Patents by Inventor Ajey P. Jacob

Ajey P. Jacob 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: 20230314717
    Abstract: Provided is an electro-optic transducer comprising: a first optical disk resonator and a second optical disk resonator, wherein the first optical disk resonator and the second optical disk resonator are optically coupled; a waveguide, the waveguide optically coupled to at least one of the first optical disk resonator and the second optical disk resonator; and a resonator, the resonator functionally coupled to at least a portion of the first optical disk resonator and the second optical disk resonator..
    Type: Application
    Filed: December 1, 2022
    Publication date: October 5, 2023
    Inventors: Ramesh Kudalippalliyalil, Sujith Chandran, Akhilesh Jaiswal, Ajey P. Jacob
  • Patent number: 11233191
    Abstract: Integrated circuits with embedded memory structures, and methods for fabricating integrated circuits are provided. An exemplary method for fabricating an integrated circuit includes forming first and second conductive interconnects over a semiconductor substrate. The method includes depositing a conductive material over the first conductive interconnect. Also, the method includes forming a memory structure over the conductive material, wherein the memory structure has an uppermost surface distanced from the first conductive interconnect by a first height. Further, the method includes forming an interlayer dielectric over the memory structure and forming a conductive via coupled to the second conductive interconnect, wherein the conductive via has a second height over the second conductive interconnect less than the first height. The method also includes forming first and second contact plugs through the interlayer dielectric.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: January 25, 2022
    Assignee: GlobalFoundries U.S. Inc.
    Inventors: Ajey P. Jacob, Eswar Ramanathan
  • Patent number: 10804416
    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to graphene detectors integrated with optical waveguide structures and methods of manufacture. The structure includes a plurality of non-planar fin structures composed of substrate material, and a non-planar sheet of graphene material extending entirely over each of the plurality of non-planar fin structures.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: October 13, 2020
    Assignee: GLOBALFOUNDRIES INC.
    Inventor: Ajey P. Jacob
  • Patent number: 10746925
    Abstract: Grating couplers and methods of fabricating a grating coupler. The grating coupler may include a plurality of grating structures arranged on a substrate and a layer arranged over the grating structures. The grating structures are composed of a first material characterized by a first refractive index with a real part. The layer is composed of a second material characterized by a second refractive index with a real part. The real part of the second refractive index is greater than the real part of the first refractive index of the first material for electromagnetic radiation with a wavelength in a range of 1 micron to 9 microns.
    Type: Grant
    Filed: January 23, 2018
    Date of Patent: August 18, 2020
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Ajey P. Jacob, Yusheng Bian
  • Publication number: 20200098976
    Abstract: Integrated circuits with embedded memory structures, and methods for fabricating integrated circuits are provided. An exemplary method for fabricating an integrated circuit includes forming first and second conductive interconnects over a semiconductor substrate. The method includes depositing a conductive material over the first conductive interconnect. Also, the method includes forming a memory structure over the conductive material, wherein the memory structure has an uppermost surface distanced from the first conductive interconnect by a first height. Further, the method includes forming an interlayer dielectric over the memory structure and forming a conductive via coupled to the second conductive interconnect, wherein the conductive via has a second height over the second conductive interconnect less than the first height. The method also includes forming first and second contact plugs through the interlayer dielectric.
    Type: Application
    Filed: September 26, 2018
    Publication date: March 26, 2020
    Inventors: Ajey P. Jacob, Eswar Ramanathan
  • Patent number: 10515679
    Abstract: A magneto-resistive memory (MRM) structure includes a source line and a first transistor that includes a source region and a drain region. The source line is electrically connected to the source region of the first transistor. The MRM structure further includes an MRM cell that includes an MRM transistor electrically in series with an MRM magnetic tunnel junction (MTJ). The MRM transistor is electrically connected to the drain region of the first transistor such that the MRM cell is electrically in series with the first transistor. Still further, the MRM structure further includes a voltage amplifier electrically connected to a mid-point node of the first transistor and the MRM transistor, a sense-amplifier electrically connected to the voltage amplifier, and a bit line electrically connected to the MRM MTJ of the MRM cell.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: December 24, 2019
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Akhilesh Jaiswal, Ajey P. Jacob, Bipul C. Paul, William Taylor, Danny Pak-Chum Shum
  • Patent number: 10453750
    Abstract: Disclosed herein are a method of forming stacked elongated nanoshapes (NSs) (e.g., stacked nanowires (NWs)) of different semiconductor materials above a substrate, a method of forming different devices (e.g., stacked field effect transistors (FETs) having different type conductivities) using the stacked NSs and the resulting structures. In the methods, stacked elongated NSs made of the same first semiconductor material can be formed above a substrate. The stacked elongated NSs can include at least a first NS and a second NS above the first NS. The second NS can then be selectively processed in order to convert the second NS from the first semiconductor material to a second semiconductor material. The first and second NSs can subsequently be used to form first and second devices, respectively, wherein the second device is stacked above the first device. The first and second device can be, for example, first and second FETs, respectively.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: October 22, 2019
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Bartlomiej J. Pawlak, Guillaume Bouche, Ajey P. Jacob
  • Publication number: 20190296160
    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to graphene detectors integrated with optical waveguide structures and methods of manufacture. The structure includes a plurality of non-planar fin structures composed of substrate material, and a non-planar sheet of graphene material extending entirely over each of the plurality of non-planar fin structures.
    Type: Application
    Filed: June 12, 2019
    Publication date: September 26, 2019
    Inventor: Ajey P. JACOB
  • Patent number: 10396121
    Abstract: The present disclosure generally relates to semiconductor structures and, more particularly, to finFETs for light emitting diode displays and methods of manufacture. The method includes: forming replacement fin structures with a doped core region, on doped substrate material; forming quantum wells over the replacement fin structures; forming a first color emitting region by doping at least one of the quantum wells over at least a first replacement fin structure of the replacement fin structures, while protecting at least a second replacement fin structure of the replacement fin structures; and forming a second color emitting region by doping another one of the quantum wells over the at least second replacement fin structure of the replacement fin structures, while protecting the first replacement fin structure and other replacement fin structures which are not to be doped.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: August 27, 2019
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Ajey P. Jacob, Srinivasa Banna, Deepak Nayak
  • Patent number: 10388691
    Abstract: A color stacked light emitting diode (LED) pixel is disclosed. The color stacked LED includes an LED pixel structure body, a base LED disposed on at least a portion of the LED pixel structure body, an intermediate LED disposed on the base LED, and a top LED disposed on the intermediate LED. The stacked LED may be an overlapping or a non-overlapping LED pixel. The LED pixel structure body may be a fin body or a nanowire body.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: August 20, 2019
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Srinivasa Banna, Deepak Nayak, Ajey P. Jacob
  • Publication number: 20190244650
    Abstract: A magneto-resistive memory (MRM) structure includes a source line and a first transistor that includes a source region and a drain region. The source line is electrically connected to the source region of the first transistor. The MRM structure further includes an MRM cell that includes an MRM transistor electrically in series with an MRM magnetic tunnel junction (MTJ). The MRM transistor is electrically connected to the drain region of the first transistor such that the MRM cell is electrically in series with the first transistor. Still further, the MRM structure further includes a voltage amplifier electrically connected to a mid-point node of the first transistor and the MRM transistor, a sense-amplifier electrically connected to the voltage amplifier, and a bit line electrically connected to the MRM MTJ of the MRM cell.
    Type: Application
    Filed: February 6, 2018
    Publication date: August 8, 2019
    Inventors: Akhilesh Jaiswal, Ajey P. Jacob, Bipul C. Paul, William Taylor, Danny Pak-Chum Shum
  • Patent number: 10374106
    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to graphene detectors integrated with optical waveguide structures and methods of manufacture. The structure includes a plurality of non-planar fin structures composed of substrate material, and a non-planar sheet of graphene material extending entirely over each of the plurality of non-planar fin structures.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: August 6, 2019
    Assignee: GLOBALFOUNDARIES INC.
    Inventor: Ajey P. Jacob
  • Publication number: 20190227229
    Abstract: Grating couplers and methods of fabricating a grating coupler. The grating coupler may include a plurality of grating structures arranged on a substrate and a layer arranged over the grating structures. The grating structures are composed of a first material characterized by a first refractive index with a real part. The layer is composed of a second material characterized by a second refractive index with a real part. The real part of the second refractive index is greater than the real part of the first refractive index of the first material for electromagnetic radiation with a wavelength in a range of 1 micron to 9 microns.
    Type: Application
    Filed: January 23, 2018
    Publication date: July 25, 2019
    Inventors: Ajey P. Jacob, Yusheng Bian
  • Patent number: 10355043
    Abstract: The present disclosure relates to semiconductor structures and, more particularly, to integrated vertical transistors and light emitting diodes and methods of manufacture. The structure includes a vertically oriented stack of material having a light emitting diode (LED) integrated with a source region and a drain region of a vertically oriented active device.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: July 16, 2019
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Ajey P. Jacob, Deepak K. Nayak, Srinivasa R. Banna
  • Patent number: 10319642
    Abstract: A method of forming Si or Ge-based and III-V based vertically integrated nanowires on a single substrate and the resulting device are provided. Embodiments include forming first trenches in a Si, Ge, III-V, or SixGe1-x substrate; forming a conformal SiN, SiOxCyNz layer over side and bottom surfaces of the first trenches; filling the first trenches with SiOx; forming a first mask over portions of the Si, Ge, III-V, or SixGe1-x substrate; removing exposed portions of the Si, Ge, III-V, or SixGe1-x substrate, forming second trenches; forming III-V, III-VxMy, or Si nanowires in the second trenches; removing the first mask and forming a second mask over the III-V, III-VxMy, or Si nanowires and intervening first trenches; removing the SiOx layer, forming third trenches; and removing the second mask.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: June 11, 2019
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Suraj Kumar Patil, Ajey P. Jacob
  • Patent number: 10283560
    Abstract: Disclosed is a device which includes first and second major substrate surfaces. The first substrate surface includes an LED with first and second terminals while the second substrate surface includes CMOS circuit components. The CMOS components and LED are coupled by through silicon via (TSV) contacts which extend through the second substrate surface.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: May 7, 2019
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Deepak Nayak, Srinivasa Banna, Ajey P. Jacob
  • Patent number: 10263151
    Abstract: The present disclosure generally relates to semiconductor structures and, more particularly, to light emitting diodes and methods of manufacture. The method includes: forming fin structures with a doped core region, on a substrate material; forming a first color emitting region by cladding the doped core region of a first fin structure of the fin structures, while protecting the doped core regions of a second fin structure and a third fin structure of the fin structures; forming a second color emitting region by cladding the doped core region of the second fin structure, while protecting the doped core regions of the first fin structure and the third fin structure; and forming a third color emitting region by cladding the doped core region of the third fin structure, while protecting the doped core regions of the first fin structure and the second fin structure.
    Type: Grant
    Filed: August 18, 2017
    Date of Patent: April 16, 2019
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Ajey P. Jacob, Srinivasa Banna, Deepak Nayak
  • Publication number: 20190107672
    Abstract: The present disclosure generally relates to semiconductor structures and, more particularly, to non-planar waveguide structures and methods of manufacture. The waveguide structure includes: non-planar structures composed of a first material; a cladding layer over the non-planar structures composed of a second material; and a material formed over the cladding layer.
    Type: Application
    Filed: October 5, 2017
    Publication date: April 11, 2019
    Inventor: Ajey P. JACOB
  • Patent number: 10217846
    Abstract: Disclosed are a method of forming vertical field effect transistor(s) and the resulting structure. In the method, five semiconductor layers are formed in a stack by epitaxial deposition. The first and fifth layers are one semiconductor material, the second and fourth layers are another and the third layer is yet another. The stack is patterned into fin(s). Vertical surfaces of the second and fourth layers of the fin(s) are etched to form upper and lower spacer cavities and these cavities are filled with upper and lower spacers. Vertical surfaces of the third layer of the fin(s) are etched to form a gate cavity and this cavity is filled with a gate. Since epitaxial deposition is used to form the semiconductor layers, the thicknesses of these layers and thereby the heights of the spacer cavities and gate cavity and the corresponding lengths of the spacers and gate can be precisely controlled.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: February 26, 2019
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Ruilong Xie, Steven Bentley, Min Gyu Sung, Chanro Park, Steven Soss, Hui Zang, Xusheng Wu, Yi Qi, Ajey P. Jacob, Murat K. Akarvardar, Siva P. Adusumilli, Jiehui Shu, Haigou Huang, John H. Zhang
  • Patent number: 10217900
    Abstract: The present disclosure generally relates to semiconductor structures and, more particularly, to light emitting diode (LED) structures and methods of manufacture. The method includes: forming a buffer layer on a substrate, the buffer layer having at least a lattice mismatch with the substrate; and relaxing the buffer layer by pixelating the buffer layer into discrete islands, prior to formation of a quantum well.
    Type: Grant
    Filed: July 6, 2017
    Date of Patent: February 26, 2019
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Deepak K. Nayak, Srinivasa R. Banna, Ajey P. Jacob