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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
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.