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36.1: Invited Paper : The Evolution of Flat Panel Cathode Ray Tubes
Author(s) -
Seats P.,
Gnade B.
Publication year - 2001
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1831727
Subject(s) - crts , cathode ray tube , deflection (physics) , cathode , cathode ray , flat panel , optics , anode , electron gun , electron , beam (structure) , cold cathode , materials science , electrical engineering , physics , engineering , electrode , computer science , computer graphics (images) , nuclear physics , quantum mechanics
Abstract Ever since the rise of television after WWII, display engineers have pursued techniques to shorten cathode ray tubes (CRTs). After reducing neck lengths and increasing deflection angles to a practical maximum of about 110°, the main directions were towards flat panel designs. Typically, these involve the provision of a phosphor coated front plate (anode) sealed to a backplate that is spaced a short distance away. The space between the two plates contains a current source (cathode) and a means to modulate, direct, and accelerate electrons toward the phosphor screen. Designs that have been pursued generally fall into three categories; 1) involving a single beam requiring full deflection in both x and y axes, 2) hybrid designs incorporating multiple beams in one axis combined with electron beam deflection in the second axis, and 3) a fixed x‐y matrix requiring no beam deflection.