Patents by Inventor Enrico Varesi

Enrico Varesi 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).

  • Publication number: 20190324671
    Abstract: One embodiment provides a memory controller. The memory controller includes a memory controller circuitry and a set pulse determination circuitry. The memory controller circuitry is to identify an address of a target memory cell to be set. The set pulse determination circuitry is to select a positive polarity set pulse if the target memory cell is included in a positive polarity deck or to select a negative polarity set pulse if the target memory cell is included in a negative polarity deck. Each set pulse includes a respective nucleation portion and a respective growth portion. Each portion has a respective current amplitude and a respective time duration.
    Type: Application
    Filed: April 2, 2019
    Publication date: October 24, 2019
    Applicant: Intel Corporation
    Inventors: Koushik Banerjee, Lu Liu, Sanjay Rangan, Enrico Varesi, Innocenzo Tortorelli, Hongmei Wang, Mattia Boniardi
  • Patent number: 10439000
    Abstract: Systems, devices, and methods related to or that employ chalcogenide memory components and compositions are described. A memory device, such as a selector device, may be made of a chalcogenide material composition. A chalcogenide material may have a composition that includes one or more elements from the boron group, such as boron, aluminum, gallium, indium, or thallium. A selector device, for instance, may have a composition of selenium, arsenic, and at least one of boron, aluminum, gallium, indium, or thallium. The selector device may also be composed of germanium or silicon, or both. The relative amount of boron, aluminum, gallium, indium, or thallium may affect a threshold voltage of a memory component, and the relative amount may be selected accordingly. A memory component may, for instance have a composition that includes selenium, arsenic, and some combination of germanium, silicon, and at least one of boron, aluminum, gallium, indium, or thallium.
    Type: Grant
    Filed: November 8, 2018
    Date of Patent: October 8, 2019
    Assignee: Micron Technology, Inc.
    Inventors: Paolo Fantini, F. Daniel Gealy, Enrico Varesi, Swapnil A. Lengade
  • Publication number: 20190115532
    Abstract: Systems, devices, and methods related to or that employ chalcogenide memory components and compositions are described. A component of a memory cell, such as a selector device, storage device, or self-selecting memory device, may be made of a chalcogenide material composition. A chalcogenide material may have a composition that includes one or more elements from the boron group, such as boron, aluminum, gallium, indium, or thallium. The chalcogenide material, for instance, may have a composition of selenium, germanium, and at least one of boron, aluminum, gallium, indium, or thallium. The chalcogenide material may in some cases also include arsenic, but may in some cases lack arsenic.
    Type: Application
    Filed: December 20, 2018
    Publication date: April 18, 2019
    Inventors: Enrico Varesi, Paolo Fantini, Lorenzo Fratin, Swapnil A. Lengade
  • Publication number: 20190102099
    Abstract: One embodiment provides a memory controller. The memory controller includes a memory controller circuitry and a set pulse determination circuitry. The memory controller circuitry is to identify an address of a target memory cell to be set. The set pulse determination circuitry is to select a positive polarity set pulse if the target memory cell is included in a positive polarity deck or to select a negative polarity set pulse if the target memory cell is included in a negative polarity deck. Each set pulse includes a respective nucleation portion and a respective growth portion. Each portion has a respective current amplitude and a respective time duration.
    Type: Application
    Filed: September 29, 2017
    Publication date: April 4, 2019
    Applicant: INTEL CORPORATION
    Inventors: Koushik Banerjee, Lu Liu, Sanjay Rangan, Enrico Varesi, Innocenzo Tortorelli, Hongmei Wang, Mattia Boniardi
  • Patent number: 10248351
    Abstract: One embodiment provides a memory controller. The memory controller includes a memory controller circuitry and a set pulse determination circuitry. The memory controller circuitry is to identify an address of a target memory cell to be set. The set pulse determination circuitry is to select a positive polarity set pulse if the target memory cell is included in a positive polarity deck or to select a negative polarity set pulse if the target memory cell is included in a negative polarity deck. Each set pulse includes a respective nucleation portion and a respective growth portion. Each portion has a respective current amplitude and a respective time duration.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: April 2, 2019
    Assignee: Intel Corporation
    Inventors: Koushik Banerjee, Lu Liu, Sanjay Rangan, Enrico Varesi, Innocenzo Tortorelli, Hongmei Wang, Mattia Boniardi
  • Publication number: 20190081103
    Abstract: Systems, devices, and methods related to or that employ chalcogenide memory components and compositions are described. A memory device, such as a selector device, may be made of a chalcogenide material composition. A chalcogenide material may have a composition that includes one or more elements from the boron group, such as boron, aluminum, gallium, indium, or thallium. A selector device, for instance, may have a composition of selenium, arsenic, and at least one of boron, aluminum, gallium, indium, or thallium. The selector device may also be composed of germanium or silicon, or both. The relative amount of boron, aluminum, gallium, indium, or thallium may affect a threshold voltage of a memory component, and the relative amount may be selected accordingly. A memory component may, for instance have a composition that includes selenium, arsenic, and some combination of germanium, silicon, and at least one of boron, aluminum, gallium, indium, or thallium.
    Type: Application
    Filed: November 8, 2018
    Publication date: March 14, 2019
    Inventors: Paolo Fantini, F. Daniel Gealy, Enrico Varesi, Swapnil A. Lengade
  • Publication number: 20190044060
    Abstract: A phase change memory (PCM) cell can include a PCM layer. A first electrode and a second electrode disposed on opposite sides of the PCM layer. The first electrode, the second electrode, or both includes a metal ceramic composite material layer disposed between an upper barrier layer and a lower barrier layer and wherein the metal ceramic composite material layer provides a corresponding electrode with an electrical resistivity of from 10 mOhm-cm to 1000 mOhm-cm.
    Type: Application
    Filed: June 4, 2018
    Publication date: February 7, 2019
    Applicant: Intel Corporation
    Inventors: Stephen W. Russell, Andrea Gotti, Andrea Redaelli, Enrico Varesi, Innocenzo Tortorelli, Lorenzo Fratin, Alessandro Sebastiani
  • Publication number: 20190019947
    Abstract: Disclosed technology relates generally to integrated circuits, and more particularly, to structures incorporating and methods of forming metal lines including tungsten and carbon, such as conductive lines for memory arrays. In one aspect, a memory device comprises a lower conductive line extending in a first direction and an upper conductive line extending in a second direction and crossing the lower conductive line, wherein at least one of the upper and lower conductive lines comprises tungsten and carbon. The memory device additionally comprises a memory cell stack interposed at an intersection between the upper and lower conductive lines. The memory cell stack includes a first active element over the lower conductive line and a second active element over the first active element, wherein one of the first and second active elements comprises a storage element and the other of the first and second active elements comprises a selector element.
    Type: Application
    Filed: September 4, 2018
    Publication date: January 17, 2019
    Inventors: Andrea Gotti, F. Daniel Gealy, Innocenzo Tortorelli, Enrico Varesi
  • Patent number: 10163977
    Abstract: Systems, devices, and methods related to or that employ chalcogenide memory components and compositions are described. A memory device, such as a selector device, may be made of a chalcogenide material composition. A chalcogenide material may have a composition that includes one or more elements from the boron group, such as boron, aluminum, gallium, indium, or thallium. A selector device, for instance, may have a composition of selenium, arsenic, and at least one of boron, aluminum, gallium, indium, or thallium. The selector device may also be composed of germanium or silicon, or both. The relative amount of boron, aluminum, gallium, indium, or thallium may affect a threshold voltage of a memory component, and the relative amount may be selected accordingly. A memory component may, for instance have a composition that includes selenium, arsenic, and some combination of germanium, silicon, and at least one of boron, aluminum, gallium, indium, or thallium.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: December 25, 2018
    Assignee: MICRON TECHNOLOGY, INC.
    Inventors: Paolo Fantini, F. Daniel Gealy, Enrico Varesi, Swapnil A. Lengade
  • Patent number: 10153428
    Abstract: Disclosed technology relates generally to integrated circuits, and more particularly, to structures incorporating and methods of forming metal lines including tungsten and carbon, such as conductive lines for memory arrays. In one aspect, a memory device comprises a lower conductive line extending in a first direction and an upper conductive line extending in a second direction and crossing the lower conductive line, wherein at least one of the upper and lower conductive lines comprises tungsten and carbon. The memory device additionally comprises a memory cell stack interposed at an intersection between the upper and lower conductive lines. The memory cell stack includes a first active element over the lower conductive line and a second active element over the first active element, wherein one of the first and second active elements comprises a storage element and the other of the first and second active elements comprises a selector element.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: December 11, 2018
    Assignee: MICRON TECHNOLOGY, INC.
    Inventors: Andrea Gotti, F. Daniel Gealy, Innocenzo Tortorelli, Enrico Varesi
  • Publication number: 20180114902
    Abstract: The present disclosure includes textured memory cell structures and method of forming the same. In one or more embodiments, a memory cell includes a buffer portion formed on an amorphous portion and an active portion formed on the buffer portion, wherein the active portion is textured with a single out of plane orientation.
    Type: Application
    Filed: December 14, 2017
    Publication date: April 26, 2018
    Inventors: Andrea Redaelli, Mattia Boniardi, Enrico Varesi, Raffaella Calarco, Jos E. Boschker
  • Publication number: 20180033962
    Abstract: The present disclosure includes textured memory cell structures and method of forming the same. In one or more embodiments, a memory cell includes a buffer portion formed on an amorphous portion and an active portion formed on the buffer portion, wherein the active portion is textured with a single out of plane orientation.
    Type: Application
    Filed: July 29, 2016
    Publication date: February 1, 2018
    Inventors: Andrea Redaelli, Mattia Boniardi, Enrico Varesi, Raffaella Calarco, Jos E. Boschker
  • Publication number: 20170271582
    Abstract: Disclosed technology relates generally to integrated circuits, and more particularly, to structures incorporating and methods of forming metal lines including tungsten and carbon, such as conductive lines for memory arrays. In one aspect, a memory device comprises a lower conductive line extending in a first direction and an upper conductive line extending in a second direction and crossing the lower conductive line, wherein at least one of the upper and lower conductive lines comprises tungsten and carbon. The memory device additionally comprises a memory cell stack interposed at an intersection between the upper and lower conductive lines. The memory cell stack includes a first active element over the lower conductive line and a second active element over the first active element, wherein one of the first and second active elements comprises a storage element and the other of the first and second active elements comprises a selector element.
    Type: Application
    Filed: March 29, 2017
    Publication date: September 21, 2017
    Inventors: Andrea Gotti, F. Daniel Gealy, Innocenzo Tortorelli, Enrico Varesi
  • Patent number: 9634245
    Abstract: Disclosed technology relates generally to integrated circuits, and more particularly, to structures incorporating and methods of forming metal lines including tungsten and carbon, such as conductive lines for memory arrays. In one aspect, a memory device comprises a lower conductive line extending in a first direction and an upper conductive line extending in a second direction and crossing the lower conductive line, wherein at least one of the upper and lower conductive lines comprises tungsten and carbon. The memory device additionally comprises a memory cell stack interposed at an intersection between the upper and lower conductive lines. The memory cell stack includes a first active element over the lower conductive line and a second active element over the first active element, wherein one of the first and second active elements comprises a storage element and the other of the first and second active elements comprises a selector element.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: April 25, 2017
    Assignee: MICRON TECHNOLOGY, INC.
    Inventors: Andrea Gotti, F. Daniel Gealy, Innocenzo Tortorelli, Enrico Varesi
  • Publication number: 20160211017
    Abstract: A phase change memory may be formed of two vertically spaced layers of phase change material. An intervening dielectric may space the layers from one another along a substantial portion of their lateral extent. An opening may be provided in the intervening dielectric to allow the phase change layers to approach one another more closely. As a result, current density may be increased at this location, producing heating.
    Type: Application
    Filed: March 29, 2016
    Publication date: July 21, 2016
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Guy C. Wicker, Fabio Pellizzer, Enrico Varesi, Agostino Pirovano
  • Publication number: 20160204343
    Abstract: Disclosed technology relates generally to integrated circuits, and more particularly, to structures incorporating and methods of forming metal lines including tungsten and carbon, such as conductive lines for memory arrays. In one aspect, a memory device comprises a lower conductive line extending in a first direction and an upper conductive line extending in a second direction and crossing the lower conductive line, wherein at least one of the upper and lower conductive lines comprises tungsten and carbon. The memory device additionally comprises a memory cell stack interposed at an intersection between the upper and lower conductive lines. The memory cell stack includes a first active element over the lower conductive line and a second active element over the first active element, wherein one of the first and second active elements comprises a storage element and the other of the first and second active elements comprises a selector element.
    Type: Application
    Filed: January 9, 2015
    Publication date: July 14, 2016
    Inventors: Andrea Gotti, F. Daniel Gealy, Innocenzo Tortorelli, Enrico Varesi
  • Patent number: 9343676
    Abstract: A phase change memory may be formed of two vertically spaced layers of phase change material. An intervening dielectric may space the layers from one another along a substantial portion of their lateral extent. An opening may be provided in the intervening dielectric to allow the phase change layers to approach one another more closely. As a result, current density may be increased at this location, producing heating.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: May 17, 2016
    Assignee: Micron Technology, Inc.
    Inventors: Guy C. Wicker, Fabio Pellizzer, Enrico Varesi, Agostino Pirovano
  • Publication number: 20140147965
    Abstract: A phase change memory may be formed of two vertically spaced layers of phase change material. An intervening dielectric may space the layers from one another along a substantial portion of their lateral extent. An opening may be provided in the intervening dielectric to allow the phase change layers to approach one another more closely. As a result, current density may be increased at this location, producing heating.
    Type: Application
    Filed: January 29, 2014
    Publication date: May 29, 2014
    Applicant: Micron Technology, Inc.
    Inventors: Guy C. Wicker, Fabio Pellizzer, Enrico Varesi, Agostino Pirovano
  • Patent number: 8680499
    Abstract: Some embodiments include memory cells which contain chalcogenide material having germanium in combination with one or both of antimony and tellurium. An atomic percentage of the germanium within the chalcogenide material is greater than 50%; and may be, for example, within a range of from greater than or equal to about 52% to less than or equal to about 78%. In some embodiments, the memory cell has a top electrode over the chalcogenide material, a heater element under and directly against the chalcogenide material, and a bottom electrode beneath the heater element. The heater element may be L-shaped, with the L-shape having a vertical pillar region joining with a horizontal leg region. A bottom surface of the horizontal leg region may be directly against the bottom electrode, and a top surface of the vertical pillar region may be directly against the chalcogenide material.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: March 25, 2014
    Assignee: Micron Technology, Inc.
    Inventors: Davide Erbetta, Luca Fumagalli, Innocenzo Tortorelli, Enrico Varesi
  • Patent number: 8653495
    Abstract: A phase change memory may be formed of two vertically spaced layers of phase change material. An intervening dielectric may space the layers from one another along a substantial portion of their lateral extent. An opening may be provided in the intervening dielectric to allow the phase change layers to approach one another more closely.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: February 18, 2014
    Assignee: Micron Technology, Inc.
    Inventors: Guy C. Wicker, Fabio Pellizzer, Enrico Varesi, Agostino Pirovano