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Micro power switch using a cold cathode and a driving method thereof

  • US 6,057,636 A
  • Filed: 09/16/1997
  • Issued: 05/02/2000
  • Est. Priority Date: 09/17/1996
  • Status: Expired due to Fees
First Claim
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1. A micro power switch comprising:

  • a cold cathode for emitting electrons;

    an anode for capturing the electrons emitted from the cold cathode, the anode being opposed to the cold cathode; and

    a control electrode, provided near the cold cathode, for controlling an amount of the electrons emitted from the cold cathode,wherein the cold cathode is made of material having a smaller electron emission barrier than the control electrode, the anode is applied with a positive potential with respect to the cold cathode, and the control electrode is applied with a varying potential equal to or lower than a potential of the cold cathode; and

    wherein in the case where the electron emission from the cold cathode is stopped, the varying potential is lower than the potential of the cold cathode.

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