| 摘要 |
FIELD: cold cathodes and devices using them. SUBSTANCE: cold cathode has emissive member made of cellular carbon material. Emissive member has surface characterized in plurality of emissive ribs. Field-emission device incorporating mentioned cathode, anode, vacuum medium surrounding them, and means for maintaining voltage drop across cathode and anode is also described. EFFECT: enhanced efficiency and reliability, facilitated manufacture, enhanced emission stability of cathode. 15 cl, 6 dwg, 1 tbl
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