Patents by Inventor Prakash Rau Mokhna Rau

Prakash Rau Mokhna Rau 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: 20240130132
    Abstract: An electronic device comprising a lower deck and an upper deck adjacent to a source. Each of the lower deck and the upper deck comprise tiers of alternating conductive materials and dielectric materials. Each of the lower deck and the upper deck also comprise an array region and one or more non-array regions. Memory pillars are in the lower deck and the upper deck of the array region and the memory pillars are configured to be operably coupled to the source. Dummy pillars are in the upper deck of the one or more non-array regions and the dummy pillars are configured to be electrically isolated from the source. Another conductive material is in the upper deck and the lower deck of the one or more non-array regions. Additional electronic devices and related systems and methods of forming an electronic device are also disclosed.
    Type: Application
    Filed: December 20, 2023
    Publication date: April 18, 2024
    Inventors: S M Istiaque Hossain, Christopher J. Larsen, Anikumar Chandolu, Wesley O. Mckinsey, Tom J. John, Arun Kumar Dhayalan, Prakash Rau Mokhna Rau
  • Patent number: 11871575
    Abstract: An electronic device comprising a lower deck and an upper deck adjacent to a source. Each of the lower deck and the upper deck comprise tiers of alternating conductive materials and dielectric materials. Each of the lower deck and the upper deck also comprise an array region and one or more non-array regions. Memory pillars are in the lower deck and the upper deck of the array region and the memory pillars are configured to be operably coupled to the source. Dummy pillars are in the upper deck of the one or more non-array regions and the dummy pillars are configured to be electrically isolated from the source. Another conductive material is in the upper deck and the lower deck of the one or more non-array regions. Additional electronic devices and related systems and methods of forming an electronic device are also disclosed.
    Type: Grant
    Filed: June 14, 2022
    Date of Patent: January 9, 2024
    Assignee: Micron Technology, Inc.
    Inventors: S M Istiaque Hossain, Christopher J. Larsen, Anilkumar Chandolu, Wesley O. McKinsey, Tom J. John, Arun Kumar Dhayalan, Prakash Rau Mokhna Rau
  • Publication number: 20230017241
    Abstract: An electronic device comprising lower and upper decks adjacent to a source. The lower and upper decks comprise tiers of alternating conductive materials and dielectric materials. Memory pillars in the lower and upper decks are configured to be operably coupled to the source. The memory pillars comprise contact plugs in the upper deck, cell films in the lower and upper decks, and fill materials in the lower and upper decks. The cell films in the upper deck are adjacent to the contact plugs and the fill materials in the upper deck are adjacent to the contact plugs. Dummy pillars are in a central region of the lower deck and the upper deck. The dummy pillars comprise an oxide material in the upper deck, the oxide material contacting the contact plugs and the fill materials. Additional electronic devices and related systems and methods are also disclosed.
    Type: Application
    Filed: September 19, 2022
    Publication date: January 19, 2023
    Inventors: S M Istiaque Hossain, Tom J. John, Darwin A. Clampitt, Anilkumar Chandolu, Prakash Rau Mokhna Rau, Christopher J. Larsen, Kye Hyun Baek
  • Publication number: 20220367512
    Abstract: Some embodiments include an integrated assembly having a first deck. The first deck has first memory cell levels alternating with first insulative levels. A second deck is over the first deck. The second deck has second memory cell levels alternating with second insulative levels. A cell-material-pillar passes through the first and second decks. Memory cells are along the first and second memory cell levels and include regions of the cell-material-pillar. An intermediate level is between the first and second decks. The intermediate level includes a buffer region adjacent the cell-material-pillar. The buffer region includes a composition different from the first and second insulative materials, and different from the first and second conductive regions. Some embodiments include methods of forming integrated assemblies.
    Type: Application
    Filed: July 20, 2022
    Publication date: November 17, 2022
    Applicant: Micron Technology, Inc.
    Inventors: S.M. Istiaque Hossain, Prakash Rau Mokhna Rau, Arun Kumar Dhayalan, Damir Fazil, Joel D. Peterson, Anilkumar Chandolu, Albert Fayrushin, George Matamis, Christopher Larsen, Rokibul Islam
  • Patent number: 11482536
    Abstract: An electronic device comprising lower and upper decks adjacent to a source. The lower and upper decks comprise tiers of alternating conductive materials and dielectric materials. Memory pillars in the lower and upper decks are configured to be operably coupled to the source. The memory pillars comprise contact plugs in the upper deck, cell films in the lower and upper decks, and fill materials in the lower and upper decks. The cell films in the upper deck are adjacent to the contact plugs and the fill materials in the upper deck are adjacent to the contact plugs. Dummy pillars are in a central region of the lower deck and the upper deck. The dummy pillars comprise an oxide material in the upper deck, the oxide material contacting the contact plugs and the fill materials. Additional electronic devices and related systems and methods are also disclosed.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: October 25, 2022
    Assignee: Micron Technology, Inc.
    Inventors: S M Istiaque Hossain, Tom J. John, Darwin A. Clampitt, Anilkumar Chandolu, Prakash Rau Mokhna Rau, Christopher J. Larsen, Kye Hyun Baek
  • Publication number: 20220310632
    Abstract: An electronic device comprising a lower deck and an upper deck adjacent to a source. Each of the lower deck and the upper deck comprise tiers of alternating conductive materials and dielectric materials. Each of the lower deck and the upper deck also comprise an array region and one or more non-array regions. Memory pillars are in the lower deck and the upper deck of the array region and the memory pillars are configured to be operably coupled to the source. Dummy pillars are in the upper deck of the one or more non-array regions and the dummy pillars are configured to be electrically isolated from the source. Another conductive material is in the upper deck and the lower deck of the one or more non-array regions. Additional electronic devices and related systems and methods of forming an electronic device are also disclosed.
    Type: Application
    Filed: June 14, 2022
    Publication date: September 29, 2022
    Inventors: S M Istiaque Hossain, Christopher J. Larsen, Anilkumar Chandolu, Wesley O. Mckinsey, Tom J. John, Arun Kumar Dhayalan, Prakash Rau Mokhna Rau
  • Patent number: 11430809
    Abstract: Some embodiments include an integrated assembly having a first deck. The first deck has first memory cell levels alternating with first insulative levels. A second deck is over the first deck. The second deck has second memory cell levels alternating with second insulative levels. A cell-material-pillar passes through the first and second decks. Memory cells are along the first and second memory cell levels and include regions of the cell-material-pillar. An intermediate level is between the first and second decks. The intermediate level includes a buffer region adjacent the cell-material-pillar. The buffer region includes a composition different from the first and second insulative materials, and different from the first and second conductive regions. Some embodiments include methods of forming integrated assemblies.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: August 30, 2022
    Assignee: Micron Technology, Inc.
    Inventors: S. M. Istiaque Hossain, Prakash Rau Mokhna Rau, Arun Kumar Dhayalan, Damir Fazil, Joel D. Peterson, Anilkumar Chandolu, Albert Fayrushin, George Matamis, Christopher Larsen, Rokibul Islam
  • Patent number: 11417681
    Abstract: A method used in forming a memory array comprising strings of memory cells and operative through-array-vias (TAVs) comprises forming a stack comprising vertically-alternating insulative tiers and conductive tiers. The stack comprises a TAV region and an operative memory-cell-string region. The TAV region comprises spaced operative TAV areas. Operative channel-material strings are formed in the stack in the operative memory-cell-string region and dummy channel-material strings are formed in the stack in the TAV region laterally outside of and not within the operative TAV areas. Operative TAVs are formed in individual of the spaced operative TAV areas in the TAV region. Other methods and structure independent of method are disclosed.
    Type: Grant
    Filed: March 29, 2021
    Date of Patent: August 16, 2022
    Assignee: Micron Technology, Inc.
    Inventors: Yi Hu, Merri L. Carlson, Anilkumar Chandolu, Indra V. Chary, David Daycock, Harsh Narendrakumar Jain, Matthew J. King, Jian Li, Brett D. Lowe, Prakash Rau Mokhna Rau, Lifang Xu
  • Patent number: 11387245
    Abstract: An electronic device comprising a lower deck and an upper deck adjacent to a source. Each of the lower deck and the upper deck comprise tiers of alternating conductive materials and dielectric materials. Each of the lower deck and the upper deck also comprise an array region and one or more non-array regions. Memory pillars are in the lower deck and the upper deck of the array region and the memory pillars are configured to be operably coupled to the source. Dummy pillars are in the upper deck of the one or more non-array regions and the dummy pillars are configured to be electrically isolated from the source. Another conductive material is in the upper deck and the lower deck of the one or more non-array regions. Additional electronic devices and related systems and methods of forming an electronic device are also disclosed.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: July 12, 2022
    Assignee: Micron Technology, Inc.
    Inventors: S M Istiaque Hossain, Christopher J. Larsen, Anilkumar Chandolu, Wesley O. McKinsey, Tom J. John, Arun Kumar Dhayalan, Prakash Rau Mokhna Rau
  • Publication number: 20220045086
    Abstract: Some embodiments include an integrated assembly having a first deck. The first deck has first memory cell levels alternating with first insulative levels. A second deck is over the first deck. The second deck has second memory cell levels alternating with second insulative levels. A cell-material-pillar passes through the first and second decks. Memory cells are along the first and second memory cell levels and include regions of the cell-material-pillar. An intermediate level is between the first and second decks. The intermediate level includes a buffer region adjacent the cell-material-pillar. The buffer region includes a composition different from the first and second insulative materials, and different from the first and second conductive regions. Some embodiments include methods of forming integrated assemblies.
    Type: Application
    Filed: August 4, 2020
    Publication date: February 10, 2022
    Applicant: Micron Technology, Inc.
    Inventors: S.M. Istiaque Hossain, Prakash Rau Mokhna Rau, Arun Kumar Dhayalan, Damir Fazil, Joel D. Peterson, Anilkumar Chandolu, Albert Fayrushin, George Matamis, Christopher Larsen, Rokibul Islam
  • Publication number: 20220028881
    Abstract: An electronic device comprising lower and upper decks adjacent to a source. The lower and upper decks comprise tiers of alternating conductive materials and dielectric materials. Memory pillars in the lower and upper decks are configured to be operably coupled to the source. The memory pillars comprise contact plugs in the upper deck, cell films in the lower and upper decks, and fill materials in the lower and upper decks. The cell films in the upper deck are adjacent to the contact plugs and the fill materials in the upper deck are adjacent to the contact plugs. Dummy pillars are in a central region of the lower deck and the upper deck. The dummy pillars comprise an oxide material in the upper deck, the oxide material contacting the contact plugs and the fill materials. Additional electronic devices and related systems and methods are also disclosed.
    Type: Application
    Filed: July 23, 2020
    Publication date: January 27, 2022
    Inventors: S M Istiaque Hossain, Tom J. John, Darwin A. Clampitt, Anilkumar Chandolu, Prakash Rau Mokhna Rau, Christopher J. Larsen, Kye Hyun Baek
  • Publication number: 20210327885
    Abstract: An electronic device comprising a lower deck and an upper deck adjacent to a source. Each of the lower deck and the upper deck comprise tiers of alternating conductive materials and dielectric materials. Each of the lower deck and the upper deck also comprise an array region and one or more non-array regions. Memory pillars are in the lower deck and the upper deck of the array region and the memory pillars are configured to be operably coupled to the source. Dummy pillars are in the upper deck of the one or more non-array regions and the dummy pillars are configured to be electrically isolated from the source. Another conductive material is in the upper deck and the lower deck of the one or more non-array regions. Additional electronic devices and related systems and methods of forming an electronic device are also disclosed.
    Type: Application
    Filed: April 17, 2020
    Publication date: October 21, 2021
    Inventors: S M Istiaque Hossain, Christopher J. Larsen, Anilkumar Chandolu, Wesley O. McKinsey, Tom J. John, Arun Kumar Dhayalan, Prakash Rau Mokhna Rau
  • Publication number: 20210305267
    Abstract: A method used in forming a memory array comprising strings of memory cells and operative through-array-vias (TAVs) comprises forming a stack comprising vertically-alternating insulative tiers and conductive tiers. The stack comprises a TAV region and an operative memory-cell-string region. Operative channel-material strings are formed in the stack in the operative memory-cell-string region and dummy channel-material strings are formed in the stack in the TAV region. At least a majority of channel material of the dummy channel-material strings is replaced in the TAN region with insulator material and operative TAVs are formed in the TAV region. Other methods and structures independent of method are disclosed.
    Type: Application
    Filed: May 13, 2021
    Publication date: September 30, 2021
    Applicant: Micron Technology, Inc.
    Inventors: David Daycock, Prakash Rau Mokhna Rau
  • Patent number: 11101280
    Abstract: A method used in forming a memory array comprising strings of memory cells comprises forming a stack comprising vertically-alternating first tiers and second tiers comprising memory-block regions having channel-material strings therein. Conductor-material contacts are directly against the channel material of individual of the channel-material strings. First insulator material is formed directly above the conductor-material contacts. The first insulator material comprises at least one of (a) and (b), where (a): silicon, nitrogen, and one or more of carbon, oxygen, boron, and phosphorus, and (b): silicon carbide. Second insulator material is formed directly above the first insulator material and the conductor-material contacts. The second insulator material is devoid of each of the (a) and (b). Third insulator material is formed directly above the second insulator material, the first insulator material, and the conductor-material contacts. The third insulator material comprises at least one of the (a) and (b).
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: August 24, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Anilkumar Chandolu, S.M. Istiaque Hossain, Darwin A. Clampitt, Arun Kumar Dhayalan, Kevin R. Gast, Christopher Larsen, Prakash Rau Mokhna Rau, Shashank Saraf
  • Publication number: 20210257385
    Abstract: A method used in forming a memory array comprising strings of memory cells and operative through-array-vias (TAVs) comprises forming a stack comprising vertically-alternating insulative tiers and conductive tiers. The stack comprises a TAV region and an operative memory-cell-string region. The TAV region comprises spaced operative TAV areas. Operative channel-material strings are formed in the stack in the operative memory-cell-string region and dummy channel-material strings are formed in the stack in the TAV region laterally outside of and not within the operative TAV areas. Operative TAVs are formed in individual of the spaced operative TAV areas in the TAV region. Other methods and structure independent of method are disclosed.
    Type: Application
    Filed: March 29, 2021
    Publication date: August 19, 2021
    Applicant: Micron Technology, Inc.
    Inventors: Yi Hu, Merri L. Carlson, Anilkumar Chandolu, Indra V. Chary, David Daycock, Harsh Narendrakumar Jain, Matthew J. King, Jian Li, Brett D. Lowe, Prakash Rau Mokhna Rau, Lifang Xu
  • Publication number: 20210202515
    Abstract: A method used in forming a memory array comprising strings of memory cells comprises forming a stack comprising vertically-alternating first tiers and second tiers comprising memory-block regions having channel-material strings therein. Conductor-material contacts are directly against the channel material of individual of the channel-material strings. First insulator material is formed directly above the conductor-material contacts. The first insulator material comprises at least one of (a) and (b), where (a): silicon, nitrogen, and one or more of carbon, oxygen, boron, and phosphorus, and (b): silicon carbide. Second insulator material is formed directly above the first insulator material and the conductor-material contacts. The second insulator material is devoid of each of the (a) and (b). Third insulator material is formed directly above the second insulator material, the first insulator material, and the conductor-material contacts. The third insulator material comprises at least one of the (a) and (b).
    Type: Application
    Filed: December 27, 2019
    Publication date: July 1, 2021
    Applicant: Micron Technology, Inc.
    Inventors: Anilkumar Chandolu, S.M. Istiaque Hossain, Darwin A. Clampitt, Arun Kumar Dhayalan, Kevin R. Gast, Christopher Larsen, Prakash Rau Mokhna Rau, Shashank Saraf
  • Patent number: 11037944
    Abstract: A method used in forming a memory array comprising strings of memory cells and operative through-array-vias (TAVs) comprises forming a stack comprising vertically-alternating insulative tiers and conductive tiers. The stack comprises a TAV region and an operative memory-cell-string region. Operative channel-material strings are formed in the stack in the operative memory-cell-string region and dummy channel-material strings are formed in the stack in the TAV region. At least a majority of channel material of the dummy channel-material strings is replaced in the TAV region with insulator material and operative TAVs are formed in the TAV region. Other methods and structures independent of method are disclosed.
    Type: Grant
    Filed: July 10, 2019
    Date of Patent: June 15, 2021
    Assignee: Micron Technology, Inc.
    Inventors: David Daycock, Prakash Rau Mokhna Rau
  • Patent number: 11010058
    Abstract: A solid state memory component can include a plurality of bit lines, a source line, and a plurality of non-functional memory pillars. Each non-functional memory pillar is electrically isolated from one or both of the plurality of bit lines and the source line. A solid state memory component can include a plurality of pillars located in a periphery portion of the solid state memory component, and memory cells adjacent to each of the pillars. Associated systems and methods are also disclosed.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: May 18, 2021
    Assignee: Intel Corporation
    Inventors: Jun Zhao, Gowrisankar Damaria, David A. Daycock, Gordon A. Haller, Sri Sai Sivakumar Vegunta, John B. Matovu, Matthew R. Park, Prakash Rau Mokhna Rau
  • Patent number: 10985179
    Abstract: A method used in forming a memory array comprising strings of memory cells and operative through-array-vias (TAVs) comprises forming a stack comprising vertically-alternating insulative tiers and conductive tiers. The stack comprises a TAV region and an operative memory-cell-string region. The TAV region comprises spaced operative TAV areas. Operative channel-material strings are formed in the stack in the operative memory-cell-string region and dummy channel-material strings are formed in the stack in the TAV region laterally outside of and not within the operative TAV areas. Operative TAVs are formed in individual of the spaced operative TAV areas in the TAV region. Other methods and structure independent of method are disclosed.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: April 20, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Yi Hu, Merri L. Carlson, Anilkumar Chandolu, Indra V. Chary, David Daycock, Harsh Narendrakumar Jain, Matthew J. King, Jian Li, Brett D. Lowe, Prakash Rau Mokhna Rau, Lifang Xu
  • Publication number: 20210043644
    Abstract: A method used in forming a memory array comprising strings of memory cells and operative through-array-vias (TAVs) comprises forming a stack comprising vertically-alternating insulative tiers and conductive tiers. The stack comprises a TAV region and an operative memory-cell-string region. The TAV region comprises spaced operative TAV areas. Operative channel-material strings are formed in the stack in the operative memory-cell-string region and dummy channel-material strings are formed in the stack in the TAV region laterally outside of and not within the operative TAV areas. Operative TAVs are formed in individual of the spaced operative TAV areas in the TAV region. Other methods and structure independent of method are disclosed.
    Type: Application
    Filed: August 5, 2019
    Publication date: February 11, 2021
    Applicant: Micron Technology, Inc.
    Inventors: Yi Hu, Merri L. Carlson, Anilkumar Chandolu, Indra V. Chary, David Daycock, Harsh Narendrakumar Jain, Matthew J. King, Jian Li, Brett D. Lowe, Prakash Rau Mokhna Rau, Lifang Xu