| 摘要 |
<p>A fluorescent display tube adapted to a large screen display. It has an enlarged area on which electron beams impinge, and also eliminates the effect of electric field near the glass wall of the fluorescent display tube (1) upon the electron beams, enabling the phosphor segments R, G and B to be arranged at positions close to the peripheral side wall (13) of the tube. Therefore, the light-emitting area is increased to obtain bright display. Furthermore, the distances between neighboring phosphor segments of the RGB trio on the neighboring fluorescent display tubes (1) are shortened, and the distances between the trios are shortened in each of the fluorescent display tubes (1). Therefore, the pitch is shortened as a whole in the phosphor trio arrangement in the large-screen display system, thus contributing to improving resolution.</p> |
