Patents by Inventor John A. Fitzsimmons

John A. Fitzsimmons 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).

  • Patent number: 8970041
    Abstract: An assembly can include a microelectronic element such as, for example, a semiconductor element having circuits and semiconductor devices fabricated therein, and a plurality of electrical connectors, e.g., solder balls attached to contacts of the microelectronic element. The connectors can be surrounded by first, inner regions 200 of compressible dielectric material and second, outer regions of dielectric material. In one embodiment, an underfill can contact a face of the microelectronic element between respective connectors or second regions. The second regions can provide restraining force, such that during volume expansion of the connectors, the first regions can compress against the restraining force of the second regions.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: March 3, 2015
    Assignee: International Business Machines Corporation
    Inventors: Mukta G. Farooq, John A. Fitzsimmons
  • Publication number: 20150056804
    Abstract: According to one embodiment of the present invention, a method of plating a TSV hole in a substrate is provided. The TSV hole may include an open end terminating at a conductive pad, a stack of wiring levels, and a plurality of chip interconnects. The method of plating a TSV may include attaching a handler to the plurality of chip interconnects, the handler having a conductive layer in electrical contact with the plurality of chip interconnects; exposing a closed end of the TSV hole, including the conductive pad, to an electrolyte solution; and applying an electrical potential along an electrical path from the conductive layer to the conductive pad causing conductive material from the electrolyte solution to deposit on the conductive pad and within the TSV hole, the electrical path including the conductive layer, the plurality of chip interconnects, the stack of wiring levels and the conductive pad.
    Type: Application
    Filed: October 24, 2014
    Publication date: February 26, 2015
    Inventors: Mukta G. Farooq, John A. Fitzsimmons, Troy L. Graves-Abe
  • Patent number: 8956973
    Abstract: According to one embodiment of the present invention, a method of plating a TSV hole in a substrate is provided. The TSV hole may include an open end terminating at a conductive pad, a stack of wiring levels, and a plurality of chip interconnects. The method of plating a TSV may include attaching a handler to the plurality of chip interconnects, the handler having a conductive layer in electrical contact with the plurality of chip interconnects; exposing a closed end of the TSV hole, including the conductive pad, to an electrolyte solution; and applying an electrical potential along an electrical path from the conductive layer to the conductive pad causing conductive material from the electrolyte solution to deposit on the conductive pad and within the TSV hole, the electrical path including the conductive layer, the plurality of chip interconnects, the stack of wiring levels and the conductive pad.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: February 17, 2015
    Assignee: International Business Machines Corporation
    Inventors: Mukta G. Farooq, John A. Fitzsimmons, Troy L. Graves-Abe
  • Publication number: 20150021736
    Abstract: An electronic fuse structure having an Mx level including an Mx dielectric, a fuse line, an Mx cap dielectric above at least a portion of the Mx dielectric, and a modified portion of the Mx cap dielectric directly above at least a portion of the fuse line, where the modified portion of the Mx cap dielectric is chemically different from the remainder of the Mx cap dielectric, an Mx+1 level including an Mx+1 dielectric, a first Mx+1 metal, an Mx+1 cap dielectric above of the Mx+1 dielectric and the first Mx+1 metal, where the Mx+1 level is above the Mx level, and a first via electrically connecting the fuse line to the first Mx+1 metal.
    Type: Application
    Filed: October 7, 2014
    Publication date: January 22, 2015
    Inventors: Ronald G. Filippi, John A. Fitzsimmons, Erdem Kaltalioglu, Ping-Chuan Wang, Lijuan Zhang
  • Publication number: 20150024989
    Abstract: Cleaning solutions and processes for cleaning semiconductor devices or semiconductor tooling during manufacture thereof generally include contacting the semiconductor devices or semiconductor tooling with an acidic aqueous cleaning solution free of a fluorine containing compound, the acidic aqueous cleaning solution including at least one antioxidant and at least one non-oxidizing acid.
    Type: Application
    Filed: October 9, 2014
    Publication date: January 22, 2015
    Inventors: Vishal Chhabra, Laertis Economikos, John A. Fitzsimmons, James Hannah, Mahmoud Khojasteh, Jennifer Muncy
  • Publication number: 20140374903
    Abstract: The present invention provides a stabilized fine textured metal microstructure that constitutes a durable activated surface usable for bonding a 3D stacked chip. A fine-grain layer that resists self anneal enables metal to metal bonding at moderate time and temperature and wider process flexibility.
    Type: Application
    Filed: September 13, 2014
    Publication date: December 25, 2014
    Inventors: Tien-Jen Cheng, Mukta G. Farooq, John A. Fitzsimmons
  • Patent number: 8916448
    Abstract: The present invention provides a stabilized fine textured metal microstructure that constitutes a durable activated surface usable for bonding a 3D stacked chip. A fine-grain layer that resists self anneal enables metal to metal bonding at moderate time and temperature and wider process flexibility.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: December 23, 2014
    Assignee: International Business Machines Corporation
    Inventors: Tien-Jen Cheng, Mukta G. Farooq, John A. Fitzsimmons
  • Patent number: 8889491
    Abstract: An electronic fuse structure having an Mx level including an Mx dielectric, a fuse line, an Mx cap dielectric above at least a portion of the Mx dielectric, and a modified portion of the Mx cap dielectric directly above at least a portion of the fuse line, where the modified portion of the Mx cap dielectric is chemically different from the remainder of the Mx cap dielectric, an Mx+1 level including an Mx+1 dielectric, a first Mx+1 metal, an Mx+1 cap dielectric above of the Mx+1 dielectric and the first Mx+1 metal, where the Mx+1 level is above the Mx level, and a first via electrically connecting the fuse line to the first Mx+1 metal.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: November 18, 2014
    Assignee: International Business Machines Corporation
    Inventors: Ronald G. Filippi, John A. Fitzsimmons, Erdem Kaltalioglu, Ping-Chuan Wang, Lijuan Zhang
  • Publication number: 20140332929
    Abstract: Various embodiments include semiconductor structures. In one embodiment, the semiconductor structure includes a chip having a body having a polyhedron shape with a pair of opposing sides; and a solder member extending along a side that extends between the pair of opposing sides of the polyhedron shape.
    Type: Application
    Filed: May 9, 2014
    Publication date: November 13, 2014
    Applicant: International Business Machines Corporation
    Inventors: Kangguo Cheng, Timothy J. Dalton, Mukta G. Farooq, John A. Fitzsimmons, Louis L. Hsu
  • Publication number: 20140312265
    Abstract: A chemical solution that removes undesired metal hard mask yet remains selective to the device wiring metallurgy and dielectric materials. The present invention decreases aspect ratio by selective removal of the metal hard mask before the metallization of the receiving structures without adverse damage to any existing metal or dielectric materials required to define the semiconductor device, e.g. copper metallurgy or device dielectric. Thus, an improved aspect ratio for metal fill without introducing any excessive trapezoidal cross-sectional character to the defined metal receiving structures of the device will result.
    Type: Application
    Filed: July 3, 2014
    Publication date: October 23, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Shyng-Tsong Chen, John A. Fitzsimmons, David L. Rath, Muthumanickam Sankarapandian, Oscar van der Straten
  • Patent number: 8835326
    Abstract: A chemical solution that removes undesired metal hard mask yet remains selective to the device wiring metallurgy and dielectric materials. The present invention decreases aspect ratio by selective removal of the metal hard mask before the metallization of the receiving structures without adverse damage to any existing metal or dielectric materials required to define the semiconductor device, e.g. copper metallurgy or device dielectric. Thus, an improved aspect ratio for metal fill without introducing any excessive trapezoidal cross-sectional character to the defined metal receiving structures of the device will result.
    Type: Grant
    Filed: January 4, 2012
    Date of Patent: September 16, 2014
    Assignee: International Business Machines Corporation
    Inventors: John A. Fitzsimmons, Shyng-Tsong Chen, David L. Rath, Muthumanickam Sankarapandian, Oscar van der Straten
  • Patent number: 8835307
    Abstract: A method and a structure for reworking an antireflective coating (ARC) layer over a semiconductor substrate. The method includes providing a substrate having a material layer, forming a planarization layer on the material layer, forming an organic solvent soluble layer on the planarization layer, forming an ARC layer on the organic solvent soluble layer, forming a pattern in the ARC layer, and removing the organic solvent soluble layer and the ARC layer with an organic solvent while leaving the planarization layer unremoved. The structure includes a substrate having a material layer, a planarization layer on the material layer, an organic solvent soluble layer on the planarization layer, and an ARC layer on the organic solvent soluble layer.
    Type: Grant
    Filed: May 10, 2012
    Date of Patent: September 16, 2014
    Assignee: International Business Machines Corporation
    Inventors: Hakeem Akinmade-Yusuff, John A. Fitzsimmons, Ranee Wai-Ling Kwong
  • Patent number: 8802497
    Abstract: Systems and methods are disclosed that enable forming semiconductor chip connections. In one embodiment, the semiconductor chip includes a body having a polyhedron shape with a pair of opposing sides; and a solder member extending along a side that extends between the pair of opposing sides of the polyhedron shape.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: August 12, 2014
    Assignee: International Business Machines Corporation
    Inventors: Louis Lu-Chen Hsu, Kangguo Cheng, Timothy J. Dalton, Mukta G. Farooq, John A. Fitzsimmons
  • Patent number: 8796150
    Abstract: A method and structure for transferring a lithographic pattern into a substrate includes forming a dielectric hardmask layer over a dielectric substrate. A metal hardmask layer is formed over the dielectric hardmask layer. A protective capping hardmask layer or capping film is formed over the metal hardmask layer, and a lithographic structure for pattern transfer is formed over the capping layer. A pattern is transferred into the dielectric substrate using the defined lithographic structure. The capping hardmask layer can be removed during subsequent processing.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: August 5, 2014
    Assignee: International Business Machines Corporation
    Inventors: Hakeem B. S. Akinmade-Yusuff, Samuel Sung Shik Choi, Edward R. Engbrecht, John A. Fitzsimmons
  • Patent number: 8791005
    Abstract: A structure formed in an opening having a substantially vertical sidewall defined by a non-metallic material and having a substantially horizontal bottom defined by a conductive pad, the structure including a diffusion barrier covering the sidewall and a fill composed of conductive material.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: July 29, 2014
    Assignee: International Business Machines Corporation
    Inventors: Mukta G. Farooq, John A. Fitzsimmons, Troy L. Graves-Abe
  • Publication number: 20140191418
    Abstract: The present invention provides a stabilized fine textured metal microstructure that constitutes a durable activated surface usable for bonding a 3D stacked chip. A fine-grain layer that resists self anneal enables metal to metal bonding at moderate time and temperature and wider process flexibility.
    Type: Application
    Filed: January 9, 2013
    Publication date: July 10, 2014
    Applicant: International Business Machines Corporation
    Inventors: Tien-Jen Cheng, Mukta G. Farooq, John A. Fitzsimmons
  • Patent number: 8763445
    Abstract: Embodiments of the present invention relate to detecting leaks in a fluid cooling system. One aspect of the present invention concerns an apparatus for detecting leaks in a fluid cooling system that includes a pressure exerting device for applying a pressure on a supply hose and a return hose of the cooling system, and a pressure gauge coupled to the pressure exerting device for detecting a drop of fluid pressure in the cooling system while the pressure is applied. The drop of fluid pressure indicates that there may be a leak in the cooling system.
    Type: Grant
    Filed: December 7, 2011
    Date of Patent: July 1, 2014
    Assignee: International Business Machines Corporation
    Inventors: John A. Fitzsimmons, Thomas A. Kline, Patrick F. White
  • Publication number: 20140128307
    Abstract: Cleaning solutions and processes for cleaning semiconductor devices or semiconductor tooling during manufacture thereof generally include contacting the semiconductor devices or semiconductor tooling with an acidic aqueous cleaning solution free of a fluorine containing compound, the acidic aqueous cleaning solution including at least one antioxidant and at least one non-oxidizing acid.
    Type: Application
    Filed: November 6, 2012
    Publication date: May 8, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Vishal Chhabra, Laertis Economikos, John A. Fitzsimmons, James Hannah, Mahmoud Khojasteh, Jennifer Muncy
  • Patent number: 8647445
    Abstract: Cleaning processes for cleaning semiconductor devices or semiconductor tooling during manufacture thereof generally include contacting the semiconductor devices or semiconductor tooling with an antioxidant to form an insoluble adduct followed by solubilizing the adduct with a basic aqueous cleaning solution.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: February 11, 2014
    Assignee: International Business Machines Corporation
    Inventors: Vishal Chhabra, John A. Fitzsimmons, Mahmoud Khojasteh, Jennifer Muncy
  • Publication number: 20140027912
    Abstract: A structure formed in an opening having a substantially vertical sidewall defined by a non-metallic material and having a substantially horizontal bottom defined by a conductive pad, the structure including a diffusion barrier covering the sidewall and a fill composed of conductive material.
    Type: Application
    Filed: October 1, 2013
    Publication date: January 30, 2014
    Applicant: International Business Machines Corporation
    Inventors: Mukta G. Farooq, John A. Fitzsimmons, Troy L. Graves-Abe