Patents by Inventor Ali Khakifirooz

Ali Khakifirooz 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: 20240136002
    Abstract: Program verify can be performed simultaneously on multiple subblocks in a storage device. The program verify occurs after a program operation of the storage cells. The program verify can include application of a verify read pulse to multiple subblocks simultaneously and then a count a number of bitlines of the multiple subblocks that do not discharge in response to the verify read pulse. The program verify passes if the count is within an expected range, instead of requiring all storage cells to pass program verify before moving on. If the number of bitlines not discharging is outside the expected range, the system can perform a second program pass.
    Type: Application
    Filed: December 23, 2023
    Publication date: April 25, 2024
    Inventors: Tarek Ahmed AMEEN BESHARI, Shantanu R. RAJWADE, Violante MOSCHIANO, Ali KHAKIFIROOZ, Sagar UPADHYAY, Giuseppina PUZZILLI, Kartik GANAPATHI
  • Publication number: 20230317182
    Abstract: Dynamic program caching reduces latency of a program operation on multi-level cell (MLC) memory having at least three pages and programmable with multiple threshold voltage levels, such as a Triple Level Cell (TLC) NAND. A controller determines that the program operation can be initiated without loading all pages into the memory. In response, the NAND loads a first page and then executes portions of the program operation in parallel, at least in part, with loading subsequent pages. The NAND behavior is modified to monitor data loading completion times, to copy pages from a cache register to a data register as needed, and to resume program operation if a shutdown occurs. The portions of the program operation include a program prologue operation and a pulse verify loop for the first voltage level (L1) of the MLC memory.
    Type: Application
    Filed: March 31, 2022
    Publication date: October 5, 2023
    Inventors: Aliasgar S. MADRASWALA, Ali KHAKIFIROOZ, Bhaskar VENKATARAMAIAH, Sagar UPADHYAY, Yogesh B. WAKCHAURE
  • Publication number: 20230317144
    Abstract: An embodiment of an apparatus may include NAND memory organized as two or more memory planes and a controller communicatively coupled to the NAND memory, the controller including circuitry to provide synchronous independent plane read operations for the two or more memory planes of the NAND memory. Other embodiments are disclosed and claimed.
    Type: Application
    Filed: March 29, 2022
    Publication date: October 5, 2023
    Applicant: Intel NDTM US LLC
    Inventors: Chang Wan Ha, Binh Ngo, Ali Khakifirooz, Aliasgar S. Madraswala, Bharat Pathak, Pranav Kalavade, Shantanu Rajwade
  • Publication number: 20230317180
    Abstract: The gap width in a threshold voltage (Vt) distribution for a 3D NAND Flash cell is improved by performing touchup program on a selected portion of the word lines in a block after all of the word lines in the block have been programmed.
    Type: Application
    Filed: June 7, 2023
    Publication date: October 5, 2023
    Inventors: Rifat FERDOUS, Sung-Taeg KANG, Golnaz KARBASIAN, Ali KHAKIFIROOZ, Rohit S. SHENOY
  • Patent number: 11728428
    Abstract: A method of forming a fin structure that includes forming a plurality of fin structures from a bulk semiconductor substrate and forming a dielectric spacer on a sidewall of each fin structure in the plurality of fin structure. A semiconductor spacer is formed on a sidewall of the dielectric spacer. A dielectric fill is formed in the space between the adjacent fin structures. The semiconductor spacer and a portion of the fin structures that is present below a lower surface of the dielectric spacer are oxidized. Oxidizing a base portion of the fin structures produces a first strain and oxidizing the semiconductor spacer produces a second strain that is opposite the first strain.
    Type: Grant
    Filed: November 13, 2019
    Date of Patent: August 15, 2023
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kangguo Cheng, Bruce B. Doris, Darsen D. Lu, Ali Khakifirooz, Kern Rim
  • Patent number: 11693582
    Abstract: An apparatus comprises a plurality of memory cells; a plurality of sense circuits, a sense circuit comprising a sense node selectively coupled to a bitline coupled to a first cell of the plurality of memory cells; and a controller to transpose a value indicative of a voltage of the first cell to the sense node; isolate the sense node from the bitline; and calibrate a parameter for the sense circuit based on outputs of the sense circuit for each of a plurality of different applied values of the parameter.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: July 4, 2023
    Assignee: Intel Corporation
    Inventors: Aliasgar S. Madraswala, Ali Khakifirooz, Camila Jaramillo, John Egler, Netra Mahuli, Renjie Chen, Yogesh Wakchaure
  • Patent number: 11610936
    Abstract: Micro light-emitting diode displays and methods of fabricating micro LED displays are described. In an example, a micro light emitting diode pixel structure includes a plurality of micro light emitting diode devices in a dielectric layer. A transparent conducting oxide layer is above the dielectric layer. A color conversion device (CCD) is above the transparent conducting oxide layer and over one of the plurality of micro light emitting diode devices.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: March 21, 2023
    Assignee: Intel Corporation
    Inventors: Khaled Ahmed, Anup Pancholi, Ali Khakifirooz
  • Publication number: 20220366962
    Abstract: After reading a 3D (three dimensional) NAND array, the wordlines of the 3D NAND array can be transitioned to ground in a staggered manner. The 3D NAND array includes a 3D stack with multiple wordlines vertically stacked, including a bottom-most wordline, a top-most wordline, and middle wordlines between the bottom-most wordline and the top-most wordline. A controller that controls the reading can set the multiple wordlines to a read voltage for reading operations and then transition a selected wordline of the multiple wordlines from the read voltage to ground prior to transitioning the other wordlines to ground. Thus, the controller will transition the other wordlines from the read voltage to ground after a delay.
    Type: Application
    Filed: May 17, 2021
    Publication date: November 17, 2022
    Inventors: Rifat FERDOUS, Sung-Taeg KANG, Rohit S. SHENOY, Ali KHAKIFIROOZ, Dipanjan BASU
  • Publication number: 20220343982
    Abstract: Systems, apparatuses and methods may provide for technology that applies a first set of control signals to even bitlines in NAND memory and senses voltage levels of the even bitlines during an even sensing time period. The technology may also apply a second set of control signals to odd bitlines in the NAND memory, and sense voltage levels of the odd bitlines during an odd sensing time period, wherein the second set of control signals are applied after expiration of a stagger time period between the even sensing time period and the odd sensing time period.
    Type: Application
    Filed: April 21, 2021
    Publication date: October 27, 2022
    Inventors: Ali Khakifirooz, Rezaul Haque, Dhanashree Kulkarni, Bayan Nasri
  • Publication number: 20220344211
    Abstract: An array of semiconductor fins is formed on a top surface of a substrate. A dielectric material liner is formed on the surfaces of the array of semiconductor fins. A photoresist layer is applied and patterned such that sidewalls of an opening in the photoresist layer are parallel to the lengthwise direction of the semiconductor fins, and are asymmetrically laterally offset from a lengthwise direction passing through the center of mass of a semiconductor fin to be subsequently removed. An angled ion implantation is performed to convert a top portion of dielectric material liner into a compound material portion. The compound material portion is removed selective to the remaining dielectric material liner, and the physically exposed semiconductor fin can be removed by an etch or converted into a dielectric material portion by a conversion process. The dielectric material liner can be removed after removal of the semiconductor fin.
    Type: Application
    Filed: May 23, 2022
    Publication date: October 27, 2022
    Inventors: Veeraraghavan S. Basker, Kangguo Cheng, Ali Khakifirooz
  • Publication number: 20220310178
    Abstract: A method, a memory chip controller of a flash memory device, and a flash memory device. The memory chip controller includes processing circuitry to receive data for a first page of N pages of data; and program cells of a memory location of the device to an nth threshold voltage level Ln, Ln corresponding to a program verify voltage level PVn, n being an integer from 0 to 2N?1, and Ln being one of 2N threshold voltage levels achievable using the N pages of data. Programming the cells includes: programming the cells based on the data for the first page while receiving data for subsequent pages of the N pages; and programming the cells based on the data for the subsequent pages, wherein programming the cells includes, for at least n=1, causing a respective dynamic start voltage (DSV) to be applied to the cells based on each respective page number p of the N pages for which data is received at the memory chip controller for the memory location to achieve PV1.
    Type: Application
    Filed: March 25, 2021
    Publication date: September 29, 2022
    Applicant: Intel Corporation
    Inventors: Xiang Yang, Ali Khakifirooz, Pranav Kalavade, Shantanu R. Rajwade
  • Publication number: 20220310160
    Abstract: Systems, apparatuses and methods may provide for technology that boosts strings of a plurality of NAND sub-blocks to a pass voltage, deboosts a first subset of the boosted strings based on data associated with the plurality of NAND sub-blocks, and simultaneously programs the first subset while a second subset of the boosted strings remain at the pass voltage. In one example, to boost the strings of the NAND sub-blocks, the technology applies the pass voltage to selected and unselected wordlines that are connected to the NAND sub-blocks while selected and unselected strings are disconnected from a bitline that receives the data associated with the NAND sub-blocks.
    Type: Application
    Filed: March 25, 2021
    Publication date: September 29, 2022
    Inventors: Ali Khakifirooz, Pranav Kalavade, Shantanu Rajwade, Tarek Ahmed Ameen Beshari
  • Patent number: 11429469
    Abstract: Examples herein relate to determining a number of defective bit lines in a memory region prior to applying a program or erase voltages. If a threshold number of bit lines that pass during a program or erase verify operation is used to determine if the program or erase operation passes or fails, the determined number of defective bit lines can be used to adjust the determined number of passes or fails. In some cases, examples described herein can avoid use of extra bit lines and look-up table circuitry to use in place of defective bit lines and save silicon space and cost associated with the use of extra bit-lines. In some examples, a starting magnitude of a program voltage signal can be determined by considering a number of defective bit lines.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: August 30, 2022
    Assignee: Intel Corporation
    Inventors: Ali Khakifirooz, Pranav Kalavade, Ravi H. Motwani, Chang Wan Ha
  • Patent number: 11380589
    Abstract: An array of semiconductor fins is formed on a top surface of a substrate. A dielectric material liner is formed on the surfaces of the array of semiconductor fins. A photoresist layer is applied and patterned such that sidewalls of an opening in the photoresist layer are parallel to the lengthwise direction of the semiconductor fins, and are asymmetrically laterally offset from a lengthwise direction passing through the center of mass of a semiconductor fin to be subsequently removed. An angled ion implantation is performed to convert a top portion of dielectric material liner into a compound material portion. The compound material portion is removed selective to the remaining dielectric material liner, and the physically exposed semiconductor fin can be removed by an etch or converted into a dielectric material portion by a conversion process. The dielectric material liner can be removed after removal of the semiconductor fin.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: July 5, 2022
    Assignee: TESSERA LLC
    Inventors: Veeraraghavan S. Basker, Kangguo Cheng, Ali Khakifirooz
  • Patent number: 11378545
    Abstract: A semiconductor structure capable of real-time spatial sensing of nanoparticles within a nanofluid is provided. The structure includes an array of gate structures. An interlevel dielectric material surrounds the array of gate structures. A vertical inlet channel is located within a portion of the interlevel dielectric material and on one side of the array of gate structures. A vertical outlet channel is located within another portion of the interlevel dielectric material and on another side of the array of gate structures. A horizontal channel that functions as a back gate is in fluid communication with the vertical inlet and outlet channels, and is located beneath the array of gate structures. A back gate dielectric material portion lines exposed surfaces within the vertical inlet channel, the vertical outlet channel and the horizontal channel.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: July 5, 2022
    Assignee: International Business Machines Corporation
    Inventors: Kangguo Cheng, Ali Khakifirooz, Ghavam G. Shahidi, Davood Shahrjerdi
  • Publication number: 20220084606
    Abstract: A method is described. The method includes programming a column of flash storage cells in a direction along the column in which a parasitic transistor that resides between a cell being programmed and an immediately next cell to be programmed has lower resistivity as compared to a corresponding parasitic transistor that exists if the programming were to be performed in an opposite direction along the column.
    Type: Application
    Filed: September 16, 2020
    Publication date: March 17, 2022
    Inventors: Xiang YANG, Guangyu HUANG, Narayanan RAMANAN, Pranav KALAVADE, Ali KHAKIFIROOZ
  • Patent number: 11275245
    Abstract: Embodiments of the present disclosure describe light emitting displays having a light emitter layer that includes an array of light emitters and a wafer having a driving circuit coupled with the light emitter layer, computing devices incorporating the light emitting displays, methods for formation of the light emitting displays, and associated configurations. A light emitting display may include a light emitter layer that includes an array of light emitters and a wafer coupled with the light emitter layer, where the wafer includes a driving circuit formed thereon to drive the light emitters. Other embodiments may be described and/or claimed.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 15, 2022
    Assignee: Intel Corporation
    Inventors: Khaled Ahmed, Ali Khakifirooz
  • Publication number: 20220043271
    Abstract: Embodiments of the present disclosure describe light emitting displays having a light emitter layer that includes an array of light emitters and a wafer having a driving circuit coupled with the light emitter layer, computing devices incorporating the light emitting displays, methods for formation of the light emitting displays, and associated configurations. A light emitting display may include a light emitter layer that includes an array of light emitters and a wafer coupled with the light emitter layer, where the wafer includes a driving circuit formed thereon to drive the light emitters. Other embodiments may be described and/or claimed.
    Type: Application
    Filed: October 20, 2021
    Publication date: February 10, 2022
    Inventors: Khaled AHMED, Ali KHAKIFIROOZ
  • Publication number: 20220043596
    Abstract: An apparatus comprises a plurality of memory cells; a plurality of sense circuits, a sense circuit comprising a sense node selectively coupled to a bitline coupled to a first cell of the plurality of memory cells; and a controller to transpose a value indicative of a voltage of the first cell to the sense node; isolate the sense node from the bitline; and calibrate a parameter for the sense circuit based on outputs of the sense circuit for each of a plurality of different applied values of the parameter.
    Type: Application
    Filed: August 7, 2020
    Publication date: February 10, 2022
    Applicant: Intel Corporation
    Inventors: Aliasgar S. Madraswala, Ali Khakifirooz, Camila Jaramillo, John Egler, Netra Mahuli, Renjie Chen, Yogesh Wakchaure
  • Publication number: 20210294698
    Abstract: Systems, apparatuses and methods may provide for memory controller technology including first logic to trigger, via an initial request, a hard-read and a soft-read, wherein the hard-read is to generate hard-bit information and the soft-read is to generate first soft-bit information and second soft-bit information, conduct a first error correction on the hard-bit information, and issue a subsequent request for at least the second soft-bit information if the first error correction is unsuccessful. Additionally, memory device technology may include a plurality of memory cells and second logic to conduct the hard-read and the soft-read from a memory cell in the plurality of memory cells in response to the initial request, send the hard-bit information to the controller, and withhold at least the second soft-bit information from the controller until the subsequent request is received.
    Type: Application
    Filed: June 9, 2021
    Publication date: September 23, 2021
    Inventors: Ali Khakifirooz, George Kalwitz, Anand Ramalingam, Ravi Motwani, Renjie Chen