Patents by Inventor Yvan Archambaud

Yvan Archambaud 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).

  • Liquid crystal display using opaque flaps for reflection
    Patent number: 4723840
    Abstract: A liquid crystal display device is provided comprising a liquid crystal wafer operating by transmission which is disposed in front of a sheet of transparent material having a multitude of parallel opaque flaps substantially perpendicular to the wafer. In daytime use, light rays substantially perpendicular to the wafer pass through the sheet towards the rear of the wafer. For nightime use, the sheet reflects rearwardly of the wafer a part of the light rays coming from a lamp and the flaps stop the other part of these light rays.
    Type: Grant
    Filed: May 29, 1986
    Date of Patent: February 9, 1988
    Assignee: Veglia
    Inventors: Jean Humbert, Yvan Archambaud