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: 20170358562
    Abstract: A display system is disclosed. The display system comprises a light emitting diode (LED) device and a backplane (BP) device. The LED device comprises a plurality of LEDs having LED terminals. An LED bonding surface comprising a dielectric layer with LED bonding surface contact pads is coupled to diode terminals of the LEDs. The backplane (BP) device comprises a BP substrate having top and bottom surfaces. A plurality of system on chip (SoC) chips are bonded to chip pads disposed on a bottom surface of the BP device. The SoC chips are electrically coupled to the CMOS components of the BP device and LEDs of the LED device.
    Type: Application
    Filed: May 18, 2017
    Publication date: December 14, 2017
    Inventors: Srinivasa BANNA, Sanjay JHA, Deepak NAYAK, Ajey P. JACOB
  • Patent number: 9842897
    Abstract: A bulk finFET with partial dielectric isolation is disclosed. The dielectric isolation is disposed underneath the channel, and essentially bounded by the channel, such that it does not extend laterally beyond the channel under the source and drain regions. This allows increased volume of SiGe source and drain stressor regions placed adjacent to the channel, allowing for a more strained channel, which improves carrier mobility. An N+ doped silicon region is disposed below the dielectric isolation and extends laterally beyond the channel and underneath the stressor source and drain regions, forming a reverse-biased p/n junction with the P+ doped source and drain SiGe stressor to minimize leakage currents from under the insulator.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: December 12, 2017
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Murat K. Akarvardar, Ajey P. Jacob
  • Patent number: 9831131
    Abstract: Methods for forming a NW with multiple devices having alternate channel materials and resulting devices are disclosed. Embodiments include forming a first stack of semiconductor layers including a first doped Si layer, a first channel layer, and a second doped Si layer, respectively, on a Si substrate; forming a second stack including a first doped SiGe layer, a second channel layer, and a second doped SiGe layer, respectively, on the first stack; forming a vertical nanowire structure by directional etching, along a three-dimensional plane, the second and first stacks, respectively, down to an upper surface of the Si substrate; forming lower S/D regions and a lower gate-stack surrounding the first stack; forming upper S/D regions and an upper gate-stack surrounding the second stack; and forming contacts to the lower S/D regions, a first gate electrode, an upper S/D region, an upper gate electrode, and the second doped SiGe layer.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: November 28, 2017
    Assignee: GLOBALFOUNDRIES INC.
    Inventor: Ajey P. Jacob
  • Publication number: 20170338277
    Abstract: Devices and methods of forming the devices are disclosed. The device includes a substrate and a color LED pixel disposed on the substrate. The color LED pixel includes a red LED, a green LED and a blue LED. Each of the color LED includes a specific color LED body disposed on the respective color region on the substrate, a specific color multiple quantum well (MQW) on the respective color LED body and a specific color top LED layer disposed over the respective color MQW. The MQWs of the red LED, green LED and blue LED includes at least an indium gallium nitride (InxGa1?xN) layer and a gallium nitride (GaN), where x is the atomic percentage of In in the InxGa1?xN layer, and the MQWs of the red LED, green LED and blue LED have different bandgaps by varying x of the InxGa1?xN layer in the red LED, the green LED and the blue LED.
    Type: Application
    Filed: May 18, 2017
    Publication date: November 23, 2017
    Inventors: Srinivasa BANNA, Deepak NAYAK, Ajey P. JACOB
  • Publication number: 20170338275
    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: Application
    Filed: May 18, 2017
    Publication date: November 23, 2017
    Inventors: Srinivasa BANNA, Deepak NAYAK, Ajey P. JACOB
  • Publication number: 20170338276
    Abstract: Disclosed is a multi-color semiconductor LED display with integrated with CMOS circuit components, such as thin film transistors (TFTs). LEDs of the display are disposed on a first major surface of a substrate while CMOS circuit components which are configured as circuitry for operating the display are disposed on a second opposing major surface of the substrate. The CMOS components and LEDs are coupled by through silicon via (TSV) contacts through the substrate. Integrating CMOS components with LED on one substrate enhances compactness of the display. Other advantages include low power and low cost with high brightness and resolution desired for portable applications, including virtual reality and augmented reality applications.
    Type: Application
    Filed: May 18, 2017
    Publication date: November 23, 2017
    Inventors: Deepak NAYAK, Srinivasa BANNA, Ajey P. JACOB
  • Patent number: 9812393
    Abstract: Programmable via devices and fabrication methods thereof are presented. The programmable via devices include, for instance, a first metal layer and a second metal layer electrically connected by a via link. The via link includes a semiconductor portion and a metal portion, where the via link facilitates programming of the programmable via device by applying a programming current through the via link to migrate materials between the semiconductor portion and the metal portion to facilitate a change of an electrical resistance of the via link. In one embodiment, the programming current facilitates formation of at least one gap region within the via link, the at least one gap region facilitating the change of the electrical resistance of the via link.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: November 7, 2017
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Ajey P. Jacob, Suraj K. Patil, Min-hwa Chi
  • Patent number: 9754843
    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-VxMy, or Si nanowires and intervening first trenches; removing the SiOx layer, forming third trenches; and removing the second mask.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: September 5, 2017
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Suraj Kumar Patil, Ajey P. Jacob
  • Patent number: 9691497
    Abstract: Programmable devices and fabrication methods thereof are presented. The programmable devices include, for instance, a first electrode and a second electrode electrically connected by a link portion. The link portion includes one material of a metal material or a semiconductor material and the first and second electrodes includes the other material of the metal material or the semiconductor material. For example, the link portion facilitates programming the programmable device by applying a programming current between the first electrode and the second electrode to facilitate migration of the one material of the link portion towards at least one of the first or second electrodes. In one embodiment, the programming current is configured to heat the link portion to facilitate the migration of the one material of the link portion towards the at least one of the first or second electrodes.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: June 27, 2017
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Suraj K. Patil, Min-hwa Chi, Ajey P. Jacob
  • Patent number: 9614058
    Abstract: One illustrative device disclosed herein includes a substrate fin formed in a substrate comprised of a first semiconductor material, wherein at least a sidewall of the substrate fin is positioned substantially in a <100> crystallographic direction of the crystalline structure of the substrate, a replacement fin structure positioned above the substrate fin, wherein the replacement fin structure is comprised of a semiconductor material that is different from the first semiconductor material, and a gate structure positioned around at least a portion of the replacement fin structure.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: April 4, 2017
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Jody Fronheiser, Ajey P. Jacob, Witold P. Maszara, Kerem Akarvardar
  • Publication number: 20170092583
    Abstract: Programmable via devices and fabrication methods thereof are presented. The programmable via devices include, for instance, a first metal layer and a second metal layer electrically connected by a via link. The via link includes a semiconductor portion and a metal portion, where the via link facilitates programming of the programmable via device by applying a programming current through the via link to migrate materials between the semiconductor portion and the metal portion to facilitate a change of an electrical resistance of the via link. In one embodiment, the programming current facilitates formation of at least one gap region within the via link, the at least one gap region facilitating the change of the electrical resistance of the via link.
    Type: Application
    Filed: September 28, 2015
    Publication date: March 30, 2017
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Ajey P. JACOB, Suraj K. PATIL, Min-hwa CHI
  • Publication number: 20170092373
    Abstract: Programmable devices and fabrication methods thereof are presented. The programmable devices include, for instance, a first electrode and a second electrode electrically connected by a link portion. The link portion includes one material of a metal material or a semiconductor material and the first and second electrodes includes the other material of the metal material or the semiconductor material. For example, the link portion facilitates programming the programmable device by applying a programming current between the first electrode and the second electrode to facilitate migration of the one material of the link portion towards at least one of the first or second electrodes. In one embodiment, the programming current is configured to heat the link portion to facilitate the migration of the one material of the link portion towards the at least one of the first or second electrodes.
    Type: Application
    Filed: September 28, 2015
    Publication date: March 30, 2017
    Applicant: GLOBALFOUNDRIES Inc.
    Inventors: Suraj K. PATIL, Min-hwa CHI, Ajey P. JACOB
  • Publication number: 20170062442
    Abstract: Methods and structures for programmable device fabrication are provided. The methods for fabricating a programmable device include, for example forming at least one via opening in a layer of the programmable device and providing a catalyzing material over a lower surface of the at least one via opening; forming a plurality of nanowires or nanotubes in the at least one via opening using the catalyzing material as a catalyst for the forming of the plurality of nanowires or nanotubes; and providing a dielectric material in the at least one via opening so that the dielectric material surrounds the plurality of nanowires or nanotubes. The programmable device may, in subsequent or separate programming steps, have programming of the programmable device made permanent via thermal oxidation of the dielectric material and the plurality of nanowires or nanotubes, leaving a non-conducting material behind in the at least one via opening.
    Type: Application
    Filed: September 1, 2015
    Publication date: March 2, 2017
    Applicant: GLOBALFOUNDRIES INC.
    Inventors: Suraj K. PATIL, Ajey P. JACOB, Min-hwa CHI
  • Patent number: 9564447
    Abstract: Methods and structures for programmable device fabrication are provided. The methods for fabricating a programmable device include, for example forming at least one via opening in a layer of the programmable device and providing a catalyzing material over a lower surface of the at least one via opening; forming a plurality of nanowires or nanotubes in the at least one via opening using the catalyzing material as a catalyst for the forming of the plurality of nanowires or nanotubes; and providing a dielectric material in the at least one via opening so that the dielectric material surrounds the plurality of nanowires or nanotubes. The programmable device may, in subsequent or separate programming steps, have programming of the programmable device made permanent via thermal oxidation of the dielectric material and the plurality of nanowires or nanotubes, leaving a non-conducting material behind in the at least one via opening.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: February 7, 2017
    Assignee: GLOBALFOUNDRIES INC.
    Inventors: Suraj K. Patil, Ajey P. Jacob, Min-hwa Chi
  • Patent number: 9564367
    Abstract: One illustrative method disclosed herein involves forming a first fin for a first FinFET device in and above a semiconducting substrate, wherein the first fin is comprised of a first semiconductor material that is different from the material of the semiconducting substrate and, after forming the first fin, forming a second fin for a second FinFET device that is formed in and above the semiconducting substrate, wherein the second fin is comprised of a second semiconductor material that is different from the material of the semiconducting substrate and different from the first semiconductor material.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: February 7, 2017
    Assignee: GLOBALFOUNDRIES Inc.
    Inventors: Ajey P. Jacob, Witold P. Maszara, Kerem Akarvardar
  • Publication number: 20160293706
    Abstract: A FinFET device includes a substrate, a gate structure positioned above the substrate, and sidewall spacers positioned adjacent to the gate structure. An epi semiconductor material is positioned in source and drain regions of the FinFET device and laterally outside of the sidewall spacers. A fin extends laterally under the gate structure and the sidewall spacers in a gate length direction of the FinFET device, wherein the end surfaces of the fin abut and engage the epi semiconductor material. A stressed material is positioned in a channel cavity located below the fin, above the substrate, and laterally between the epi semiconductor material, the stressed material having a top surface that abuts and engages a bottom surface of the fin, a bottom surface that abuts and engages the substrate, and end surfaces that abut and engage the epi semiconductor material.
    Type: Application
    Filed: June 20, 2016
    Publication date: October 6, 2016
    Inventors: Xiuyu Cai, Ruilong Xie, Kangguo Cheng, Ali Khakifirooz, Ajey P. Jacob, Witold P. Maszara
  • Publication number: 20160284802
    Abstract: A bulk finFET with partial dielectric isolation is disclosed. The dielectric isolation is disposed underneath the channel, and essentially bounded by the channel, such that it does not extend laterally beyond the channel under the source and drain regions. This allows increased volume of SiGe source and drain stressor regions placed adjacent to the channel, allowing for a more strained channel, which improves carrier mobility. An N+ doped silicon region is disposed below the dielectric isolation and extends laterally beyond the channel and underneath the stressor source and drain regions, forming a reverse-biased p/n junction with the P+ doped source and drain SiGe stressor to minimize leakage currents from under the insulator.
    Type: Application
    Filed: June 7, 2016
    Publication date: September 29, 2016
    Applicant: GLOBALFOUNDRIES INC.
    Inventors: Murat K. Akarvardar, Ajey P. Jacob
  • Patent number: 9412822
    Abstract: One method disclosed includes, among other things, covering the top surface and a portion of the sidewalls of an initial fin structure with etch stop material, forming a sacrificial gate structure around the initial fin structure, forming a sidewall spacer adjacent the sacrificial gate structure, removing the sacrificial gate structure, with the etch stop material in position, to thereby define a replacement gate cavity, performing at least one etching process through the replacement gate cavity to remove a portion of the semiconductor substrate material of the fin structure positioned under the replacement gate cavity that is not covered by the etch stop material so as to thereby define a final fin structure and a channel cavity positioned below the final fin structure and substantially filling the channel cavity with a stressed material.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: August 9, 2016
    Assignees: GLOBALFOUNDRIES Inc., International Business Machines Corporation
    Inventors: Xiuyu Cai, Ruilong Xie, Kangguo Cheng, Ali Khakifirooz, Ajey P. Jacob, Witold P. Maszara
  • Patent number: 9385233
    Abstract: A bulk finFET with partial dielectric isolation is disclosed. The dielectric isolation is disposed underneath the channel, and essentially bounded by the channel, such that it does not extend laterally beyond the channel under the source and drain regions. This allows increased volume of SiGe source and drain stressor regions placed adjacent to the channel, allowing for a more strained channel, which improves carrier mobility. An N+ doped silicon region is disposed below the dielectric isolation and extends laterally beyond the channel and underneath the stressor source and drain regions, forming a reverse-biased p/n junction with the P+ doped source and drain SiGe stressor to minimize leakage currents from under the insulator.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: July 5, 2016
    Assignee: GlobalFoundries Inc.
    Inventors: Murat K. Akarvardar, Ajey P. Jacob
  • Patent number: 9349840
    Abstract: An illustrative method includes forming a FinFET device above structure comprising a semiconductor substrate, a first epi semiconductor material and a second epi semiconductor material that includes forming an initial fin structure that comprises portions of the semiconductor substrate, the first epi material and the second epi material, recessing a layer of insulating material such that a portion, but not all, of the second epi material portion of the initial fin structure is exposed so as to define a final fin structure, forming a gate structure above and around the final fin structure, removing the first epi material of the initial fin structure and thereby define an under-fin cavity under the final fin structure and substantially filling the under-fin cavity with a stressed material.
    Type: Grant
    Filed: October 14, 2015
    Date of Patent: May 24, 2016
    Assignees: GLOBALFOUNDRIES Inc., International Business Machines Corporation
    Inventors: Xiuyu Cai, Ruilong Xie, Ajey P. Jacob, Witold P. Maszara, Kangguo Cheng, Ali Khakifirooz