| 摘要 |
PROBLEM TO BE SOLVED: To make a cold cathode fluorescent discharge tube emit light with high brightness and long life. SOLUTION: An outer tube (1) made of glass forming a closed space (4) in which discharge gas is enclosed, a pair of electrodes (3) fixed to both ends of the outer tube (1), and an inner tube (2) made of glass arranged in the closed space (4) forming a hollow part (2c) communicated with the closed space (4) through a pair of end parts (2d), are formed on the cold cathode fluorescent discharge tube. Since an outer diameter of a discharge part (3b) of the electrode (3) is larger than inner diameter of the inner tube (2), the cold cathode fluorescent discharge tube having long life, emitting light with high brightness, can be provided. COPYRIGHT: (C)2007,JPO&INPIT
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