Patents by Inventor Leo Marie Weegels

Leo Marie Weegels 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).

  • Display device and lenticular screen
    Patent number: 6667786
    Abstract: The invention relates to a display device comprising LC panels arranged next to each other. To reduce the visibility of a seam between two adjacent LC panels and to avoid grey scale inversion, collimated light is applied. A lenticular foil is used to enlarge the viewing angle in the horizontal direction. If the seam is only present in a vertical direction, the widest viewing angle in the vertical direction should be chosen. This choice leads to an asymmetric viewing angle in a horizontal direction. To reduce the asymmetry in the horizontal viewing angle, the lenticulars of the screen have a trapezoidal shape. The apex angle depends on the desired spread and viewing angle symmetry in the horizontal direction.
    Type: Grant
    Filed: December 7, 2001
    Date of Patent: December 23, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Johannes Cornelis Van de Ven, Leo Marie Weegels
  • Display device and lenticular screen
    Publication number: 20020093607
    Abstract: The invention relates to a display device comprising LC panels arranged next to each other. To reduce the visibility of a seam between two adjacent LC panels and to avoid grey scale inversion, collimated light is applied. A lenticular foil is used to enlarge the viewing angle in the horizontal direction. If the seam is only present in a vertical direction, the widest viewing angle in the vertical direction should be chosen. This choice leads to an asymmetric viewing angle in a horizontal direction. To reduce the asymmetry in the horizontal viewing angle, the lenticulars of the screen have a trapezoidal shape. The apex angle depends on the desired spread and viewing angle symmetry in the horizontal direction.
    Type: Application
    Filed: December 7, 2001
    Publication date: July 18, 2002
    Inventors: Johannes Cornelis Van De Ven, Leo Marie Weegels