Patents by Inventor Kung-Jung Tsai

Kung-Jung Tsai 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).

  • Back light module with grooved light guide plate and method for manufacturing the same
    Publication number: 20050013127
    Abstract: A back light module (100) includes a number of light sources (110), and a light guide plate (120) defining a corresponding number of grooves (124) in one peripheral side (121) thereof. Each light source is positioned corresponding to a respective groove of the light guide plate. Light beams generated by each light source, especially those light beams at extremities of the light source's emission angle ), can therefore penetrate through the peripheral surface of the light guide plate without refraction. Darkened areas (125) of the light guide plate are thus reduced in size.
    Type: Application
    Filed: July 19, 2004
    Publication date: January 20, 2005
    Inventor: Kung-Jung Tsai