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: 8796098
    Abstract: Memory cells including embedded SONOS based non-volatile memory (NVM) and MOS transistors and methods of forming the same are described. Generally, the method includes: forming a dielectric stack on a substrate, the dielectric stack including a tunneling dielectric on the substrate and a charge-trapping layer on the tunneling dielectric; patterning the dielectric stack to form a gate stack of a NVM transistor of a memory device in a first region of the substrate while concurrently removing the dielectric stack from a second region of the substrate; and performing a gate oxidation process of a baseline CMOS process flow to thermally grow a gate oxide of a MOS transistor overlying the substrate in the second region while concurrently growing a blocking oxide overlying the charge-trapping layer. In one embodiment, Indium is implanted to form a channel of the NVM transistor.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: August 5, 2014
    Assignee: Cypress Semiconductor Corporation
    Inventors: Krishnaswamy Ramkumar, Igor G. Kouznetsov, Venkatraman Prabhakar
  • Patent number: 8675405
    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: June 18, 2013
    Date of Patent: March 18, 2014
    Assignee: Cypress Semiconductor Corp.
    Inventors: Bogdan Georgescu, Ryan T. Hirose, Igor G. Kouznetsov, Venkatraman Prabhakar, Kaveh Shakeri
  • Patent number: 8542541
    Abstract: In embodiments described herein, a memory architecture has an array of non-volatile memory cells and a pair of independently controlled voltage pumps. The pair of voltage pumps is coupled for supplying both positive and negative voltage biases to the memory array during program and erase operations, such that a sum of the magnitudes of the positive and negative voltage biases is applied across a storage node of an accessed memory cell.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: September 24, 2013
    Assignee: Cypress Semiconductor Corporation
    Inventors: Ryan T. Hirose, Fredrick Jenne, Vijay Srinivasaraghavan, Igor G. Kouznetsov, Paul Fredrick Ruths, Cristinel Zonte, Bogdan Georgescu, Leonard Vasile Gitlan, James Paul Myers
  • Publication number: 20120188826
    Abstract: In embodiments described herein, a memory architecture has an array of non-volatile memory cells and a pair of independently controlled voltage pumps. The pair of voltage pumps is coupled for supplying both positive and negative voltage biases to the memory array during program and erase operations, such that a sum of the magnitudes of the positive and negative voltage biases is applied across a storage node of an accessed memory cell.
    Type: Application
    Filed: February 28, 2012
    Publication date: July 26, 2012
    Applicant: Cypress Semiconductor Corporation
    Inventors: Ryan T. Hirose, Fredrick Jenne, Vijay Raghavan, Igor G. Kouznetsov, Paul Fredrick Ruths, Cristinel Zonte, Bogdan I. Georgescu, Leonard Vasile Gitlan, James Paul Myers
  • Patent number: 8125835
    Abstract: In embodiments described herein, a memory architecture has an array of non-volatile memory cells and a pair of independently controlled voltage pumps. The pair of voltage pumps is coupled for supplying both positive and negative voltage biases to the memory array during program and erase operations, such that a sum of the magnitudes of the positive and negative voltage biases is applied across a storage node of an accessed memory cell.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: February 28, 2012
    Assignee: Cypress Semiconductor Corporation
    Inventors: Ryan T. Hirose, Fredrick Jenne, Vijay Raghavan, Igor G. Kouznetsov, Paul Fredrick Ruths, Cristinel Zonte, Bogdan I. Georgescu, Leonard Vasile Gitlan, James Paul Myers
  • Patent number: 7969804
    Abstract: A memory architecture is provided with an array of non-volatile memory cells arranged in rows and columns, and a sense amplifier coupled to at least one column within the array for sensing a data bit stored within one of the non-volatile memory cells. In order to provide accurate sensing, a reference current generator is provided and coupled to the sense amplifier. The reference current generator provides a first reference current having adjustable magnitude and adjustable slope, and a second reference current having adjustable magnitude, but constant slope. The first reference current is supplied to the sense amplifier for sensing the data bit. The second reference current is supplied to a control block for generating clock signals used to control sense amplifier timing.
    Type: Grant
    Filed: December 24, 2008
    Date of Patent: June 28, 2011
    Assignee: Cypress Semiconductor Corporation
    Inventors: Ryan T. Hirose, Fredrick Jenne, Vijay Srinivasaraghavan, Igor G. Kouznetsov, Paul Fredrick Ruths, Cristinel Zonte, Bogdan Georgescu, Leonard Vasile Gitlan, James Paul Myers
  • Patent number: 7825455
    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: January 23, 2009
    Date of Patent: November 2, 2010
    Assignee: SanDisk 3D LLC
    Inventors: Thomas H. Lee, Vivek Subramanian, James M. Cleeves, Mark G. Johnson, Paul M. Farmwald, Igor G. Kouznetsov
  • Publication number: 20100074028
    Abstract: In embodiments described herein, a memory architecture has an array of non-volatile memory cells and a pair of independently controlled voltage pumps. The pair of voltage pumps is coupled for supplying both positive and negative voltage biases to the memory array during program and erase operations, such that a sum of the magnitudes of the positive and negative voltage biases is applied across a storage node of an accessed memory cell.
    Type: Application
    Filed: December 24, 2008
    Publication date: March 25, 2010
    Applicant: CYPRESS SEMICONDUCTOR CORPORATION
    Inventors: Ryan T. Hirose, Fredrick Jenne, Vijay Raghavan, Igor G. Kouznetsov, Paul Fredrick Ruths, Cristinel Zonte, Bogdan I. Georgescu, Leonard Vasile Gitlan, James Paul Myers
  • Patent number: 7615436
    Abstract: There is provided a floating gate transistor, such as an EEPROM transistor, and method of making the transistor using two masking steps. The method of making a transistor includes patterning a floating gate layer using a first photoresist mask to form a floating gate rail and doping an active area using the floating gate rail as a mask to form source and drain regions in the active area. The method also includes patterning a control gate layer, a control gate dielectric layer, the floating gate rail, a tunnel dielectric layer and the active area using a second photoresist mask to form a control gate, a control gate dielectric, a floating gate, a tunnel dielectric and a channel island region.
    Type: Grant
    Filed: May 20, 2004
    Date of Patent: November 10, 2009
    Assignee: SanDisk 3D LLC
    Inventors: Igor G. Kouznetsov, Andrew J. Walker
  • Patent number: 6897514
    Abstract: There is provided a floating gate transistor, such as an EEPROM transistor, and method of making the transistor using two masking steps. The method of making a transistor includes patterning a floating gate layer using a first photoresist mask to form a floating gate rail and doping an active area using the floating gate rail as a mask to form source and drain regions in the active area. The method also includes patterning a control gate layer, a control gate dielectric layer, the floating gate rail, a tunnel dielectric layer and the active area using a second photoresist mask to form a control gate, a control gate dielectric, a floating gate, a tunnel dielectric and a channel island region.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: May 24, 2005
    Assignee: Matrix Semiconductor, Inc.
    Inventors: Igor G. Kouznetsov, Andrew J. Walker
  • Patent number: 6888750
    Abstract: A nonvolatile memory array is provided. The array includes an array of nonvolatile memory devices, at least one driver circuit, and a substrate. The at least one driver circuit is not located in a bulk monocrystalline silicon substrate. The at least one driver circuit may be located in a silicon on insulator substrate or in a compound semiconductor substrate.
    Type: Grant
    Filed: August 13, 2001
    Date of Patent: May 3, 2005
    Assignee: Matrix Semiconductor, Inc.
    Inventors: Andrew J. Walker, Mark G. Johnson, N. Johan Knall, Igor G. Kouznetsov, Christopher J. Petti
  • Publication number: 20040207001
    Abstract: There is provided a floating gate transistor, such as an EEPROM transistor, and method of making the transistor using two masking steps. The method of making a transistor includes patterning a floating gate layer using a first photoresist mask to form a floating gate rail and doping an active area using the floating gate rail as a mask to form source and drain regions in the active area. The method also includes patterning a control gate layer, a control gate dielectric layer, the floating gate rail, a tunnel dielectric layer and the active area using a second photoresist mask to form a control gate, a control gate dielectric, a floating gate, a tunnel dielectric and a channel island region.
    Type: Application
    Filed: May 20, 2004
    Publication date: October 21, 2004
    Applicant: MATRIX SEMICONDUCTOR, INC.
    Inventors: Igor G. Kouznetsov, Andrew J. Walker
  • Patent number: 6704235
    Abstract: A memory cell for a two- or a three-dimensional memory array includes first and second conductors and set of layers situated between the conductors. This set of layers includes a dielectric rupture anti-fuse layer having a thickness less than 35 Å and a leakage current density (in the unruptured state) greater than 1 mA/cm2 at 2 V. This low thickness and high current leakage density provide a memory cell with an asymmetric dielectric layer breakdown voltage characteristic. The antifuse layer is formed of an antifuse material characterized by a thickness Tminlife at which the antifuse material is ruptured by a minimum number of write pulses having a polarity that reverse biases diode components included in the memory cell. The average thickness T of the antifuse layer is less than the thickness Tminlife.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: March 9, 2004
    Assignee: Matrix Semiconductor, Inc.
    Inventors: N. Johan Knall, James M. Cleeves, Igor G. Kouznetsov, Michael A. Vyvoda
  • Publication number: 20030155582
    Abstract: Gate dielectric structures for integrated circuits and methods for manufacturing such gate dielectric structures are described. The gate dielectric structures contain gate oxide layers that are provided using a low temperature in-situ steam generation process, thereby providing silicon oxide layers of a very high quality. The gate oxide layers are used primarily in thin film transistors and as the bottom layer in the gate dielectric of silicon-oxide-nitride-oxide-silicon semiconductor devices.
    Type: Application
    Filed: February 19, 2002
    Publication date: August 21, 2003
    Inventors: Maitreyee Mahajani, Andrew J. Walker, Igor G. Kouznetsov
  • Publication number: 20030026158
    Abstract: A memory cell for a two- or a three-dimensional memory array includes first and second conductors and set of layers situated between the conductors. This set of layers includes a dielectric rupture anti-fuse layer having a thickness less than 35 Å and a leakage current density (in the unruptured state) greater than 1 mA/cm2 at 2 V. This low thickness and high current leakage density provide a memory cell with an asymmetric dielectric layer breakdown voltage characteristic. The antifuse layer is formed of an antifuse material characterized by a thickness Tminlife at which the antifuse material is ruptured by a minimum number of write pulses having a polarity that reverse biases diode components included in the memory cell. The average thickness T of the antifuse layer is less than the thickness Tminlife.
    Type: Application
    Filed: December 20, 2001
    Publication date: February 6, 2003
    Applicant: Matrix Semiconductor, Inc.
    Inventors: N. Johan Knall, James M. Cleeves, Igor G. Kouznetsov, Michael A. Vyvoda
  • Publication number: 20020142546
    Abstract: There is provided a floating gate transistor, such as an EEPROM transistor, and method of making the transistor using two masking steps. The method of making a transistor includes patterning a floating gate layer using a first photoresist mask to form a floating gate rail and doping an active area using the floating gate rail as a mask to form source and drain regions in the active area. The method also includes patterning a control gate layer, a control gate dielectric layer, the floating gate rail, a tunnel dielectric layer and the active area using a second photoresist mask to form a control gate, a control gate dielectric, a floating gate, a tunnel dielectric and a channel island region.
    Type: Application
    Filed: February 5, 2002
    Publication date: October 3, 2002
    Applicant: MATRIX SEMICONDUCTOR, INC.
    Inventors: Igor G. Kouznetsov, Andrew J. Walker
  • Publication number: 20010055838
    Abstract: A nonvolatile memory array is provided. The array includes an array of nonvolatile memory devices, at least one driver circuit, and a substrate. The at least one driver circuit is not located in a bulk monocrystalline silicon substrate. The at least one driver circuit may be located in a silicon on insulator substrate or in a compound semiconductor substrate.
    Type: Application
    Filed: August 13, 2001
    Publication date: December 27, 2001
    Applicant: Matrix Semiconductor Inc.
    Inventors: Andrew J. Walker, Mark G. Johnson, N. Johan Knall, Igor G. Kouznetsov, Christopher J. Petti