Colloidal-type display and indicator system, and method of its m

Details Colloidal-type display and indicator system, and method of its m Colloidal-type display and indicator system, and method of its m

1984-11-26

1987-03-31

Corbin, John K.

G02F 101

Patent

active

046538682

ABSTRACT:
To eliminate the edge effect, a mask is applied within the cell to one of the cover plates defining the cell, preferably to the back plate electrode (3) applied at the inside of the cell to the front glass plate (2). The mask (4) can be applied by various processes, for example printing, evaporating, galvanically, photographically, or by combined vapor-depositing and etching processes. By suitable use of color, colored masking is also possible. The mask is shaped and dimensioned to sharply define the optical display in the desired pattern as determined by the shape of counter electrode (6) applied to a back support plate (7) and is so positioned with respect to that electrode that the edge effect is suppressed.

REFERENCES:
patent: 3897991 (1975-08-01), Tsunoda et al.
patent: 4552437 (1985-11-01), Gantenbrink et al.

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