. Dziobkowski, Philip L. Flaitz, Michael W. Lane, James R. Lloyd, Darryl D. Restaino, Thomas M. Shaw, Yun-Yu Wang, Chih-Chao Yang
  • Patent number: 7402532
    Abstract: An interconnect structure in which the adhesion between an upper level low-k dielectric material, such as a material comprising elements of Si, C, O, and H, and an underlying diffusion capping dielectric, such as a material comprising elements of C, Si, N and H, is improved by incorporating an adhesion transition layer between the two dielectric layers. The presence of the adhesion transition layer between the upper level low-k dielectric and the diffusion barrier capping dielectric can reduce the chance of delamination of the interconnect structure during the packaging process. The adhesion transition layer provided herein includes a lower SiOx- or SiON-containing region and an upper C graded region. Methods of forming such a structure, in particularly the adhesion transition layer, are also provided.
    Type: Grant
    Filed: August 4, 2006
    Date of Patent: July 22, 2008
    Assignee: International Business Machines Corporation
    Inventors: Lawrence A. Clevenger, Stefanie R. Chiras, Timothy Dalton, James J. Demarest, Derren N. Dunn, Chester T. Dziobkowski, Philip L. Flaitz, Michael W. Lane, James R. Lloyd, Darryl D. Restaino, Thomas M. Shaw, Yun-Yu Wang, Chih-Chao Yang
  • Patent number: 7217655
    Abstract: A composite material comprising a layer containing copper, and an electrodeposited CoWP film on the copper layer. The CoWP film contains from 11 atom percent to 25 atom percent phosphorus and has a thickness from 5 nm to 200 nm. The invention is also directed to a method of making an interconnect structure comprising: providing a trench or via within a dielectric material, and a conducting metal containing copper within the trench or the via; and forming a CoWP film by electrodeposition on the copper layer. The CoWP film contains from 10 atom percent to 25 atom percent phosphorus and has a thickness from 5 nm to 200 nm. The invention is also directed to a interconnect structure comprising a dielectric layer in contact with a metal layer; an electrodeposited CoWP film on the metal layer, and a copper layer on the CoWP film.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: May 15, 2007
    Assignee: International Business Machines Corporation
    Inventors: Cyril Cabral, Jr., Stefanie R. Chiras, Emanuel I. Cooper, Hariklia Deligianni, Andrew J. Kellock, Judith M. Rubino, Roger Y. Tsai
  • Patent number: 7193323
    Abstract: A composite material comprising a layer containing copper, and an electrodeposited CoWP film on the copper layer. The CoWP film contains from 11 atom percent to 25 atom percent phosphorus and has a thickness from 5 nm to 200 nm. The invention is also directed to a method of making an interconnect structure comprising: providing a trench or via within a dielectric material, and a conducting metal containing copper within the trench or the via; and forming a CoWP film by electrodeposition on the copper layer. The CoWP film contains from 10 atom percent to 25 atom percent phosphorus and has a thickness from 5 nm to 200 nm. The invention is also directed to a interconnect structure comprising a dielectric layer in contact with a metal layer; an electrodeposited CoWP film on the metal layer, and a copper layer on the CoWP film.
    Type: Grant
    Filed: November 18, 2003
    Date of Patent: March 20, 2007
    Assignee: International Business Machines Corporation
    Inventors: Cyril Cabral, Jr., Stefanie R. Chiras, Emanuel Cooper, Hariklia Deligianni, Andrew J. Kellock, Judith M. Rubino, Roger Y. Tsai
  • Patent number: 7119018
    Abstract: A conducting material comprising: a conducting core region comprising copper and from 0.001 atomic percent to 0.6 atomic percent of one or more metals selected from iridium, osmium and rhenium; and an interfacial region. The interfacial region comprises at least 80 atomic percent or greater of the one or more metals. The invention is also directed to a method of making a conducting material comprising: providing an underlayer; contacting the underlayer with a seed layer, the seed layer comprising copper and one or more metals selected from iridium, osmium and rhenium; depositing a conducting layer comprising copper on the seed layer, and annealing the conducting layer at a temperature sufficient to cause grain growth in the conducting layer, yet minimize the migration of the one or more alloy metals from the seed layer to the conducting layer.
    Type: Grant
    Filed: July 9, 2004
    Date of Patent: October 10, 2006
    Assignee: International Buisness Machines Corporation
    Inventors: Michael W. Lane, Stefanie R. Chiras, Terry A. Spooner, Robert Rosenberg, Daniel C. Edelstein
  • Patent number: 7102232
    Abstract: An interconnect structure in which the adhesion between an upper level low-k dielectric material, such as a material comprising elements of Si, C, O, and H, and an underlying diffusion capping dielectric, such as a material comprising elements of C, Si, N and H, is improved by incorporating an adhesion transition layer between the two dielectric layers. The presence of the adhesion transition layer between the upper level low-k dielectric and the diffusion barrier capping dielectric can reduce the chance of delamination of the interconnect structure during the packaging process. The adhesion transition layer provided herein includes a lower SiOx— or SiON-containing region and an upper C graded region. Methods of forming such a structure, in particularly the adhesion transition layer, are also provided.
    Type: Grant
    Filed: April 19, 2004
    Date of Patent: September 5, 2006
    Assignee: International Business Machines Corporation
    Inventors: Lawrence A. Clevenger, Stefanie R. Chiras, Timothy Dalton, James J. Demarest, Derren N. Dunn, Chester T. Dziobkowski, Philip L. Flaitz, Michael W. Lane, James R. Lloyd, Darryl D. Restaino, Thomas M. Shaw, Yun-Yu Wang, Chih-Chao Yang