Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube
Patent
1985-12-03
1988-02-23
Boudreau, Leo H.
Electric lamp and discharge devices
With luminescent solid or liquid material
Vacuum-type tube
313495, 313491, 313493, H01J 1934, H01J 1946, H01J 1954, H01J 2932
Patent
active
047272848
ABSTRACT:
A luminescent display tube wherein a plurality of luminescent trios and a plurality of electrode units corresponding thereto are disposed opposite to each other in a single housing, and a member forming an enclosure of each electrode unit functions also as an accelerating electrode. The invention realizes a high-luminance display tube or display cell of a small-sized structure which incorporates a plurality of luminescent trios serving as picture elements and electrode units corresponding thereto. Consequently, it becomes possible to construct a large-picture display apparatus of moderate dimensions by arraying a multiplicity of such display cells. Furthermore, a plurality of wire cathodes and first grids as well as a common second grid are grouped into an electrode unit with its enclosure functioning as the second grid, and such electrode units are arrayed correspondingly to individual luminescent trios, thereby facilitating assembly and manufacture of a desired display cell. In the electrode units constituting the display cell, each of the first grids is positioned and set by an insulator substrate and a pair of insulator walls in each unit, without any other means such as spot welding, so that the electrode unit can be produced in a sufficiently small structure, hence ensuring remarkable facility in assembly and manufacture of such small-sized display cell.
REFERENCES:
patent: 4100455 (1978-07-01), DuBois
Nakagawa Hideaki
Ohkoshi Akio
Shikakura Kunio
Tsuruta Koji
Boudreau Leo H.
Sony Corporation
Wieder K.
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