Patents by Inventor Adriana T. A. Zegers Van Duijnhoven

Adriana T. A. Zegers Van Duijnhoven 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).

  • Passive display device having movable electrodes and method of manufacturing
    Patent number: 4729636
    Abstract: A psssive display device comprises a first supporting plate (10) and a second supporting plate (11) at least one of which is transparent. The device comprises display elements each having at least one fixed electrode (12, 13) and an electrode 16 which is arranged so as to be movable with respect to the said electrode (12, 13) and has apertures. The movable electrode 16 can be moved by electrostatic forces between two final positions determined by engaging surfaces (14, 15). In each of the final positions the movable electrode 16 engages an engaging surface (14, 15) whose surface structure is not congruent with that of the surface of the electrode so that a finite number of discrete engaging points is formed between the movable electrode and its engaging surfaces. Furthermore methods are described for manufacturing such a display device.
    Type: Grant
    Filed: June 24, 1985
    Date of Patent: March 8, 1988
    Assignee: U.S. Philips Corporation
    Inventors: Ties S. Te Velde, Adriana T. A. Zegers Van Duijnhoven