| 摘要 |
In a composite fluorescent display tube of the type comprising an insulator substrate, a plurality of display members mounted on one surface of the substrate, each of the display members including a plurality of fluorescent segments which are selectively energized to display a selected letter, a filament confronting these plurality of display members, and a evacuated envelope containing the above described component parts, there are provided a plurality of independent electrode structures, one for each one of the display members, each electrode structure including a letter forming electrode having a plurality of perforations corresponding to the fluorescent segments, a mesh control grid electrode and a frame shaped electrode interposed between the letter forming electrode and the control grid electrode for connecting them into a unitary structure; and conductors common to corresponding ones of the fluorescent segments of the display members, said conductors extending along the opposite surface of the substrate. |
