Patents by Inventor Dewali Ray

Dewali Ray 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: 11011521
    Abstract: Methods, apparatuses, and systems related to removing a hard mask are described. An example method includes patterning a silicon hard mask on a semiconductor structure having a first silicate material on a working surface. The method further includes forming a first nitride material on the first silicate material. The method further includes forming a second silicate material on the first nitride material. The method further includes forming a second nitride material on the second silicate material. The method further includes an opening through the semiconductor structure using the patterned hard mask to form a pillar support. The method further includes forming a silicon liner material on the semiconductor structure. The method further includes removing the silicon liner material using a wet etch process.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: May 18, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Sevim Korkmaz, Devesh Dadhich Shreeram, Srinivasan Balakrishnan, Dewali Ray, Sanjeev Sapra, Paul A. Paduano
  • Patent number: 10964475
    Abstract: Methods, apparatuses, and systems related to forming a capacitor using a sacrificial material are described. An example method includes forming a first silicate material on a substrate. The method further includes forming a first nitride material on the first silicate material. The method further includes forming a second silicate material on the first nitride material. The method further includes forming a second nitride material on the second silicate material. The method further includes forming a sacrificial material on the second nitride material. The method further includes forming a column of capacitor material through the first silicate material, the first nitride material, the second silicate material, the second nitride material, and the sacrificial material. The method further includes removing the sacrificial material to expose a top portion of the capacitor material.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: March 30, 2021
    Assignee: Micron Technology, Inc.
    Inventors: Devesh Dadhich Shreeram, Sevim Korkmaz, Jian Li, Sanjeev Sapra, Dewali Ray
  • Publication number: 20200381437
    Abstract: Methods, apparatuses, and systems related to removing a hard mask are described. An example method includes patterning a silicon hard mask on a semiconductor structure having a first silicate material on a working surface. The method further includes forming a first nitride material on the first silicate material. The method further includes forming a second silicate material on the first nitride material. The method further includes forming a second nitride material on the second silicate material. The method further includes an opening through the semiconductor structure using the patterned hard mask to form a pillar support. The method further includes forming a silicon liner material on the semiconductor structure. The method further includes removing the silicon liner material using a wet etch process.
    Type: Application
    Filed: May 28, 2019
    Publication date: December 3, 2020
    Inventors: Sevim Korkmaz, Devesh Dadhich Shreeram, Srinivasan Balakrishnan, Dewali Ray, Sanjeev Sapra, Paul A. Paduano
  • Publication number: 20200243258
    Abstract: Methods, apparatuses, and systems related to forming a capacitor using a sacrificial material are described. An example method includes forming a first silicate material on a substrate. The method further includes forming a first nitride material on the first silicate material. The method further includes forming a second silicate material on the first nitride material. The method further includes forming a second nitride material on the second silicate material. The method further includes forming a sacrificial material on the second nitride material. The method further includes forming a column of capacitor material through the first silicate material, the first nitride material, the second silicate material, the second nitride material, and the sacrificial material. The method further includes removing the sacrificial material to expose a top portion of the capacitor material.
    Type: Application
    Filed: January 28, 2019
    Publication date: July 30, 2020
    Inventors: Devesh Dadhich Shreeram, Sevim Korkmaz, Jian Li, Sanjeev Sapra, Dewali Ray
  • Patent number: 10020287
    Abstract: Pass-through interconnect structures for microelectronic dies and associated systems and methods are disclosed herein. In one embodiment, a microelectronic die assembly includes a support substrate, a first microelectronic die positioned at least partially over the support substrate, and a second microelectronic die positioned at least partially over the first die. The first die includes a semiconductor substrate, a conductive trace extending over a portion of the semiconductor substrate, a substrate pad between the trace and the portion of the semiconductor substrate, and a through-silicon via (TSV) extending through the trace, the substrate pad, and the portion of the semiconductor substrate. The second die is electrically coupled to the support substrate via a conductive path that includes the TSV.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: July 10, 2018
    Assignee: Micron Technology, Inc.
    Inventors: David S. Pratt, Kyle K. Kirby, Dewali Ray
  • Publication number: 20160086926
    Abstract: Pass-through interconnect structures for microelectronic dies and associated systems and methods are disclosed herein. In one embodiment, a microelectronic die assembly includes a support substrate, a first microelectronic die positioned at least partially over the support substrate, and a second microelectronic die positioned at least partially over the first die. The first die includes a semiconductor substrate, a conductive trace extending over a portion of the semiconductor substrate, a substrate pad between the trace and the portion of the semiconductor substrate, and a through-silicon via (TSV) extending through the trace, the substrate pad, and the portion of the semiconductor substrate. The second die is electrically coupled to the support substrate via a conductive path that includes the TSV.
    Type: Application
    Filed: December 4, 2015
    Publication date: March 24, 2016
    Inventors: David S. Pratt, Kyle K. Kirby, Dewali Ray
  • Patent number: 9209158
    Abstract: Pass-through 3D interconnects and microelectronic dies and systems of stacked dies that include such interconnects are disclosed herein. In one embodiment, a system of stacked dies includes a first microelectronic die having a substrate, a metal substrate pad, and a first integrated circuit electrically coupled to the substrate pad. A pass-through 3D interconnect extends between front and back sides of the substrate, including through the substrate pad. The pass-through interconnect is electrically isolated from the substrate pad and electrically coupled to a second integrated circuit of a second microelectronic die attached to the back side of the substrate. In another embodiment, the first integrated circuit is a first memory device and the second integrated circuit is a second memory device, and the system uses the pass-through interconnect as part of an independent communication path to the second memory device.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: December 8, 2015
    Assignee: Micron Technology, Inc.
    Inventors: David S. Pratt, Kyle K. Kirby, Dewali Ray
  • Patent number: 8929052
    Abstract: A method of processing a substrate includes physically contacting an exposed conductive electrode of an electrostatic carrier with a conductor to electrostatically bond a substrate to the electrostatic carrier. The conductor is removed from physically contacting the exposed conductive electrode. Dielectric material is applied over the conductive electrode. The substrate is treated while it is electrostatically bonded to the electrostatic carrier. In one embodiment, a conductor is forced through dielectric material that is received over a conductive electrode of an electrostatic carrier to physically contact the conductor with the conductive electrode to electrostatically bond a substrate to the electrostatic carrier. After removing the conductor from the dielectric material, the substrate is treated while it is electrostatically bonded to the electrostatic carrier. Electrostatic carriers for retaining substrates for processing, and such assemblies, are also disclosed.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: January 6, 2015
    Assignee: Micron Technology, Inc.
    Inventors: Dewali Ray, Warren M. Farnworth, Kyle K. Kirby
  • Publication number: 20130276985
    Abstract: A method of processing a substrate includes physically contacting an exposed conductive electrode of an electrostatic carrier with a conductor to electrostatically bond a substrate to the electrostatic carrier. The conductor is removed from physically contacting the exposed conductive electrode. Dielectric material is applied over the conductive electrode. The substrate is treated while it is electrostatically bonded to the electrostatic carrier. In one embodiment, a conductor is forced through dielectric material that is received over a conductive electrode of an electrostatic carrier to physically contact the conductor with the conductive electrode to electrostatically bond a substrate to the electrostatic carrier. After removing the conductor from the dielectric material, the substrate is treated while it is electrostatically bonded to the electrostatic carrier. Electrostatic carriers for retaining substrates for processing, and such assemblies, are also disclosed.
    Type: Application
    Filed: June 18, 2013
    Publication date: October 24, 2013
    Inventors: Dewali Ray, Warren M. Farnworth, Kyle K. Kirby
  • Patent number: 8503156
    Abstract: A method of processing a substrate includes physically contacting an exposed conductive electrode of an electrostatic carrier with a conductor to electrostatically bond a substrate to the electrostatic carrier. The conductor is removed from physically contacting the exposed conductive electrode. Dielectric material is applied over the conductive electrode. The substrate is treated while it is electrostatically bonded to the electrostatic carrier. In one embodiment, a conductor is forced through dielectric material that is received over a conductive electrode of an electrostatic carrier to physically contact the conductor with the conductive electrode to electrostatically bond a substrate to the electrostatic carrier. After removing the conductor from the dielectric material, the substrate is treated while it is electrostatically bonded to the electrostatic carrier. Electrostatic carriers for retaining substrates for processing, and such assemblies, are also disclosed.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: August 6, 2013
    Assignee: Micron Technology, Inc.
    Inventors: Dewali Ray, Warren M. Farnworth, Kyle K. Kirby
  • Publication number: 20120094443
    Abstract: Pass-through 3D interconnects and microelectronic dies and systems of stacked dies that include such interconnects are disclosed herein. In one embodiment, a system of stacked dies includes a first microelectronic die having a substrate, a metal substrate pad, and a first integrated circuit electrically coupled to the substrate pad. A pass-through 3D interconnect extends between front and back sides of the substrate, including through the substrate pad. The pass-through interconnect is electrically isolated from the substrate pad and electrically coupled to a second integrated circuit of a second microelectronic die attached to the back side of the substrate. In another embodiment, the first integrated circuit is a first memory device and the second integrated circuit is a second memory device, and the system uses the pass-through interconnect as part of an independent communication path to the second memory device.
    Type: Application
    Filed: December 22, 2011
    Publication date: April 19, 2012
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: David S. Pratt, Kyle K. Kirby, Dewali Ray
  • Patent number: 8084854
    Abstract: Pass-through 3D interconnects and microelectronic dies and systems of stacked dies that include such interconnects are disclosed herein. In one embodiment, a system of stacked dies includes a first microelectronic die having a substrate, a metal substrate pad, and a first integrated circuit electrically coupled to the substrate pad. A pass-through 3D interconnect extends between front and back sides of the substrate, including through the substrate pad. The pass-through interconnect is electrically isolated from the substrate pad and electrically coupled to a second integrated circuit of a second microelectronic die attached to the back side of the substrate. In another embodiment, the first integrated circuit is a first memory device and the second integrated circuit is a second memory device, and the system uses the pass-through interconnect as part of an independent communication path to the second memory device.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: December 27, 2011
    Assignee: Micron Technology, Inc.
    Inventors: David S. Pratt, Kyle K. Kirby, Dewali Ray
  • Publication number: 20110253042
    Abstract: A method of processing a substrate includes physically contacting an exposed conductive electrode of an electrostatic carrier with a conductor to electrostatically bond a substrate to the electrostatic carrier. The conductor is removed from physically contacting the exposed conductive electrode. Dielectric material is applied over the conductive electrode. The substrate is treated while it is electrostatically bonded to the electrostatic carrier. In one embodiment, a conductor is forced through dielectric material that is received over a conductive electrode of an electrostatic carrier to physically contact the conductor with the conductive electrode to electrostatically bond a substrate to the electrostatic carrier. After removing the conductor from the dielectric material, the substrate is treated while it is electrostatically bonded to the electrostatic carrier. Electrostatic carriers for retaining substrates for processing, and such assemblies, are also disclosed.
    Type: Application
    Filed: June 27, 2011
    Publication date: October 20, 2011
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Dewali Ray, Warren M. Farnworth, Kyle K. Kirby
  • Patent number: 7989022
    Abstract: A method of processing a substrate includes physically contacting an exposed conductive electrode of an electrostatic carrier with a conductor to electrostatically bond a substrate to the electrostatic carrier. The conductor is removed from physically contacting the exposed conductive electrode. Dielectric material is applied over the conductive electrode. The substrate is treated while it is electrostatically bonded to the electrostatic carrier. In one embodiment, a conductor is forced through dielectric material that is received over a conductive electrode of an electrostatic carrier to physically contact the conductor with the conductive electrode to electrostatically bond a substrate to the electrostatic carrier. After removing the conductor from the dielectric material, the substrate is treated while it is electrostatically bonded to the electrostatic carrier. Electrostatic carriers for retaining substrates for processing, and such assemblies, are also disclosed.
    Type: Grant
    Filed: July 20, 2007
    Date of Patent: August 2, 2011
    Assignee: Micron Technology, Inc.
    Inventors: Dewali Ray, Warren M. Farnworth, Kyle K. Kirby
  • Publication number: 20090166846
    Abstract: Pass-through 3D interconnects and microelectronic dies and systems of stacked dies that include such interconnects are disclosed herein. In one embodiment, a system of stacked dies includes a first microelectronic die having a substrate, a metal substrate pad, and a first integrated circuit electrically coupled to the substrate pad. A pass-through 3D interconnect extends between front and back sides of the substrate, including through the substrate pad. The pass-through interconnect is electrically isolated from the substrate pad and electrically coupled to a second integrated circuit of a second microelectronic die attached to the back side of the substrate. In another embodiment, the first integrated circuit is a first memory device and the second integrated circuit is a second memory device, and the system uses the pass-through interconnect as part of an independent communication path to the second memory device.
    Type: Application
    Filed: December 28, 2007
    Publication date: July 2, 2009
    Applicant: Micron Technology, Inc.
    Inventors: David S. Pratt, Kyle K. Kirby, Dewali Ray
  • Publication number: 20090029152
    Abstract: A method of forming a MEMS device includes providing a first wafer having a MEMS structure in a first area and a second wafer having a second area, applying a metal nanoparticle material between the first wafer and the second wafer, and bonding a portion of the first wafer to a portion of the second wafer with the metal nanoparticle material so as to form a sealed area in the first area and the second area.
    Type: Application
    Filed: July 25, 2007
    Publication date: January 29, 2009
    Applicant: ANALOG DEVICES, INC.
    Inventors: Changhan Yun, Dewali Ray
  • Publication number: 20090022901
    Abstract: A method of processing a substrate includes physically contacting an exposed conductive electrode of an electrostatic carrier with a conductor to electrostatically bond a substrate to the electrostatic carrier. The conductor is removed from physically contacting the exposed conductive electrode. Dielectric material is applied over the conductive electrode. The substrate is treated while it is electrostatically bonded to the electrostatic carrier. In one embodiment, a conductor is forced through dielectric material that is received over a conductive electrode of an electrostatic carrier to physically contact the conductor with the conductive electrode to electrostatically bond a substrate to the electrostatic carrier. After removing the conductor from the dielectric material, the substrate is treated while it is electrostatically bonded to the electrostatic carrier. Electrostatic carriers for retaining substrates for processing, and such assemblies, are also disclosed.
    Type: Application
    Filed: July 20, 2007
    Publication date: January 22, 2009
    Inventors: Dewali Ray, Warren M. Farnworth, Kyle K. Kirby