| 摘要 |
PURPOSE:To make the manufacture easier and to improve the brightness and the luminous efficiency by furnishing a phosphor for luminous display at the center of the display surface at each of the crossing electrodes of the first parallel electrode group. CONSTITUTION:The crossing electrodes 26 of the first parallel electrode group 24m are formed in a thin doughnut shape with a hole 27 at the center, and at the hole 27, a phosphor for red color 28r, a phosphor for green color 28g, or a phosphor for blue color 28b is spread to be installed therein. When a discharge voltage is applied between a specific electrode group of the first parallel electrode group 24m and a specific electrode group of the second parallel electrode group 25l, ultraviolet rays are generated by a discharge between the responding crossing electrodes, and the all or the part of the phosphors 28b, 28r, and 28g of the display discharge cells of the display discharge cells Dl, m are radiated. Therefore, the luminous brightness is increased, the luminous efficiency is improved, and the manufacture is also made easier. |
