Gas discharge display panel and cathode used therein
AssigneeHitachi, Ltd.
InventorsToshiyuki Aida, Tokuumi Fukazawa, Yukio Okamoto
Life of this patent
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Abstract
A gas discharge display panel adapted for effecting display by a plurality of gas discharge elements arranged in a matrix has a cathode formed by coating the substrate surface with a (100) preferred film of a rare earth hexaboride such as LaB.sub.6. The gas discharge display panel can be driven at relatively low voltage.
Claims13
A gas discharge display panel adapted for effecting display by a plurality of gas discharge elements arranged in a matrix, comprising:
- cathode elements formed by coating a substrate surface with a film of a rare earth hexaboride, the film having a (100) preferred plane, so as to provide a display panel having a reduced discharge maintenance voltage as compared with that of display panels having nickel or polycrystalline rare earth hexaboride cathodes.
A cathode for use in a gas discharge display panel adapted for effecting display by a plurality of gas discharge elements arranged in a matrix, said cathode comprising:
- a film of a rare earth hexaboride coated on a substrate surface, the film having a (100) preferred plane.
Dependencies are inferred from the claim text.