Patents by Inventor Igor G. Kouznetsov

Igor G. Kouznetsov 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: 10644021
    Abstract: There is provided a monolithic three dimensional array of charge storage devices which includes a plurality of device levels, wherein at least one surface between two successive device levels is planarized by chemical mechanical polishing.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: May 5, 2020
    Assignee: SANDISK TECHNOLOGIES LLC
    Inventors: Thomas H. Lee, Igor G. Kouznetsov
  • Publication number: 20200066352
    Abstract: A method of erasing, during an erase operation, a non-volatile memory (NVM) cell of a memory device is disclosed. The erasing includes applying a first HV signal (VPOS) to a common source line (CSL). The CSL is shared among NVM cells of a sector of NVM cells. The first HV signal is above a highest voltage of a power supply. The erasing also includes applying the first HV signal to a local bit line (BL).
    Type: Application
    Filed: August 5, 2019
    Publication date: February 27, 2020
    Inventors: Bogdan I. Georgescu, Gary P. Mosculak, Vijay Raghavan, Igor G. Kouznetsov
  • Publication number: 20190355583
    Abstract: A device including both drain extended metal-on-semiconductor (DE_MOS) and low-voltage metal-on-semiconductor (LV_MOS) transistors and methods of manufacturing the same are provided. In one embodiment, the method includes implanting ions of a first-type at a first energy level in a drain portion of a first DE_MOS transistor in a DE_MOS region of a substrate to form the first DE_MOS transistor, and implanting ions of the first-type at a second energy level in a LV_MOS region of the substrate adjust a voltage threshold of a first LV_MOS transistor, while concurrently implanting ions of the first-type at the second energy level in the drain portion of the first DE_MOS transistor to form a drain extension of the first DE_MOS transistor. Other embodiments are also provided.
    Type: Application
    Filed: February 14, 2019
    Publication date: November 21, 2019
    Inventors: Sungkwon Lee, Igor G. Kouznetsov, Gyu-Chul Kim
  • Publication number: 20190318785
    Abstract: A method for operating a memory device includes the steps of providing a first voltage to a first transistor of a first memory cell and a third transistor of a second memory cell, providing a second voltage to a gate of a second transistor of the first memory cell and a gate of a fourth transistor of the second memory cell, and providing a third voltage to a gate of the first transistor of the first memory cell and a gate of the third transistor of the second memory cell. Other embodiments are also described.
    Type: Application
    Filed: January 10, 2019
    Publication date: October 17, 2019
    Inventors: Xiaojun Yu, Venkatraman Prabhakar, Igor G. Kouznetsov, Long T. Hinh, Bo Jin
  • Patent number: 10373688
    Abstract: A method of erasing, during an erase operation, a non-volatile memory (NVM) cell of a memory device is disclosed. The erasing includes applying a first HV signal (VPOS) to a common source line (CSL). The CSL is shared among NVM cells of a sector of NVM cells. The first HV signal is above a highest voltage of a power supply. The erasing also includes applying the first HV signal to a local bit line (BL).
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: August 6, 2019
    Assignee: LONGITUDE FLASH MEMORY SOLUTIONS LTD.
    Inventors: Bogdan I. Georgescu, Gary P. Moscaluk, Vijay Raghavan, Igor G. Kouznetsov
  • Patent number: 10262747
    Abstract: A non-volatile memory that includes a shared source line configuration and methods of operating the same to reduce disturbs is provided. In one embodiment, the method includes coupling a first positive high voltage to a first global wordline in a first row of an array of memory cells, and coupling a second negative high voltage (VNEG) to a first bitline in a first column of the array to apply a bias to a non-volatile memory transistor in a selected memory cell to program the selected memory cell. A margin voltage having a magnitude less than VNEG is coupled to a second global wordline in a second row of the array, and an inhibit voltage coupled to a second bitline in a second column of the array.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: April 16, 2019
    Assignee: Cypress Semiconductor Corporation
    Inventors: Ryan T. Hirose, Igor G. Kouznetsov, Venkatraman Prabhakar, Kaveh Shakeri, Bogdan Georgescu
  • Patent number: 10217639
    Abstract: A device including both drain extended metal-on-semiconductor (DE_MOS) and low-voltage metal-on-semiconductor (LV_MOS) transistors and methods of manufacturing the same are provided. In one embodiment, the method includes implanting ions of a first-type at a first energy level in a drain portion of a first DE_MOS transistor in a DE_MOS region of a substrate to form the first DE_MOS transistor, and implanting ions of the first-type at a second energy level in a LV_MOS region of the substrate adjust a voltage threshold of a first LV_MOS transistor, while concurrently implanting ions of the first-type at the second energy level in the drain portion of the first DE_MOS transistor to form a drain extension of the first DE_MOS transistor. Other embodiments are also provided.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: February 26, 2019
    Assignee: Cypress Semiconductor Corporation
    Inventors: Sungkwon Lee, Igor G. Kouznetsov, Gyu-Chul Kim
  • Patent number: 10204691
    Abstract: A non-volatile memory that includes a shared source line configuration and methods of operating the same to reduce disturbs is provided. In one embodiment, the method includes coupling a first positive high voltage to a first global wordline in a first row of an array of memory cells, and coupling a second negative high voltage (VNEG) to a first bitline in a first column of the array to apply a bias to a non-volatile memory transistor in a selected memory cell to program the selected memory cell. A margin voltage having a magnitude less than VNEG is coupled to a second global wordline in a second row of the array, and an inhibit voltage coupled to a second bitline in a second column of the array.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: February 12, 2019
    Assignee: Cypress Semiconductor Corporation
    Inventors: Ryan T. Hirose, Igor G. Kouznetsov, Venkatraman Prabhakar, Kaveh Shakeri, Bogdan Georgescu
  • Publication number: 20180254286
    Abstract: There is provided a monolithic three dimensional array of charge storage devices which includes a plurality of device levels, wherein at least one surface between two successive device levels is planarized by chemical mechanical polishing.
    Type: Application
    Filed: May 4, 2018
    Publication date: September 6, 2018
    Inventors: Thomas H. Lee, Igor G. Kouznetsov
  • Patent number: 10032517
    Abstract: A system including a memory architecture is described. In one embodiment, the memory architecture includes an array of non-volatile memory cells, a first independently controlled voltage generation circuit, a plurality of register bits to store programmable values used by the independently controlled voltage generation circuit and a control circuit coupled to the first independently controlled voltage generation circuit. The first independently controlled voltage generation circuit is coupled to supply a positive voltage to the array during program and erase operations so that a magnitude of the positive voltage is applied across a storage note of an accessed memory cell of the array. The plurality of register bits to store programmable values used by the independently controlled voltage generation circuit to control the magnitude of the positive voltage. The control circuit controls a duration of the positive voltage. Other embodiments are also described.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: July 24, 2018
    Assignee: Cypress Semiconductor Corporation
    Inventors: Ryan Tasuo Hirose, Fredrick B. Jenne, Vijay Raghavan, Igor G. Kouznetsov, Paul Fredrick Ruths, Cristinel Zonte, Bogdan I. Georgescu, Leonard Vasile Gitlan, James Paul Myers
  • Publication number: 20180166140
    Abstract: A system including a memory architecture is described. In one embodiment, the memory architecture includes an array of non-volatile memory cells, a first independently controlled voltage generation circuit, a plurality of register bits to store programmable values used by the independently controlled voltage generation circuit and a control circuit coupled to the first independently controlled voltage generation circuit. The first independently controlled voltage generation circuit is coupled to supply a positive voltage to the array during program and erase operations so that a magnitude of the positive voltage is applied across a storage note of an accessed memory cell of the array. The plurality of register bits to store programmable values used by the independently controlled voltage generation circuit to control the magnitude of the positive voltage. The control circuit controls a duration of the positive voltage. Other embodiments are also described.
    Type: Application
    Filed: April 15, 2015
    Publication date: June 14, 2018
    Inventors: Ryan Tasuo Hirose, Fredrick B. Jenne, Vijay Raghavan, Igor G. Kouznetsov, Paul Fredrick Ruths, Cristinel Zonte, Bogdan I. Georgescu, Leonard Vasile Gitlan, James Paul Myers
  • Patent number: 9922988
    Abstract: Memory devices and methods for forming the same are disclosed. In one embodiment, the device includes a non-volatile memory (NVM) transistor formed in a first region of a substrate, the NVM transistor comprising a channel and a gate stack on the substrate overlying the channel. The gate stack includes a dielectric layer on the substrate, a charge-trapping layer on the dielectric layer, an oxide layer overlying the charge-trapping layer, a first gate overlying the oxide layer, and a first silicide region overlying the first gate. The device includes a metal-oxide-semiconductor transistor formed in a second region of the substrate comprising a gate oxide overlying the substrate in the second region, a second gate overlying the gate oxide, and second silicide region overlying the second gate. A strain inducing structure overlies at least the NVM transistor and a surface of the substrate in the first region of the substrate.
    Type: Grant
    Filed: March 6, 2017
    Date of Patent: March 20, 2018
    Assignee: Cypress Semiconductor Corporation
    Inventors: Krishnaswamy Ramkumar, Igor G. Kouznetsov, Venkatraman Prabhakar
  • Publication number: 20180068735
    Abstract: A non-volatile memory that includes a shared source line configuration and methods of operating the same to reduce disturbs is provided. In one embodiment, the method includes coupling a first positive high voltage to a first global wordline in a first row of an array of memory cells, and coupling a second negative high voltage (VNEG) to a first bitline in a first column of the array to apply a bias to a non-volatile memory transistor in a selected memory cell to program the selected memory cell. A margin voltage having a magnitude less than VNEG is coupled to a second global wordline in a second row of the array, and an inhibit voltage coupled to a second bitline in a second column of the array.
    Type: Application
    Filed: November 8, 2017
    Publication date: March 8, 2018
    Applicant: Cypress Semiconductor Corporation
    Inventors: Ryan T. Hirose, Igor G. Kouznetsov, Venkatraman Prabhakar, Kaveh Shakeri, Bogdan Georgescu
  • Patent number: 9899089
    Abstract: A system including a memory architecture is described. In one embodiment, the memory architecture includes an array of non-volatile memory cells, a first independently controlled voltage generation circuit, a plurality of register bits to store programmable values used by the independently controlled voltage generation circuit and a control circuit coupled to the first independently controlled voltage generation circuit. The first independently controlled voltage generation circuit is coupled to supply a positive voltage to the array during program and erase operations so that a magnitude of the positive voltage is applied across a storage node of an accessed memory cell of the array. The plurality of register bits to store programmable values used by the independently controlled voltage generation circuit to control the magnitude of the positive voltage. The control circuit controls a duration of the positive voltage. Other embodiments are also described.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: February 20, 2018
    Assignee: Cypress Semiconductor Corporation
    Inventors: Ryan Tasuo Hirose, Fredrick B. Jenne, Vijay Raghavan, Igor G. Kouznetsov, Paul Fredrick Ruths, Cristinel Zonte, Bogdan I. Georgescu, Leonard Vasile Gitlan, James Paul Myers
  • Publication number: 20170365346
    Abstract: A method of erasing, during an erase operation, a non-volatile memory (NVM) cell of a memory device is disclosed. The erasing includes applying a first HV signal (VPOS) to a common source line (CSL). The CSL is shared among NVM cells of a sector of NVM cells. The first HV signal is above a highest voltage of a power supply. The erasing also includes applying the first HV signal to a local bit line (BL).
    Type: Application
    Filed: June 27, 2017
    Publication date: December 21, 2017
    Applicant: Cypress Semiconductor Corporation
    Inventors: Bogdan I. Georgescu, Gary P. Moscaluk, Vijay Raghavan, Igor G. Kouznetsov
  • Patent number: 9847137
    Abstract: A non-volatile memory and methods of operating the same to reduce disturbs is provided. In one embodiment, the method includes coupling a first positive high voltage to a first global wordline in a first row of an array of memory cells, and coupling a second negative high voltage (VNEG) to a first bitline in a first column of the array to apply a bias to a non-volatile memory transistor in a selected memory cell to program the selected memory cell. A margin voltage having a magnitude less than VNEG is coupled to a second global wordline in a second row of the array, and an inhibit voltage coupled to a second bitline in a second column of the array to reduce a bias applied to a non-volatile memory transistor in an unselected memory cell to reduce program disturb of data programmed in the unselected memory cell due to programming.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: December 19, 2017
    Assignee: Cypress Semiconductor Corporation
    Inventors: Ryan T. Hirose, Igor G. Kouznetsov, Venkatraman Prabhakar, Kaveh Shakeri, Bogdan Georgescu
  • Patent number: 9818484
    Abstract: Systems, methods, and apparatus are disclosed for implementing memory cells having common source lines. The methods may include receiving a first voltage at a first transistor. The first transistor may be coupled to a second transistor and included in a first memory cell. The methods include receiving a second voltage at a third transistor. The third transistor may be coupled to a fourth transistor and included in a second memory cell. The first and second memory cells may be coupled to a common source line. The methods include receiving a third voltage at a gate of the second transistor and a gate of the fourth transistor that may cause them to operate in cutoff mode. The methods may include receiving a fourth voltage at a gate of the first transistor. The fourth voltage may cause a change in a charge storage layer included in the first transistor.
    Type: Grant
    Filed: March 22, 2017
    Date of Patent: November 14, 2017
    Assignee: Cypress Semiconductor Corporation
    Inventors: Xiaojun Yu, Venkatraman Prabhakar, Igor G. Kouznetsov, Long T Hinh, Bo Jin
  • Publication number: 20170278573
    Abstract: Systems, methods, and apparatus are disclosed for implementing memory cells having common source lines. The methods may include receiving a first voltage at a first transistor. The first transistor may be coupled to a second transistor and included in a first memory cell. The methods include receiving a second voltage at a third transistor. The third transistor may be coupled to a fourth transistor and included in a second memory cell. The first and second memory cells may be coupled to a common source line. The methods include receiving a third voltage at a gate of the second transistor and a gate of the fourth transistor that may cause them to operate in cutoff mode. The methods may include receiving a fourth voltage at a gate of the first transistor. The fourth voltage may cause a change in a charge storage layer included in the first transistor.
    Type: Application
    Filed: March 22, 2017
    Publication date: September 28, 2017
    Applicant: Cypress Semiconductor Corporation
    Inventors: Xiaojun Yu, Venkatraman Prabhakar, Igor G. Kouznetsov, Long T. Hinh, Bo Jin
  • Publication number: 20170263622
    Abstract: Memory devices and methods for forming the same are disclosed. In one embodiment, the device includes a non-volatile memory (NVM) transistor formed in a first region of a substrate, the NVM transistor comprising a channel and a gate stack on the substrate overlying the channel. The gate stack includes a dielectric layer on the substrate, a charge-trapping layer on the dielectric layer, an oxide layer overlying the charge-trapping layer, a first gate overlying the oxide layer, and a first silicide region overlying the first gate. The device includes a metal-oxide-semiconductor transistor formed in a second region of the substrate comprising a gate oxide overlying the substrate in the second region, a second gate overlying the gate oxide, and second silicide region overlying the second gate. A strain inducing structure overlies at least the NVM transistor and a surface of the substrate in the first region of the substrate.
    Type: Application
    Filed: March 6, 2017
    Publication date: September 14, 2017
    Applicant: Cypress Semiconductor Corporation
    Inventors: Krishnaswamy Ramkumar, Igor G. Kouznetsov, Venkatraman Prabhakar
  • Patent number: 9704585
    Abstract: A method of erasing, during an erase operation, a non-volatile memory (NVM) cell of a memory device is disclosed. The erasing includes applying a first HV signal (VPOS) to a common source line (CSL). The CSL is shared among NVM cells of a sector of NVM cells. The first HV signal is above a highest voltage of a power supply. The erasing also includes applying the first HV signal to a local bit line (BL).
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: July 11, 2017
    Assignee: Cypress Semiconductor Corporation
    Inventors: Bogdan I. Georgescu, Gary P. Mosculak, Vijay Raghavan, Igor G. Kouznetsov