Electrostatic display device with improved fixed electrode

Details Electrostatic display device with improved fixed electrode Electrostatic display device with improved fixed electrode

1984-03-07

1987-09-22

Brigance, Gerald L.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340764, 34081527, 350269, G09G 316

Patent

active

046958371

ABSTRACT:
An electrostatic display device of the type which includes a fixed electrode (16) of first reflective properties and a movable flapper (30) of different reflective properties has an improved fixed electrode. In particular, the fixed electrode (16) includes structure for defining venting regions or passages (44) which allow air from the atmosphere to communicate with the underside of a mechanical flapper (30) in the display device.

REFERENCES:
patent: 3304549 (1967-02-01), Aiken
patent: 3460134 (1967-06-01), Aiken
patent: 4229075 (1980-10-01), Ueda et al.

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