| 摘要 |
PROBLEM TO BE SOLVED: To efficiently operate a discharge tube suitable for a cold cathode fluorescent tube or the like. SOLUTION: This discharge tube is provided with a piezoelectric substrate formed with a first region polarized in a thickness direction, and a second region polarized in a length direction; primary electrodes provided at upper and lower faces of the piezoelectric substrate formed with the first region; a secondary electrode provided at the end face of the piezoelectric substrate formed with the second region; and a discharge means using the secondary electrode as a negative electrode or a positive electrode. Since pressure rise is performed inside the discharge tube, the discharge tube can discharge only by inputting low voltage to the discharge tube. The discharge tube can thereby be efficiently operated. COPYRIGHT: (C)2005,JPO&NCIPI
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