| 摘要 |
<p>PROBLEM TO BE SOLVED: To keep a space between substrates stably by improving the stress resistance and a characteristic of the buckling resistance, so as to prevent a deformation caused by the atmospheric pressure from the outer side. SOLUTION: On the inner surface of an anode substrate 2, a display 6 consisting of an anode conductor 4 and a phosphor layer 5 is formed. On the inner surface of a cathode substrate 3, the anode substrate 2 and its electronic source are formed opposing to the display 6. An envelope 1 is composed by sealing the anode substrate 2 and the cathode substrate 3 on the outer periphery by placing a specific interval. A supporting member 15 is housed and provided in the envelope 1. The supporting member 15 furnishes a plate member 16 forming plural through holes 18 at specific intervals, and stays for reinforcement 19 inserted to the through holes 18 and their central parts in the axial direction are fixed to the through holes 18. In the stays 19 for reinforcement, both ends 19a and 19b are abutted to the inner surfaces of the anode substrate 2 and the cathode substrate 3 to support them, and they maintain between the anode substrate 2 and the cathode substrate 3 at a specific interval.</p> |
