| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluorescent display tube capable of reducing the number of processes of a process of forming grids and vibration preventing members, molding process, and mounting process, by forming a plurality of vibration preventing members of grids and filaments on a metal plate at the same time, and by forming a plurality of grids and tabs for the vibration preventing member at the same time. SOLUTION: An unfolded parts for molding, composed of the plurality of grids 2 and vibration preventing members 3 jointed by tie-bars 41 shown by figure 3(b)is formed by forming a plurality of etching patterns of a plurality of grids 2 and vibration preventing members on a metal plate MP as shown by figure 3(a), and by etching the metal plate MP. A vibration preventing part 32 is formed by bending a part of a bending line X2, and rising part and fixing part of the tab 21 for the grid 2 and the tab 31 for vibration preventing part 3 are formed by bending bending lines X3, X4. COPYRIGHT: (C)2007,JPO&INPIT
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