Patents by Inventor Xuejun Fan

Xuejun Fan 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: 20070085173
    Abstract: A method and apparatus for providing double-sided cooling of leadframe-based wire-bonded electronic packages. The method includes the steps of: positioning a plurality of heatslug members (140) over a corresponding plurality of electronic packages (100?) formed on a leadframe strip (142), wherein each of the heatslug members includes a heatslug (130) and a plurality of legs (144) for supporting the heatslug over a respective one of the electronic packages; introducing a molding compound (132) between each heatslug member and its respective electronic package; curing the molding compound; and cutting the heatslug members and separating the electronic packages (100) from the leadframe strip, such that each electronic package includes a heatslug for cooling a first side of the electronic package.
    Type: Application
    Filed: October 14, 2004
    Publication date: April 19, 2007
    Inventor: Xuejun Fan
  • Publication number: 20060124167
    Abstract: A solar power system includes an enclosure (230) for a power converter (120) that can be mounted adjacent to the solar panel (110), wherein the enclosure (230) is configured to allow a substantial air space (240) between the solar panel (110) and the power converter (120). The surface (232) of the enclosure (230) that is exposed to the solar energy comprises highly solar-irradiation-resistant material, to minimize the solar heating of the power converter (120), and vents (231) are provided in the enclosure (230) to facilitate airflow through the air space (240). Preferably, a thermal efficient housing (250) is provided to contain the power converter (120), to facilitate the transfer of heat from the power converter (120) to the air space (240). The housing (250) may also be configured to be weather-tight, to protect the components of the power converter (120).
    Type: Application
    Filed: December 13, 2005
    Publication date: June 15, 2006
    Inventors: Xuejun Fan, Jeff Lord, William Keith
  • Patent number: 6853944
    Abstract: A need exists in the art for a method of generating junction temperatures for multiple-chip packages that takes into account the non-linearity of thermal systems, improves accuracy, and allows more than one multiple-chip package to be measured without again determining the power distribution ratio of each device. To meet this need, the invention includes a method of generating junction temperatures in a multiple-chip package by heating a single chip in the multiple-chip package, measuring the change in temperature of each chip in the multiple-chip package, storing the measured temperature change of each chip, and repeating the heating, measuring, and storing steps for each chip in the multiple-chip package.
    Type: Grant
    Filed: October 29, 2002
    Date of Patent: February 8, 2005
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Xuejun Fan
  • Patent number: 6773964
    Abstract: There exist a need in the art for an IC package that prevents the popcorn effect through every process step in forming an electronic device, as well as during operation of the device. This need is met by an integrated circuit package and a method of manufacturing an integrated circuit package which, during dispensing of an adhesive layer includes at least one via formed by dispensing the adhesive layer in a pattern such that it enables the release of vapor trapped in the integrated circuit package after the attachment of the heat spreader.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: August 10, 2004
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: Xuejun Fan
  • Publication number: 20040083075
    Abstract: A need exists in the art for a method of generating junction temperatures for multiple-chip packages that takes into account the non-linearity of thermal systems, improves accuracy, and allows more than one multiple-chip package to be measured without again determining the power distribution ratio of each device. To meet this need, the invention includes a method of generating junction temperatures in a multiple-chip package by heating a single chip in the multiple-chip package, measuring the change in temperature of each chip in the multiple-chip package, storing the measured temperature change of each chip, and repeating the heating, measuring, and storing steps for each chip in the multiple-chip package.
    Type: Application
    Filed: October 29, 2002
    Publication date: April 29, 2004
    Inventor: Xuejun Fan
  • Publication number: 20040061127
    Abstract: There exists a need in the art for an IC package that prevents the popcorn effect through every process step in forming an electronic device, as well as during operation of the device. This need is met by an integrated circuit package and a method of manufacturing an integrated circuit package which, during dispensing of an adhesive layer includes at least one via formed by dispensing the adhesive layer in a pattern such that it enables the release of vapor trapped in the integrated circuit package after the attachment of the heat spreader.
    Type: Application
    Filed: September 30, 2002
    Publication date: April 1, 2004
    Inventor: Xuejun Fan