Patents by Inventor Mehul D. Shroff

Mehul D. Shroff 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: 20170084484
    Abstract: A method for forming a semiconductor structure includes forming a first metal layer over a first dielectric layer, forming a first graphene layer on at least one major surface of the first metal layer, and forming a second dielectric layer over the first metal layer and the first graphene layer. The method further includes forming an opening in the second dielectric layer which exposes the first metal layer, forming a second metal layer over the second dielectric layer and within the opening, and forming a second graphene layer on at least one major surface of the second metal layer, wherein the second graphene layer is also formed within the opening.
    Type: Application
    Filed: September 17, 2015
    Publication date: March 23, 2017
    Inventors: DOUGLAS M. REBER, Mehul D. Shroff
  • Publication number: 20170069572
    Abstract: An integrated circuit device includes a first line in a first metal layer of the integrated circuit device, wherein the first line forms at least a portion of an interconnect, a second line in a second metal layer of the integrated circuit device, and a first via that couples the first line to the second line. The integrated circuit device further includes a first stressor disposed at a first area of the interconnect, wherein the first area at least partially overlaps the first via, wherein the first stressor alters an electromigration stress profile for the interconnect by altering a stress at the first area to be less tensile.
    Type: Application
    Filed: September 2, 2016
    Publication date: March 9, 2017
    Inventors: Douglas M. Reber, Mehul D. Shroff, Edward O. Travis
  • Patent number: 9515006
    Abstract: A method for 3D device packaging utilizes through-hole metal post techniques to mechanically and electrically bond two or more dice. The first die includes a set of through-holes extending from a first surface of the first die to a second surface of the first die. The second die includes a third surface and a set of metal posts. The first die and the second die are stacked such that the third surface of the second die faces the second surface of the first die, and each metal post extends through a corresponding through-hole to a point beyond the first surface of the first die, electrically coupling the first die and the second die.
    Type: Grant
    Filed: June 12, 2014
    Date of Patent: December 6, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Douglas M. Reber, Mehul D. Shroff, Edward O. Travis
  • Patent number: 9508702
    Abstract: A method for 3D device packaging utilizes through-substrate metal posts to mechanically and electrically bond two or more dice. The first die includes a set of access holes extending from a surface of the first die to a set of pads at a metal layer of the first die. The second die includes a set of metal posts. The first die and the second die are stacked such that each metal post extends from a surface of the second die toward a corresponding pad via a corresponding access hole. The first die and second die are mechanically and electrically bonded via solder joints formed between the metal posts and the corresponding pads.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: November 29, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Douglas M Reber, Mehul D. Shroff, Edward O. Travis
  • Patent number: 9508701
    Abstract: A method for 3D device packaging utilizes through-substrate pillars to mechanically and electrically bond two or more dice. The first die includes a set of access holes extending from a surface of the first die to a set of pads at a metal layer of the first die. The second die includes a set of metal pillars. The first die and the second die are stacked such that each metal pillar extends from a surface of the second die to a corresponding pad via a corresponding access hole. The first die and second die are mechanically and electrically bonded via solder joints formed between the metal pillars and the corresponding pads.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: November 29, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Douglas M. Reber, Mehul D. Shroff, Edward O. Travis
  • Publication number: 20160343696
    Abstract: A semiconductor device includes a circuitry die and a solar cell die. The circuitry die includes a plurality of interconnect layers on a front side of the circuitry die, a metallization layer on a back side of the circuitry die, and at least one TSV (through substrate via) that makes an electrical connection between a last metal interconnect layer on the front side of the circuitry die and the metallization layer on the back side of the circuitry die. The solar cell die is configured to power the circuitry die. The solar cell die includes a transparent contact on a front side of the solar cell die. A back side of the solar cell die is attached to the back side of the circuitry die and makes electrical contact with the metallization layer on the back side of the circuitry die.
    Type: Application
    Filed: May 21, 2015
    Publication date: November 24, 2016
    Inventors: DOUGLAS M. REBER, Mehul D. Shroff
  • Publication number: 20160307791
    Abstract: A semiconductor device and a method for making the semiconductor device are provided. The method of making the semiconductor device may include patterning a layer for a first conductor and a second conductor, plating patterned portions of the layer to form the first conductor and the second conductor, removing patterned material to form an air gap between the first conductor and the second conductor, applying a self-supporting film on top of the first conductor and the second conductor to enclose the air gap, and reacting the self-supporting film causing the self-supporting film to be substantially non-conductive.
    Type: Application
    Filed: April 15, 2015
    Publication date: October 20, 2016
    Inventors: DOUGLAS M. REBER, MEHUL D. SHROFF
  • Patent number: 9472418
    Abstract: A method of forming a semiconductor device in an NVM region and in a logic region uses a semiconductor substrate and includes forming a gate region fill material over the NVM region and the logic region. The gate region fill material is patterned over the NVM region to leave a first patterned gate region fill material over the NVM region. An interlayer dielectric is formed around the first patterned gate region fill material. A first portion of the first patterned gate region fill material is removed to form a first opening and leaving a second portion of the first patterned gate region fill material. The first opening is laterally adjacent to the second portion. The first opening is filled with a charge storage layer and a conductive material that includes metal overlying the charge storage layer.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: October 18, 2016
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Mark D. Hall, Mehul D. Shroff
  • Patent number: 9466569
    Abstract: A semiconductor device includes a semiconductor substrate having a first major surface and a second major surface opposite the first major surface. A via extends through the substrate. The via is filled with conductive material and extends to at least the first major surface of the substrate. A thermal expansion inhibitor is over and in direct contact with the via proximate the first major surface. The thermal expansion inhibitor exerts a compressive stress on the conductive material closest to the thermal expansion inhibitor compared to the conductive material at a further distance from the thermal expansion inhibitor.
    Type: Grant
    Filed: November 12, 2014
    Date of Patent: October 11, 2016
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Mehul D. Shroff, Douglas M. Reber
  • Patent number: 9455220
    Abstract: A method for selecting locations within an integrated circuit device for placing stressors to manage electromigration failures includes calculating an electric current for an interconnect within the integrated circuit device and determining an electromigration stress profile for the interconnect based on the electric current. The method further includes determining an area on the interconnect for placing a stressor to alter the electromigration stress profile for the interconnect.
    Type: Grant
    Filed: May 31, 2014
    Date of Patent: September 27, 2016
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Mehul D. Shroff, Douglas M Reber, Edward O. Travis
  • Patent number: 9443804
    Abstract: A semiconductor device includes a substrate, a dielectric layer supported by the substrate, an interconnect adjacent the dielectric layer, the interconnect including a conduction material and a barrier material disposed along sidewalls of the interconnect between the conduction material and the dielectric layer, and a layer disposed over the interconnect to establish an interface between the conduction material, the barrier material, and the layer. A plate is disposed along a section of the interconnect to interrupt the interface.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: September 13, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Mehul D. Shroff, Douglas M. Reber, Edward O. Travis
  • Publication number: 20160171140
    Abstract: A mechanism is provided by which a failure analysis during design of one or more memory arrays used in a system on a chip can take into account an operational voltage use profile over the projected life of the chip. The failure analysis is then used in chip redesign decision-making or modification of the use profile. As a result, memory arrays used in chip design can be more closely matched to the actual use of the chip, rather than being overly-conservatively designed, thereby resulting in physically smaller or more efficient memory arrays and thus smaller chips.
    Type: Application
    Filed: December 11, 2014
    Publication date: June 16, 2016
    Inventors: SANJAY R. PARIHAR, MEHUL D. SHROFF
  • Publication number: 20160133574
    Abstract: A semiconductor device includes a semiconductor substrate having a first major surface and a second major surface opposite the first major surface. A via extends through the substrate. The via is filled with conductive material and extends to at least the first major surface of the substrate. A thermal expansion inhibitor is over and in direct contact with the via proximate the first major surface. The thermal expansion inhibitor exerts a compressive stress on the conductive material closest to the thermal expansion inhibitor compared to the conductive material at a further distance from the thermal expansion inhibitor.
    Type: Application
    Filed: November 12, 2014
    Publication date: May 12, 2016
    Inventors: MEHUL D. SHROFF, DOUGLAS M. REBER
  • Publication number: 20160109506
    Abstract: A semiconductor device includes a substrate, first electronic circuitry formed on the substrate, a first diode buried in the substrate under the first electronic circuitry, and a first fault detection circuit coupled to the first diode to detect energetic particle strikes on the first electronic circuitry.
    Type: Application
    Filed: October 15, 2014
    Publication date: April 21, 2016
    Inventors: MARK D. HALL, STEVEN G.H. ANDERSON, MEHUL D. SHROFF
  • Patent number: 9318409
    Abstract: A device comprising a first detector, comprising an output, disposed at a first location of an integrated circuit chip and configured to determine a first temperature information, a chip heater, comprising an input to receive a control signal, disposed at a second location of the integrated circuit and configured to heat an area of the integrated circuit device that includes the first location and the second location, based upon the control signal, and a heater controller comprising a first input coupled to the output of the first detector to receive the first temperature information, and an output coupled to the input of the chip heater, the heater controller configured to generate the control signal based upon the first temperature information.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: April 19, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Douglas M. Reber, Mehul D. Shroff, Edward O. Travis
  • Publication number: 20160093549
    Abstract: A device comprising a first detector, comprising an output, disposed at a first location of an integrated circuit chip and configured to determine a first temperature information, a chip heater, comprising an input to receive a control signal, disposed at a second location of the integrated circuit and configured to heat an area of the integrated circuit device that includes the first location and the second location, based upon the control signal, and a heater controller comprising a first input coupled to the output of the first detector to receive the first temperature information, and an output coupled to the input of the chip heater, the heater controller configured to generate the control signal based upon the first temperature information.
    Type: Application
    Filed: September 25, 2014
    Publication date: March 31, 2016
    Applicant: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Douglas M. Reber, Mehul D. Shroff, Edward O. Travis
  • Patent number: 9263441
    Abstract: A first implant is performed into a substrate to form a well in which a plurality of transistors will be formed. Each transistor of a first subset of the plurality of transistors to be formed has a width that satisfies a predetermined width constraint and each transistor of a second subset has a width that does not satisfy the constraint. A second implant is performed at locations in the well in which transistors of the first subset will be formed and not at locations in the well in which transistors of the second subset will be formed. The transistors are formed, wherein a channel region of each transistor of the first subset is formed in a portion of the substrate which received the second implant and a channel region of each transistor of the second subset is formed in a portion of the substrate which did not receive the second implant.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: February 16, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Mehul D. Shroff, William F. Johnstone, Chad E. Weintraub
  • Patent number: 9252152
    Abstract: Forming a semiconductor device in an NVM region and in a logic region using a semiconductor substrate includes forming a dielectric layer and forming a first gate material layer over the dielectric layer. In the logic region, a high-k dielectric and a barrier layer are formed. A second gate material layer is formed over the barrier and the first material layer. Patterning results in gate-region fill material over the NVM region and a logic stack comprising a portion of the second gate material layer and a portion of the barrier layer in the logic region. An opening in the gate-region fill material leaves a select gate formed from a portion of the gate-region fill material adjacent to the opening. A control gate is formed in the opening over a charge storage layer. The portion of the second gate material layer is replaced with a metallic logic gate.
    Type: Grant
    Filed: March 28, 2014
    Date of Patent: February 2, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Mark D. Hall, Mehul D. Shroff
  • Patent number: 9245817
    Abstract: A semiconductor device includes a semiconductor substrate and a plurality of clock drivers, wherein the plurality of clock drivers comprises substantially all clock drivers of the semiconductor device, and an interconnect region over the semiconductor substrate, wherein the interconnect region comprises a plurality of heat spreaders, wherein at least 25% of the plurality of clock drivers have a corresponding heat spreader of the plurality of heat spreaders. Each corresponding heat spreader of the plurality of heat spreaders covers at least 50% of a transistor within a corresponding clock driver of the plurality of clock drivers and extends across at least 70% of a perimeter of the transistor within the corresponding clock driver.
    Type: Grant
    Filed: July 15, 2014
    Date of Patent: January 26, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Edward O. Travis, Douglas M. Reber, Mehul D. Shroff
  • Patent number: 9245086
    Abstract: A technique for electromigration stress mitigation in interconnects of an integrated circuit design includes generating a maximal spanning tree of a directed graph, which represents an interconnect network of an integrated circuit design. A first point on the spanning tree having a lowest stress and a second point on the spanning tree having a highest stress are located. A maximum first stress between the first and second points is determined. In response to determining the maximum first stress between the first and second points is greater than a critical stress, a stub is added to the spanning tree at a node between the first and second points. The maximum first stress between the first and second points is re-determined subsequent to adding the stub.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: January 26, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Ertugrul Demircan, Mehul D. Shroff