Patents by Inventor Stephen Tang

Stephen Tang 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: 11615844
    Abstract: Disclosed herein is a memory cell. The memory cell may act both as a combined selector device and memory element. The memory cell may be programmed by applying write pulses having different polarities. Different polarities of the write pulses may program different logic states into the memory cell. The memory cell may be read by read pulses all having the same polarity. The logic state of the memory cell may be detected by observing different threshold voltages when the read pulses are applied. The different threshold voltages may be responsive to the different polarities of the write pulses.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: March 28, 2023
    Assignee: MICRON TECHNOLOGY, INC.
    Inventors: Innocenzo Tortorelli, Stephen Tang, Christina Papagianni
  • Publication number: 20220013173
    Abstract: Disclosed herein is a memory cell. The memory cell may act both as a combined selector device and memory element. The memory cell may be programmed by applying write pulses having different polarities. Different polarities of the write pulses may program different logic states into the memory cell. The memory cell may be read by read pulses all having the same polarity. The logic state of the memory cell may be detected by observing different threshold voltages when the read pulses are applied. The different threshold voltages may be responsive to the different polarities of the write pulses.
    Type: Application
    Filed: July 22, 2021
    Publication date: January 13, 2022
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Innocenzo Tortorelli, Stephen Tang, Christina Papagianni
  • Patent number: 11100991
    Abstract: Example subject matter disclosed herein relates to apparatuses and/or devices, and/or various methods for use therein, in which an application of an electric potential to a circuit may be initiated and subsequently changed in response to a determination that a snapback event has occurred in a circuit. For example, a circuit may comprise a memory cell that may experience a snapback event as a result of an applied electric potential. In certain example implementations, a sense circuit may be provided which is responsive to a snapback event occurring in a memory cell to generate a feed back signal to initiate a change in an electric potential applied to the memory cell.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: August 24, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Jeremy Miles Hirst, Hernan A. Castro, Stephen Tang
  • Patent number: 11081173
    Abstract: Embodiments disclosed herein may relate to electrically conductive vias in cross-point memory array devices. In an embodiment, the vias may be formed using a lithographic operation also utilized to form electrically conductive lines in a first electrode layer of the cross-point memory array device.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: August 3, 2021
    Assignee: Micron Technology, Inc.
    Inventor: Stephen Tang
  • Patent number: 11074971
    Abstract: Disclosed herein is a memory cell. The memory cell may act both as a combined selector device and memory element. The memory cell may be programmed by applying write pulses having different polarities. Different polarities of the write pulses may program different logic states into the memory cell. The memory cell may be read by read pulses all having the same polarity. The logic state of the memory cell may be detected by observing different threshold voltages when the read pulses are applied. The different threshold voltages may be responsive to the different polarities of the write pulses.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: July 27, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Innocenzo Tortorelli, Stephen Tang, Christina Papagianni
  • Publication number: 20200219562
    Abstract: Example subject matter disclosed herein relates to apparatuses and/or devices, and/or various methods for use therein, in which an application of an electric potential to a circuit may be initiated and subsequently changed in response to a determination that a snapback event has occurred in a circuit. For example, a circuit may comprise a memory cell that may experience a snapback event as a result of an applied electric potential. In certain example implementations, a sense circuit may be provided which is responsive to a snapback event occurring in a memory cell to generate a feed back signal to initiate a change in an electric potential applied to the memory cell.
    Type: Application
    Filed: March 20, 2020
    Publication date: July 9, 2020
    Inventors: Jeremy Miles Hirst, Hernan A. Castro, Stephen Tang
  • Patent number: 10636483
    Abstract: Example subject matter disclosed herein relates to apparatuses and/or devices, and/or various methods for use therein, in which an application of an electric potential to a circuit may be initiated and subsequently changed in response to a determination that a snapback event has occurred in a circuit. For example, a circuit may comprise a memory cell that may experience a snapback event as a result of an applied electric potential. In certain example implementations, a sense circuit may be provided which is responsive to a snapback event occurring in a memory cell to generate a feed back signal to initiate a change in an electric potential applied to the memory cell.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: April 28, 2020
    Assignee: Micron Technology, Inc.
    Inventors: Jeremy Miles Hirst, Hernan A. Castro, Stephen Tang
  • Publication number: 20190325957
    Abstract: Disclosed herein is a memory cell. The memory cell may act both as a combined selector device and memory element. The memory cell may be programmed by applying write pulses having different polarities. Different polarities of the write pulses may program different logic states into the memory cell. The memory cell may be read by read pulses all having the same polarity. The logic state of the memory cell may be detected by observing different threshold voltages when the read pulses are applied. The different threshold voltages may be responsive to the different polarities of the write pulses.
    Type: Application
    Filed: June 27, 2019
    Publication date: October 24, 2019
    Inventors: Innocenzo Tortorelli, Stephen Tang, Christina Papagianni
  • Publication number: 20190318780
    Abstract: Embodiments disclosed herein may relate to electrically conductive vias in cross-point memory array devices. In an embodiment, the vias may be formed using a lithographic operation also utilized to form electrically conductive lines in a first electrode layer of the cross-point memory array device.
    Type: Application
    Filed: April 17, 2019
    Publication date: October 17, 2019
    Inventor: Stephen Tang
  • Patent number: 10418102
    Abstract: Disclosed herein is a memory cell. The memory cell may act both as a combined selector device and memory element. The memory cell may be programmed by applying write pulses having different polarities. Different polarities of the write pulses may program different logic states into the memory cell. The memory cell may be read by read pulses all having the same polarity. The logic state of the memory cell may be detected by observing different threshold voltages when the read pulses are applied. The different threshold voltages may be responsive to the different polarities of the write pulses.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: September 17, 2019
    Assignee: Micron Technology, Inc.
    Inventors: Innocenzo Tortorelli, Stephen Tang, Christina Papagianni
  • Patent number: 10381077
    Abstract: Disclosed herein is a memory cell. The memory cell may act both as a combined selector device and memory element. The memory cell may be programmed by applying write pulses having different polarities. Different polarities of the write pulses may program different logic states into the memory cell. The memory cell may be read by read pulses all having the same polarity. The logic state of the memory cell may be detected by observing different threshold voltages when the read pulses are applied. The different threshold voltages may be responsive to the different polarities of the write pulses.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: August 13, 2019
    Assignee: Micron Technology, Inc.
    Inventors: Innocenzo Tortorelli, Stephen Tang, Christina Papagianni
  • Patent number: 10311947
    Abstract: Embodiments disclosed herein may relate to electrically conductive vias in cross-point memory array devices. In an embodiment, the vias may be formed using a lithographic operation also utilized to form electrically conductive lines in a first electrode layer of the cross-point memory array device.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: June 4, 2019
    Assignee: Micron Technology, Inc.
    Inventor: Stephen Tang
  • Publication number: 20190027218
    Abstract: Disclosed herein is a memory cell. The memory cell may act both as a combined selector device and memory element. The memory cell may be programmed by applying write pulses having different polarities. Different polarities of the write pulses may program different logic states into the memory cell. The memory cell may be read by read pulses all having the same polarity. The logic state of the memory cell may be detected by observing different threshold voltages when the read pulses are applied. The different threshold voltages may be responsive to the different polarities of the write pulses.
    Type: Application
    Filed: September 21, 2018
    Publication date: January 24, 2019
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Innocenzo Tortorelli, Stephen Tang, Christina Papagianni
  • Publication number: 20190013067
    Abstract: Example subject matter disclosed herein relates to apparatuses and/or devices, and/or various methods for use therein, in which an application of an electric potential to a circuit may be initiated and subsequently changed in response to a determination that a snapback event has occurred in a circuit. For example, a circuit may comprise a memory cell that may experience a snapback event as a result of an applied electric potential. In certain example implementations, a sense circuit may be provided which is responsive to a snapback event occurring in a memory cell to generate a feed back signal to initiate a change in an electric potential applied to the memory cell.
    Type: Application
    Filed: September 11, 2018
    Publication date: January 10, 2019
    Inventors: Jeremy Miles Hirst, Hernan A. Castro, Stephen Tang
  • Patent number: 10134470
    Abstract: Disclosed herein is a memory cell. The memory cell may act both as a combined selector device and memory element. The memory cell may be programmed by applying write pulses having different polarities. Different polarities of the write pulses may program different logic states into the memory cell. The memory cell may be read by read pulses all having the same polarity. The logic state of the memory cell may be detected by observing different threshold voltages when the read pulses are applied. The different threshold voltages may be responsive to the different polarities of the write pulses.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: November 20, 2018
    Assignee: Micron Technology, Inc.
    Inventors: Innocenzo Tortorelli, Stephen Tang, Christina Papagianni
  • Patent number: 10083745
    Abstract: Example subject matter disclosed herein relates to apparatuses and/or devices, and/or various methods for use therein, in which an application of an electric potential to a circuit may be initiated and subsequently changed in response to a determination that a snapback event has occurred in a circuit. For example, a circuit may comprise a memory cell that may experience a snapback event as a result of an applied electric potential. In certain example implementations, a sense circuit may be provided which is responsive to a snapback event occurring in a memory cell to generate a feed back signal to initiate a change in an electric potential applied to the memory cell.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: September 25, 2018
    Assignee: MICRON TECHNOLOGY, INC
    Inventors: Jeremy Miles Hirst, Hernan A. Castro, Stephen Tang
  • Publication number: 20170358347
    Abstract: Example subject matter disclosed herein relates to apparatuses and/or devices, and/or various methods for use therein, in which an application of an electric potential to a circuit may be initiated and subsequently changed in response to a determination that a snapback event has occurred in a circuit. For example, a circuit may comprise a memory cell that may experience a snapback event as a result of an applied electric potential. In certain example implementations, a sense circuit may be provided which is responsive to a snapback event occurring in a memory cell to generate a feed back signal to initiate a change in an electric potential applied to the memory cell.
    Type: Application
    Filed: July 31, 2017
    Publication date: December 14, 2017
    Inventors: Jeremy Miles Hirst, Hernan A. Castro, Stephen Tang
  • Patent number: 9747981
    Abstract: Example subject matter disclosed herein relates to apparatuses and/or devices, and/or various methods for use therein, in which an application of an electric potential to a circuit may be initiated and subsequently changed in response to a determination that a snapback event has occurred in a circuit. For example, a circuit may comprise a memory cell that may experience a snapback event as a result of an applied electric potential. In certain example implementations, a sense circuit may be provided which is responsive to a snapback event occurring in a memory cell to generate a feed back signal to initiate a change in an electric potential applied to the memory cell.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: August 29, 2017
    Assignee: MICRON TECHNOLOGY, INC.
    Inventors: Jeremy Hirst, Hernan Castro, Stephen Tang
  • Publication number: 20170125097
    Abstract: Disclosed herein is a memory cell. The memory cell may act both as a combined selector device and memory element. The memory cell may be programmed by applying write pulses having different polarities. Different polarities of the write pulses may program different logic states into the memory cell. The memory cell may be read by read pulses all having the same polarity. The logic state of the memory cell may be detected by observing different threshold voltages when the read pulses are applied. The different threshold voltages may be responsive to the different polarities of the write pulses.
    Type: Application
    Filed: November 4, 2015
    Publication date: May 4, 2017
    Inventors: Innocenzo Tortorelli, Stephen Tang, Christina Papagianni
  • Publication number: 20170069375
    Abstract: Embodiments disclosed herein may relate to electrically conductive vias in cross-point memory array devices. In an embodiment, the vias may be formed using a lithographic operation also utilized to form electrically conductive lines in a first electrode layer of the cross-point memory array device.
    Type: Application
    Filed: September 29, 2016
    Publication date: March 9, 2017
    Inventor: Stephen Tang