Discharge tube having discharge active layer(s)
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United States of America Patent
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Oct 8, 2019
Grant Date -
Oct 18, 2018
app pub date -
Sep 23, 2016
filing date -
Oct 9, 2015
priority date (Note) -
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status (Latency Note)
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Abstract
To provide a discharge tube having improved stability of operating voltage to repeated discharges. The discharge tube includes a cylindrical insulating hollow body having openings at least at both ends and at least a pair of sealing electrodes facing to each other for closing the openings so as to seal a discharge control gas inside the body, wherein a discharge trigger film made of a conductive material is formed on the inner circumferential surface of the insulating hollow body, each of the sealing electrodes has a convex portion projecting into the insulating hollow body and a discharge active layer(s) that is/are made of a material having higher electron emission characteristics than that of the sealing electrodes.
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