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Field emission cold cathode having concentric cathode areas and feeder areas, and cathode ray tube having such a field emission cold cathode
Field emission cold cathode having concentric cathode areas and feeder areas, and cathode ray tube having such a field emission cold cathode
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机译:具有同心阴极区域和馈电区域的场发射冷阴极,以及具有这种场发射冷阴极的阴极射线管
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摘要
A field emission cold cathode comprises a silicon substrate, a first insulation layer defining peripheries of a first and second feeder area disposed concentric with each other, a cathode area having a plurality of conical emitters overlying the first insulation layer, and a gate electrode layer having a plurality of openings each for applying electric field to each of the conical emitter. The cathode area has a narrower width than the width of the underlying insulating zone, wherein the cathode area has peripheries apart by fixed distance L from the peripheries of the feeder area. In this configuration, a uniform emitter current can be attained among the emitters to thereby obtain a high luminescence and high resolution CRT.
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