| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a cold cathode for a discharge tube that has high mechanical strength, a long service life, and stable light emission behavior. SOLUTION: The cold cathode for a discharge tube is at the top of a lead, that is sealed at an end of a glass tube, in which an inert gas or mercury is sealed, where the oxygen content of the cold cathode is 1 wt.% or less.</p> |
