Patents by Inventor Lingming Yang

Lingming Yang 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: 11355554
    Abstract: An example apparatus includes a three-dimensional (3D) memory array including a sense line and a plurality of vertical stacks. Each respective on of the vertical stacks includes a different respective portion of the sense line, a first memory cell coupled to that portion of the sense line, a second memory cell coupled to that portion of the sense line, a first access line coupled to the first memory cell and a second access line coupled to the second memory cell. The first and second access lines are perpendicular to the sense line.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: June 7, 2022
    Assignee: Micron Technology, Inc.
    Inventors: Lingming Yang, Karthik Sarpatwari, Fabio Pellizzer, Nevil N. Gajera, Lei Wei
  • Publication number: 20210366540
    Abstract: An integrated circuit memory device, having: a first wire; a second wire; a memory cell connected between the first wire and the second wire; a first voltage driver connected to the first wire; and a second voltage driver connected to the second wire. During an operation to read the memory cell, the second voltage driver is configured to start ramping up a voltage applied on the second wire after the first voltage driver starts ramping up and holding a voltage applied on the first wire.
    Type: Application
    Filed: August 5, 2021
    Publication date: November 25, 2021
    Inventors: Josephine Tiu Hamada, Kenneth Richard Surdyk, Lingming Yang, Mingdong Cui
  • Publication number: 20210351234
    Abstract: An example apparatus includes a three-dimensional (3D) memory array including a sense line and a plurality of vertical stacks. Each respective on of the vertical stacks includes a different respective portion of the sense line, a first memory cell coupled to that portion of the sense line, a second memory cell coupled to that portion of the sense line, a first access line coupled to the first memory cell and a second access line coupled to the second memory cell. The first and second access lines are perpendicular to the sense line.
    Type: Application
    Filed: May 8, 2020
    Publication date: November 11, 2021
    Inventors: Lingming Yang, Karthik Sarpatwari, Fabio Pellizzer, Nevil N. Gajera, Lei Wei
  • Publication number: 20210287744
    Abstract: Methods, systems, and devices for restoring memory cell threshold voltages are described. A memory device may perform a write operation on a memory cell during which a logic state is stored at the memory cell. Upon detecting satisfaction of a condition, the memory device may perform a read refresh operation on the memory cell during which the threshold voltage of the memory cell may be modified. In some cases, the duration of the read refresh operation may be longer than the duration of a read operation performed by the memory device on the memory cell or on a different memory cell.
    Type: Application
    Filed: March 9, 2021
    Publication date: September 16, 2021
    Inventors: Lingming Yang, Nevil Gajera, Karthik Sarpatwari
  • Patent number: 11114156
    Abstract: An integrated circuit memory device, having: a first wire; a second wire; a memory cell connected between the first wire and the second wire; a first voltage driver connected to the first wire; and a second voltage driver connected to the second wire. During an operation to read the memory cell, the second voltage driver is configured to start ramping up a voltage applied on the second wire after the first voltage driver starts ramping up and holding a voltage applied on the first wire.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: September 7, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Josephine Tiu Hamada, Kenneth Richard Surdyk, Lingming Yang, Mingdong Cui
  • Publication number: 20210118497
    Abstract: An integrated circuit memory device, having: a first wire; a second wire; a memory cell connected between the first wire and the second wire; a first voltage driver connected to the first wire; and a second voltage driver connected to the second wire. During an operation to read the memory cell, the second voltage driver is configured to start ramping up a voltage applied on the second wire after the first voltage driver starts ramping up and holding a voltage applied on the first wire.
    Type: Application
    Filed: October 22, 2019
    Publication date: April 22, 2021
    Inventors: Josephine Tiu Hamada, Kenneth Richard Surdyk, Lingming Yang, Mingdong Cui
  • Patent number: 10964385
    Abstract: Methods, systems, and devices for restoring memory cell threshold voltages are described. A memory device may perform a write operation on a memory cell during which a logic state is stored at the memory cell. Upon detecting satisfaction of a condition, the memory device may perform a read refresh operation on the memory cell during which the threshold voltage of the memory cell may be modified. In some cases, the duration of the read refresh operation may be longer than the duration of a read operation performed by the memory device on the memory cell or on a different memory cell.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: March 30, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Lingming Yang, Nevil Gajera, Karthik Sarpatwari
  • Patent number: 8692224
    Abstract: The present invention relates to the technical field of memories, and in particular to a highly-consistent resistive memory and method of fabricating the same. The resistive memory comprises: a lower electrode which is formed in a first dielectric layer by patterning; a second dielectric layer formed on the lower electrode and the first dielectric layer and provided with an opening for exposing the lower electrode to perform patterning; an edge wall formed in the opening of the second dielectric layer for covering a border area of the lower electrode and the first dielectric layer so that only the middle area of the lower electrode is partially or totally exposed; a storage medium layer formed by performing oxidization with the second dielectric layer and the edge wall as mask; and an upper electrode. The resistive memory exhibits good consistency and high reliability; moreover, unit size is mall, which is advantageous for improving storage characteristic.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: April 8, 2014
    Assignee: Fudan University
    Inventors: Yinyin Lin, Lingming Yang
  • Publication number: 20130193397
    Abstract: The present invention relates to the technical field of memories, and in particular to a highly-consistent resistive memory and method of fabricating the same. The resistive memory comprises: a lower electrode which is formed in a first dielectric layer by patterning; a second dielectric layer formed on the lower electrode and the first dielectric layer and provided with an opening for exposing the lower electrode to perform patterning; an edge wall formed in the opening of the second dielectric layer for covering a border area of the lower electrode and the first dielectric layer so that only the middle area of the lower electrode is partially or totally exposed; a storage medium layer formed by performing oxidization with the second dielectric layer and the edge wall as mask; and an upper electrode. The resistive memory exhibits good consistency and high reliability; moreover, unit size is mall, which is advantageous for improving storage characteristic.
    Type: Application
    Filed: July 14, 2011
    Publication date: August 1, 2013
    Applicant: FUDAN UNIVERSITY
    Inventors: Yinyin Lin, Lingming Yang