Patents by Inventor Petrus Franciscus Gerardus Bongaerts

Petrus Franciscus Gerardus Bongaerts 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: 6225029
    Abstract: An electronic array of data elements, in particular, a flat display device preferably of the PALC type in which the plasma channels are defined by walls of an organic material, preferably a polyimide material. A protective layer is provided over the polyimide walls to prevent deterioration. Spaced electrode portions are preferably provided on facing surfaces of the walls. The preferred method is to lay down a thick layer of polyimide material and a thin resist over the polyimide layer, pattern the resist, and then use the resist to pattern the polyimide layer in the shape of the desired walls. The walls are then covered with a thin dielectric sheet-like member to form the plasma channels.
    Type: Grant
    Filed: April 16, 1998
    Date of Patent: May 1, 2001
    Assignee: Philips Electronics North America Corp.
    Inventors: Petrus Franciscus Gerardus Bongaerts, Henri R. J. R. Van Helleputte, Adrianus Leonardus Josephus Burgmans, Jacob Bruinink, Babar Ali Khan, Karel Elbert Kuijk
  • Patent number: 6016032
    Abstract: A channel member for a PALC panel has a channel in its surface and a wire in the channel as an electrode of the PALC panel.
    Type: Grant
    Filed: December 15, 1997
    Date of Patent: January 18, 2000
    Assignees: Tektronix, Inc., Philips Electronics North America Corporation
    Inventors: Thomas S. Buzak, Kevin J. Ilcisin, Paul C. Martin, Hans J. G. A. Den Biggelaar, Jacob Bruinink, Petrus Franciscus Gerardus Bongaerts, Adrianus Leonardus Josephus Burgmans, Babar Ali Khan, Henri Roger Jules Richard Van Helleputte
  • Patent number: 5914562
    Abstract: A process for fabricating the channel substrate of a plasma-addressed electro-optic display device comprising a layer of electro-optic material, data electrodes coupled to the electro-optic layer and adapted to receive data voltages for activating portions of the electro-optic layer, and a plurality of plasma channels extending generally transverse to the data electrodes for selectively switching on said electro-optic portions and closed off by a thin dielectric sheet, typically a thin glass sheet. The channel substrate is fabricated using anodic bonding to attach the thin glass sheet to an etched or walled preferably glass substrate containing the channels. This reduces stresses in the thin glass sheet. Reduced stress allows post processing of the thin sheet, particularly further etching to reduce its thickness.
    Type: Grant
    Filed: February 6, 1995
    Date of Patent: June 22, 1999
    Assignees: Philips Electronics North America Corporation, Tektronix, Inc.
    Inventors: Babar Ali Khan, Jacob Bruinink, Adrianus Leonardus Josephus Burgmans, Henri Roger Jules Richard Van Helleputte, Petrus Franciscus Gerardus Bongaerts, Karel Elbert Kuijk, Thomas Stanley Buzak, Kevin John Ilcisin, Paul Christopher Martin
  • Patent number: 5835167
    Abstract: A plasma-addressed liquid crystal color display device comprising a layer of liquid crystal material, data electrodes coupled to the liquid crystal layer and adapted to receive data voltages for activating pixels of the liquid crystal layer, and a plurality of ionizable-gas-filled plasma channels extending generally transverse to the data electrodes for selectively switching on said liquid crystal pixels. The plasma channels are sealed off by a thin dielectric sheet, and a color filter layer is provided in the device through which changes in the attenuation of the liquid crystal pixels may be viewed to obtain a color image. To reduce the magnitude of the data voltages needed to activate the device, the device layers are configured and given compositions such that a much higher fraction of the applied data voltages appears across the liquid crystal layer thereby allowing a smaller data voltage to be used to obtain the same effect on the liquid crystal pixels.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: November 10, 1998
    Assignee: Philips Electronics North America
    Inventors: Petrus Franciscus Gerardus Bongaerts, Jacob Bruinink, Adrianus Leonardus Josephus Burgmans, Henri Roger Jules Richard Van Helleputte, Babar Ali Khan, Karel Elbert Kuijk, Thomas Stanley Buzak, Kevin John Ilcisin, Paul Christopher Martin
  • Patent number: 5808413
    Abstract: A flat display device preferably of the PALC type in which the plasma channels are defined by walls of an organic material, preferably a polyimide material. A protective layer is provided over the polyimide walls to prevent deterioration. Spaced electrode portions are preferably provided on facing surfaces of the walls. The preferred method is to lay down a thick layer of polyimide material and a thin resist over the polyimide layer, pattern the resist, and then use the resist to pattern the polyimide layer in the shape of the desired walls. The walls are then covered with a thin dielectric sheet-like member to form the plasma channels.
    Type: Grant
    Filed: November 10, 1997
    Date of Patent: September 15, 1998
    Assignee: Philips Electronics North America Corporation
    Inventors: Petrus Franciscus Gerardus Bongaerts, Henri R. J. R. Van Helleputte, Adrianus Leonardus Josephus Burgmans, Jacob Bruinink, Babar Ali Khan, Karel Elbert Kuijk
  • Patent number: 5805122
    Abstract: A plasma-addressed electro-optic display device having a layer of electro-optic material, data electrodes coupled to the electro-optic layer and adapted to receive data voltages for activating portions of the electro-optic layer, and a plurality of plasma channels extending generally transverse to the data electrodes for selectively switching on the electro-optic portions. The plasma channels each contain spaced elongated cathode and anode plasma electrodes and an ionizable gas filling. The cathode and anode electrodes are arranged in groups to reduce the connections required. Reference voltages are applied to the grouped cathode and anode electrodes such that the data voltages required to operate the panel are reduced decreasing vertical crosstalk. Various driving voltage waveforms can be used for further crosstalk reduction, to reduce the number of voltage levels required, and cause the cathode and anode electrodes to exchange roles during operation to extend lifetime.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: September 8, 1998
    Assignee: Philips Electronics North America Corporation
    Inventors: Petrus Franciscus Gerardus Bongaerts, Jacob Bruinink, Adrianus Leonardus Josephus Burgmans, Henri Roger Jules Richard Van Helleputte, Babar Ali Khan, Karel Elbert Kuijk
  • Patent number: 5705886
    Abstract: A plasma-addressed electro-optic display device having a layer of electro-optic material, data electrodes coupled to the electro-optic layer and adapted to receive data voltages for activating portions of the electro-optic layer, and a plurality of plasma channels extending generally transverse to the data electrodes for selectively switching on the electro-optic portions. The plasma channels each contain spaced elongated cathode and anode plasma electrodes and an ionizable gas filling. To improve performance, reliability and lifetime of the device, at least the cathode electrodes have surface portions of a negative electron affinity material. Preferably, the negative electron affinity material is a film of conductive or semiconductive diamond, diamond-like carbon, or aluminum nitride.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: January 6, 1998
    Assignees: Philips Electronics North America Corp., Tektronix, Inc.
    Inventors: Petrus Franciscus Gerardus Bongaerts, Jacob Bruinink, Adrianus Leonardus Josephus Burgmans, Henri Roger Jules Richard Van Helleputte, Babar Ali Khan, Karel Elbert Kuijk, Thomas Stanley Buzak, Kevin John Ilcisin, Paul Christopher Martin
  • Patent number: 5696569
    Abstract: A plasma-addressed electro-optic display device comprising a layer of electro-optic material, data electrodes coupled to the electro-optic layer and adapted to receive data voltages for activating portions of the electro-optic layer, and a plurality of plasma channels extending generally transverse to the data electrodes for selectively switching on said electro-optic portions. The plasma channels each comprise spaced elongated cathode and anode plasma electrodes and an ionizable gas filling. To improve performance and increase the effective aperture and provide a stable discharge, the channels are configured with a substantially flat bottom surface portion and curved side wall surface portions on which the electrodes are deposited such that the spacing between the electrodes is increased and the electrode surfaces form an angle of the order of 90.degree..
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: December 9, 1997
    Assignees: Philips Electronics North America, Tektronix, Inc.
    Inventors: Petrus Franciscus Gerardus Bongaerts, Jacob Bruinink, Adrianus Leonardus Josephus Burgmans, Henri Roger Jules Richard van Helleputte, Babar Ali Khan, Karel Elbert Kuijk, Thomas Stanley Buzak, Kevin John Ilcisin, Paul Christopher Martin