X-Y matrix type electroluminescent display panel

Details X-Y matrix type electroluminescent display panel X-Y matrix type electroluminescent display panel

1976-05-04

1977-03-29

Demeo, Palmer C.

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313505, 313509, H05B 3302, H05B 3314, H05B 3322

Patent

active

040151662

ABSTRACT:
This invention relates to an X-Y matrix type electroluminescent display panel. The panel includes a transparent insulating substrate, transparent and parallel X-electrodes of strip shape provided on said transparent insulating substrate, a D.C. electroluminescent layer provided on said transparent parallel electrodes; parallel Y-electrodes of strip shape provided on said D.C. electroluminescent layer, the direction of said Y-electrodes being perpendicular to that of said X-electrodes, said X- and Y-electrodes and said D.C. electroluminescent layer defining display elements at the intersections of said X- and Y-electrodes; and a mesh-shaped insulating layer, preferably of black color, for insulating said display elements from each other at least in the vicinity of said X-electrodes. Because of the mesh-shaped insulating layer, it becomes possible to achieve uniform "forming" of said D.C. electroluminescent layer and to improve the brightness and contrast of the resultant display panel.

REFERENCES:
patent: 2698915 (1955-01-01), Piper
patent: 3015036 (1961-12-01), Butler
patent: 3059118 (1962-10-01), Koury
patent: 3107315 (1963-10-01), Wolfe et al.
patent: 3368099 (1968-02-01), Arnold
patent: 3502885 (1970-03-01), Stewart
patent: 3504214 (1970-03-01), Lake et al.
patent: 3573530 (1971-04-01), Kohashi
patent: 3650824 (1972-03-01), Szepesi et al.

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