Patents by Inventor Krishna Parat

Krishna Parat 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: 20260173858
    Abstract: An embodiment of a memory device may comprise a vertical channel, a first memory cell formed on the vertical channel, a first wordline coupled to the first memory cell, a second memory cell formed on the vertical channel immediately above the first memory cell, a second wordline coupled to the second memory cell, and an airgap disposed between the first wordline and the second wordline. Other embodiments are disclosed and claimed.
    Type: Application
    Filed: September 23, 2025
    Publication date: June 18, 2026
    Applicant: INTEL NDTM US LLC
    Inventors: Vijay Saradhi MANGU, David Meyaard, Randy Koval, Krishna Parat
  • Patent number: 12424483
    Abstract: An embodiment of a memory device may comprise a vertical channel, a first memory cell formed on the vertical channel, a first wordline coupled to the first memory cell, a second memory cell formed on the vertical channel immediately above the first memory cell, a second wordline coupled to the second memory cell, and an airgap disposed between the first wordline and the second wordline. Other embodiments are disclosed and claimed.
    Type: Grant
    Filed: June 18, 2021
    Date of Patent: September 23, 2025
    Assignee: INTEL NDTM US LLC
    Inventors: Vijay Saradhi Mangu, David Meyaard, Randy Koval, Krishna Parat
  • Patent number: 12131785
    Abstract: Systems, apparatuses and methods may provide for technology that biases a word line of a block in NAND memory to a first voltage level, biases a source-side select gate and a drain-side select gate of the block to a second voltage level, and issues a discharge erase pulse to bitlines and a source of the block, wherein the discharge erase pulse is issued at a third voltage level, wherein the third voltage level is greater than the first voltage level and the second voltage level, and wherein the third voltage level is less than a fourth voltage level of a standard erase pulse. In one example, the discharge erase pulse injects holes into pillars of the block and bypasses an erase of cells in the pillars of the block.
    Type: Grant
    Filed: June 1, 2022
    Date of Patent: October 29, 2024
    Assignee: Intel NDTM US LLC
    Inventors: Chao Zhang, Krishna Parat, Richard Fastow, Ricardo Basco, Xin Sun, Heonwook Kim, Zhan Liu
  • Patent number: 12120878
    Abstract: An integrated circuit memory includes a first memory block and an adjacent second memory block. The first memory block comprises a first memory pillar around which a first memory cell is formed. The second memory block comprises a second memory pillar around which a second memory cell is formed. An isolation or slit area between the first and second memory blocks electrically isolates the first and second memory blocks. In an example, the slit area comprising a slit pillar around which no memory cells are formed. The slit pillar is a dummy pillar, and insulator material electrically isolates the slit pillar from a Word Line (WL) through which it passes. The isolation layer electrically can also isolate a (WL) of the first memory block from a corresponding WL of the second memory block. In an example, the slit pillar and the memory pillars have at least in part similar structures.
    Type: Grant
    Filed: February 8, 2020
    Date of Patent: October 15, 2024
    Assignee: Intel Corporation
    Inventors: Deepak Thimmegowda, Brian J. Cleereman, Srivardhan Gowda, Jui-Yen Lin, Liu Liu, Krishna Parat, Jong Sun Sel, Baosuo Zhou
  • Patent number: 12051469
    Abstract: An apparatus, a method, and a system. The method includes implementing an erase operation on a deck of a superblock, block or subblock of a three-dimensional (3D) non-volatile memory device to obtain an erased deck; applying a dummy read pulse to one or more wordlines (WLs) of a to-be-read deck of the superblock, block or subblock; and implementing, after application of the dummy read pulse, a read operation on one or more memory cells corresponding to the one or more WLs to read data from the one or more memory cells.
    Type: Grant
    Filed: May 26, 2022
    Date of Patent: July 30, 2024
    Assignee: Intel NDTM US LLC
    Inventors: Wei Cao, Richard M. Fastow, Xuehong Yu, Xin Sun, Hyungseok Kim, Narayanan Ramanan, Amol R. Joshi, Krishna Parat
  • Patent number: 11625191
    Abstract: An apparatus and/or system is described including a memory device or a controller for the memory device to perform heating of the memory device. In embodiments, a controller is to receive a temperature of the memory device and determine that the temperature is below a threshold temperature. In embodiments, the controller activates a heater for one or more memory die to assist the memory device in moving the temperature towards the threshold temperature, to assist the memory device when reading data. In embodiments, the heater comprises a plurality of conductive channels included in the one or more memory die or other on-board heater. Other embodiments are disclosed and claimed.
    Type: Grant
    Filed: January 31, 2020
    Date of Patent: April 11, 2023
    Assignee: Intel Corporation
    Inventors: Arash Hazeghi, Pranav Kalavade, Rohit Shenoy, Krishna Parat
  • Publication number: 20230036595
    Abstract: An integrated circuit memory includes a first memory block and an adjacent second memory block. The first memory block comprises a first memory pillar around which a first memory cell is formed. The second memory block comprises a second memory pillar around which a second memory cell is formed. An isolation or slit area between the first and second memory blocks electrically isolates the first and second memory blocks. In an example, the slit area comprising a slit pillar around which no memory cells are formed. The slit pillar is a dummy pillar, and insulator material electrically isolates the slit pillar from a Word Line (WL) through which it passes. The isolation layer electrically can also isolate a (WL) of the first memory block from a corresponding WL of the second memory block. In an example, the slit pillar and the memory pillars have at least in part similar structures.
    Type: Application
    Filed: February 8, 2020
    Publication date: February 2, 2023
    Inventors: Deepak THIMMEGOWDA, Brian J. CLEEREMAN, Srivardhan GOWDA, Jui-Yen LIN, Liu LIU, Krishna PARAT, Jong Sun SEL, Baosuo ZHOU
  • Publication number: 20220406646
    Abstract: An embodiment of a memory device may comprise a vertical channel, a first memory cell formed on the vertical channel, a first wordline coupled to the first memory cell, a second memory cell formed on the vertical channel immediately above the first memory cell, a second wordline coupled to the second memory cell, and an airgap disposed between the first wordline and the second wordline. Other embodiments are disclosed and claimed.
    Type: Application
    Filed: June 18, 2021
    Publication date: December 22, 2022
    Applicant: Intel Corporation
    Inventors: Vijay Saradhi Mangu, David Meyaard, Randy Koval, Krishna Parat
  • Publication number: 20220293189
    Abstract: Systems, apparatuses and methods may provide for technology that biases a word line of a block in NAND memory to a first voltage level, biases a source-side select gate and a drain-side select gate of the block to a second voltage level, and issues a discharge erase pulse to bitlines and a source of the block, wherein the discharge erase pulse is issued at a third voltage level, wherein the third voltage level is greater than the first voltage level and the second voltage level, and wherein the third voltage level is less than a fourth voltage level of a standard erase pulse. In one example, the discharge erase pulse injects holes into pillars of the block and bypasses an erase of cells in the pillars of the block.
    Type: Application
    Filed: June 1, 2022
    Publication date: September 15, 2022
    Inventors: Chao Zhang, Krishna Parat, Richard Fastow, Ricardo Basco, Xin Sun, Heonwook Kim, Zhan Liu
  • Publication number: 20220284968
    Abstract: An apparatus, a method, and a system. The method includes implementing an erase operation on a deck of a superblock, block or subblock of a three-dimensional (3D) non-volatile memory device to obtain an erased deck; applying a dummy read pulse to one or more wordlines (WLs) of a to-be-read deck of the superblock, block or subblock; and implementing, after application of the dummy read pulse, a read operation on one or more memory cells corresponding to the one or more WLs to read data from the one or more memory cells.
    Type: Application
    Filed: May 26, 2022
    Publication date: September 8, 2022
    Applicant: Intel Corporation
    Inventors: Wei Cao, Richard M. Fastow, Xuehong Yu, Xin Sun, Hyungseok Kim, Narayanan Ramanan, Amol R. Joshi, Krishna Parat
  • Patent number: 11355199
    Abstract: An apparatus, a method, and a system. The method includes implementing an erase operation on a deck of a superblock, block or subblock of a three-dimensional (3D) non-volatile memory device to obtain an erased deck; applying a dummy read pulse to one or more wordlines (WLs) of a to-be-read deck of the superblock, block or subblock; and implementing, after application of the dummy read pulse, a read operation on one or more memory cells corresponding to the one or more WLs to read data from the one or more memory cells.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: June 7, 2022
    Assignee: Intel Corporation
    Inventors: Wei Cao, Richard M. Fastow, Xuehong Yu, Xin Sun, Hyungseok Kim, Narayanan Ramanan, Amol R. Joshi, Krishna Parat
  • Patent number: 11322508
    Abstract: Flash memory technology is disclosed. In one example, a flash memory component can include a plurality of conductive layers vertically spaced apart from one another and separated by voids, each of the plurality of conductive layers forming a word line. The memory component can also include a vertically oriented conductive channel extending through the plurality of conductive layers. In addition, the flash memory component can include a plurality of memory cells coupling the plurality of conductive layers to the conductive channel. Each word line can be associated with one of the plurality of memory cells. Associated devices, systems, and methods are also disclosed.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: May 3, 2022
    Assignee: Intel Corporation
    Inventors: Krishna Parat, Richard Fastow
  • Publication number: 20220028459
    Abstract: An apparatus, a method, and a system. The method includes implementing an erase operation on a deck of a superblock, block or subblock of a three-dimensional (3D) non-volatile memory device to obtain an erased deck; applying a dummy read pulse to one or more wordlines (WLs) of a to-be-read deck of the superblock, block or subblock; and implementing, after application of the dummy read pulse, a read operation on one or more memory cells corresponding to the one or more WLs to read data from the one or more memory cells.
    Type: Application
    Filed: July 23, 2020
    Publication date: January 27, 2022
    Inventors: Wei Cao, Richard M. Fastow, Xuehong Yu, Xin Sun, Hyungseok Kim, Narayanan Ramanan, Amol R. Joshi, Krishna Parat
  • Publication number: 20210240388
    Abstract: An apparatus and/or system is described including a memory device or a controller for the memory device to perform heating of the memory device. In embodiments, a controller is to receive a temperature of the memory device and determine that the temperature is below a threshold temperature. In embodiments, the controller activates a heater for one or more memory die to assist the memory device in moving the temperature towards the threshold temperature, to assist the memory device when reading data. In embodiments, the heater comprises a plurality of conductive channels included in the one or more memory die or other on-board heater. Other embodiments are disclosed and claimed.
    Type: Application
    Filed: January 31, 2020
    Publication date: August 5, 2021
    Inventors: Arash Hazeghi, Pranav Kalavade, Rohit Shenoy, Krishna Parat
  • Patent number: 11029861
    Abstract: Memory devices might be configured to perform methods including reading a first page of memory cells and flag data wherein the flag data indicates whether a second page of memory cells adjacent to the first page is programmed, and determining from the flag data whether to re-read the first page of memory cells with an adjusted read voltage; performing a sense operation on memory cells coupled to first data lines of a first array of memory cells and memory cells coupled to data lines of a second array of memory cells, and determining a program indication of memory cells coupled to second data lines from the sense operation performed on the memory cells coupled to the data lines of the second array of memory cells; and/or programming memory cells coupled to first data lines in a first array of memory cells, and programming memory cells coupled to second data lines in the first array of memory cells while programming memory cells coupled to data lines in a second array of memory cells with flag data indicative o
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: June 8, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Shafqat Ahmed, Khaled Hasnat, Pranav Kalavade, Krishna Parat, Aaron Yip, Mark A. Helm, Andrew Bicksler
  • Patent number: 10923450
    Abstract: An integrated circuit memory includes a logic circuitry bonded to a memory array. For example, the logic circuitry is formed separately from the memory array, and then the logic circuitry and the memory array are bonded. The logic circuitry facilitates operations of the memory array and includes complementary metal-oxide-semiconductor (CMOS) logic components, such as word line drivers, bit line drivers, sense amplifiers for the memory array. In an example, instead of being bonded to a single memory array, the logic circuitry is bonded to and shared by two memory arrays. For example, the logic circuitry is between two memory arrays. Due to the bonding process, a bonding interface layer is formed. Thus, in such an example, a first bonding interface layer is between the logic circuitry and a first memory array, and a second bonding interface layer is between the logic circuitry and a second memory array.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: February 16, 2021
    Assignee: Intel Corporation
    Inventors: Richard Fastow, Khaled Hasnat, Prashant Majhi, Owen W. Jungroth, Krishna Parat
  • Publication number: 20200395328
    Abstract: An integrated circuit memory includes a logic circuitry bonded to a memory array. For example, the logic circuitry is formed separately from the memory array, and then the logic circuitry and the memory array are bonded. The logic circuitry facilitates operations of the memory array and includes complementary metal-oxide-semiconductor (CMOS) logic components, such as word line drivers, bit line drivers, sense amplifiers for the memory array. In an example, instead of being bonded to a single memory array, the logic circuitry is bonded to and shared by two memory arrays. For example, the logic circuitry is between two memory arrays. Due to the bonding process, a bonding interface layer is formed. Thus, in such an example, a first bonding interface layer is between the logic circuitry and a first memory array, and a second bonding interface layer is between the logic circuitry and a second memory array.
    Type: Application
    Filed: June 11, 2019
    Publication date: December 17, 2020
    Applicant: Intel Corporation
    Inventors: Richard Fastow, Khaled Hasnat, Prashant Majhi, Owen W. Jungroth, Krishna Parat
  • Patent number: 10861867
    Abstract: Embodiments of the present disclosure are directed towards techniques to provide a memory device with reduced capacitance. In one embodiment, a memory array is formed in a die, and includes one or more pillars and a plurality of wordlines coupled with the one or more pillars. Adjacent wordlines of the plurality of wordlines are separated by respective dielectric layers, which may include components, to reduce capacitance of the plurality of wordlines. The components comprise air gaps or low-k dielectric material. Other embodiments may be described and/or claimed.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: December 8, 2020
    Assignee: Intel Corporation
    Inventors: Khaled Hasnat, Prashant Majhi, Krishna Parat
  • Patent number: 10854746
    Abstract: A memory structure can include a conductive channel, a charge storage structure adjacent to the conductive channel, and a strain-inducing layer adjacent to the conductive channel on a side opposite the charge storage structure. The strain-inducing layer can have a higher coefficient of thermal expansion (CTE) than the conductive channel.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: December 1, 2020
    Assignee: Intel Corporation
    Inventors: Prashant Majhi, Khaled Hasnat, Krishna Parat
  • Patent number: 10847233
    Abstract: Memory devices including a controller configured to cause the memory device to apply a positive first voltage level to a first data line selectively connected to a first string of series-connected memory cells while applying a second voltage level, higher than the first voltage level, to a second data line selectively connected to a second string of series-connected memory cells; while applying the first voltage level to the first data line and applying the second voltage level to the second data line, applying a third voltage level to a particular access line coupled to a memory cell of a first string of series-connected memory cells selected for programming, wherein a differential between the third voltage level and the first voltage level is configured to increase a threshold voltage of the memory cell selected for programming, as well as other apparatus containing similar memory devices.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: November 24, 2020
    Assignee: Micron Technology, Inc.
    Inventors: Akira Goda, Yijie Zhao, Krishna Parat