Electron-optics of the fast intelligent tracking (F!T) tube: A CRT without a shadow mask

被引：0
作者：
Krijn, M.P.C.M. [1 ]
Ijzerman, W.L. [1 ]
Van Den Brink, H.B. [1 ]
Willemsen, O.H. [1 ]
Vissenberg, M.C.J.M. [1 ]
机构：
[1] Philips Research Laboratories, 5656 AA Eindhoven
来源：
Journal of the Society for Information Display | 2003年 / 11卷 / 2 SPEC ISS.期
关键词：
CRT; Electron gun; Spot size; Tracking;
D O I：
10.1889/1.1825663
中图分类号：
学科分类号：
摘要：
In this paper, we describe the electron-optics involved in realizing a maskless CRT based on tracking the electron beams along horizontally aligned phosphor lines. We discuss the boundary conditions in order for the system to function. Emphasis is placed on the requirements of color purity, beam current, and spot size. A dedicated electron gun has been designed and tested. Results indicate that the spot-size requirements for the feasibility of the concept can be met. The depth of focus, in terms of the allowed mismatch of the dynamic focusing voltage, is small. Inter-beam space-charge repulsion turns out to be unproblematic. The cathode drive is shown to lead to beam displacements that cannot be corrected. Consequently, a grid-1 drive has to be used.
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页码：325 / 332
页数：7
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