Display tube

Details Display tube Display tube

1986-02-14

1988-04-12

Blum, Theodore M.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

313422, H01J 2970, H01J 2972

Patent

active

047376902

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 communicates 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 beam is directed to a 180.degree. reversing lens which deflects the electron beam into the front portion. 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 energized, vertically spaced, horizontally elongate electrodes. The pattern of energization 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.

REFERENCES:
patent: 2982875 (1961-05-01), Gabor
patent: 4137486 (1979-01-01), Schwartz
patent: 4511822 (1985-04-01), Washington et al.
patent: 4577133 (1986-03-01), Wilson

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