Patents by Inventor Kunal R. Parekh

Kunal R. Parekh 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: 20240404880
    Abstract: Microelectronic devices with through-substrate interconnects and associated methods of manufacturing are disclosed herein. In one embodiment, a semiconductor device includes a semiconductor substrate carrying first and second metallization layers. The second metallization layer is spaced apart from the semiconductor substrate with the first metallization layer therebetween. The semiconductor device also includes a conductive interconnect extending at least partially through the semiconductor substrate. The first metallization layer is in electrical contact with the conductive interconnect via the second metallization layer.
    Type: Application
    Filed: August 14, 2024
    Publication date: December 5, 2024
    Inventors: Kyle K. Kirby, Kunal R. Parekh, Sarah A. Niroumand
  • Publication number: 20240404976
    Abstract: A microelectronic device comprises a first die and a second die attached to the first die. The first die comprises a memory array region comprising a stack structure comprising vertically alternating conductive structures and insulative structures, vertically extending strings of memory cells within the stack structure, and first bond pad structures vertically neighboring the vertically extending strings of memory cells. The second die comprises a control logic region comprising control logic devices configured to effectuate at least a portion of control operations for the vertically extending string of memory cells, second bond pad structures in electrical communication with the first bond pad structures, and signal routing structures located at an interface between the first die and the second die. Related microelectronic devices, electronic systems, and methods are also described.
    Type: Application
    Filed: August 15, 2024
    Publication date: December 5, 2024
    Inventors: Akira Goda, Kunal R. Parekh, Aaron S. Yip
  • Patent number: 12154893
    Abstract: A method of forming a microelectronic device comprises forming a source material around substantially an entire periphery of a base material, and removing the source material from lateral sides of the base material while maintaining the source material over an upper surface and a lower surface of the base material. Related methods and base structures for microelectronic devices are also described.
    Type: Grant
    Filed: June 14, 2022
    Date of Patent: November 26, 2024
    Inventor: Kunal R. Parekh
  • Publication number: 20240381631
    Abstract: An electronic device includes one or more capacitors adjacent to a base material. The one or more capacitors comprise at least one electrode extending horizontally within the base material, and additional electrodes extending vertically within the base material and contacting the at least one electrode. The at least one electrode is located below and isolated from an upper surface of the base material. Additional electronic devices are disclosed, as are methods of forming an electronic device and related systems.
    Type: Application
    Filed: July 24, 2024
    Publication date: November 14, 2024
    Inventors: Kunal R. Parekh, Surendranath C. Eruvuru
  • Publication number: 20240379596
    Abstract: A semiconductor device is provided. The semiconductor device includes a substrate having a front side and a back side opposite the front side. A through via extends entirely through the substrate. The through via includes a protruding portion that extends beyond the back side of the substrate. A layer of silicon carbon nitride is disposed at the back side of the substrate and along sidewalls of the protruding portion of the through via. A layer of oxide is disposed at the back side of the substrate and at least partially surrounding the protruding portion of the through via. A conductive pad is disposed at a coupling surface of the through via and at least partially extending through the layer of oxide. As a result, a reliable and cost-efficient semiconductor device can be assembled.
    Type: Application
    Filed: May 9, 2024
    Publication date: November 14, 2024
    Inventors: Bharat Bhushan, Terrence B. McDaniel, Kunal R. Parekh, Bret K. Street, Akshay N. Singh
  • Publication number: 20240379503
    Abstract: A semiconductor device having monolithic conductive columns, and associated systems and methods, are disclosed herein. The semiconductor device can include a semiconductor substrate, a conductive pad, an opening, a non-conductive liner, and a plug of non-conductive material. The conductive pad may be at a surface of the semiconductor substrate. The opening may extend through the semiconductor substrate from the conductive pad to a second surface and define a side wall. The liner may coat the side wall and the plug may fill the opening. A second opening may be formed through the semiconductor device and the opening and a conductive material plated therein.
    Type: Application
    Filed: July 22, 2024
    Publication date: November 14, 2024
    Inventors: Wei Zhou, Kyle K. Kirby, Bret K. Street, Kunal R. Parekh
  • Publication number: 20240373637
    Abstract: A method used in forming a vertical string of memory cells and a conductive via comprises forming a first lower opening and a second lower opening into a lower material. A first material is formed within the first and second lower openings. An upper material is formed above the lower material and above the first material in the first and second lower openings. A first upper opening is formed through the upper material to the first material in the first lower opening. At least a majority of the first material is removed from the first lower opening through the first upper opening and channel material is formed within the first lower and first upper openings for the vertical string of memory cells being formed. After forming the channel material, a second upper opening is formed through the upper material to the first material in the second lower opening. Conductive material of the conductive via is formed within the second upper opening. Structure embodiments independent of method of formation are disclosed.
    Type: Application
    Filed: July 12, 2024
    Publication date: November 7, 2024
    Applicant: Micron Technology, Inc.
    Inventors: Hongbin Zhu, Gurtej S. Sandhu, Kunal R. Parekh
  • Publication number: 20240371834
    Abstract: A method of forming a microelectronic device comprises forming a microelectronic device structure comprising a base structure, a doped semiconductive structure comprising a first portion overlying the base structure and second portions vertically extending from the first portion and into the base structure, a stack structure overlying the doped semiconductive structure, cell pillar structures vertically extending through the stack structure and to the doped semiconductive structure, and digit line structures vertically overlying the stack structure. An additional microelectronic device structure comprising control logic devices is formed. The microelectronic device structure is attached to the additional microelectronic device structure to form a microelectronic device structure assembly. The carrier structure and the second portions of the doped semiconductive structure are removed.
    Type: Application
    Filed: July 17, 2024
    Publication date: November 7, 2024
    Inventor: Kunal R. Parekh
  • Publication number: 20240355371
    Abstract: Methods, systems, and devices for data path signal amplification in coupled semiconductor systems are described. A semiconductor system may implement a first die including memory arrays and a second die including a host interface. The first die may include a first portion of a data path between the memory arrays and the host interface, including a first portion of data path signal amplification circuitry. The second die may include a second portion of the data path, including a second portion of data path signal amplification circuitry. The semiconductor system may implement fine-pitch interconnection between dies to support a relatively greater quantity of signal paths of the data path which, in some examples, may support reducing or eliminating serialization/deserialization circuitry associated with coarser interconnection. In some implementations, a semiconductor system may implement a switching component operable to switch between data paths having different amplification configurations of the dies.
    Type: Application
    Filed: March 15, 2024
    Publication date: October 24, 2024
    Inventors: James Brian Johnson, Brent Keeth, Kunal R. Parekh, Eiichi Nakano, Amy Rae Griffin
  • Publication number: 20240339433
    Abstract: A semiconductor device with a through dielectric via is disclosed. The semiconductor device assembly can include a semiconductor die and multiple stacks of semiconductor dies coupled with the semiconductor die at different lateral locations. Dielectric material can be disposed at the semiconductor die between the multiple stacks of semiconductor dies. The through dielectric via can extend entirely through the dielectric material to the semiconductor die such that the through dielectric via couples with circuitry at the semiconductor die. In this way, the through dielectric via can provide power to the semiconductor die (e.g., exclusive of the multiple stacks of semiconductor dies).
    Type: Application
    Filed: March 20, 2024
    Publication date: October 10, 2024
    Inventors: Bharat Bhushan, Nevil N. Gajera, Akshay N. Singh, Kunal R. Parekh
  • Patent number: 12112793
    Abstract: A memory device includes a memory die bonded to a logic die. A logic die that is bonded to a memory die via a wafer-on-wafer bonding process can receive signals indicative of input data from a global data bus of the memory die and through a bond of the logic die and memory die. The logic die can also receive signals indicative of kernel data from local input/output (LIO) lines of the memory die and through the bond. The logic die can perform a plurality of operations at a plurality of vector-vector (VV) units utilizing the signals indicative of input data and the signals indicative of kernel data. The inputs and the outputs to the VV units can be configured based on a mode of the logic die.
    Type: Grant
    Filed: August 10, 2022
    Date of Patent: October 8, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Aliasger T. Zaidy, Glen E. Hush, Sean S. Eilert, Kunal R. Parekh
  • Patent number: 12112792
    Abstract: A memory device includes an array of memory cells configured on a die or chip and coupled to sense lines and access lines of the die or chip and a respective sense amplifier configured on the die or chip coupled to each of the sense lines. Each of a plurality of subsets of the sense lines is coupled to a respective local input/output (I/O) line on the die or chip for communication of data on the die or chip and a respective transceiver associated with the respective local I/O line, the respective transceiver configured to enable communication of the data to one or more device off the die or chip.
    Type: Grant
    Filed: April 4, 2022
    Date of Patent: October 8, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Glen E. Hush, Sean S. Eilert, Aliasger T. Zaidy, Kunal R. Parekh
  • Publication number: 20240334717
    Abstract: A method of forming a microelectronic device includes forming a first assembly including a semiconductor base structure, a first circuitry region including first devices at a first boundary of the semiconductor base structure, and a second circuitry region including second devices at a second boundary of the semiconductor base structure vertically offset from the first boundary. A microelectronic device structure is formed and includes a stack structure including tiers individually including conductive material and insulative material vertically adjacent the conductive material, and cell pillar structures including semiconductor material vertically extending through the stack structure. The first assembly is attached to the microelectronic device structure to form a second assembly. Microelectronic devices, memory devices, and electronic systems are also described.
    Type: Application
    Filed: January 26, 2024
    Publication date: October 3, 2024
    Inventors: Kunal R. Parekh, Russell L. Meyer
  • Patent number: 12107050
    Abstract: Systems and methods for a semiconductor device having a substrate material with a trench at a front side, a conformal dielectric material over at least a portion of the front side of the substrate material and in the trench, a fill dielectric material on the conformal dielectric material in the trench, and a conductive portion formed during front-end-of-line (FEOL) processing. The conductive portion may include an FEOL interconnect via extending through the fill dielectric material and at least a portion of the conformal dielectric material and having a front side portion defining a front side electrical connection extending beyond the front side of the semiconductor substrate material and a backside portion defining an active contact surface. The conductive portion may extend across at least a portion of the conformal dielectric material and the fill dielectric material and have a backside surface defining an active contact surface.
    Type: Grant
    Filed: May 19, 2021
    Date of Patent: October 1, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Kyle K. Kirby, Kunal R. Parekh
  • Publication number: 20240315018
    Abstract: Some embodiments include an integrated assembly with a semiconductor channel material having a boundary region where a more-heavily-doped region interfaces with a less-heavily-doped region. The more-heavily-doped region and the less-heavily-doped region have the same majority carriers. The integrated assembly includes a gating structure adjacent the semiconductor channel material and having a gating region and an interconnecting region of a common and continuous material. The gating region has a length extending along a segment of the more-heavily-doped region, a segment of the less-heavily-doped region, and the boundary region. The interconnecting region extends laterally outward from the gating region on a side opposite the semiconductor channel region, and is narrower than the length of the gating region. Some embodiments include methods of forming integrated assemblies.
    Type: Application
    Filed: May 28, 2024
    Publication date: September 19, 2024
    Applicant: Micron Technology, Inc.
    Inventors: Justin B. Dorhout, Kunal R. Parekh, Martin C. Roberts, Mohd Kamran Akhtar, Chet E. Carter, David Daycock
  • Publication number: 20240313098
    Abstract: Methods, systems, and devices for transistor architectures in coupled semiconductor systems are described. A memory system may be formed from multiple semiconductor components (e.g., multiple dies, multiple wafers) that are coupled together, with different semiconductor components implementing different techniques for transistor formation. For example, a first die may include a memory array and first circuitry configured to access the memory array, and a second die coupled with the first die may include second circuitry configured to access the memory array. The first circuitry may include transistors formed in accordance with a first fabrication technique (e.g., to form a first type of transistors) and the second circuitry may include transistors formed in accordance with a second fabrication technique (e.g., to form a second type of transistors). The dies may be coupled in a manner that provides an electrical coupling between the first circuitry and the second circuitry.
    Type: Application
    Filed: March 7, 2024
    Publication date: September 19, 2024
    Inventors: James Brian Johnson, Brent Keeth, Kunal R. Parekh, Eiichi Nakano, Amy Rae Griffin
  • Patent number: 12096626
    Abstract: A microelectronic device comprises a memory array region, a control logic region underlying the memory array region, and an interconnect region vertically interposed between the memory array region and the control logic region. The memory array region comprises a stack structure comprising vertically alternating conductive structures and insulating structures; vertically extending strings of memory cells within the stack structure; at least one source structure vertically overlying the stack structure and coupled to the vertically extending strings of memory cells; and digit line structures vertically underlying the stack structure and coupled to the vertically extending strings of memory cells. The control logic region comprises control logic devices for the vertically extending strings of memory cells. The interconnect region comprises structures coupling the digit line structures to the control logic devices.
    Type: Grant
    Filed: January 3, 2023
    Date of Patent: September 17, 2024
    Inventor: Kunal R. Parekh
  • Patent number: 12089403
    Abstract: A method used in forming a memory array comprising strings of memory cells comprises forming a construction comprising a stack that have vertically-alternating insulative tiers and wordline tiers. An array of openings is formed in an uppermost portion of upper material that is above the stack, and the openings comprise channel openings and dummy openings. At least the uppermost portion of the upper material is used as a mask while etching the channel openings and the dummy openings into a lower portion of the upper material. The channel openings are etched into the insulative and wordline tiers. The channel openings are etched deeper into the construction than the dummy openings, and channel material is formed in the channel openings after the etching. Structures independent of method are disclosed.
    Type: Grant
    Filed: February 1, 2022
    Date of Patent: September 10, 2024
    Inventors: M. Jared Barclay, Merri L. Carlson, Saurabh Keshav, George Matamis, Young Joon Moon, Kunal R. Parekh, Paolo Tessariol, Vinayak Shamanna
  • Patent number: 12089422
    Abstract: A method of forming a microelectronic device comprises forming a microelectronic device structure comprising a first control logic region comprising first control logic devices, and a first memory array region vertically overlying the first control logic region and comprising an array of vertically extending strings of memory cells. An additional microelectronic device structure comprising a semiconductive material is attached to an upper surface of the microelectronic device structure. A portion of the semiconductive material is removed. A second control logic region is formed over the first memory array region. The second control logic region comprises second control logic devices and a remaining portion of the semiconductive material. A second memory array region is formed over the second control logic region. The second memory array region comprises an array of resistance variable memory cells. Microelectronic devices, memory devices, and electronic systems are also described.
    Type: Grant
    Filed: September 1, 2023
    Date of Patent: September 10, 2024
    Assignee: Micron Technology, Inc.
    Inventor: Kunal R. Parekh
  • Publication number: 20240297149
    Abstract: A semiconductor device assembly is provided. The semiconductor device assembly includes a logic die, a top memory die, and a one or more intermediate memory dies between the top memory die and the logic die. Front sides of the one or more intermediate memory dies at which active circuitry is disposed face a front side of the top memory die. Back sides of the one or more intermediate memory dies opposite the front sides face a back side of the logic die. In doing so, a cost-efficient, low-complexity semiconductor device can be assembled.
    Type: Application
    Filed: January 29, 2024
    Publication date: September 5, 2024
    Inventors: Bharat Bhushan, Akshay N. Singh, Kunal R. Parekh