Patents by Inventor Bipul C. Paul

Bipul C. Paul 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: 12293086
    Abstract: An apparatus and method for providing high throughput memory responses are provided. The apparatus includes a memory device including a plurality of memory arrays, a memory controller configured to control the memory device, the memory controller having a read queue, a write queue, and an address match circuit, and a data output circuit. The memory controller receives a read request, searches the write queue for a write address that matches a read address of the read request, and sends data associated with the write address from the write queue to the data output circuit without accessing the memory device when the write address matches the read address, the write address that matches the read address being a target address. The data output circuit outputs the data associated with the target address to an external device.
    Type: Grant
    Filed: May 11, 2023
    Date of Patent: May 6, 2025
    Inventors: Shashank Nemawarkar, Bipul C. Paul
  • Publication number: 20250098177
    Abstract: A disclosed non-volatile memory (NVM) structure is implemented in a fully depleted semiconductor-on-insulator technology processing platform and includes multiple NVM banks with NVM cells including transistors. NVM banks have well regions in a substrate. Transistors of NVM cells of each NVM bank are on an insulator layer above a corresponding well region for that bank. A bias control circuit causes well regions for NVM banks in a standby state to be biased with a reverse back biasing voltage and causes a well region for an NVM bank in an operational state to be biased with a forward back biasing voltage. The bias control circuit can initiate forward back biasing during a cache data retrieval process (before NVM bank access) to ensure that the corresponding well region of an NVM bank at issue is fully biased when, following the cache data retrieval process, access to the NVM bank is still required.
    Type: Application
    Filed: September 19, 2023
    Publication date: March 20, 2025
    Inventors: Navneet K. Jain, Shashank S. Nemawarkar, Bipul C. Paul
  • Patent number: 12176023
    Abstract: Structures for a static random access memory bit cell and methods of forming a structure for a static random access memory bit cell. The structure comprises a static random access memory bit cell including a first node and a second node, a first ferroelectric field-effect transistor including a first terminal connected to the first node, and a second ferroelectric field-effect transistor including a second terminal connected to the second node.
    Type: Grant
    Filed: December 13, 2022
    Date of Patent: December 24, 2024
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Pirooz Parvarandeh, Venkatesh P. Gopinath, Navneet Jain, Bipul C. Paul, Halid Mulaosmanovic
  • Publication number: 20240377954
    Abstract: An apparatus and method for providing high throughput memory responses are provided. The apparatus includes a memory device including a plurality of memory arrays, a memory controller configured to control the memory device, the memory controller having a read queue, a write queue, and an address match circuit, and a data output circuit. The memory controller receives a read request, searches the write queue for a write address that matches a read address of the read request, and sends data associated with the write address from the write queue to the data output circuit without accessing the memory device when the write address matches the read address, the write address that matches the read address being a target address. The data output circuit outputs the data associated with the target address to an external device.
    Type: Application
    Filed: May 11, 2023
    Publication date: November 14, 2024
    Inventors: Shashank NEMAWARKAR, Bipul C. Paul
  • Patent number: 12087384
    Abstract: The present disclosure relates to memory devices and, more particularly, to bias voltage generation circuit for memory devices and methods of operation. The voltage generation circuit includes: an internal voltage generator which providing a bias voltage to at least one internal node of a bias voltage generation circuitry; and at least one pre-charging circuitry providing a predefined bias voltage to at least one internal node including a distributed network of local drivers.
    Type: Grant
    Filed: February 10, 2022
    Date of Patent: September 10, 2024
    Assignee: GLOBALFOUNDRIES U.S. Inc.
    Inventors: Ming Yin, Bipul C. Paul, Nishtha Gaul, Shashank Nemawarkar
  • Patent number: 12051465
    Abstract: Disclosed is a sense circuit with first and second branches connected to first and second inputs of an amplifier. The first branch includes series-connected first transistors between a voltage rail and a data line and a first node between two first transistors and connected to the first input. First transistors on either side of the first node receive corresponding gate bias voltages. The second branch includes series-connected second transistors between the voltage rail and a reference device and a second node between two second transistors and connected to the second input. One first transistor and one second transistor share a common control signal. The first and second branches independently and concurrently generate data and reference voltages on the first and second nodes and the difference between them is sensed by the amplifier. Also disclosed are a non-volatile memory structure incorporating the sense circuit and a method.
    Type: Grant
    Filed: July 14, 2022
    Date of Patent: July 30, 2024
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Chandrahasa Reddy Dinnipati, Bipul C. Paul, Ramesh Raghavan
  • Publication number: 20240194535
    Abstract: Structures that include field-effect transistors and methods of forming such structures. The structure comprises a substrate, a dielectric layer on the substrate, a first field-effect transistor including a first semiconductor layer over the dielectric layer and a first gate electrode, and a second field-effect transistor including a second semiconductor layer over the dielectric layer and a second gate electrode adjacent to the first gate electrode. The second semiconductor layer is connected to the first semiconductor layer, and the first and second semiconductor layers are positioned between the first gate electrode and the second gate electrode.
    Type: Application
    Filed: December 13, 2022
    Publication date: June 13, 2024
    Inventors: Venkatesh P. Gopinath, Navneet Jain, Hongru Ren, Alexander Derrickson, Jianwei Peng, Bipul C. Paul
  • Publication number: 20240194253
    Abstract: Structures for a static random access memory bit cell and methods of forming a structure for a static random access memory bit cell. The structure comprises a static random access memory bit cell including a first node and a second node, a first ferroelectric field-effect transistor including a first terminal connected to the first node, and a second ferroelectric field-effect transistor including a second terminal connected to the second node.
    Type: Application
    Filed: December 13, 2022
    Publication date: June 13, 2024
    Inventors: Pirooz Parvarandeh, Venkatesh P. Gopinath, Navneet Jain, Bipul C. Paul, Halid Mulaosmanovic
  • Publication number: 20240196629
    Abstract: A memory cell array structure includes a memory cell including a memory element and a transistor having a source terminal coupled to a second electrode of the memory element, a bit line coupled to a drain terminal of the transistor and including first and second metal lines extending in a first direction, the second metal line coupled to the first metal line and disposed over the first metal line in a third direction, a word line coupled to a gate terminal of the transistor and including a third metal line that extends in a second direction and is disposed over the second metal line in the third direction, and a source line coupled to a first electrode of the memory element. The first to the third directions are perpendicular to each other. The first and the second metal lines together carry a signal through the bit line.
    Type: Application
    Filed: December 12, 2022
    Publication date: June 13, 2024
    Inventors: Sandeep PURI, Venkatesh Periyapatna GOPINATH, Bipul C. PAUL
  • Patent number: 12002869
    Abstract: One illustrative integrated circuit (IC) product disclosed herein includes a first conductive source/drain contact structure of a first transistor with an insulating source/drain cap positioned above at least a portion of an upper surface of the first conductive source/drain contact structure and a gate-to-source/drain (GSD) contact structure that is conductively coupled to the first conductive source/drain contact structure and a first gate structure of a second transistor. In this example, the product also includes a gate contact structure that is conductively coupled to a second gate structure of a third transistor, wherein an upper surface of each of the GSD contact structure and the gate contact structure is positioned at a first level that is at a level that is above a level of an upper surface of the insulating source/drain cap.
    Type: Grant
    Filed: September 2, 2022
    Date of Patent: June 4, 2024
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Ruilong Xie, Youngtag Woo, Daniel Chanemougame, Bipul C. Paul, Lars W. Liebmann, Heimanu Niebojewski, Xuelian Zhu, Lei Sun, Hui Zang
  • Publication number: 20240177770
    Abstract: A non-volatile memory (NVM) structure includes an array of memory cells. Within the array, data is stored in single cells or twin cells. The structure also includes switch circuits and sense amplifiers. Each switch circuit is connected between bitlines for a group of columns and a corresponding sense amplifier and establishes electrical connections to enable either single cell sensing or twin cell sensing. In single cell sensing, a data signal on a bitline connected to a memory cell is compared to a reference signal. In twin cell sensing, true and complement data signals on two bitlines connected to two memory cells are compared to each other. Since twin cell sensing compares true and complement data signals and does not require a reference signal, twin cell sensing is relatively accurate without the need for trim bits. Thus, the structure can store trim cells, accurately sense them, and subsequently use them.
    Type: Application
    Filed: November 28, 2022
    Publication date: May 30, 2024
    Inventors: Bipul C. Paul, Chandrahasa Reddy Dinnipati
  • Patent number: 11881241
    Abstract: A structure includes an array of nonvolatile memory cells, wordlines and bitlines connected to the nonvolatile memory cells, sense amplifiers connected to the nonvolatile memory cells, and reference cells connected to the sense amplifiers. Each of the reference cells has a transistor connected to a variable resistor, one of the wordlines, a reference bitline separate from the bitlines, and the sense amplifiers.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: January 23, 2024
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Chandrahasa Reddy Dinnipati, Ramesh Raghavan, Bipul C. Paul
  • Publication number: 20240023345
    Abstract: Structures that include resistive memory elements and methods of forming a structure that includes resistive memory elements. The structure comprises a first plurality of resistive memory elements including a first plurality of bottom electrodes, a first top electrode, and a first switching layer between the first top electrode and the first plurality of bottom electrodes. The structure further comprises a second plurality of resistive memory elements including a second plurality of bottom electrodes, a second top electrode, and a second switching layer between the second top electrode and the second plurality of bottom electrodes. The first top electrode is shared by the first plurality of resistive memory elements, and the second top electrode is shared by the second plurality of resistive memory elements.
    Type: Application
    Filed: July 18, 2022
    Publication date: January 18, 2024
    Inventors: Venkatesh Gopinath, Bipul C. Paul, Xiaoli Hu
  • Publication number: 20240021243
    Abstract: Disclosed is a sense circuit with first and second branches connected to first and second inputs of an amplifier. The first branch includes series-connected first transistors between a voltage rail and a data line and a first node between two first transistors and connected to the first input. First transistors on either side of the first node receive corresponding gate bias voltages. The second branch includes series-connected second transistors between the voltage rail and a reference device and a second node between two second transistors and connected to the second input. One first transistor and one second transistor share a common control signal. The first and second branches independently and concurrently generate data and reference voltages on the first and second nodes and the difference between them is sensed by the amplifier. Also disclosed are a non-volatile memory structure incorporating the sense circuit and a method.
    Type: Application
    Filed: July 14, 2022
    Publication date: January 18, 2024
    Inventors: Chandrahasa Reddy Dinnipati, Bipul C. Paul, Ramesh Raghavan
  • Publication number: 20230422519
    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to a capacitor integrated with a memory element of a memory cell and methods of manufacture. The structure includes: at least one memory cell comprising a memory element with a top conductor material; and a capacitor connected to the memory element by the top conductor material.
    Type: Application
    Filed: June 23, 2022
    Publication date: December 28, 2023
    Inventors: Venkatesh P. Gopinath, Joseph Versaggi, Gregory A. Northrop, Bipul C. Paul
  • Publication number: 20230317130
    Abstract: A structure includes an array of nonvolatile memory cells, wordlines and bitlines connected to the nonvolatile memory cells, sense amplifiers connected to the nonvolatile memory cells, and reference cells connected to the sense amplifiers. Each of the reference cells has a transistor connected to a variable resistor, one of the wordlines, a reference bitline separate from the bitlines, and the sense amplifiers.
    Type: Application
    Filed: March 31, 2022
    Publication date: October 5, 2023
    Applicant: GlobalFoundries U.S. Inc.
    Inventors: Chandrahasa Reddy Dinnipati, Ramesh Raghavan, Bipul C. Paul
  • Patent number: 11776606
    Abstract: The present disclosure relates to a structure including a non-fixed read-cell circuit configured to switch from a first state to a second state based on a state of a memory cell to generate a sensing margin.
    Type: Grant
    Filed: July 1, 2021
    Date of Patent: October 3, 2023
    Assignee: GLOBALFOUNDRIES U.S. INC.
    Inventors: Amogh Agrawal, Ajey Poovannummoottil Jacob, Bipul C. Paul
  • Patent number: 11735257
    Abstract: Disclosed is a memory structure with reference-free single-ended sensing. The structure includes an array of non-volatile memory (NVM) cells (e.g., resistance programmable NVM cells) and a sense circuit connected to the array via a data line and a column decoder. The sense circuit includes field effect transistors (FETs) connected in parallel between an output node and a switch and inverters connected between the data line and the gates of the FETs, respectively. To determine the logic value of a stored bit, the inverters are used to detect whether or not a voltage drop occurs on the data line within a predetermined period of time. Using redundant inverters to control redundant FETs connected to the output node increases the likelihood that the occurrence of the voltage drop will be detected and captured at the output node, even in the presence of process and/or thermal variations. Also disclosed is a sensing method.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: August 22, 2023
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Nishtha Gaul, Bipul C. Paul, Akhilesh R. Jaiswal
  • Publication number: 20230253017
    Abstract: The present disclosure relates to memory devices and, more particularly, to bias voltage generation circuit for memory devices and methods of operation. The voltage generation circuit includes: an internal voltage generator which providing a bias voltage to at least one internal node of a bias voltage generation circuitry; and at least one pre-charging circuitry providing a predefined bias voltage to at least one internal node including a distributed network of local drivers.
    Type: Application
    Filed: February 10, 2022
    Publication date: August 10, 2023
    Inventors: Ming YIN, Bipul C. Paul, Nishtha Gaul, Shashank Nemawarkar
  • Publication number: 20230056457
    Abstract: Embodiments of the present disclosure provide an apparatus including a memory array including a plurality of sub-arrays. A plurality of temporary storage units (TSUs) is coupled to the plurality of sub-arrays. Each TSU indicates whether the respective sub-array is undergoing one of a read operation and a write operation. A control circuit is coupled to each of the plurality of sub-arrays through a data bus. The control circuit transmits a read pulse or a write pulse as a first pulse with a delay in response to the sub-array undergoing the read operation or the write operation and transmits, instantaneously, the first pulse to one of the plurality of sub-arrays in response to the sub-array not undergoing the read operation or the write operation.
    Type: Application
    Filed: August 19, 2021
    Publication date: February 23, 2023
    Inventors: Bipul C. Paul, Shashank S. Nemawarkar