Patents by Inventor Roy Yu

Roy Yu 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: 20050056942
    Abstract: A method is described for forming an integrated structure, including a semiconductor device and connectors for connecting to a motherboard. A first layer is formed on a plate transparent to ablating radiation, and a second layer on the semiconductor device. The first layer has a first set of conductors connecting to bonding pads, which are spaced with a first spacing distance in accordance with a required spacing of connections to the motherboard. The second layer has a second set of conductors connecting to the semiconductor device. The first layer and second layer are connected using a stud/via connectors having spacing less than that of the bonding pads. The semiconductor device is thus attached to the first layer, and the first set and second set of conductors are connected through the studs. The interface between the first layer and the plate is ablated by ablating radiation transmitted through the plate, thereby detaching the plate. The connector structures are then attached to the bonding pads.
    Type: Application
    Filed: September 15, 2003
    Publication date: March 17, 2005
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: H. Pogge, Chandrika Prasad, Roy Yu
  • Patent number: 6864165
    Abstract: A method is described for forming an integrated structure, including a semiconductor device and connectors for connecting to a motherboard. A first layer is formed on a plate transparent to ablating radiation, and a second layer on the semiconductor device. The first layer has a first set of conductors connecting to bonding pads, which are spaced with a first spacing distance in accordance with a required spacing of connections to the motherboard. The second layer has a second set of conductors connecting to the semiconductor device. The first layer and second layer are connected using a stud/via connectors having spacing less than that of the bonding pads. The semiconductor device is thus attached to the first layer, and the first set and second set of conductors are connected through the studs. The interface between the first layer and the plate is ablated by ablating radiation transmitted through the plate, thereby detaching the plate. The connector structures are then attached to the bonding pads.
    Type: Grant
    Filed: September 15, 2003
    Date of Patent: March 8, 2005
    Assignee: International Business Machines Corporation
    Inventors: H. Bernhard Pogge, Chandrika Prasad, Roy Yu
  • Patent number: 6856025
    Abstract: A process is described for semiconductor device integration at chip level or wafer level, in which vertical connections are formed through a substrate. A metallized feature is formed in the top surface of a substrate, and a handling plate is attached to the substrate. The substrate is then thinned at the bottom surface thereof to expose the bottom of the feature, to form a conducting through-via. The substrate may comprise a chip having a device (e.g. DRAM) fabricated therein. The process therefore permits vertical integration with a second chip (e.g. a PE chip). The plate may be a wafer attached to the substrate using a vertical stud/via interconnection. The substrate and plate may each have devices fabricated therein, so that the process provides vertical wafer-level integration of the devices.
    Type: Grant
    Filed: June 19, 2003
    Date of Patent: February 15, 2005
    Assignee: International Business Machines Corporation
    Inventors: H. Bernhard Pogge, Roy Yu, Chandrika Prasad, Chandrasekhar Narayan
  • Patent number: 6835589
    Abstract: A vertically integrated structure includes a micro-electromechanical system (MEMS) and a chip for delivering signals to the MEMS. The MEMS has an anchor portion having a conductor therethrough, by which it is connected to a substrate. The chip is attached to the MEMS substrate in a direction normal to the substrate surface, so as to make a conductive path from the chip to the MEMS. The chip may be attached by bonding the conductor to C4 metal pads formed on the chip, or by bonding the conductor to metal studs on the chip. The MEMS substrate may be thinned before attachment to the chip, or may be removed from the underside of the MEMS. A temporary carrier plate is used to facilitate handling of the MEMS and alignment to the chip.
    Type: Grant
    Filed: November 14, 2002
    Date of Patent: December 28, 2004
    Assignee: International Business Machines Corporation
    Inventors: H. Bernhard Pogge, Michel Despont, Ute Drechsler, Chandrika Prasad, Peter Vettiger, Roy Yu
  • Publication number: 20040097002
    Abstract: A vertically integrated structure includes a micro-electromechanical system (MEMS) and a chip for delivering signals to the MEMS. The MEMS has an anchor portion having a conductor therethrough, by which it is connected to a substrate. The chip is attached to the MEMS substrate in a direction normal to the substrate surface, so as to make a conductive path from the chip to the MEMS. The chip may be attached by bonding the conductor to C4 metal pads formed on the chip, or by bonding the conductor to metal studs on the chip. The MEMS substrate may be thinned before attachment to the chip, or may be removed from the underside of the MEMS. A temporary carrier plate is used to facilitate handling of the MEMS and alignment to the chip.
    Type: Application
    Filed: November 14, 2002
    Publication date: May 20, 2004
    Applicant: International Business Machines Corporation
    Inventors: H. Bernhard Pogge, Michel Despont, Ute Drechsler, Chandrika Prasad, Peter Vettiger, Roy Yu
  • Publication number: 20040097078
    Abstract: A thin film transfer join process in which a multilevel thin film structure is formed on a carrier, the multilevel thin film structure is joined to a final substrate and then the carrier is removed. Once the carrier is removed, the dielectric material and metallic material that were once joined to the carrier are now exposed. The dielectric material is then etched back so that the exposed metallic material protrudes beyond the dielectric material. Also disclosed is a module made by the foregoing process.
    Type: Application
    Filed: November 19, 2002
    Publication date: May 20, 2004
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Jeffrey B. Danielson, Balaram Ghosal, James Kuss, Matthew Wayne Oonk, Chandrika Prasad, Eric Daniel Perfecto, Roy Yu
  • Publication number: 20040097004
    Abstract: A vertically integrated structure includes a micro-electromechanical system (MEMS) and a chip for delivering signals to the MEMS. The structure includes a metal stud connecting a surface of the chip and the MEMS; the MEMS has an anchor portion having a conducting pad on an underside thereof contacting the metal stud. The MEMS is spaced from the chip by a distance corresponding to a height of the metal stud, and the MEMS includes a doped region in contact with the conducting pad. In particular, the MEMS may include a cantilever structure, with the end portion including a tip extending in the vertical direction. A support structure (e.g. of polyimide) may surround the metal stud and contact both the underside of the MEMS and the surface of the chip. A temporary carrier plate is used to facilitate handling of the MEMS and alignment to the chip.
    Type: Application
    Filed: May 28, 2003
    Publication date: May 20, 2004
    Applicant: International Business Machine Corporation
    Inventors: H. Bernhard Pogge, Michel Despont, Ute Drechsler, Peter Vettiger, Roy Yu
  • Patent number: 6737297
    Abstract: A semiconductor device structure including fine-pitch connections between chips is fabricated using stud/via matching structures. The stud and via are aligned and connected, thereby permitting fine-pitch chip placement and electrical interconnections. A chip support is then attached to the device. A temporary chip alignment structure includes a transparent plate exposed to ablating radiation; the plate is then detached and removed. This method permits interconnection of multiple chips (generally with different sizes, architectures and functions) at close proximity and with very high wiring density. The device may include passive components located on separate chips, so that the device includes chips with and without active devices.
    Type: Grant
    Filed: August 6, 2002
    Date of Patent: May 18, 2004
    Assignee: International Business Machines Corporation
    Inventors: H. Bernhard Pogge, Chandrika Prasad, Roy Yu
  • Patent number: 6678949
    Abstract: A structure for mounting electronic devices. The structure uses a non-conductive, compliant spacer interposed between an underlying carrier and an overlying thin film. The spacer includes a pattern of through-vias which matches opposing interconnects on opposing surfaces of the carrier and the thin film. In this way, solder connections can extend in the through-vias to electrically connect the thin film to the carrier and smooth out topography. In a related process for forming the structure, the thin film is built on a first sacrificial carrier and then further processed on a second sacrificial carrier to keep it from distorting, expanding, or otherwise suffering adversely during its processing. The solder connections between the thin film and the carrier are formed using a closed solder joining process. The spacer is used with laminate cards to create thermal stress release structures on portions of the cards carrying a thin film.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: January 20, 2004
    Assignee: International Business Machines Corporation
    Inventors: Chandrika Prasad, Roy Yu, Richard L. Canull, Giulio DiGiacomo, Ajay P. Giri, Lewis S. Goldmann, Kimberley A. Kelly, Bouwe W. Leenstra, Voya R. Markovich, Eric D. Perfecto, Sampath Purushothaman, Joseph M. Sullivan
  • Patent number: 6669833
    Abstract: A process and apparatus are provided for electroplating a film onto a substrate having a top side including a plating surface includes the following steps. Provide a plating tank with an electroplating bath. Provide an anode in the bath. Place a substrate having a plating surface to be electroplated into the electroplating bath connecting surfaces to be plated to a first cathode. Support a second cathode including a portion thereof with openings therethrough extending across the plating surface of the substrate and positioned between the substrate and the anode. Connect power to provide a negative voltage to the first cathode and provide a negative voltage to the second cathode, and provide a positive voltage to the anode.
    Type: Grant
    Filed: April 2, 2003
    Date of Patent: December 30, 2003
    Assignee: International Business Machines Corporation
    Inventors: Suryanarayana Kaja, Chandrika Prasad, RongQing Roy Yu
  • Publication number: 20030215984
    Abstract: A process is described for semiconductor device integration at chip level or wafer level, in which vertical connections are formed through a substrate. A metallized feature is formed in the top surface of a substrate, and a handling plate is attached to the substrate. The substrate is then thinned at the bottom surface thereof to expose the bottom of the feature, to form a conducting through-via. The substrate may comprise a chip having a device (e.g. DRAM) fabricated therein. The process therefore permits vertical integration with a second chip (e.g. a PE chip). The plate may be a wafer attached to the substrate using a vertical stud/via interconnection. The substrate and plate may each have devices fabricated therein, so that the process provides vertical wafer-level integration of the devices.
    Type: Application
    Filed: June 19, 2003
    Publication date: November 20, 2003
    Inventors: H. Bernhard Pogge, Roy Yu, Chandrika Prasad, Chandrasekhar Narayan
  • Patent number: 6640021
    Abstract: A process is described for integrating an optoelectronic chip and a driver chip on a substrate, in which a waveguide is built into the substrate and the chips are joined to the substrate using a stud/via alignment technique. The waveguide structure includes a reflector and a channel for transmitting light emitted by the optoelectronic chip. A stud formed on the substrate is aligned to a via formed in a layer on the chip, aligning the chip so that the light reaches the reflector and enters the waveguide. A driver chip may be mounted on the substrate in close proximity to the optoelectronic chip.
    Type: Grant
    Filed: December 11, 2001
    Date of Patent: October 28, 2003
    Assignee: International Business Machines Corporation
    Inventors: H. Bernhard Pogge, Roy Yu, Chandrika Prasad
  • Publication number: 20030168340
    Abstract: A process and apparatus are provided for electroplating a film onto a substrate having a top side including a plating surface includes the following steps. Provide a plating tank with an electroplating bath. Provide an anode in the bath. Place a substrate having a plating surface to be electroplated into the electroplating bath connecting surfaces to be plated to a first cathode. Support a second cathode including a portion thereof with openings therethrough extending across the plating surface of the substrate and positioned between the substrate and the anode. Connect power to provide a negative voltage to the first cathode and provide a negative voltage to the second cathode, and provide a positive voltage to the anode.
    Type: Application
    Filed: April 2, 2003
    Publication date: September 11, 2003
    Inventors: Suryanarayana Kaja, Chandrika Prasad, RongQing Roy Yu
  • Patent number: 6600224
    Abstract: An electronic interconnection assembly having a thin film bonded to either a glass ceramic or to an organic laminate substrate, and a method for attaching a thin film wiring package to the substrate. Provided is the utilization of adhesives which may be processed at significantly lower temperatures so as to avoid damaging components, the wiring package and interconnection joints. Moreover, pursuant to specific aspects, the joining of the thin film to the substrate may be implemented with the utilization of dendrites.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: July 29, 2003
    Assignee: International Business Machines Corporation
    Inventors: Donald S. Farquhar, Raymond T. Galasco, Sung Kwon Kang, Mark D. Poliks, Chandrika Prasad, Roy Yu
  • Patent number: 6599778
    Abstract: A process is described for semiconductor device integration at chip level or wafer level, in which vertical connections are formed through a substrate. A metallized feature is formed in the top surface of a substrate, and a handling plate is attached to the substrate. The substrate is then thinned at the bottom surface thereof to expose the bottom of the feature, to form a conducting through-via. The substrate may comprise a chip having a device (e.g. DRAM) fabricated therein. The process therefore permits vertical integration with a second chip (e.g. a PE chip). The plate may be a wafer attached to the substrate using a vertical stud/via interconnection. The substrate and plate may each have devices fabricated therein, so that the process provides vertical wafer-level integration of the devices.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: July 29, 2003
    Assignee: International Business Machines Corporation
    Inventors: H. Bernhard Pogge, Roy Yu, Chandrika Prasad, Chandrasekhar Narayan
  • Publication number: 20030111733
    Abstract: A process is described for semiconductor device integration at chip level or wafer level, in which vertical connections are formed through a substrate. A metallized feature is formed in the top surface of a substrate, and a handling plate is attached to the substrate. The substrate is then thinned at the bottom surface thereof to expose the bottom of the feature, to form a conducting through-via. The substrate may comprise a chip having a device (e.g. DRAM) fabricated therein. The process therefore permits vertical integration with a second chip (e.g. a PE chip). The plate may be a wafer attached to the substrate using a vertical stud/via interconnection. The substrate and plate may each have devices fabricated therein, so that the process provides vertical wafer-level integration of the devices.
    Type: Application
    Filed: December 19, 2001
    Publication date: June 19, 2003
    Applicant: International Business Machines Corporation
    Inventors: H. Bernhard Pogge, Roy Yu, Chandrika Prasad, Chandrasekhar Narayan
  • Publication number: 20030108269
    Abstract: A process is described for integrating an optoelectronic chip and a driver chip on a substrate, in which a waveguide is built into the substrate and the chips are joined to the substrate using a stud/via alignment technique. The waveguide structure includes a reflector and a channel for transmitting light emitted by the optoelectronic chip. A stud formed on the substrate is aligned to a via formed in a layer on the chip, aligning the chip so that the light reaches the reflector and enters the waveguide. A driver chip may be mounted on the substrate in close proximity to the optoelectronic chip.
    Type: Application
    Filed: December 11, 2001
    Publication date: June 12, 2003
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: H. Bernhard Pogge, Roy Yu, Chandrika Prasad
  • Publication number: 20030015788
    Abstract: A semiconductor device structure including fine-pitch connections between chips is fabricated using stud/via matching structures. The stud and via are aligned and connected, thereby permitting fine-pitch chip placement and electrical interconnections. A chip support is then attached to the device. A temporary chip alignment structure includes a transparent plate exposed to ablating radiation; the plate is then detached and removed. This method permits interconnection of multiple chips (generally with different sizes, architectures and functions) at close proximity and with very high wiring density. The device may include passive components located on separate chips, so that the device includes chips with and without active devices.
    Type: Application
    Filed: August 6, 2002
    Publication date: January 23, 2003
    Applicant: International Business Machines Corporation
    Inventors: H. Bernhard Pogge, Chandrika Prasad, Roy Yu
  • Patent number: 6455331
    Abstract: A device repair process that includes removing a passivation polyimide layer. The passivation polyimide layer is removed using a first-half ash followed by a second-half ash. The device is rotated during the second-half ash. The device is then cleaned using sodium hydroxide (NaOH) and a subsequent light ash step is implemented. After the passivation polyimide layer is removed, a seed layer is deposited on the device. A photoresist is formed on the seed layer and bond sites are formed in the photoresist. Repair metallurgy is plated through the bond sites. The bond sites are plated by coupling the device to a fixture and applying the current for plating to the fixture. The contact between the device and the fixture is made though bottom surface metallurgy. After plating, the residual seed layer is removed and a laser delete process is implemented to disconnect and isolate the nets of the device.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: September 24, 2002
    Assignee: International Business Machines Corporation
    Inventors: Roy Yu, Kamalesh S. Desai, Peter A. Franklin, Suryanarayana Kaja, Kimberley A. Kelly, Yeeling L. Lee, Arthur G. Merryman, Frank R. Morelli, Thomas A. Wassick
  • Patent number: 6448169
    Abstract: An apparatus for use in manufacturing a semiconductor device includes an input-output (IO) face having a plurality of IO lands, and is situated in an operating position in abutting relation with a depositor. The apparatus includes a first holding member holding the depositor in a first position; a second holding member holding the semiconductor device in the operating position. The depositor and the semiconductor device cooperate in the operating position to deposit solder ball connection structures to the IO lands. The apparatus further includes a separating member for moving at least one of the depositor and the semiconductor device from the operating position to an interim orientation. The interim orientation establishes a separation distance intermediate the depositor and the semiconductor device appropriate to disengage the solder ball connecting structures from the depositor.
    Type: Grant
    Filed: December 21, 1995
    Date of Patent: September 10, 2002
    Assignee: International Business Machines Corporation
    Inventors: William Brearley, Laertis Economikos, Paul F. Findeis, Kimberley A. Kelly, Bouwe W. Leenstra, Arthur Gilman Merryman, Eric Daniel Perfecto, Chandrika Prasad, James Patrick Wood, Roy Yu