| 摘要 |
PCT No. PCT/JP89/00330 Sec. 371 Date Nov. 29, 1989 Sec. 102(e) Date Nov. 29, 1989 PCT Filed Mar. 29, 1989 PCT Pub. No. WO89/09482 PCT Pub. Date Oct. 5, 1989.The present invention relates to a fluorescent display tube suitable for use in a large screen display. The present invention enables the fluorescent segments R, G and B to be arranged at positions close to a peripheral side wall (13) of the tube (1) by, particularly, enlarging a range to which electron beams can impinge and eliminating the influence of electric field near the glass wall of the fluorescent display tube. Upon this, light emitting area can be increased to obtain bright display and distances between adjacent fluorescent segment R, G and B trios of adjacent fluorescent display tubes (1) and between adjacent trios in each fluorescent display tube (1) are made small to thereby shorten the arranging pitch of the fluorescent trios as a whole in a large screen display device, improving resolution.
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