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: 20240136002Abstract: 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: ApplicationFiled: December 23, 2023Publication date: April 25, 2024Inventors: Tarek Ahmed AMEEN BESHARI, Shantanu R. RAJWADE, Violante MOSCHIANO, Ali KHAKIFIROOZ, Sagar UPADHYAY, Giuseppina PUZZILLI, Kartik GANAPATHI
-
Publication number: 20230317182Abstract: 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: ApplicationFiled: March 31, 2022Publication date: October 5, 2023Inventors: Aliasgar S. MADRASWALA, Ali KHAKIFIROOZ, Bhaskar VENKATARAMAIAH, Sagar UPADHYAY, Yogesh B. WAKCHAURE
-
Publication number: 20230317144Abstract: 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: ApplicationFiled: March 29, 2022Publication date: October 5, 2023Applicant: Intel NDTM US LLCInventors: Chang Wan Ha, Binh Ngo, Ali Khakifirooz, Aliasgar S. Madraswala, Bharat Pathak, Pranav Kalavade, Shantanu Rajwade
-
Publication number: 20230317180Abstract: 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: ApplicationFiled: June 7, 2023Publication date: October 5, 2023Inventors: Rifat FERDOUS, Sung-Taeg KANG, Golnaz KARBASIAN, Ali KHAKIFIROOZ, Rohit S. SHENOY
-
Patent number: 11728428Abstract: 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: GrantFiled: November 13, 2019Date of Patent: August 15, 2023Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Kangguo Cheng, Bruce B. Doris, Darsen D. Lu, Ali Khakifirooz, Kern Rim
-
Patent number: 11693582Abstract: 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: GrantFiled: August 7, 2020Date of Patent: July 4, 2023Assignee: Intel CorporationInventors: Aliasgar S. Madraswala, Ali Khakifirooz, Camila Jaramillo, John Egler, Netra Mahuli, Renjie Chen, Yogesh Wakchaure
-
Patent number: 11610936Abstract: 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: GrantFiled: June 13, 2019Date of Patent: March 21, 2023Assignee: Intel CorporationInventors: Khaled Ahmed, Anup Pancholi, Ali Khakifirooz
-
Publication number: 20220366962Abstract: 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: ApplicationFiled: May 17, 2021Publication date: November 17, 2022Inventors: Rifat FERDOUS, Sung-Taeg KANG, Rohit S. SHENOY, Ali KHAKIFIROOZ, Dipanjan BASU
-
Publication number: 20220343982Abstract: 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: ApplicationFiled: April 21, 2021Publication date: October 27, 2022Inventors: Ali Khakifirooz, Rezaul Haque, Dhanashree Kulkarni, Bayan Nasri
-
Publication number: 20220344211Abstract: 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: ApplicationFiled: May 23, 2022Publication date: October 27, 2022Inventors: Veeraraghavan S. Basker, Kangguo Cheng, Ali Khakifirooz
-
Publication number: 20220310178Abstract: 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: ApplicationFiled: March 25, 2021Publication date: September 29, 2022Applicant: Intel CorporationInventors: Xiang Yang, Ali Khakifirooz, Pranav Kalavade, Shantanu R. Rajwade
-
Publication number: 20220310160Abstract: 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: ApplicationFiled: March 25, 2021Publication date: September 29, 2022Inventors: Ali Khakifirooz, Pranav Kalavade, Shantanu Rajwade, Tarek Ahmed Ameen Beshari
-
Patent number: 11429469Abstract: 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: GrantFiled: March 8, 2021Date of Patent: August 30, 2022Assignee: Intel CorporationInventors: Ali Khakifirooz, Pranav Kalavade, Ravi H. Motwani, Chang Wan Ha
-
Patent number: 11380589Abstract: 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: GrantFiled: October 24, 2019Date of Patent: July 5, 2022Assignee: TESSERA LLCInventors: Veeraraghavan S. Basker, Kangguo Cheng, Ali Khakifirooz
-
Patent number: 11378545Abstract: 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: GrantFiled: February 19, 2020Date of Patent: July 5, 2022Assignee: International Business Machines CorporationInventors: Kangguo Cheng, Ali Khakifirooz, Ghavam G. Shahidi, Davood Shahrjerdi
-
Publication number: 20220084606Abstract: 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: ApplicationFiled: September 16, 2020Publication date: March 17, 2022Inventors: Xiang YANG, Guangyu HUANG, Narayanan RAMANAN, Pranav KALAVADE, Ali KHAKIFIROOZ
-
Patent number: 11275245Abstract: 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: GrantFiled: March 30, 2017Date of Patent: March 15, 2022Assignee: Intel CorporationInventors: Khaled Ahmed, Ali Khakifirooz
-
Publication number: 20220043271Abstract: 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: ApplicationFiled: October 20, 2021Publication date: February 10, 2022Inventors: Khaled AHMED, Ali KHAKIFIROOZ
-
Publication number: 20220043596Abstract: 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: ApplicationFiled: August 7, 2020Publication date: February 10, 2022Applicant: Intel CorporationInventors: Aliasgar S. Madraswala, Ali Khakifirooz, Camila Jaramillo, John Egler, Netra Mahuli, Renjie Chen, Yogesh Wakchaure
-
Publication number: 20210294698Abstract: 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: ApplicationFiled: June 9, 2021Publication date: September 23, 2021Inventors: Ali Khakifirooz, George Kalwitz, Anand Ramalingam, Ravi Motwani, Renjie Chen