Loading patent…
AssigneesPhilips Electronics North America Corporation, Tektronix, Inc.
InventorsPetrus 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
Estimating the term…
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.
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, said plasma channels each comprising spaced cathode and anode plasma electrodes and an ionizable gas filling, characterized in that the cathode electrodes have surface portions comprised of a negative electron affinity material having a conductivity of at least 10.sup.-4 mho/cm.
Dependencies are inferred from the claim text.