Method of manufacturing an image display device incorporating pr

Details Method of manufacturing an image display device incorporating pr Method of manufacturing an image display device incorporating pr

1974-10-17

1976-10-26

Lazarus, Richard B.

Metal working

Barrier layer or semiconductor device making

Barrier layer device making

29 2517, H01J 920

Patent

active

039875229

ABSTRACT:
Method of manufacturing image display apparatus having a photocathode which is proximity focussed with respect to a micro-channel plate, comprising the steps of: positioning a photocathode substrate adjacent to the input face of a microchannel plate, the substrate having a surface facing the microchannel plate which may be altered by ion radiation bombardment; directing ion radiation from the channels of the microchannel plate by imposing a suitable voltage potential across the microchannel plate in a vacuum atmosphere to alter the surface of the substrate in a pattern of individual areas corresponding to the channels of the microchannel plate; forming a bowl-shaped photo-emissive recess at each of the altered individual areas; and spacing the substrate from the microchannel plate by a distance which results in each bowl-shaped photo-emissive recess being proximity focussed on the input aperture of the same channel that defined the individual area at which the bowl-shaped photo-emissive recess was formed.

REFERENCES:
patent: 2989385 (1961-06-01), Gianola
patent: 3614820 (1971-10-01), Morris
B395,478, Jan. 1975, Orthuber, 313/495.

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