Patents by Inventor Anand S

Anand S 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: 20190172941
    Abstract: Embodiments are generally directed to a semiconductor device with released source and drain. An embodiment of a method includes etching a buffer layer of a semiconductor device to form a gate trench under a gate channel portion of a channel layer of the device; filling the gate trench with an oxide material to form an oxide isolation layer; etching one or more source/drain contact trenches in an interlayer dielectric (ILD) layer for source and drain regions of the device; etching the oxide isolation layer within the one or more source/drain contact trenches to form one or more cavities under a source/drain channel in the source and drain regions, wherein the etching of each contact trench is to expose all sides of the source/drain channel; and depositing contact metal in the one or more contact trenches, including depositing the contact metal in the cavities under the source/drain channel.
    Type: Application
    Filed: July 2, 2016
    Publication date: June 6, 2019
    Applicant: Intel Corporation
    Inventors: Willy RACHMADY, Sanaz K. GARDNER, Chandra S. MOHAPATRA, Matthew V. METZ, Gilbert DEWEY, Sean T. MA, Jack T. KAVALIEROS, Anand S. MURTHY, Tahir GHANI
  • Patent number: 10304927
    Abstract: Techniques are disclosed for forming transistor devices having reduced parasitic contact resistance relative to conventional devices. The techniques can be implemented, for example, using a standard contact stack such as a series of metals on, for example, silicon or silicon germanium (SiGe) source/drain regions. In accordance with one example such embodiment, an intermediate boron doped germanium layer is provided between the source/drain and contact metals to significantly reduce contact resistance. Numerous transistor configurations and suitable fabrication processes will be apparent in light of this disclosure, including both planar and non-planar transistor structures (e.g., FinFETs), as well as strained and unstrained channel structures. Graded buffering can be used to reduce misfit dislocation. The techniques are particularly well-suited for implementing p-type devices, but can be used for n-type devices if so desired.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: May 28, 2019
    Assignee: INTEL CORPORATION
    Inventors: Glenn A. Glass, Anand S. Murthy, Tahir Ghani
  • Publication number: 20190157310
    Abstract: Techniques are disclosed for backside contact resistance reduction for semiconductor devices with metallization on both sides (MOBS). In some embodiments, the techniques described herein provide methods to recover low contact resistance that would otherwise be present with making backside contacts, thereby reducing or eliminating parasitic external resistance that degrades transistor performance. In some embodiments, the techniques include adding an epitaxial deposition of very highly doped crystalline semiconductor material in backside contact trenches to provide enhanced ohmic contact properties. In some cases, a backside source/drain (S/D) etch-stop layer may be formed below the replacement S/D regions of the one or more transistors formed on the transfer wafer (during frontside processing), such that when backside contact trenches are being formed, the backside S/D etch-stop layer may help stop the backside contact etch process before consuming a portion or all of the S/D material.
    Type: Application
    Filed: July 1, 2016
    Publication date: May 23, 2019
    Applicant: INTEL CORPORATION
    Inventors: GLENN A. GLASS, ANAND S. MURTHY, KARTHIK JAMBUNATHAN, CHANDRA S. MOHAPATRA, MAURO J. KOBRINSKY, PATRICK MORROW
  • Patent number: 10297670
    Abstract: Techniques are disclosed for forming transistor devices having reduced parasitic contact resistance relative to conventional devices. The techniques can be implemented, for example, using a standard contact stack such as a series of metals on, for example, silicon or silicon germanium (SiGe) source/drain regions. In accordance with one example such embodiment, an intermediate boron doped germanium layer is provided between the source/drain and contact metals to significantly reduce contact resistance. Numerous transistor configurations and suitable fabrication processes will be apparent in light of this disclosure, including both planar and non-planar transistor structures (e.g., FinFETs), as well as strained and unstrained channel structures. Graded buffering can be used to reduce misfit dislocation. The techniques are particularly well-suited for implementing p-type devices, but can be used for n-type devices if so desired.
    Type: Grant
    Filed: October 31, 2016
    Date of Patent: May 21, 2019
    Assignee: INTEL CORPORATION
    Inventors: Glenn A. Glass, Anand S. Murthy, Tahir Ghani
  • Publication number: 20190148378
    Abstract: Monolithic FETs including a majority carrier channel in a first high carrier mobility semiconductor material disposed over a substrate. While a mask, such as a gate stack or sacrificial gate stack, is covering a lateral channel region, a spacer of a high carrier mobility semiconductor material is overgrown, for example wrapping around a dielectric lateral spacer, to increase effective spacing between the transistor source and drain without a concomitant increase in transistor footprint. Source/drain regions couple electrically to the lateral channel region through the high-mobility semiconductor spacer, which may be substantially undoped (i.e. intrinsic). With effective channel length for a given lateral gate dimension increased, the transistor footprint for a given off-state leakage may be reduced or off-state source/drain leakage for a given transistor footprint may be reduced, for example.
    Type: Application
    Filed: January 8, 2019
    Publication date: May 16, 2019
    Applicant: Intel Corporation
    Inventors: Gilbert DEWEY, Matthew V. METZ, Anand S. MURTHY, Tahir GHANI, Willy RACHMADY, Chandra S. MOHAPATRA, Jack T. KAVALIEROS, Glenn A. GLASS
  • Publication number: 20190148512
    Abstract: An apparatus including a transistor device including a body including a channel region between a source region and a drain region; and a gate stack on the body in the channel region, wherein at least one of the source region and the drain region of the body include a contact surface between opposing sidewalls and the contact surface includes a profile such that a height dimension of the contact surface is greater at the sidewalls than at a point between the sidewalls. A method including forming a transistor device body on a circuit substrate, the transistor device body dimension defining a channel region between a source region and a drain region; forming a groove in the body in at least one of the source region and the drain region; and forming a gate stack on the body in the channel region.
    Type: Application
    Filed: July 2, 2016
    Publication date: May 16, 2019
    Applicant: Intel Corporation
    Inventors: Willy RACHMADY, Matthew V. METZ, Gilbert DEWEY, Sean T. MA, Chandra S. MOHAPATRA, Sanaz K. GARDNER, Jack T. KAVALIEROS, Anand S. MURTHY, Tahir GHANI
  • Patent number: 10290709
    Abstract: Transistor devices having indium gallium arsenide active channels, and processes for the fabrication of the same, that enables improved carrier mobility when fabricating fin shaped active channels, such as those used in tri-gate or gate all around (GAA) devices. In one embodiment, an indium gallium arsenide material may be deposited in narrow trenches which may result in a fin that has indium rich surfaces and a gallium rich central portion. These indium rich surfaces will abut a gate oxide of a transistor and may result in high electron mobility and an improved switching speed relative to conventional homogeneous composition indium gallium arsenide active channels.
    Type: Grant
    Filed: September 19, 2014
    Date of Patent: May 14, 2019
    Assignee: Intel Corporation
    Inventors: Glenn A. Glass, Anand S. Murthy, Chandra S. Mohapatra, Tahir Ghani, Willy Rachmady, Gilbert Dewey, Matthew V. Metz, Jack T. Kavalieros
  • Patent number: 10289597
    Abstract: Several systems and methods of chip select are described. In one such method, a device maintains two identifiers, (ID_a and ID_m). When the device receives a command, it examines the values of ID_a and ID_m relative to a third reference identifier (ID_s). If either ID_a or ID_m is equivalent to ID_s, the device executes the command, otherwise, the device ignores the command. By using two different identification methods, a system has options in choosing to activate devices, being able to selectively switch between selecting multiple devices and single devices in a quick manner. In another such method, a device may have a persistent area that stores identification information such as an ID_a. Thus, system functionality may remain independent from any defect/marginality associated with the physical or logical components required for initial ID_a assignment of all devices in the system.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: May 14, 2019
    Assignee: Micron Technology, Inc.
    Inventors: Doyle Rivers, Paul D. Ruby, Anand S. Ramalingam, Rajesh Sundaram, Julie M. Walker
  • Publication number: 20190140054
    Abstract: An apparatus is described. The apparatus includes a FINFET device having a channel. The channel is composed of a first semiconductor material that is epitaxially grown on a subfin structure beneath the channel. The subfin structure is composed of a second semiconductor material that is different than the first semiconductor material. The subfm structure is epitaxially grown on a substrate composed of a third semiconductor material that is different than the first and second semiconductor materials. The subfin structure has a doped region to substantially impede leakage currents between the channel and the substrate.
    Type: Application
    Filed: June 30, 2016
    Publication date: May 9, 2019
    Inventors: Gilbert DEWEY, Matthew V. METZ, Willy RACHMADY, Anand S. MURTHY, Chandra S. MOHAPATRA, Tahir GHANI, Sean T. MA, Jack T. KAVALIEROS
  • Patent number: 10283589
    Abstract: A nanowire device having a plurality of internal spacers and a method for forming said internal spacers are disclosed. In an embodiment, a semiconductor device comprises a nanowire stack disposed above a substrate, the nanowire stack having a plurality of vertically-stacked nanowires, a gate structure wrapped around each of the plurality of nanowires, defining a channel region of the device, the gate structure having gate sidewalls, a pair of source/drain regions on opposite sides of the channel region; and an internal spacer on a portion of the gate sidewall between two adjacent nanowires, internal to the nanowire stack. In an embodiment, the internal spacers are formed by depositing spacer material in dimples etched adjacent to the channel region. In an embodiment, the dimples are etched through the channel region. In another embodiment, the dimples are etched through the source/drain region.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: May 7, 2019
    Assignee: Intel Corporation
    Inventors: Seiyon Kim, Kelin J. Kuhn, Tahir Ghani, Anand S. Murthy, Mark Armstrong, Rafael Rios, Abhijit Jayant Pethe, Willy Rachmady
  • Patent number: 10275156
    Abstract: Systems, apparatuses and methods may provide for initiating an erase of a block of non-volatile memory in response to an erase command, wherein the block includes a plurality of sub-blocks. Additionally, a failure of the erase with respect to a first subset of the plurality of sub-blocks may be tracked on an individual sub-block basis, wherein the erase is successful with respect to a second subset of the plurality of sub-blocks. In one example, use of the second subset of the plurality of sub-blocks is permitted, whereas use of the first subset of the plurality of sub-blocks is prevented.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: April 30, 2019
    Assignee: Intel Corporation
    Inventors: Anand S. Ramalingam, Jawad B. Khan, Pranav Kalavade
  • Publication number: 20190115466
    Abstract: Techniques are disclosed for incorporating high mobility strained channels into fin-based NMOS transistors (e.g., FinFETs such as double-gate, trigate, etc), wherein a stress material is cladded onto the channel area of the fin. In one example embodiment, a germanium or silicon germanium film is cladded onto silicon fins in order to provide a desired tensile strain in the core of the fin, although other fin and cladding materials can be used. The techniques are compatible with typical process flows, and cladding deposition can occur at a plurality of locations within typical process flow. In various embodiments, fins may be formed with a minimum width (or later thinned) so as to improve transistor performance. In some embodiments, a thinned fin also increases tensile strain across the core of a cladded fin. In some cases, strain in the core may be further enhanced by adding an embedded silicon epitaxial source and drain.
    Type: Application
    Filed: December 10, 2018
    Publication date: April 18, 2019
    Applicant: INTEL CORPORATION
    Inventors: STEPHEN M. CEA, ROZA KOTLYAR, HAROLD W. KENNEL, GLENN A. GLASS, ANAND S. MURTHY, WILLY RACHMADY, TAHIR GHANI
  • Patent number: 10263451
    Abstract: Apparatus, system and method to provide switchable coils in a computing device, comprising: a plurality of electrically conductive coils to transfer electromagnetic energy; a sensor coupled to a processor, to select a coil from among the plurality of electrically conductive coils; a switch to energize the selected coil; and a switch controller coupled to the switch and to the processor. In some embodiments, the plurality of coils may comprise an inductive charging interface. Some embodiments may further include a communication interface between the processor to the plurality of electrically conductive coils, the plurality of coils comprising an interface for near-field communications (NFC). The antenna coils may be arranged to provide improved NFC coverage when the computing device is in a respective predetermined physical configuration. Sensors may be used to detect the configuration and switch NFC communications to use a preferred antenna coil for the detected configuration.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: April 16, 2019
    Assignee: INTEL CORPORATION
    Inventors: Anand S. Konanur, Songnan Yang, Ulun Karacaoglu, Jiancheng Tao, Farid Adrangi
  • Publication number: 20190109234
    Abstract: Techniques are disclosed for improved integration of germanium (Ge)-rich p-MOS source/drain contacts to, for example, reduce contact resistance. The techniques include depositing the p-type Ge-rich layer directly on a silicon (Si) surface in the contact trench location, because Si surfaces are favorable for deposition of high quality conductive Ge-rich materials. In one example method, the Ge-rich layer is deposited on a surface of the Si substrate in the source/drain contact trench locations, after removing a sacrificial silicon germanium (SiGe) layer previously deposited in the source/drain locations. In another example method, the Ge-rich layer is deposited on a Si cladding layer in the contact trench locations, where the Si cladding layer is deposited on a functional p-type SiGe layer. In some cases, the Ge-rich layer comprises at least 50% Ge (and may contain tin (Sn) and/or Si) and is boron (B) doped at levels above 1E20 cm?3.
    Type: Application
    Filed: November 26, 2018
    Publication date: April 11, 2019
    Applicant: INTEL CORPORATION
    Inventors: GLENN A. GLASS, ANAND S. MURTHY, TAHIR GHANI, YING PANG, NABIL G. MISTKAWI
  • Patent number: 10254977
    Abstract: Systems, apparatuses and methods may provide for technology that reads a lower page, one or more intermediate pages and a last page from a set of multi-level non-volatile memory (NVM) cells, wherein one or more of a lower read time associated with the lower page or a last read time associated with the last page is substantially similar to an intermediate read time associated with the one or more intermediate pages.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: April 9, 2019
    Assignee: Intel Corporation
    Inventors: Anand S. Ramalingam, Pranav Kalavade
  • Publication number: 20190097055
    Abstract: Techniques are disclosed for forming a beaded fin transistor. As will be apparent in light of this disclosure, a transistor including a beaded fin configuration may be formed by starting with a multilayer finned structure, and then selectively etching one or more of the layers to form at least one necked (or relatively narrower) portion, thereby forming a beaded fin structure. The beaded fin transistor configuration has improved gate control over a finned transistor configuration having the same top down area or footprint, because the necked/narrower portions increase gate surface area as compared to a non-necked finned structure, such as finned structures used in finFET devices. Further, because the beaded fin structure remains intact (e.g., as compared to a gate-all-around (GAA) transistor configuration where nanowires are separated from each other), the parasitic capacitance problems caused by GAA transistor configurations are mitigated or eliminated.
    Type: Application
    Filed: April 1, 2016
    Publication date: March 28, 2019
    Applicant: INTEL CORPORATION
    Inventors: GILBERT DEWEY, TAHIR GHANI, WILLY RACHMADY, JACK T. KAVALIEROS, MATTHEW V. METZ, ANAND S. MURTHY, CHANDRA S. MOHAPATRA
  • Patent number: 10241631
    Abstract: A touch panel for a display may include a touch sensor with a plurality of electrode traces. A first portion of the plurality of electrode traces may form sensing lines configured to receive touch input. The touch sensor includes an edge dummy area between an edge of the touch sensor and an electrode trace of a remaining portion of the plurality of electrode traces. The edge dummy area may be located outside of the sensing lines. The touch panel may further include an antenna with a radiation structure and a ground structure. The radiation structure may be located within a routing traces area outside of the touch sensor. The ground structure may be located within the edge dummy area. The ground structure may include an electrode trace of the plurality of electrode traces located within the edge dummy area of the touch sensor.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: March 26, 2019
    Assignee: Intel Corporation
    Inventors: Mei Chai, Adesoji J. Sajuyigbe, Kwan Ho Lee, Bryce D. Horine, Harry G. Skinner, Anand S. Konanur, Ulun Karacaoglu
  • Patent number: 10243078
    Abstract: An embodiment includes a device comprising: a trench that includes a doped trench material having: (a)(i) a first bulk lattice constant and (a)(ii) at least one of a group III-V material and a group IV material; a fin structure, directly over the trench, including fin material having: (b) (ii) a second bulk lattice constant and (b)(ii) at least one of a group III-V material and a group IV material; a barrier layer, within the trench and directly contacting a bottom surface of the fin, including a barrier layer material having a third bulk lattice constant; wherein (a) the trench has an aspect ratio (depth to width) of at least 1.5:1, and (b) the barrier layer has a height not greater than a critical thickness for the barrier layer material. Other embodiments are described herein.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: March 26, 2019
    Assignee: Intel Corporation
    Inventors: Gilbert Dewey, Matthew V. Metz, Jack T. Kavalieros, Willy Rachmady, Tahir Ghani, Anand S. Murthy, Chandra S. Mohapatra, Harold W. Kennel, Glenn A. Glass
  • Patent number: 10229997
    Abstract: Techniques are disclosed for forming high mobility NMOS fin-based transistors having an indium-rich channel region electrically isolated from the sub-fin by an aluminum-containing layer. The aluminum aluminum-containing layer may be provisioned within an indium-containing layer that includes the indium-rich channel region, or may be provisioned between the indium-containing layer and the sub-fin. The indium concentration of the indium-containing layer may be graded from an indium-poor concentration near the aluminum-containing barrier layer to an indium-rich concentration at the indium-rich channel layer. The indium-rich channel layer is at or otherwise proximate to the top of the fin, according to some example embodiments. The grading can be intentional and/or due to the effect of reorganization of atoms at the interface of indium-rich channel layer and the aluminum-containing barrier layer. Numerous variations and embodiments will be appreciated in light of this disclosure.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: March 12, 2019
    Assignee: INTEL CORPORATION
    Inventors: Chandra S. Mohapatra, Anand S. Murthy, Glenn A. Glass, Tahir Ghani, Willy Rachmady, Jack T. Kavalieros, Gilbert Dewey, Matthew V. Metz, Harold W. Kennel
  • Patent number: 10210032
    Abstract: A hardware acceleration block is configured to process via a dedicated pair of registers, a plurality of commands of each of a plurality of threads received from a compute complex. The hardware acceleration block receives successive commands that are separated by at least an amount of time, from a thread of the plurality of threads. The amount of time is adequate to process a command from the thread.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: February 19, 2019
    Assignee: INTEL CORPORATION
    Inventor: Anand S. Ramalingam