Twisting ball panel display

Details Twisting ball panel display Twisting ball panel display

1976-05-05

1978-11-21

Trafton, David L.

Communications: electrical

Audible indication

Percussion-type sound producer

340324M, 350362, G09F 932

Patent

active

041268547

ABSTRACT:
A display system in which the display panel is comprised of a plurality of particles which have an electrical anisotropy due to hemispherical surface coatings of different Zeta potential and their distribution in a volume of a dielectric liquid, and which also have an optical anisotropy due to the hemispherical surface coatings having different optical characteristics which may be due to the color or other optical properties of the hemispherical coatings. Under the action of an external electric field, the particles will rotate in accordance with their electrical anisotropy to provide a display in accordance with their optical anisotropy. The display has switching threshold and memory capabilities.

REFERENCES:
patent: 1963496 (1934-06-01), Land
patent: 3210757 (1965-10-01), Jacob
patent: 3341274 (1967-09-01), Marks
patent: 3451742 (1969-06-01), Marks
patent: 3469258 (1969-09-01), Winrow
patent: 3594065 (1971-07-01), Marks
patent: 3767392 (1973-10-01), Ota

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