Patents by Inventor Varughese Mathew

Varughese Mathew 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: 20240055415
    Abstract: A semiconductor device package may include a package substrate, mold material formed over the package substrate, and a mold-embedded inductor that is embedded in the mold material. The mold-embedded inductor may be coupled to a die, such as a power management integrated circuit die, which may also be embedded in the mold material. The mold-embedded inductor may be formed by forming conductive traces and an inductor core in the mold material. For example, an active mold packaging (AMP) process and corresponding laser direct structuring (LDS) processes may be performed to form openings in the mold material and to activate surfaces of the mold material to facilitate subsequent plating of conductive material. Activated surfaces of the mold material may have micro-rough texture and may include bulk conductive material formed via the application of laser energy to additives in the mold material during the LDS process(es).
    Type: Application
    Filed: August 10, 2022
    Publication date: February 15, 2024
    Inventors: Michael B. Vincent, Varughese Mathew
  • Patent number: 10325876
    Abstract: The present disclosure provides embodiments of package devices and methods for making package devices for a semiconductor die. One embodiment includes a die mounting structure having a finished bond pad that includes a copper bond pad and a cobalt-containing layer over a top surface of the copper bond pad, and a wire bond structure that is bonded to a top surface of the cobalt-containing layer of the finished bond pad, where cobalt-containing material of the cobalt-containing layer is located between a bottom surface of the wire bond structure and the top surface of the copper bond pad such that the cobalt-containing material is present under a center portion of the wire bond structure.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: June 18, 2019
    Assignee: NXP USA, Inc.
    Inventors: Varughese Mathew, Burton J. Carpenter, Leo M. Higgins, III, Chu-Chung Lee, Tu-Anh N. Tran
  • Patent number: 10217713
    Abstract: The present disclosure provides for embodiments of packaged semiconductor devices. In one embodiment, a packaged semiconductor device for a die includes an exposed structure. The die has an active surface and a backside surface opposite the active surface. A first surface of the exposed structure is joined to die attach material, and the die attach material is further joined to the backside surface of the die. The exposed structure includes a plurality of openings through the exposed structure within a perimeter of the die, and the die is exposed through the plurality of openings.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: February 26, 2019
    Assignee: NXP USA, Inc.
    Inventors: Sheila F. Chopin, Thomas H. Koschmieder, Varughese Mathew
  • Patent number: 10199339
    Abstract: A packaged semiconductor device is made by forming a conductive pad on an external surface of an integrated circuit device, forming a passivation layer over the conductive pad, removing a portion of the passivation layer over a bond area on the conductive pad, forming a sacrificial anode around a majority of a periphery surrounding the bond area, forming a conductive bond in the bond area, and forming an encapsulating material around the conductive bond and an exposed portion of the sacrificial anode.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: February 5, 2019
    Assignee: NXP USA, Inc.
    Inventors: Sheila F. Chopin, Min Ding, Varughese Mathew, Scott S. Roth
  • Patent number: 10147697
    Abstract: A semiconductor device includes a leadframe having a flag and a plurality of bond terminals. A semiconductor die is attached to the leadframe at the flag. A bond pad is formed on the semiconductor die. A top surface layer of the bond pad includes copper having a predetermined grain orientation. A bond wire includes a first end and a second end. The bond wire is attached to the bond pad at the first end and attached to one of the bond terminals in the plurality at the second end.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: December 4, 2018
    Assignee: NXP USA, INC.
    Inventors: Rama I. Hegde, Varughese Mathew
  • Patent number: 9978614
    Abstract: A packaged semiconductor device includes a substrate, an electronic device coupled to the substrate, encapsulant including a first major surface surrounding the electronic device, and an oxygen barrier layer within fifty percent of a thickness of the encapsulant from a second major surface of the encapsulant. The oxygen barrier covers at least a portion of an area of the second major surface of the encapsulant to help reduce or eliminate warping of the encapsulant and/or the substrate of the packaged semiconductor device due to oxidation. A thickness of the oxygen barrier layer is less than 100 microns.
    Type: Grant
    Filed: June 24, 2016
    Date of Patent: May 22, 2018
    Assignee: NXP USA, Inc.
    Inventors: Nishant Lakhera, James R. Guajardo, Varughese Mathew, Akhilesh K. Singh
  • Patent number: 9640466
    Abstract: A method of manufacturing a packaged semiconductor device includes patterning and plating silver nanoparticles in bonding areas of a lead frame, forming a hydrophilic group while oxidizing the silver nanoparticles, forming wire bonds on the silver nanoparticles, and encapsulating the wire bonds and the silver nanoparticles.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: May 2, 2017
    Assignee: NXP USA, Inc.
    Inventors: Varughese Mathew, Sheila Chopin
  • Publication number: 20170098618
    Abstract: The present disclosure provides for embodiments of packaged semiconductor devices. In one embodiment, a packaged semiconductor device for a die includes an exposed structure. The die has an active surface and a backside surface opposite the active surface. A first surface of the exposed structure is joined to die attach material, and the die attach material is further joined to the backside surface of the die. The exposed structure includes a plurality of openings through the exposed structure within a perimeter of the die, and the die is exposed through the plurality of openings.
    Type: Application
    Filed: December 22, 2016
    Publication date: April 6, 2017
    Inventors: Sheila F. CHOPIN, Thomas H. KOSCHMIEDER, Varughese MATHEW
  • Patent number: 9508632
    Abstract: A semiconductor structure includes a lead frame having a flag and a plurality of leads, a semiconductor die attached to a first major surface of the flag, and a plurality of re-routed lead fingers attached to the lead frame. The plurality of leads has a first pitch. The first end of each re-routed lead finger is attached to a lead of the plurality of leads. Each re-routed lead finger extends over the semiconductor die such that a second end of each re-routed lead finger is over and spaced apart from the flag of the lead frame. The second ends of the plurality of re-routed lead fingers has a second pitch different from the first pitch.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: November 29, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Navas Khan Oratti Kalandar, Nishant Lakhera, Varughese Mathew, Akhilesh K. Singh
  • Publication number: 20160329288
    Abstract: A packaged semiconductor device is made by forming a conductive pad on an external surface of an integrated circuit device, forming a passivation layer over the conductive pad, removing a portion of the passivation layer over a bond area on the conductive pad, forming a sacrificial anode around a majority of a periphery surrounding the bond area, forming a conductive bond in the bond area, and forming an encapsulating material around the conductive bond and an exposed portion of the sacrificial anode.
    Type: Application
    Filed: July 20, 2016
    Publication date: November 10, 2016
    Inventors: SHEILA F. CHOPIN, MIN DING, VARUGHESE MATHEW, SCOTT S. ROTH
  • Publication number: 20160307780
    Abstract: A packaged semiconductor device includes a substrate, an electronic device coupled to the substrate, encapsulant including a first major surface surrounding the electronic device, and an oxygen barrier layer within fifty percent of a thickness of the encapsulant from a second major surface of the encapsulant. The oxygen barrier covers at least a portion of an area of the second major surface of the encapsulant to help reduce or eliminate warping of the encapsulant and/or the substrate of the packaged semiconductor device due to oxidation. A thickness of the oxygen barrier layer is less than 100 microns.
    Type: Application
    Filed: June 24, 2016
    Publication date: October 20, 2016
    Inventors: Nishant LAKHERA, JAMES R. GUAJARDO, VARUGHESE MATHEW, AKHILESH K. SINGH
  • Patent number: 9431313
    Abstract: A device includes an integrated circuit (IC) carrier for a semiconductor device, and a coating on the IC carrier. In the presence of an electrical field or a magnetic field, the coating includes a first functional group that attracts anions and a second functional group that attracts cations.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: August 30, 2016
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Varughese Mathew, Thomas H. Koschmieder
  • Publication number: 20160247738
    Abstract: A device includes an integrated circuit (IC) carrier for a semiconductor device, and a coating on the IC carrier. In the presence of an electrical field or a magnetic field, the coating includes a first functional group that attracts anions and a second functional group that attracts cations.
    Type: Application
    Filed: February 19, 2015
    Publication date: August 25, 2016
    Inventors: VARUGHESE MATHEW, THOMAS H. KOSCHMIEDER
  • Patent number: 9426884
    Abstract: A method of forming an electronic component includes masking a lead frame to form a mask defining an exposed area, oxidizing the exposed area of the lead frame, wherein the mask inhibits oxidation of an unexposed area, and removing the mask from the lead frame following oxidizing. A lead frame can include a metal sheet patterned to define a pad region and leads. The metal sheet includes metal oxide in a select area. The pad region is substantially free of metal oxide.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: August 23, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Sheila F. Chopin, Varughese Mathew
  • Patent number: 9412709
    Abstract: A packaged semiconductor device is made by forming a conductive pad on an external surface of an integrated circuit device, forming a passivation layer over the conductive pad, removing a portion of the passivation layer over a bond area on the conductive pad, forming a sacrificial anode around a majority of a periphery surrounding the bond area, forming a conductive bond in the bond area, and forming an encapsulating material around the conductive bond and an exposed portion of the sacrificial anode.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: August 9, 2016
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventors: Sheila F. Chopin, Min Ding, Varughese Mathew, Scott S. Roth
  • Publication number: 20160071787
    Abstract: The present disclosure provides for embodiments of packaged semiconductor devices. In one embodiment, a packaged semiconductor device for a die includes an exposed structure. The die has an active surface and a backside surface opposite the active surface. A first surface of the exposed structure is joined to die attach material, and the die attach material is further joined to the backside surface of the die. The exposed structure includes a plurality of openings through the exposed structure within a perimeter of the die, and the die is exposed through the plurality of openings.
    Type: Application
    Filed: September 8, 2014
    Publication date: March 10, 2016
    Inventors: SHEILA F. CHOPIN, THOMAS H. KOSCHMIEDER, VARUGHESE MATHEW
  • Publication number: 20160064299
    Abstract: A packaged semiconductor device includes a substrate, an electronic device coupled to the substrate, encapsulant including a first major surface surrounding the electronic device, and an oxygen barrier layer within fifty percent of a thickness of the encapsulant from a second major surface of the encapsulant. The oxygen barrier covers at least a portion of an area of the second major surface of the encapsulant to help reduce or eliminate warping of the encapsulant and/or the substrate of the packaged semiconductor device due to oxidation. A thickness of the oxygen barrier layer is less than 100 microns.
    Type: Application
    Filed: August 29, 2014
    Publication date: March 3, 2016
    Inventors: NISHANT LAKHERA, JAMES R. GUAJARDO, VARUGHESE MATHEW, AKHILESH K. SINGH
  • Publication number: 20150380376
    Abstract: The present disclosure provides embodiments of package devices and methods for making package devices for a semiconductor die. One embodiment includes a die mounting structure having a finished bond pad that includes a copper bond pad and a cobalt-containing layer over a top surface of the copper bond pad, and a wire bond structure that is bonded to a top surface of the cobalt-containing layer of the finished bond pad, where cobalt-containing material of the cobalt-containing layer is located between a bottom surface of the wire bond structure and the top surface of the copper bond pad such that the cobalt-containing material is present under a center portion of the wire bond structure.
    Type: Application
    Filed: June 25, 2014
    Publication date: December 31, 2015
    Inventors: VARUGHESE MATHEW, Burton J. Carpenter, Leo M. Higgins, III, Chu-Chung Lee, Tu-Anh N. Tran
  • Patent number: 9117756
    Abstract: A packaged electronic device including an electronic device, a conductive structure, and an encapsulant. The encapsulant has chlorides and a negatively-charged corrosion inhibitor for preventing corrosion of the conductive structure.
    Type: Grant
    Filed: January 30, 2012
    Date of Patent: August 25, 2015
    Assignee: FREESCALE SEMICONDUCTOR, INC.
    Inventor: Varughese Mathew
  • Patent number: 9093383
    Abstract: A mold compound is provided for encapsulating a semiconductor device (101). The mold compound comprises at least approximately 70% by weight silica fillers, at least approximately 10% by weight epoxy resin system, and beneficial ions that are beneficial with respect to copper ball bond corrosion. A total level of the beneficial ions in the mold compound is at least approximately 100 ppm.
    Type: Grant
    Filed: May 2, 2014
    Date of Patent: July 28, 2015
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Sheila F. Chopin, Varughese Mathew, Leo M. Higgins, III, Chu-Chung Lee