Patents by Inventor David Roper

David Roper 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: 20060135485
    Abstract: A composition comprising a potassium salt of N?-hydroxy-N-cyclohexyldiazenium oxide (KHDO) and a diluent is useful for killing fungi. Such a composition but which additionally includes at least one of certain other fungicidally active components is useful for combating microorganisms in general. Such other fungicidally active component is selected from: alcohols, isothiazolones, activated halogen compounds, formaldehyde release compounds, phenolic compounds, aldehydes, acids and esters, biphenyls, urea derivatives, O-acetals, O-formals, N-acetals, N-formals, benzamidines, phthalimides, pyridine derivatives, quaternary ammonium and phosphonium compounds, amines, amphoteric compounds, dithiocarbamates, compounds containing active oxygen and mixtures of any of these.
    Type: Application
    Filed: September 25, 2003
    Publication date: June 22, 2006
    Inventors: David Ashworth, Jurgen Huff, Mohammed Qureshi, David Roper, Lawrence Staniforth, Dieter Zeller, Walter Guthrie
  • Publication number: 20060118936
    Abstract: One or more capacitors are mounted within the lateral extent of a module having one or more integrated circuits. Other components may be similarly mounted. In one embodiment, multiple ICs are stacked and interconnected with flexible circuits to form a high-density module. Surface-mount capacitors may be mounted to the flexible circuits. In other embodiments, capacitors are placed at least partially within cutout spaces formed in the flexible circuits. Preferred embodiments have flex circuits with two conducive layers. Module contacts may be used to connect the module to its operating environment.
    Type: Application
    Filed: December 3, 2004
    Publication date: June 8, 2006
    Inventors: Russell Rapport, David Roper
  • Publication number: 20060091521
    Abstract: The present invention stacks integrated circuits into modules that conserve board surface area. In a two-high stack or module devised in accordance with a preferred embodiment of the present invention, a pair of integrated circuits is stacked, with one integrated circuit above the other. The two integrated circuits are connected with a pair of flexible circuit structures. Each of the pair of flexible circuit structures is partially wrapped about a respective opposite lateral edge of the lower integrated circuit of the module. The flex circuit pair connects the upper and lower integrated circuits and provides a thermal and electrical path connection path between the module and an application environment such as a printed wiring board (PWB). The present invention may be employed to advantage in numerous configurations and combinations of integrated circuits in modules provided for high-density memories or high capacity computing.
    Type: Application
    Filed: December 21, 2005
    Publication date: May 4, 2006
    Inventors: James Cady, James Wilder, David Roper, James Wehrly, Julian Dowden, Jeff Buchle
  • Publication number: 20060092614
    Abstract: The present invention stacks integrated circuit packages into circuit modules. In a preferred embodiment, solder paste and primary adhesive respectively are applied to selected locations on the flex circuitry. Supplemental adhesive is applied to add ional locations on the flex circuitry, CSP, or other component. The flex circuitry and the CSP are brought into proximity with each other. During solder reflow operation, a force is applied and the CSP collapses toward the flex circuitry, displacing the primary adhesive and the supplemental adhesive. The supplemental adhesive establishes a bond providing additional support to the flex circuitry. In another embodiment, CSPs or other integrated circuit packages are bonded to each other or to other components with a combination of adhesives. A rapid bond adhesive maintains alignment of the bonded packages and/or components during assembly, and a structural bond adhesive provides additional strength and/or structural integrity to the bond.
    Type: Application
    Filed: October 31, 2005
    Publication date: May 4, 2006
    Inventors: Julian Partridge, James Wehrly, David Roper, Joseph Villani
  • Patent number: 7033861
    Abstract: A combination composed from a form standard and a CSP is attached to flex circuitry. Solder paste is applied to first selected locations on the flex circuitry and adhesive is applied to second selected locations on the flex circuitry. The flex circuitry and the combination of the form standard and CSP are brought into proximity with each other. During solder reflow operation, a force is applied that tends to bring the combination and flex circuitry closer together. As the heat of solder reflow melts the contacts of the CSP, the combination collapses toward the flex circuitry displacing the adhesive as the solder paste and contacts merge into solder joints. In a preferred embodiment, the form standard will be devised of heat transference material, a metal, for example, such as copper would be preferred, to improve thermal performance. In other embodiments, the methods of the invention may be used to attach a CSP without a form standard to flex circuitry.
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: April 25, 2006
    Assignee: Staktek Group L.P.
    Inventors: Julian Partridge, James Douglas Wehrly, Jr., David Roper
  • Publication number: 20060008945
    Abstract: The present invention stacks integrated circuits (ICs) into modules that conserve PWB or other board surface area. In another aspect, the invention provides a lower capacitance memory expansion addressing system and method and preferably with the CSP stacked modules provided herein. In a preferred embodiment in accordance with the invention, a form standard provides a physical form that allows many of the varying package sizes found in the broad family of CSP packages to be used to advantage while employing a standard connective flex circuitry design. In a preferred embodiment, the form standard will be devised of heat transference material such as copper to improve thermal performance. In an alternative embodiment, the form standard may include a heat spreader portion with mounting feet. In a preferred embodiment of the memory addressing system, a high speed switching system selects a data line associated with each level of a stacked module to reduce the loading effect upon data signals in memory access.
    Type: Application
    Filed: September 7, 2005
    Publication date: January 12, 2006
    Inventors: James Cady, James Wilder, David Roper, James Wehrly
  • Publication number: 20050280135
    Abstract: The present invention stacks chip scale-packaged integrated circuits (CSPs) into modules that conserve PWB or other board surface area. In a two-high CSP stack or module devised in accordance with a preferred embodiment of the present invention, two CSPs are stacked, with one CSP disposed above the other. The two CSPs are connected with flex circuitry. A form standard is disposed between the flex circuitry and a CSP in the stack. The form standard can take many configurations and may be used where flex circuits are used to connect CSPs to one another in stacked modules having two or more constituent CSPs. For example, in stacked modules that include four CSPs, three form standards are employed in preferred embodiments, although fewer may be used. The form standard provides a thermally conductive physical form that allows many of the varying package sizes found in the broad family of CSP packages to be used to advantage while employing a standard connective flex circuitry design.
    Type: Application
    Filed: August 4, 2005
    Publication date: December 22, 2005
    Inventors: Russell Rapport, James Cady, James Wilder, David Roper, James Wehrly, Jeff Buchle, Julian Dowden
  • Publication number: 20050263872
    Abstract: A form standard provides a physical form that allows many of the varying package sizes found in the broad family of CSP packages to be used to advantage while employing a standard connective flex circuitry design that is disposed about the form. In a preferred embodiment, the form standard will be devised of heat transference material such as copper to improve thermal performance.
    Type: Application
    Filed: July 1, 2005
    Publication date: December 1, 2005
    Inventors: James Cady, James Wilder, David Roper, James Wehrly
  • Publication number: 20050146011
    Abstract: The present invention stacks integrated circuits into modules that conserve board surface area. In a two-high stack or module devised in accordance with a preferred embodiment of the present invention, a pair of integrated circuits is stacked, with one integrated circuit above the other. The two integrated circuits are connected with a pair of flexible circuit structures. Each of the pair of flexible circuit structures is partially wrapped about a respective opposite lateral edge of the lower integrated circuit of the module. The flex circuit pair connects the upper and lower integrated circuits and provides a thermal and electrical path connection path between the module and its application environment. The module has a bailout pattern with a different pitch and/or supplemental module contacts devised to allow combined signaling to the integrated circuits through contacts having a desired bailout footprint.
    Type: Application
    Filed: March 8, 2005
    Publication date: July 7, 2005
    Inventors: David Roper, James Cady, James Wilder, James Wehrly, Jeff Buchle, Julian Dowden
  • Publication number: 20050146031
    Abstract: The present invention provides a system and method that mounts integrated circuit devices onto substrates and a system and method for employing the method in stacked modules. The contact pads of a packaged integrated circuit device are substantially exposed. A solder paste that includes higher temperature solder paste alloy is applied to a substrate or to the integrated circuit device to be mounted. The integrated circuit device is positioned to contact the contacts of the substrate. Heat is applied to create high temperature joints between the contacts of the substrate and the integrated circuit device resulting in a device-substrate assembly with high temperature joints. The formed joints are less subject to re-melting in subsequent processing steps. The method may be employed in devising stacked module constructions such as those disclosed herein as preferred embodiments in accordance with the invention. Typically, the created joints are low in profile.
    Type: Application
    Filed: December 14, 2004
    Publication date: July 7, 2005
    Inventors: Julian Partridge, James Cady, James Wilder, David Roper, James Wehrly
  • Publication number: 20050067683
    Abstract: The present invention stacks chip scale-packaged integrated circuits (CSPs) into modules that conserve PWB or other board surface area. In another aspect, the invention provides a lower capacitance memory expansion addressing system and method and preferably with the CSP stacked modules provided herein. In a preferred embodiment in accordance with the invention, a form standard is disposed between the flex circuitry and the IC package over which a portion of the flex circuitry is laid. The form standard provides a physical form that allows many of the varying package sizes found in the broad family of CSP packages to be used to advantage while employing a standard connective flex circuitry design. In a preferred embodiment, the form standard will be devised of heat transference material such as copper to improve thermal performance.
    Type: Application
    Filed: October 29, 2004
    Publication date: March 31, 2005
    Inventors: Russell Rapport, James Cady, James Wilder, David Roper, James Wehrly, Jeff Buchle
  • Publication number: 20050062144
    Abstract: The present invention stacks chip scale-packaged integrated circuits (CSPs) into modules that conserve PWB or other board surface area. In another aspect, the invention provides a lower capacitance memory expansion addressing system and method and preferably with the CSP stacked modules provided herein. In a preferred embodiment in accordance with the invention, a form standard is disposed between the flex circuitry and the IC package over which a portion of the flex circuitry is laid. The form standard provides a physical form that allows many of the varying package sizes found in the broad family of CSP packages to be used to advantage while employing a standard connective flex circuitry design. In a preferred embodiment, the form standard will be devised of heat transference material such as copper to improve thermal performance.
    Type: Application
    Filed: October 12, 2004
    Publication date: March 24, 2005
    Inventors: Russell Rapport, James Cady, James Wilder, David Roper, James Wehrly, Jeff Buchle
  • Publication number: 20050056921
    Abstract: The present invention stacks chip scale-packaged integrated circuits (CSPs) into modules that conserve PWB or other board surface area. The CSPs employed in stacked modules devised in accordance with the present invention are connected with flex circuitry. That flex circuitry may exhibit one or more conductive layers with preferred embodiments having two conductive layers. A form standard is disposed along the lower planar surface and extends laterally beyond the package of one or more CSPs in a stacked module. The form standard provides a physical form that allows many of the varying package sizes found in the broad family of CSP packages to be used to advantage while employing a standard connective flex circuitry design. In a preferred embodiment, the form standard will be comprised of heat conductive material such as copper, for example.
    Type: Application
    Filed: May 13, 2004
    Publication date: March 17, 2005
    Inventors: James Wehrly, James Cady, Julian Partridge, David Roper
  • Publication number: 20050057911
    Abstract: The present invention stacks integrated circuits (ICs) into modules that conserve PWB or other board surface area. In another aspect, the invention provides a lower capacitance memory expansion addressing system and method and preferably with the CSP stacked modules provided herein. In a preferred embodiment in accordance with the invention, a form standard provides a physical form that allows many of the varying package sizes found in the broad family of CSP packages to be used to advantage while employing a standard connective flex circuitry design. In a preferred embodiment, the form standard will be devised of heat transference material such as copper to improve thermal performance. In a preferred embodiment of the memory addressing system, a high speed switching system selects a data line associated with each level of a stacked module to reduce the loading effect upon data signals in memory access.
    Type: Application
    Filed: March 19, 2004
    Publication date: March 17, 2005
    Inventors: Russell Rapport, James Cady, James Wilder, David Roper, James Wehrly, Jeff Buchle
  • Publication number: 20050041403
    Abstract: The present invention stacks packaged integrated circuits into modules that conserve PWB or other board surface area. The present invention can be used to advantage with packages of a variety of sizes and configurations ranging from larger packaged base elements having many dozens of contacts to smaller packages such as, for example, die-sized packages such as DSBGA. In a preferred embodiment devised in accordance with the present invention, a base element CSP integrated circuit and a support element CSP integrated circuit are aggregated through a flex circuit having at least two conductive layers that are patterned to selectively connect the two CSP elements. A portion of the flex circuit connected to the support element is folded over the base element to dispose the support element above the base element while reducing the overall footprint. The flex circuit provides a thermal and electrical connection path between the module and an application environment such as a printed wiring board (PWB).
    Type: Application
    Filed: October 5, 2004
    Publication date: February 24, 2005
    Inventors: James Cady, James Wilder, David Roper, Russell Rapport, James Wehrly, Jeffrey Buchle
  • Publication number: 20050041404
    Abstract: The present invention stacks packaged integrated circuits into modules that conserve PWB or other board surface area. The invention provides techniques and structures for aggregating chip scale-packaged integrated circuits (CSPs) or leaded packages with other CSPs or with monolithic or stacked leaded packages into modules that conserve PWB or other board surface area. The present invention can be used to advantage with packages of a variety of sizes and configurations ranging from larger packaged base elements having many dozens of contacts to smaller packages such as, for example, die-sized packages such as DSBGA. In a preferred embodiment devised in accordance with the present invention, a base element CSP and a support element CSP are aggregated through a flex circuit having at least two conductive layers that are patterned to selectively connect the two CSP elements.
    Type: Application
    Filed: October 5, 2004
    Publication date: February 24, 2005
    Inventors: James Cady, James Wilder, David Roper, Russell Rapport, James Wehrly, Jeffrey Buchle
  • Publication number: 20050041402
    Abstract: The present invention stacks packaged integrated circuits into modules that conserve PWB or other board surface area. The present invention can be used to advantage with packages of a variety of sizes and configurations ranging from larger packaged base elements having many dozens of contacts to smaller packages such as, for example, die-sized packages such as DSBGA. In a preferred embodiment devised in accordance with the present invention, a base element CSP integrated circuit and a support element CSP integrated circuit are aggregated through a flex circuit having at least two conductive layers that are patterned to selectively connect the two CSP elements. A portion of the flex circuit connected to the support element is folded over the base element to dispose the support element above the base element while reducing the overall footprint. The flex circuit provides a thermal and electrical connection path between the module and an application environment such as a printed wiring board (PWB).
    Type: Application
    Filed: October 5, 2004
    Publication date: February 24, 2005
    Inventors: James Cady, James Wilder, David Roper, Russell Rapport, James Wehrly, Jeffrey Buchle
  • Publication number: 20050018412
    Abstract: The present invention stacks integrated circuits into modules that conserve board surface area. In a two-high stack or module devised in accordance with a preferred embodiment of the present invention, a pair of integrated circuits is stacked, with one integrated circuit above the other. The two integrated circuits are connected with a pair of flexible circuit structures. Each of the pair of flexible circuit structures is partially wrapped about a respective opposite lateral edge of the lower integrated circuit of the module. The flex circuit pair connects the upper and lower integrated circuits and provides a thermal and electrical path connection path between the module and its application environment. The module has a ballout pattern with a different pitch and/or supplemental module contacts devised to allow combined signaling to the integrated circuits through contacts having a desired ballout footprint.
    Type: Application
    Filed: August 9, 2004
    Publication date: January 27, 2005
    Inventors: David Roper, James Cady, James Wilder, James Wehrly, Jeff Buchle, Julian Dowden
  • Publication number: 20050009234
    Abstract: The present invention stacks chip scale-packaged integrated circuits (CSPs) into modules that conserve PWB or other board surface area. Multiple numbers of CSPs may be stacked in accordance with the present invention. The CSPs employed in stacked modules devised in accordance with the present invention are connected with flex circuitry. A form standard is disposed along a planar surface of a CSP. The form standard provides a physical form that allows many of the varying package sizes found in the broad family of CSP packages to be used to advantage while employing a standard connective flex circuitry design. The form standard achieves a reduced profile after the CSP has been attached to the form standard. In addition, in constructing modules in accordance with some preferred modes of the invention, CSP contacts are reduced in height to create lower profile modules. Thus, low profile embodiments of the modules of the present invention are devised.
    Type: Application
    Filed: August 6, 2004
    Publication date: January 13, 2005
    Inventors: Julian Partridge, James Wehrly, Julian Dowden, David Roper, James Cady
  • Publication number: 20030203663
    Abstract: The present invention provides a flexible circuit connector for electrically coupling IC devices to one another in a stacked configuration. Each IC device includes: (1) a package having top, bottom, and peripheral sides; and (2) external leads that extend out from at least one of the peripheral sides. In one embodiment, the flexible circuit connector comprises a plurality of discrete conductors that are adapted to be mounted between the upper side of a first package and the lower side of a second package. The flexible circuit connector also includes distal ends that extend from the conductors. The distal ends are adapted to be electrically connected to external leads from the first and second packages to interconnect with one another predetermined, separate groups of the external leads. In this manner, individual devices within a stack module can be individually accessed from traces on a circuit card.
    Type: Application
    Filed: May 30, 2003
    Publication date: October 30, 2003
    Inventors: Carmen D. Burns, David Roper, James W. Cady