Patents Assigned to Laboratoire d'Etude Des Surfaces
  • Patent number: 4763187
    Abstract: A device and method for formation of images with flat video screens by a line- and column-addressed point matrix. Field point matrix uses field emission micro tips as fluorescent screen portions being connected in columns. An electric field is applied between each tip and the fluorescent screen portion corresponding thereto, such that the respective tip emits electrons and a light spot is formed on the video screen, the intensity of which depends upon the applied voltage for attracting electrons. Emission from other tips is blocked by applying a negative voltage to the other columns. Thus, by successive switchings, successive luminous spots are formed on the video screen as desired.
    Type: Grant
    Filed: March 8, 1985
    Date of Patent: August 9, 1988
    Assignee: Laboratoire d'Etude Des Surfaces
    Inventor: Jean P. Biberian