Patents by Inventor Wing Chui Yip

Wing Chui Yip 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).

  • Method, materials and apparatus for driving gray-scale bistabel cholesteric displays
    Publication number: 20030030612
    Abstract: The invention provides a method for controlling the grey-scale modulation of a reflective bistable cholesteric display by applying selected sequences of high and low pulses to modulate the cholesteric domain size and helical axis orientation. Non-mesogenic dopants may also be added to reduce the drive voltage.
    Type: Application
    Filed: May 10, 2002
    Publication date: February 13, 2003
    Inventors: Wing Chui Yip, Hoi Sing Kwok, Cheryl Sun