Patents by Inventor Jianlin Li

Jianlin Li 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: 20070153543
    Abstract: We disclose a flat panel display suitable for viewing primarily from viewing angles or envelopes that are away from the direction that is perpendicular to the display panel (display normal). We disclose a way of increase the brightness of the display at large viewing angles. It is desirable to have such a display when the display is primarily viewed from directions that are not along the display normal, such as in the case of the cockpit of a transport aircraft where a display could be viewed mostly from left and right by the pilot and co-pilot. The display uses a light re-distributor (LRD) to increase the brightness of the display at larger viewing angles. The LRD consists of light re-directing portion, light straight-transmission portion and light scattering portion. For transmissive or transflective displays, light rays from the backlight entering the LRD at the light-redirecting portions are redirected and the rays that hits the light straight-transmission portion pass the LRD without changing direction.
    Type: Application
    Filed: January 3, 2006
    Publication date: July 5, 2007
    Inventors: Ming Xu, Jianlin Li
  • Patent number: 6583838
    Abstract: A liquid crystal display device including a polyimide alignment layer, having a bistable liquid crystal material and a polymer stabilizer in an amount effective to stabilize the liquid crystal the liquid crystal preferably having a low or medium pretilt angle to eliminate undesired states and stripe tendency and to increase hysteresis. The device has a low driving voltage, low power consumption and fast switching.
    Type: Grant
    Filed: February 22, 2000
    Date of Patent: June 24, 2003
    Assignee: Kent State University
    Inventors: Charles D. Hoke, Philip J. Bos, Jianlin Li
  • Patent number: 6133975
    Abstract: A liquid crystal display device including a polyimide alignment layer, having a bistable liquid crystal material and a polymer stabilizer in an amount effective to stabilize the liquid crystal, preferably about 2 weight percent, associated with the liquid crystal material, the liquid crystal having a low pretilt angle, to eliminate stripe tendency and to increase hysteresis. The device has a low driving voltage, low power consumption and fast switching.
    Type: Grant
    Filed: May 7, 1997
    Date of Patent: October 17, 2000
    Assignee: Kent State University
    Inventors: Jianlin Li, Philip J. Bos
  • Patent number: 5831700
    Abstract: A liquid crystalline light modulating pixel includes first and second cell wall structures and nematic liquid crystal within a UV cured polymer network disposed therebetween. The first and second cell wall structures cooperate with the liquid crystal to form four liquid crystal domains within the pixel. The liquid crystal in each of the domains exhibits a twisted nematic liquid crystal structure and the orientation of the liquid crystal director of the liquid crystal adjacent one of the cell wall structures in at least two domains is different. The polymer network stabilizes the four domain structure at both high field and zero field conditions.
    Type: Grant
    Filed: May 15, 1996
    Date of Patent: November 3, 1998
    Assignee: Kent State University
    Inventors: Jianlin Li, Philip J. Bos, Jianmin Chen