Patents by Inventor Ali Taghvaei

Ali Taghvaei 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: 20230260558
    Abstract: Disclosed herein are related to a memory device. In one aspect, the memory device includes a memory cell, a precharge circuit, a reset voltage control circuit, and a logic control circuit. In one aspect, the precharge circuit is configured to set a voltage of the bit line to a first voltage level. In one aspect, the reset voltage control circuit includes a transistor coupled to the bit line to set the voltage of the bit line to a second voltage level. The transistor can be arranged or operate as a diode. In one aspect, the logic control circuit is configured to cause the reset voltage control circuit to set the voltage of the bit line to the second voltage level during a reset phase and cause the precharge circuit to set the voltage of the bit line to the first voltage level during a precharge phase after the reset phase.
    Type: Application
    Filed: May 25, 2022
    Publication date: August 17, 2023
    Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.
    Inventors: Ali Taghvaei, Atul Katoch
  • Patent number: 11721380
    Abstract: Word-line drivers, memories, and methods of operating word-line drivers are provided. A word-line driver coupled to an array of memory cells includes a decoder powered by a first power supply. The decoder is configured to decode an address to provide a plurality of word-line signals. The word-line driver also includes a plurality of output stages powered by a second power supply that is different than the first power supply. Each of the output stages includes a first transistor having a gate controlled by a first control signal and an inverter. The inverter is coupled between the first transistor and a ground and has an input coupled to the decoder to receive one of the word-line signals. The word-line driver also includes pull-down circuitry coupled between the gates of the first transistors and the ground and activated by a second control signal.
    Type: Grant
    Filed: June 2, 2021
    Date of Patent: August 8, 2023
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Ali Taghvaei, Atul Katoch
  • Patent number: 11295791
    Abstract: A memory device Input/Output includes a memory cell having a local bit line. A first IO circuit is coupled to the local bit line and is configured to output a local IO signal to a global bit line. A second IO circuit is coupled to the global bit line and is configured to output a global IO signal. A latch circuit is configured to latch the local IO signal in response to a data signal on the local bit line.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: April 5, 2022
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Atul Katoch, Ali Taghvaei
  • Publication number: 20210287729
    Abstract: Word-line drivers, memories, and methods of operating word-line drivers are provided. A word-line driver coupled to an array of memory cells includes a decoder powered by a first power supply. The decoder is configured to decode an address to provide a plurality of word-line signals. The word-line driver also includes a plurality of output stages powered by a second power supply that is different than the first power supply. Each of the output stages includes a first transistor having a gate controlled by a first control signal and an inverter. The inverter is coupled between the first transistor and a ground and has an input coupled to the decoder to receive one of the word-line signals. The word-line driver also includes pull-down circuitry coupled between the gates of the first transistors and the ground and activated by a second control signal.
    Type: Application
    Filed: June 2, 2021
    Publication date: September 16, 2021
    Inventors: Ali Taghvaei, Atul Katoch
  • Patent number: 11031063
    Abstract: Word-line drivers, memories, and methods of operating word-line drivers are provided. A word-line driver coupled to an array of memory cells includes a decoder powered by a first power supply. The decoder is configured to decode an address to provide a plurality of word-line signals. The word-line driver also includes a plurality of output stages powered by a second power supply that is different than the first power supply. Each of the output stages includes a first transistor having a gate controlled by a first control signal and an inverter. The inverter is coupled between the first transistor and a ground and has an input coupled to the decoder to receive one of the word-line signals. The word-line driver also includes pull-down circuitry coupled between the gates of the first transistors and the ground and activated by a second control signal.
    Type: Grant
    Filed: May 27, 2020
    Date of Patent: June 8, 2021
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Ali Taghvaei, Atul Katoch
  • Publication number: 20210005232
    Abstract: A memory device Input/Output includes a memory cell having a local bit line. A first IO circuit is coupled to the local bit line and is configured to output a local IO signal to a global bit line. A second IO circuit is coupled to the global bit line and is configured to output a global IO signal. A latch circuit is configured to latch the local IO signal in response to a data signal on the local bit line.
    Type: Application
    Filed: September 21, 2020
    Publication date: January 7, 2021
    Inventors: Atul Katoch, Ali Taghvaei
  • Patent number: 10783938
    Abstract: A memory device Input/Output includes a memory cell having a local bit line. A first IO circuit is coupled to the local bit line and is configured to output a local IO signal to a global bit line. A second IO circuit is coupled to the global bit line and is configured to output a global IO signal. A latch circuit is configured to latch the local IO signal in response to a data signal on the local bit line.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: September 22, 2020
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Atul Katoch, Ali Taghvaei
  • Publication number: 20200286541
    Abstract: Word-line drivers, memories, and methods of operating word-line drivers are provided. A word-line driver coupled to an array of memory cells includes a decoder powered by a first power supply. The decoder is configured to decode an address to provide a plurality of word-line signals. The word-line driver also includes a plurality of output stages powered by a second power supply that is different than the first power supply. Each of the output stages includes a first transistor having a gate controlled by a first control signal and an inverter. The inverter is coupled between the first transistor and a ground and has an input coupled to the decoder to receive one of the word-line signals. The word-line driver also includes pull-down circuitry coupled between the gates of the first transistors and the ground and activated by a second control signal.
    Type: Application
    Filed: May 27, 2020
    Publication date: September 10, 2020
    Inventors: Ali Taghvaei, Atul Katoch
  • Patent number: 10699766
    Abstract: Word-line drivers, memories, and methods of operating word-line drivers are provided. A word-line driver coupled to an array of memory cells includes a decoder powered by a first power supply. The decoder is configured to decode an address to provide a plurality of word-line signals. The word-line driver also includes a plurality of output stages powered by a second power supply that is different than the first power supply. Each of the output stages includes a first transistor having a gate controlled by a first control signal and an inverter. The inverter is coupled between the first transistor and a ground and has an input coupled to the decoder to receive one of the word-line signals. The word-line driver also includes pull-down circuitry coupled between the gates of the first transistors and the ground and activated by a second control signal.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: June 30, 2020
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Ali Taghvaei, Atul Katoch
  • Publication number: 20200035288
    Abstract: Word-line drivers, memories, and methods of operating word-line drivers are provided. A word-line driver coupled to an array of memory cells includes a decoder powered by a first power supply. The decoder is configured to decode an address to provide a plurality of word-line signals. The word-line driver also includes a plurality of output stages powered by a second power supply that is different than the first power supply. Each of the output stages includes a first transistor having a gate controlled by a first control signal and an inverter. The inverter is coupled between the first transistor and a ground and has an input coupled to the decoder to receive one of the word-line signals. The word-line driver also includes pull-down circuitry coupled between the gates of the first transistors and the ground and activated by a second control signal.
    Type: Application
    Filed: October 2, 2019
    Publication date: January 30, 2020
    Inventors: Ali Taghvaei, Atul Katoch
  • Publication number: 20200005837
    Abstract: A memory device Input/Output includes a memory cell having a local bit line. A first IO circuit is coupled to the local bit line and is configured to output a local IO signal to a global bit line. A second IO circuit is coupled to the global bit line and is configured to output a global IO signal. A latch circuit is configured to latch the local IO signal in response to a data signal on the local bit line.
    Type: Application
    Filed: February 12, 2019
    Publication date: January 2, 2020
    Inventors: Atul Katoch, Ali Taghvaei
  • Patent number: 10475502
    Abstract: Word-line drivers, memories, and methods of operating word-line drivers are provided. A word-line driver coupled to an array of memory cells includes a decoder powered by a first power supply. The decoder is configured to decode an address to provide a plurality of word-line signals. The word-line driver also includes a plurality of output stages powered by a second power supply that is different than the first power supply. Each of the output stages includes a first transistor having a gate controlled by a first control signal and an inverter. The inverter is coupled between the first transistor and a ground and has an input coupled to the decoder to receive one of the word-line signals. The word-line driver also includes pull-down circuitry coupled between the gates of the first transistors and the ground and activated by a second control signal.
    Type: Grant
    Filed: October 5, 2017
    Date of Patent: November 12, 2019
    Assignee: Taiwan Semiconductor Manufacturing Company Limited
    Inventors: Ali Taghvaei, Atul Katoch
  • Publication number: 20180374521
    Abstract: A memory array having a first port and a second port is disclosed. The memory array includes: a first memory cell, wherein access to the first memory cell through the first port is controlled by a first word line, and access to the first memory cell through the second port is controlled by a second word line; a second memory cell, wherein access to the second memory cell through the first port is controlled by the first word line, and access to the second memory cell through the second port is controlled by the second word line; and a disturb detector, used to generate a disturb detected signal for indicating whether the first memory cell and the second memory cell are accessed at a same time. A memory array having a write assistor is also disclosed.
    Type: Application
    Filed: July 21, 2017
    Publication date: December 27, 2018
    Inventors: SANJEEV KUMAR JAIN, ALI TAGHVAEI, ATUL KATOCH
  • Patent number: 10163477
    Abstract: A memory array having a first port and a second port is disclosed. The memory array includes: a first memory cell, wherein access to the first memory cell through the first port is controlled by a first word line, and access to the first memory cell through the second port is controlled by a second word line; a second memory cell, wherein access to the second memory cell through the first port is controlled by the first word line, and access to the second memory cell through the second port is controlled by the second word line; and a disturb detector, used to generate a disturb detected signal for indicating whether the first memory cell and the second memory cell are accessed at a same time. A memory array having a write assistor is also disclosed.
    Type: Grant
    Filed: July 21, 2017
    Date of Patent: December 25, 2018
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
    Inventors: Sanjeev Kumar Jain, Ali Taghvaei, Atul Katoch
  • Publication number: 20180166115
    Abstract: Word-line drivers, memories, and methods of operating word-line drivers are provided. A word-line driver coupled to an array of memory cells includes a decoder powered by a first power supply. The decoder is configured to decode an address to provide a plurality of word-line signals. The word-line driver also includes a plurality of output stages powered by a second power supply that is different than the first power supply. Each of the output stages includes a first transistor having a gate controlled by a first control signal and an inverter. The inverter is coupled between the first transistor and a ground and has an input coupled to the decoder to receive one of the word-line signals. The word-line driver also includes pull-down circuitry coupled between the gates of the first transistors and the ground and activated by a second control signal.
    Type: Application
    Filed: October 5, 2017
    Publication date: June 14, 2018
    Inventors: Ali Taghvaei, Atul Katoch