Patents by Inventor Manjunatha Prabhu

Manjunatha Prabhu 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: 20230147981
    Abstract: A planar transistor device is disclosed including a gate structure positioned above a semiconductor substrate, the semiconductor substrate comprising a substantially planar upper surface, a channel region, a source region, a drain region, and at least one layer of a two-dimensional (2D) material that is positioned in at least one of the source region, the drain region or the channel region, wherein the layer of 2D material has a substantially planar upper surface, a substantially planar bottom surface and a substantially uniform vertical thickness across an entire length of the layer of 2D material in the gate length direction and across an entire width of the layer of 2D material in the gate width direction, wherein the substantially planar upper surface and the substantially planar bottom surface of the layer of 2D material are positioned approximately parallel to a substantially planar surface of the semiconductor substrate.
    Type: Application
    Filed: January 3, 2023
    Publication date: May 11, 2023
    Inventors: David Pritchard, Heng Yang, Hongru Ren, Neha Nayyar, Manjunatha Prabhu, Elizabeth Strehlow, Salvatore Cimino
  • Publication number: 20230102787
    Abstract: A semiconductor device comprising an active region, and a gate having side portions and a middle portion, whereby the middle portion is arranged between the side portions. The side portions and the middle portion of the gate may be arranged over the active region. The middle portion may be horizontally wider than the side portions. A first gate contact may be arranged over the middle portion.
    Type: Application
    Filed: September 28, 2021
    Publication date: March 30, 2023
    Inventors: ZHIXING ZHAO, MANJUNATHA PRABHU, SHAFIULLAH SYED
  • Patent number: 11610843
    Abstract: An illustrative device disclosed herein includes a doped well region and a conductive well tap conductively coupled to the doped well region, the conductive well tap including first and second opposing sidewall surfaces. In this example the device also includes a first sidewall spacer that has a first vertical height positioned around the conductive well tap and a second sidewall spacer positioned adjacent the first sidewall spacer along the first and second opposing sidewall surfaces of the conductive well tap, wherein the second sidewall spacer has a second vertical height that is less than the first vertical height.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: March 21, 2023
    Assignee: GLOBALFOUNDRIES U.S. Inc.
    Inventors: Hongru Ren, David Pritchard, Ryan W. Sporer, Manjunatha Prabhu
  • Patent number: 11581430
    Abstract: A planar transistor device is disclosed including a gate structure positioned above a semiconductor substrate, the semiconductor substrate comprising a substantially planar upper surface, a channel region, a source region, a drain region, and at least one layer of a two-dimensional (2D) material that is positioned in at least one of the source region, the drain region or the channel region, wherein the layer of 2D material has a substantially planar upper surface, a substantially planar bottom surface and a substantially uniform vertical thickness across an entire length of the layer of 2D material in the gate length direction and across an entire width of the layer of 2D material in the gate width direction, wherein the substantially planar upper surface and the substantially planar bottom surface of the layer of 2D material are positioned approximately parallel to a substantially planar surface of the semiconductor substrate.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: February 14, 2023
    Assignee: GLOBALFOUNDRIES U.S. Inc.
    Inventors: David Pritchard, Heng Yang, Hongru Ren, Neha Nayyar, Manjunatha Prabhu, Elizabeth Strehlow, Salvatore Cimino
  • Publication number: 20220285274
    Abstract: An illustrative device disclosed herein includes a doped well region and a conductive well tap conductively coupled to the doped well region, the conductive well tap including first and second opposing sidewall surfaces. In this example the device also includes a first sidewall spacer that has a first vertical height positioned around the conductive well tap and a second sidewall spacer positioned adjacent the first sidewall spacer along the first and second opposing sidewall surfaces of the conductive well tap, wherein the second sidewall spacer has a second vertical height that is less than the first vertical height.
    Type: Application
    Filed: March 8, 2021
    Publication date: September 8, 2022
    Inventors: Hongru Ren, David Pritchard, Ryan W. Sporer, Manjunatha Prabhu
  • Patent number: 11177182
    Abstract: One illustrative vertical transistor device disclosed herein includes a channel region comprising at least one layer of a two-dimensional (2D) material, a bottom source/drain region, a top source/drain region and a gate structure positioned all around at least the at least one layer of a two-dimensional (2D) material.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: November 16, 2021
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Heng Yang, David Pritchard, Kai Sun, Hongru Ren, Neha Nayyar, Manjunatha Prabhu, Elizabeth Strehlow, Salvatore Cimino
  • Patent number: 11094791
    Abstract: One illustrative device disclosed herein includes a bottom source/drain region and a top source/drain region positioned vertically above at least a portion of the bottom source/drain region, wherein each of the bottom source/drain region and the top source/drain region comprise at least one layer of a two-dimensional (2D) material. The device also includes a substantially vertically oriented semiconductor structure positioned vertically between the bottom source/drain region and the top source/drain region and a gate structure positioned all around an outer perimeter of the substantially vertically oriented semiconductor structure for at least a portion of the vertical height of the substantially vertically oriented semiconductor structure.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: August 17, 2021
    Assignee: GLOBALFOUNDRIES U.S. INC.
    Inventors: Heng Yang, David Pritchard, Kai Sun, Hongru Ren, Neha Nayyar, Manjunatha Prabhu, Elizabeth Strehlow, Salvatore Cimino
  • Publication number: 20210242094
    Abstract: One illustrative vertical transistor device disclosed herein includes a channel region comprising at least one layer of a two-dimensional (2D) material, a bottom source/drain region, a top source/drain region and a gate structure positioned all around at least the at least one layer of a two-dimensional (2D) material.
    Type: Application
    Filed: January 30, 2020
    Publication date: August 5, 2021
    Inventors: Heng Yang, David Pritchard, Kai Sun, Hongru Ren, Neha Nayyar, Manjunatha Prabhu, Elizabeth Strehlow, Salvatore Cimino
  • Publication number: 20210242316
    Abstract: One illustrative device disclosed herein includes a bottom source/drain region and a top source/drain region positioned vertically above at least a portion of the bottom source/drain region, wherein each of the bottom source/drain region and the top source/drain region comprise at least one layer of a two-dimensional (2D) material. The device also includes a substantially vertically oriented semiconductor structure positioned vertically between the bottom source/drain region and the top source/drain region and a gate structure positioned all around an outer perimeter of the substantially vertically oriented semiconductor structure for at least a portion of the vertical height of the substantially vertically oriented semiconductor structure.
    Type: Application
    Filed: January 30, 2020
    Publication date: August 5, 2021
    Inventors: Heng Yang, David Pritchard, Kai Sun, Hongru Ren, Neha Nayyar, Manjunatha Prabhu, Elizabeth Strehlow, Salvatore Cimino
  • Patent number: 11036913
    Abstract: A method includes accessing, from a memory, a schematic diagram of a circuit that depicts components of the circuit and, connected to one or more of the components, single-pin imaginary devices associated with group properties of the components. The method further includes automatically generating a design layout for the circuit based on the schematic diagram. The design layout comprises shapes representing the components and, on each shape representing a specific component that is connected to a single-pin imaginary device, a specific group label corresponding to a specific group property of the specific component. Placement of the shapes within the design layout is group label dependent. Accessing of the schematic diagram and the automatically generating of the design layout are performed by a layout generator tool executed by a processor of a computer-aided design system.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: June 15, 2021
    Assignee: Marvell Asia Pte., Ltd.
    Inventors: Heng Lan Lau, Manjunatha Prabhu, Vikrant Kumar Chauhan, Shawn Walsh
  • Publication number: 20210057558
    Abstract: A planar transistor device is disclosed including a gate structure positioned above a semiconductor substrate, the semiconductor substrate comprising a substantially planar upper surface, a channel region, a source region, a drain region, and at least one layer of a two-dimensional (2D) material that is positioned in at least one of the source region, the drain region or the channel region, wherein the layer of 2D material has a substantially planar upper surface, a substantially planar bottom surface and a substantially uniform vertical thickness across an entire length of the layer of 2D material in the gate length direction and across an entire width of the layer of 2D material in the gate width direction, wherein the substantially planar upper surface and the substantially planar bottom surface of the layer of 2D material are positioned approximately parallel to a substantially planar surface of the semiconductor substrate.
    Type: Application
    Filed: August 22, 2019
    Publication date: February 25, 2021
    Inventors: David Pritchard, Heng Yang, Hongru Ren, Neha Nayyar, Manjunatha Prabhu, Elizabeth Strehlow, Salvatore Cimino
  • Patent number: 10790276
    Abstract: Methods, apparatus, and systems relating to a MOSFET with ESD resistance, specifically, to a semiconductor device comprising a field-effect transistor (FET) comprising a gate, a source, and a drain, all extending parallel to each other in a first direction; at least one source electrostatic discharge (ESD) protection circuit; a source terminal disposed above and in electrical contact with the at least one source ESD protection circuit, wherein the source terminal extends in the first direction; at least one drain ESD protection circuit; and a drain terminal disposed above and in electrical contact with the at least one drain ESD protection circuit, wherein the drain terminal extends in the first direction.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: September 29, 2020
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Chien-Hsin Lee, Manjunatha Prabhu, Mahadeva Iyer Natarajan
  • Patent number: 10741542
    Abstract: High-voltage semiconductor devices with electrostatic discharge (ESD) protection and methods of fabrication are provided. The semiconductor devices include a plurality of transistors on a substrate patterned with one or more common gates extending across a portion of the substrate, and a plurality of first S/D contacts and a plurality of second S/D contacts associated with the common gate(s). The second S/D contacts are disposed over a plurality of carrier-doped regions within the substrate. One or more floating nodes are disposed above the substrate and, at least in part, between second S/D contacts to facilitate defining the plurality of carrier-doped regions within the substrate. For instance, the carrier-doped regions may be defined from a mask with a common carrier-region opening, with the floating node(s) intersecting the common carrier-region opening and facilitating defining, along with the common opening, the plurality of separate carrier-doped regions.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: August 11, 2020
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Chien-Hsin Lee, Xiangxiang Lu, Manjunatha Prabhu, Mahadeva Iyer Natarajan
  • Publication number: 20200202065
    Abstract: A method includes accessing a schematic diagram and a design layout for a circuit. The design layout includes net shapes representing nets and tracking group and voltage labels. The method further includes performing a physical verification of the design layout, including performing a layout versus schematic process. The layout versus schematic process includes converting the design layout to a new schematic diagram including nets corresponding to all of the net shapes, a single-pin first imaginary device associated with a tracking group property specified by a tracking group label indicating a tracking group, and a single-pin second imaginary device associated with a voltage property specified by a voltage label indicating high and low voltages on the net. A tracking group and voltage-aware design rules check is performed by determining whether placement of the net shapes in the design layout satisfies tracking group and voltage-aware design rules.
    Type: Application
    Filed: March 2, 2020
    Publication date: June 25, 2020
    Inventors: Heng Lan LAU, Manjunatha PRABHU, Vikrant Kurmar CHAUHAN, Shawn WALSH
  • Patent number: 10579774
    Abstract: In the disclosed design systems and methods, a schematic diagram includes nets and, connected to at least some nets, single-pin first and second imaginary devices. On any given net, a first imaginary device is associated with a tracking group property of the net (where nets in the same tracking group are in-phase) and a second imaginary device is associated with a voltage property of the net. A design layout generated based on the schematic diagram includes: net shapes representing the nets and, on net shapes that represent nets connected to the imaginary devices, tracking group and voltage labels corresponding to the tracking group and voltage properties. Net shape placement within the design layout and design rule checking are performed according to design rules that dictate placing net shapes with the same tracking group label together and further dictate minimum allowable spacing requirements depending upon the tracking group and voltage labels.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: March 3, 2020
    Assignee: Marvell International Ltd.
    Inventors: Heng Lan Lau, Manjunatha Prabhu, Vikrant Kumar Chauhan, Shawn Walsh
  • Patent number: 10529704
    Abstract: One illustrative embodiment disclosed herein relates to a semiconductor device that includes, among other things, a semiconductor substrate including a base semiconductor layer, an active semiconductor layer, and a buried insulating layer positioned between the base semiconductor layer and the active semiconductor layer. The device further includes a set of functional gate structures including at least one functional gate structure formed above the active semiconductor layer, a first source/drain region positioned in the active semiconductor layer adjacent a first functional gate structure in the set, a first auxiliary gate structure positioned adjacent the first source/drain region, and a discharge device coupled to the base semiconductor layer and the first auxiliary gate structure.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: January 7, 2020
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Salvatore Cimino, David Pritchard, Lixia Lei, Heng Yang, Manjunatha Prabhu
  • Publication number: 20190384885
    Abstract: In the disclosed design systems and methods, a schematic diagram includes nets and, connected to at least some nets, single-pin first and second imaginary devices. On any given net, a first imaginary device is associated with a tracking group property of the net (where nets in the same tracking group are in-phase) and a second imaginary device is associated with a voltage property of the net. A design layout generated based on the schematic diagram includes: net shapes representing the nets and, on net shapes that represent nets connected to the imaginary devices, tracking group and voltage labels corresponding to the tracking group and voltage properties. Net shape placement within the design layout and design rule checking are performed according to design rules that dictate placing net shapes with the same tracking group label together and further dictate minimum allowable spacing requirements depending upon the tracking group and voltage labels.
    Type: Application
    Filed: June 14, 2018
    Publication date: December 19, 2019
    Applicant: GLOBALFOUNDRIES INC.
    Inventors: Heng Lan Lau, Manjunatha Prabhu, Vikrant Kumar Chauhan, Shawn Walsh
  • Patent number: 10381826
    Abstract: Integrated circuits with electrostatic discharge (ESD) protection and methods of providing ESD protection in an integrated circuit are provided. An ESD protection circuit the ESD protection circuit may incorporate a transistor, such as a MOSFET, and a voltage limiter coupled to a gate of the transistor. The voltage limiter may be configured such that with an ESD disturbance on the voltage supply rail, Vdd, a gate voltage of the transistor of the ESD protection circuit is held below the supply voltage (Vdd) inducing base current, Isub, within the transistor to effectively shunt a current arising from the ESD event from the voltage supply rail Vdd to the voltage supply rail Vss.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: August 13, 2019
    Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.
    Inventors: Wei Gao, Manjunatha Prabhu, Tsung-Che Tsai
  • Patent number: 10373946
    Abstract: Various embodiments include fin-type field effect transistor (FinFET) structures. In some cases, a FinFET structure includes: a p-type substrate; a silicon-controlled rectifier (SCR) over the p-type substrate, the SCR including: a p-well region and an adjacent n-well region over the substrate; and a negatively charged fin over the p-well region; and a Schottky diode electrically coupled with the SCR, the Schottky diode including a gate in the n-well region, the Schottky diode positioned to mitigate electrostatic discharge (ESD) across the negatively charged fin and the n-well region in response to application of a forward voltage across the gate.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: August 6, 2019
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Chien-Hsin Lee, Mahadeva Iyer Natarajan, Manjunatha Prabhu
  • Publication number: 20190035780
    Abstract: Methods, apparatus, and systems relating to a MOSFET with ESD resistance, specifically, to a semiconductor device comprising a field-effect transistor (FET) comprising a gate, a source, and a drain, all extending parallel to each other in a first direction; at least one source electrostatic discharge (ESD) protection circuit; a source terminal disposed above and in electrical contact with the at least one source ESD protection circuit, wherein the source terminal extends in the first direction; at least one drain ESD protection circuit; and a drain terminal disposed above and in electrical contact with the at least one drain ESD protection circuit, wherein the drain terminal extends in the first direction.
    Type: Application
    Filed: September 28, 2018
    Publication date: January 31, 2019
    Applicant: GLOBALFOUNDRIES INC.
    Inventors: Chien-Hsin Lee, Manjunatha Prabhu, Mahadeva Iyer Natarajan