H - Electricity
01
J
313/35.312
H01J 29/70 (2006.01) H01J 29/46 (2006.01) H01J 31/12 (2006.01)
Patent
CA 1194080
ABSTRACT: A flat display tube comprising an envelope including a faceplate on which a luminescent screen is provided. An internal divider divides the interior of the envelope vertically into a front portion adjoining the faceplate and a rear portion which communi- cates with the front portion via a space between the upper edge of the divider and a peripheral wall of the envelope. An upwardly directed electron gun and line scanning means are disposed in the rear portion. The line deflected electron bean is directed to a 180° reversing lens which deflects the electron beam into the front por- tion. An electron multiplier is disposed in the front portion adjacent to, but spaced from, the faceplate. The electron beam in the front portion undergoes frame deflection by means of a plurality of selectively energised, vertically spaced, horizontally elongate electrodes. The pattern of energisation of the electrodes is such as to deflect an end portion of the electron beam to the input side of the electron multiplier. The beam having undergone electron multiplication is accelerated to the screen.
406346
Lamport Daphne L.
Woodhead Alfred W.
N.v. Philips Gloeilampenfabrieken
Van Steinburg C.e.
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