Electric lamp and discharge devices: systems – Plural power supplies – Plural cathode and/or anode load device
Reexamination Certificate
2006-07-18
2006-07-18
Philogene, Haissa (Department: 2828)
Electric lamp and discharge devices: systems
Plural power supplies
Plural cathode and/or anode load device
C315S169300, C315S382000, C313S495000, C313S497000, C313S336000
Reexamination Certificate
active
07078863
ABSTRACT:
A cold-cathode electron source having an improved utilization efficiency of an electron beam and a simple structure. The cold-cathode electron source comprises a gate electrode (4) provided on a substrate (2) through an insulating layer (3) and an emitter (6) extending through the insulating layer (3) and the gate electrode (4) and disposed in an opening of the gate. During the emission of electrons from the emitter (6), the following relationships are satisfied: 10 [V/μm]≧(Va−Vg)/(Ha−Hg)≧Vg/Hg; and Vg/Hg [V/μm]≧Va×10−4×(9.7−1.3×1n(Hg))×(1000/Ha)0.5, where Ha [μm] is an anode-emitter distance, Va [V] is an anode-emitter voltage, Hg [μm] is a gate-emitter distance, and Vg [V] is a gate-emitter voltage.
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Ide Tetsuya
Sawahata Junichi
Urayama Masao
Nixon & Vanderhye P.C.
Philogene Haissa
Sharp Kabushiki Kaisha
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