Gas discharge panel
AssigneeFujitsu Limited
InventorsKazuo Yoshikawa, Shizuo Andoh
Life of this patent
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Abstract
A pulse driven self-shift plasma display panel characterized by having meander type shift channels for shifting a discharge spot. Each meander type shift channel is composed of an array of discharge cells defined in the discharge gap at the crossing points of electrodes arranged on parallel substrates, the electrodes on one substrate being oriented generally transversely to those on the other substrate, and barrier structure for determining the meander route being provided. Data in the form of a discharge spot is written in at one end of a shift channel and is shifted by the pulse shift voltages with various phases over the meander route for display at the desired positions. The barrier structure may also be formed using photo-luminescent phosphor material to create desired colored display effects.
Claims26
A gas discharge panel having a plurality of meander patterned shift channels, each said shift channel comprising a periodic sequence of adjacent discharge cells, each said discharge cell being defined between respective first and second electrodes on respective substrates and separated by a gas discharge space, said discharge cells of each said shift channel comprising a periodic arrangement of said electrodes on said respective substrates, said electrodes on each said substrate being selectively connected in common by buses arranged on each said respective substrate to define said periodic arrangement of discharge cells of each said meander patterned shift channel,
- said arrangement of said buses on each said substrate comprising means for making said selective common connection of the respective ones of said electrodes on each said substrate without any one of said buses and said common connection means on each said substrate crossing over any other of said buses and said common connection means on the same one of said substrates, and
- said panel comprising means for selectively coupling a discharge between adjacent ones of said discharge cells along each of said shift channels.
A gas discharge panel comprising two substrates separated by a gas discharge space,
- one bus arranged along each of two opposing sides of each substrate on the side thereof facing said discharge gap, said two buses on said sides of each substrate being parallel to each other and transverse to said two buses on the other one of said substrates,
- electrodes extending from each of said buses in the direction of said bus on the opposing side of the same said substrate, said electrodes extending from said buses on each substrate periodically and alternating with the electrodes extending from the other of said buses on the same said substrate, the crossing points of said electrodes on one of said substrates with those on the other of said substrates defining a periodic arrangement of discharge cells, and said buses and electrodes on each substrate not having any crossovers on the same substrate, and
- barrier means in said discharge space for defining a plurality of shift channels extending in the same direction of said buses on one of said substrates, said barrier means comprising linear portions extending in between alternating abjacent pairs of said electrodes on said one substrate, and extensions from said linear portions alternately extending between alternating pairs of said discharge cells adjacent to each of said linear portions on each side of each said shift channels to define a periodic meander pattern for said shift channels.
A gas discharge panel comprising two insulating substrates separated by a discharge gap, a plurality of meander patterned shift channels aligned along a first direction between said substrate, each said shift channel comprising a periodic array of discharge cells, each said discharge cell comprising a respective pair of opposing electrodes mounted on said substrates and separated by said discharge space, one of said electrodes of each said discharge cell extending to comprise in common one of said electrodes of an adjacent discharge cell, said commonly extending electrodes on one of said substrates being oriented in said first direction and said commonly extending electrodes on the other of said substrates being oriented transversely to said first direction, every pair of adjacent discharge cells of each of said shift channels having one of said electrodes in common to both discharge cells of said pair, a bus oriented transversely to said first direction at the two opposing sides of each of said substrates, adjacent the ends of each of said shift channels, and an extension from each of said buses along said first direction along each of said shift channels to connect said electrodes to said buses, said electrodes, buses and extensions from buses on each said substrate being arranged without any crossover thereof on each said substrate.
A gas discharge panel comprising a plurality of meander patterned shift channels aligned side by side along a first direction, each said shift channel comprising a sequence of adjacent discharge cells, each said discharge cell comprising an electrode on each of two substrates and separated by a discharge gap, each adjacent pair of said discharge cells along each of said shift channels comprising one of said electrodes extending in common to both cells of said pair, said commonly extending electrodes of each said shift channel on a first one of said substrates being aligned along said first direction and side by side with, but spaced from, a corresponding common electrode of each adjacent shift channel, and said commonly extending electrodes on the other of said substrates being aligned along, and with inclination to, a plurality of lines transverse to said first direction, said inclination of said electrodes on said other substrate being sufficient to selectively increase the separation between selected pairs of said discharge cells of each said shift channel which do not have one of said commonly extending electrodes in common to both cells of said pair, a bus arranged on each of two opposing sides of each of said substrates, and means for selectively connecting said buses to said electrodes of said shift channels, said buses, said electrodes and said means for said connection thereof on each said substrate comprising an arrangement for no crossover thereof.
Dependencies are inferred from the claim text.