Patents by Inventor Teh-Hua Ju

Teh-Hua Ju 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: 5497258
    Abstract: A Spatial Light Modulator (SLM) includes a Ferroelectric Liquid Crystal (FLC) layer that is contained in a thin gap or cavity between an upper cover glass and a lower Very Large Scale Integration (VLSI) Complementary Metal Oxide Semiconductor (CMOS) chip. The circuits on the VLSI/CMOS chip are wire connected to an underlying substrate member. A selected volume and vertical height of medium and small size solder joints between the VLSI chip and the substrate member produce self aligning of the VLSI chip with the underlying substrate member during solder reflow. These solder joints also produce an upward directed force that urges the VLSI chip in an upward direction away from the substrate member during solder reflow. A selected volume and vertical height of large size solder joints between the substrate member and the cover glass produce a downward directed force that urges the cover glass in a downward direction during solder reflow.
    Type: Grant
    Filed: May 27, 1994
    Date of Patent: March 5, 1996
    Assignee: The Regents of the University of Colorado
    Inventors: Teh-Hua Ju, Yung-Cheng Lee, Wei Lin