Patents by Inventor George Liang-Tai Chiu

George Liang-Tai Chiu 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: 5929962
    Abstract: A method and apparatus is presented for transmissive liquid crystal display devices with increased apparent aperture ratios. The aperture ratio is increased by focusing light into the transparent area using a microlens array on a per pixel basis. The method includes the steps of forming a top substrate having a sacrificial substrate adhered to a first transmissive substrate, a transmissive electrode layer adhered to the first transmissive substrate in which a plurality of color filters are disposed, the top substrate further having a rubbing layer formed proximate to the transmissive electrode layer. Forming a bottom substrate comprising a second transmissive substrate and a thin film transistor array disposed within the second transmissive substrate. Disposing a sealing material on one of the top or bottom substrates so as to form an outline of display.
    Type: Grant
    Filed: February 3, 1998
    Date of Patent: July 27, 1999
    Assignee: International Business Machines Corporation
    Inventors: George Liang-Tai Chiu, Fuad Elias Doany, Rama Nand Singh
  • Patent number: 5786934
    Abstract: An optical system is described consisting of reflection birefringent light valves, polarizing beam splitter, color image combining prisms, illumination system, projection lens, filters for color and contrast control, and screen placed in a configuration offering advantages for a high resolution color display. In particular, the present invention includes a color splitting prism assembly having a plurality of output faces through which a separate color component is directed to be reflected by a respective light valve. Color absorbing filters are disposed at each of the output faces to absorb the color components not corresponding to the color directed through each output face.
    Type: Grant
    Filed: August 25, 1997
    Date of Patent: July 28, 1998
    Assignee: International Business Machines Corporation
    Inventors: George Liang-Tai Chiu, Thomas Mario Cipolla, Fuad Elias Doany, Derek Brian Dove, Alan Edward Rosenbluth, Rama Nand Singh, Janusz Stanislaw Wilczynski
  • Patent number: 5786873
    Abstract: An optical system is described consisting of reflection birefringent light valves, polarizing beam splitter, color image combining prisms, illumination system, projection lens, filters for color and contrast control, and screen placed in a configuration offering advantages for a high resolution color display. The system includes a quarter wave plate positioned to suppress stray reflection from the projection lens. The system also includes a second quarter wave plate disposed on the screen and a polarizing film disposed on the second quarter wave plate to suppress ambient light from illuminating the screen and entering the system.
    Type: Grant
    Filed: August 13, 1997
    Date of Patent: July 28, 1998
    Assignee: International Business Machines Corporation
    Inventors: George Liang-Tai Chiu, Thomas Mario Cipolla, Fuad Elias Doany, Derek Brian Dove, Alan Edward Rosenbluth, Rama Nand Singh, Janusz Stanislaw Wilczynski
  • Patent number: 5777789
    Abstract: An optical system is described consisting of reflection birefringent light valves, polarizing beam splitter, color image combining prisms, illumination system, projection lens, filters for color and contrast control, and screen placed in a configuration offering advantages for a high resolution color display. The illumination system includes a light tunnel having a cross-sectional shape corresponding to the geometrical shape of the spacial light modulator to optimize the amount of light projected onto the screen.
    Type: Grant
    Filed: September 19, 1997
    Date of Patent: July 7, 1998
    Assignee: International Business Machines Corporation
    Inventors: George Liang-Tai Chiu, Thomas Mario Cipolla, Fuad Elias Doany, Derek Brian Dove, Alan Edward Rosenbluth, Rama Nand Singh, Janusz Stanislaw Wilczynski