| 摘要 |
A gas discharge indicator comprising a cathode-supporting substrate and a parallel transparent anode spaced from and hermetically sealed to said substrate to contain an ionizable gas therebetween. Individual cathode segments having greater width than thickness are mounted on the tops of feed-through pins which penetrate the substrate in hermetically sealed relationship and extend beyond the opposite surfaces of the substrate whereby the individual cathode segments are spaced relative to the substrate as well as relative to the anode. The cathode-substrate spacing is such that the cathode segments glow only on the anode or viewable side of the cathode, thereby reducing the sputtering rate, and increasing the luminous efficiency. Additionally, a cup-shaped moat is formed in the cathode side of the substrate about each pin. The raised cathode and moat structure collectively and individually minimize the effects of sputtering and extend the operating life of the indicator.
|
