Patents by Inventor Walid Hafez

Walid Hafez 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: 20190393092
    Abstract: A diode is disclosed. The diode includes a semiconductor substrate, a hard mask formed above the substrate, vertically oriented components of a first material adjacent sides of the hard mask, and laterally oriented components of the first material on top of the hard mask. The laterally oriented components are oriented in a first direction and a second direction. The diode also includes a second material on top of the first material. The second material forms a Schottky barrier.
    Type: Application
    Filed: June 22, 2018
    Publication date: December 26, 2019
    Applicant: Intel Corporation
    Inventors: Sansaptak DASGUPTA, Marko RADOSAVLJEVIC, Han Wui THEN, Paul FISCHER, Walid HAFEZ
  • Publication number: 20190393211
    Abstract: A substrate contact diode is disclosed. The substrate contact includes a first type substrate implant tap in a substrate, a second type epitaxial implant in an epitaxial layer that is on the substrate, and a first type epitaxial region above the second type epitaxial implant. A contact electrode that extends upward from the top of the first type epitaxial region to the surface of an interlayer dielectric that surrounds the contact electrode.
    Type: Application
    Filed: June 22, 2018
    Publication date: December 26, 2019
    Inventors: Han Wui THEN, Paul FISCHER, Walid HAFEZ, Marko RADOSAVLJEVIC, Sansaptak DASGUPTA
  • Publication number: 20190393311
    Abstract: A semiconductor device is disclosed. The semiconductor device includes a substrate, a superlattice that includes a plurality of layers of alternating materials above the substrate, where each of the plurality of layers corresponds to a threshold voltage, a gate trench extending into the superlattice to a predetermined one of the plurality of layers of the superlattice structure, and a high-k layer on the bottom and sidewall of the trench, the high-k layer contacting an etch stop layer of one of the plurality of layers of alternating materials. A gate is located in the trench on top of the high-k layer.
    Type: Application
    Filed: June 22, 2018
    Publication date: December 26, 2019
    Inventors: Marko RADOSAVLJEVIC, Han Wui THEN, Sansaptak DASGUPTA, Paul FISCHER, Walid HAFEZ
  • Publication number: 20190393332
    Abstract: A semiconductor device is disclosed. The semiconductor device includes a substrate, an epitaxial layer on the substrate, a semiconductor interlayer on top of the epitaxial layer, a gate conductor above the semiconductor interlayer, a gate insulator on the bottom and sides of the gate conductor and contacting the top surface of the semiconductor interlayer, a source region extending into the epitaxial layer, and a drain region extending into the epitaxial layer. The semiconductor device also includes a first polarization layer on the semiconductor interlayer between the source region and the gate conductor and a second polarization layer on the semiconductor interlayer between the drain region and the gate conductor.
    Type: Application
    Filed: June 22, 2018
    Publication date: December 26, 2019
    Inventors: Han Wui THEN, Marko RADOSAVLJEVIC, Sansaptak DASGUPTA, Paul FISCHER, Walid HAFEZ
  • Publication number: 20190393210
    Abstract: A semiconductor device is disclosed. The semiconductor device includes a substrate, an epitaxial layer above the substrate, a Schottky barrier material on the epitaxial layer, a Schottky metal contact extending into the Schottky barrier material, a fin structure that extends in a first direction, a first angled implant in a first side of the fin structure that has an orientation that is orthogonal to the first direction, and a second angled implant in a second side of the fin structure that has an orientation that is orthogonal to the first direction. The second side is opposite to the first side. A first cathode region and a second cathode region are coupled by parts of the first angled implant and the second angled implant that extend in the first direction.
    Type: Application
    Filed: June 22, 2018
    Publication date: December 26, 2019
    Inventors: Han Wui THEN, Sansaptak DASGUPTA, Marko RADOSAVLJEVIC, Paul FISCHER, Walid HAFEZ
  • Publication number: 20190393041
    Abstract: A transistor gate is disclosed. The transistor gate includes a first part above a substrate that has a first width and a second part above the first part that is centered with respect to the first part and that has a second width that is greater than the first width. The first part and the second part form a single monolithic T-gate structure.
    Type: Application
    Filed: June 20, 2018
    Publication date: December 26, 2019
    Inventors: Marko RADOSAVLJEVIC, Han Wui THEN, Sansaptak DASGUPTA, Paul FISCHER, Walid HAFEZ
  • Publication number: 20190378899
    Abstract: Embodiments described herein comprise a transistor device that comprises a GaN channel. In an embodiment, the transistor device further comprises a source region and a drain region. The source region may be separated from the drain region by the GaN channel. In an embodiment, the source region and the drain region comprise surfaces with a root mean squared (RMS) surface roughness greater than 3 nm. In an embodiment, the transistor device further comprises a gate electrode over the GaN channel, a source contact in contact with source region, and a drain contact in contact with the drain region.
    Type: Application
    Filed: June 6, 2018
    Publication date: December 12, 2019
    Inventors: Marko RADOSAVLJEVIC, Han Wui THEN, Sansaptak DASGUPTA, Paul FISCHER, Walid HAFEZ
  • Publication number: 20190356032
    Abstract: Embodiments of the invention include an electromagnetic waveguide and methods of forming the electromagnetic waveguide. In an embodiment the electromagnetic waveguide includes a first spacer and a second spacer. In an embodiment, the first and second spacer each have a reentrant profile. The electromagnetic waveguide may also include a conductive body formed between in the first and second spacer, and a void formed within the conductive body. In an additional embodiment, the electromagnetic waveguide may include a first spacer and a second spacer. Additionally, the electromagnetic waveguide may include a first portion of a conductive body formed along sidewalls of the first and second spacer and a second portion of the conductive body formed between an upper portion of the first portion of the conductive body. In an embodiment, the first portion of the conductive body and the second portion of the conductive body define a void through the electromagnetic waveguide.
    Type: Application
    Filed: December 30, 2016
    Publication date: November 21, 2019
    Inventors: Rahul RAMASWAMY, Chia-Hong JAN, Walid HAFEZ, Neville DIAS, Hsu-Yu CHANG, Roman OLAC-VAW, Chen-Guan LEE
  • Publication number: 20190278022
    Abstract: Embodiments of the invention include an electromagnetic waveguide and methods of forming electromagnetic waveguides. In an embodiment, the electromagnetic waveguide may include a first semiconductor fin extending up from a substrate and a second semiconductor fin extending up from the substrate. The fins may be bent towards each other so that a centerline of the first semiconductor fin and a centerline of the second semiconductor fin extend from the substrate at a non-orthogonal angle. Accordingly, a cavity may be defined by the first semiconductor fin, the second semiconductor fin, and a top surface of the substrate. Embodiments of the invention may include a metallic layer and a cladding layer lining the surfaces of the cavity. Additional embodiments may include a core formed in the cavity.
    Type: Application
    Filed: December 30, 2016
    Publication date: September 12, 2019
    Inventors: Rahul RAMASWAMY, Chia-Hong JAN, Walid HAFEZ, Neville DIAS, Hsu-Yu CHANG, Roman W. OLAC-VAW, Chen-Guan LEE
  • Patent number: 10243034
    Abstract: Integrated circuit structures including a pillar resistor disposed over a surface of a substrate, and fabrication techniques to form such a resistor in conjunction with fabrication of a transistor over the substrate. Following embodiments herein, a small resistor footprint may be achieved by orienting the resistive length orthogonally to the substrate surface. In embodiments, the vertical resistor pillar is disposed over a first end of a conductive trace, a first resistor contact is further disposed on the pillar, and a second resistor contact is disposed over a second end of a conductive trace to render the resistor footprint substantially independent of the resistance value. Formation of a resistor pillar may be integrated with a replacement gate transistor process by concurrently forming the resistor pillar and sacrificial gate out of a same material, such as polysilicon. Pillar resistor contacts may also be concurrently formed with one or more transistor contacts.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: March 26, 2019
    Assignee: Intel Corporation
    Inventors: Chen-Guan Lee, Walid Hafez, Chia-Hong Jan
  • Patent number: 10192969
    Abstract: Semiconductor device(s) including a transistor with a gate electrode having a work function monotonically graduating across the gate electrode length, and method(s) to fabricate such a device. In embodiments, a gate metal work function is graduated between source and drain edges of the gate electrode for improved high voltage performance. In embodiments, thickness of a gate metal graduates from a non-zero value at the source edge to a greater thickness at the drain edge. In further embodiments, a high voltage transistor with graduated gate metal thickness is integrated with another transistor employing a gate electrode metal of nominal thickness. In embodiments, a method of fabricating a semiconductor device includes graduating a gate metal thickness between a source end and drain end by non-uniformly recessing the first gate metal within the first opening relative to the surrounding dielectric.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: January 29, 2019
    Assignee: Intel Corporation
    Inventors: Chia-Hong Jan, Walid Hafez, Hsu-Yu Chang, Roman Olac-Vaw, Ting Chang, Rahul Ramaswamy, Pei-Chi Liu, Neville Dias
  • Patent number: 9972616
    Abstract: Methods of forming resistor structures with tunable temperature coefficient of resistance are described. Those methods and structures may include forming an opening in a resistor material adjacent source/drain openings on a device substrate, forming a dielectric material between the resistor material and the source/drain openings, and modifying the resistor material, wherein a temperature coefficient resistance (TCR) of the resistor material is tuned by the modification. The modifications include adjusting a length of the resistor, forming a compound resistor structure, and forming a replacement resistor.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: May 15, 2018
    Assignee: Intel Corporation
    Inventors: Walid Hafez, Chen-Guan Lee, Chia-Hong Jan
  • Publication number: 20180108727
    Abstract: Integrated circuit structures including a pillar resistor disposed over a surface of a substrate, and fabrication techniques to form such a resistor in conjunction with fabrication of a transistor over the substrate. Following embodiments herein, a small resistor footprint may be achieved by orienting the resistive length orthogonally to the substrate surface. In embodiments, the vertical resistor pillar is disposed over a first end of a conductive trace, a first resistor contact is further disposed on the pillar, and a second resistor contact is disposed over a second end of a conductive trace to render the resistor footprint substantially independent of the resistance value. Formation of a resistor pillar may be integrated with a replacement gate transistor process by concurrently forming the resistor pillar and sacrificial gate out of a same material, such as polysilicon. Pillar resistor contacts may also be concurrently formed with one or more transistor contacts.
    Type: Application
    Filed: August 2, 2017
    Publication date: April 19, 2018
    Inventors: Chen-Guan LEE, Walid HAFEZ, Chia-Hong JAN
  • Patent number: 9748327
    Abstract: Integrated circuit structures including a pillar resistor disposed over a surface of a substrate, and fabrication techniques to form such a resistor in conjunction with fabrication of a transistor over the substrate. Following embodiments herein, a small resistor footprint may be achieved by orienting the resistive length orthogonally to the substrate surface. In embodiments, the vertical resistor pillar is disposed over a first end of a conductive trace, a first resistor contact is further disposed on the pillar, and a second resistor contact is disposed over a second end of a conductive trace to render the resistor footprint substantially independent of the resistance value. Formation of a resistor pillar may be integrated with a replacement gate transistor process by concurrently forming the resistor pillar and sacrificial gate out of a same material, such as polysilicon. Pillar resistor contacts may also be concurrently formed with one or more transistor contacts.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: August 29, 2017
    Assignee: Intel Corporation
    Inventors: Chen-Guan Lee, Walid Hafez, Chia-Hong Jan
  • Publication number: 20170207312
    Abstract: Semiconductor device(s) including a transistor with a gate electrode having a work function monotonically graduating across the gate electrode length, and method(s) to fabricate such a device. In embodiments, a gate metal work function is graduated between source and drain edges of the gate electrode for improved high voltage performance. In embodiments, thickness of a gate metal graduates from a non-zero value at the source edge to a greater thickness at the drain edge. In further embodiments, a high voltage transistor with graduated gate metal thickness is integrated with another transistor employing a gate electrode metal of nominal thickness. In embodiments, a method of fabricating a semiconductor device includes graduating a gate metal thickness between a source end and drain end by non-uniformly recessing the first gate metal within the first opening relative to the surrounding dielectric.
    Type: Application
    Filed: August 19, 2014
    Publication date: July 20, 2017
    Inventors: Chia-Hong Jan, Walid Hafez, Hsu-Yu Chang, Roman Olac-Vaw, Ting Chang, Rahul Ramaswamy, Pei-Chi Liu, Neville Dias
  • Publication number: 20170162503
    Abstract: A MOS antifuse with an accelerated dielectric breakdown induced by a void or seam formed in the electrode. In some embodiments, the programming voltage at which a MOS antifuse undergoes dielectric breakdown is reduced through intentional damage to at least part of the MOS antifuse dielectric. In some embodiments, damage may be introduced during an etchback of an electrode material which has a seam formed during backfilling of the electrode material into an opening having a threshold aspect ratio. In further embodiments, a MOS antifuse bit-cell includes a MOS transistor and a MOS antifuse. The MOS transistor has a gate electrode that maintains a predetermined voltage threshold swing, while the MOS antifuse has a gate electrode with a void accelerated dielectric breakdown.
    Type: Application
    Filed: August 19, 2014
    Publication date: June 8, 2017
    Inventors: Roman OLAC-VAW, Walid HAFEZ, Chia-Hong JAN, Hsu-Yu CHANG, Ting CHANG, Rahul RAMASWAMY, Pei-Chi LIU, Neville DIAS
  • Publication number: 20170162693
    Abstract: Non-planar transistor devices which include oxide isolation structures formed in semiconductor bodies thereof through the formation of an oxidizing catalyst layer on the semiconductor bodies followed by an oxidation process. In one embodiment, the semiconductor bodies may be formed from silicon-containing materials and the oxidizing catalyst layer may comprise aluminum oxide, wherein oxidizing the semiconductor body to form an oxide isolation zone forms a semiconductor body first portion and a semiconductor body second portion with the isolation zone substantially electrically separating the semiconductor body first portion and the semiconductor body second portion.
    Type: Application
    Filed: August 5, 2014
    Publication date: June 8, 2017
    Applicant: INTEL CORPORATION
    Inventors: Gopinath Bhimarasetti, Walid Hafez, Joodong Park, Weimin Han, Raymond Cotner
  • Publication number: 20170162646
    Abstract: Integrated circuit structures including a pillar resistor disposed over a surface of a substrate, and fabrication techniques to form such a resistor in conjunction with fabrication of a transistor over the substrate. Following embodiments herein, a small resistor footprint may be achieved by orienting the resistive length orthogonally to the substrate surface. In embodiments, the vertical resistor pillar is disposed over a first end of a conductive trace, a first resistor contact is further disposed on the pillar, and a second resistor contact is disposed over a second end of a conductive trace to render the resistor footprint substantially independent of the resistance value. Formation of a resistor pillar may be integrated with a replacement gate transistor process by concurrently forming the resistor pillar and sacrificial gate out of a same material, such as polysilicon. Pillar resistor contacts may also be concurrently formed with one or more transistor contacts.
    Type: Application
    Filed: June 18, 2014
    Publication date: June 8, 2017
    Inventors: Chen-Guan LEE, Walid HAFEZ, Chia-Hong JAN
  • Publication number: 20160336332
    Abstract: An antifuse may include a non-planar conductive terminal having a high-z portion extending to a greater z-height than a low-z portion. A second conductive terminal is disposed over the low-z portion and separated from the first terminal by at least one intervening dielectric material. Fabrication of an antifuse may include forming a first opening in a first dielectric material disposed over a substrate, and undercutting a region of the first dielectric material. The undercut region of the first dielectric material is lined with a second dielectric material, such as gate dielectric material, through the first opening. A conductive first terminal material backfills the lined undercut region through the first opening. A second opening through the first dielectric material exposes the second dielectric material lining the undercut region. A conductive second terminal material is backfilled in the second opening.
    Type: Application
    Filed: February 11, 2014
    Publication date: November 17, 2016
    Inventors: Chen-Guan LEE, Walid HAFEZ, Chia-Hong JAN
  • Publication number: 20160181241
    Abstract: Methods of forming resistor structures with tunable temperature coefficient of resistance are described. Those methods and structures may include forming an opening in a resistor material adjacent source/drain openings on a device substrate, forming a dielectric material between the resistor material and the source/drain openings, and modifying the resistor material, wherein a temperature coefficient resistance (TCR) of the resistor material is tuned by the modification. The modifications include adjusting a length of the resistor, forming a compound resistor structure, and forming a replacement resistor.
    Type: Application
    Filed: September 27, 2013
    Publication date: June 23, 2016
    Inventors: Walid HAFEZ, Chen-Guan LEE, Chia-Hong JAN