Display device having visible pattern

Details Display device having visible pattern Display device having visible pattern

1976-10-22

1978-10-17

Curtis, Marshall M.

Communications: electrical

Systems

Portable self-contained

350332, G06F 314

Patent

active

041212029

ABSTRACT:
A display device comprising at least a pair of electrodes chargeable to opposite polarities from each located relative to a background which provides a first degree of contrast when the electrodes are not charged and a second degree of contrast when the electrodes are charged, is provided with a visible pattern. The visible pattern is co-extensive with at least a portion of the electrodes so as to render the electrodes less discernible at low degree of contrast.

REFERENCES:
patent: 2921129 (1960-01-01), Marks

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