Passive display device having movable electrodes and method of m

Details Passive display device having movable electrodes and method of m Passive display device having movable electrodes and method of m

1985-06-24

1988-03-08

Corbin, John K.

Communications: electrical

Land vehicle alarms or indicators

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

340763, 350266, G02B 504, G02B 2602, G09G 316

Patent

active

047296364

ABSTRACT:
A psssive display device comprises a first supporting plate (10) and a second supporting plate (11) at least one of which is transparent. The device comprises display elements each having at least one fixed electrode (12, 13) and an electrode 16 which is arranged so as to be movable with respect to the said electrode (12, 13) and has apertures. The movable electrode 16 can be moved by electrostatic forces between two final positions determined by engaging surfaces (14, 15). In each of the final positions the movable electrode 16 engages an engaging surface (14, 15) whose surface structure is not congruent with that of the surface of the electrode so that a finite number of discrete engaging points is formed between the movable electrode and its engaging surfaces. Furthermore methods are described for manufacturing such a display device.

REFERENCES:
patent: 4178077 (1979-12-01), Te Velde
patent: 4420897 (1983-12-01), Castleberry
patent: 4519676 (1985-05-01), Te Velde
patent: 4584056 (1986-04-01), Perret et al.

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