Patents by Inventor Geert J. T. Davids

Geert J. T. Davids 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).

  • Patent number: 4998153
    Abstract: A first charge storage electrode (21) has a first row (21b) of teeth interdigitated with a second row (22b) of teeth of a second charge storage electrode (22). The second storage electrode (22) has a third row (22c) of teeth interdigitated with a fourth row (23b) of teeth of a third charge storage electrode (23). The first and third rows (21b and 22c) overlie one group (11b) of a series of parallel conduction channels while the second and fourth rows (22b and 23b) overlie another group (11a) of the parallel channels. A first charge transfer electrode (24) is provided to transfer charge packets into sites beneath the first storage electrode.
    Type: Grant
    Filed: October 27, 1988
    Date of Patent: March 5, 1991
    Assignee: U.S. Philips Corporation
    Inventors: Karel E. Kuyk, Jan W. Slotboom, Geert J. T. Davids, Wiegert Wiertsema, Arie Slob
  • Patent number: 4907049
    Abstract: A charge-coupled semiconductor device has a plurality of silicon electrodes for storing and transporting information-carrying charge, which electrodes are located on an insulating layer and are mutually separated by grooves having a width of at most 1 .mu.m. According to the invention, transfer electrodes are arranged in the grooves, these electrodes being coplanar with the remaining electrodes. The thickness of the insulating layer under the transfer electrodes is substantially equal to that under the storage electrodes. The invention also relates to a method of manufacturing a semiconductor device having such an electrode system.
    Type: Grant
    Filed: July 27, 1989
    Date of Patent: March 6, 1990
    Assignee: U.S. Philips Corp.
    Inventors: Jan W. Slotboom, Henricus G. R. Maas, Kazimierz Osinki, Geert J. T. Davids
  • Patent number: 4881250
    Abstract: A charge-coupled device has a semiconductor body defining a charge transfer channel. Charge storage and charge transfer electrodes are provided for, respectively, defining charge wells within the charge transfer channel and transferring charge between charge wells. Two clock lines provide clock signals to the charge storage and transfer electrodes for controlling movement of charge between charge wells and to an output connection of the charge transfer channel. Signal processing means in the form of a sense amplifier are provided for processing an output from the charge transfer channel and a conductive path connects the output connection and the signal processing means. The conductive path crosses at least one of the clock lines and a conductive shielding layer extends between and is electrically isolated from the said at least one clock line and the conductive path.
    Type: Grant
    Filed: July 7, 1988
    Date of Patent: November 14, 1989
    Assignee: U.S. Philips Corp.
    Inventors: Geert J. T. Davids, Wiegert Wiertsema
  • Patent number: 4766089
    Abstract: A semiconductor device is set forth comprising a number of parallel first electrodes (1) which are located on an insulating layer and are mutually separated by grooves with insulated walls, in which second electrodes (2) coplanar with the first electrodes (1) are provided. According to the invention, the first electrodes (1) are covered by an insulating layer provided with first contact windows (7), which each overlap at least one second electrode (2). The second electrodes (2) are provided with self-aligned second contact windows (8). Each second electrode (2) exhibits between its second contact window (8) and the first contact windows (7) overlapping the second electrode and also between said first contact windows (7), at least one interruption (9).
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: August 23, 1988
    Assignee: U.S. Philips Corporation
    Inventors: Geert J. T. Davids, Anton P. M. van Arendonk
  • Patent number: 4754311
    Abstract: A semiconductor device is set forth comprising a number of parallel first electrodes (1) which are located on an insulating layer and are mutually separated by grooves with insulated walls, in which second electrodes (2) coplanar with the first electrodes (1) are provided. According to the invention, the first electrodes (1) are covered by an insulating layer provided with first contact windows (7), which each overlap at least one second electrode (2). The second electrodes (2) are provided with self-aligned second contact windows (8). Each second electrode (2) exhibits between its second contact window (8) and the first contact windows (7) overlapping the second electrode and also between said first contact windows (7), at least one interruption (9).
    Type: Grant
    Filed: May 1, 1986
    Date of Patent: June 28, 1988
    Assignee: U.S. Philips Corp.
    Inventors: Geert J. T. Davids, Anton P. M. Van Arendonk