Multi-layer display device with nonactive display element groups

Details Multi-layer display device with nonactive display element groups Multi-layer display device with nonactive display element groups

Filed on

1980-09-16

Date issued

1984-04-17

Examiner

Corbin, John K.

Other Related Categories

350333, 350335, G02F 1133

Type

Patent

Status

active

Patent number

044430620

Description

ABSTRACT:
In a multi-layer display device such as a liquid crystal display, each of a plurality of sets of display elements is defined by a corresponding common electrode and a plurality of segment electrodes. Segment electrodes of sets of display elements which will not be activated simultaneously are connected together, with at least one of these sets being maintained in a deactivated state by means of a special drive signal applied to the corresponding common electrode. The level of time-sharing which must be utilized for driving the various common electrodes, for a given number of external connections to the segment electrodes, can thereby be reduced, or the overall number of connections made to the display device can be substantially reduced.

REFERENCES:
patent: 3738099 (1973-06-01), Tanaka
patent: 3751137 (1973-08-01), Fritzgibbons et al.
patent: 3771855 (1973-11-01), Burns
patent: 3848247 (1974-11-01), Sherr
patent: 3981560 (1976-09-01), Heymen et al.
patent: 4142182 (1979-02-01), Kmetz
Buchoff, "Conductive Elastomers Make Small, Flexible Contacts", Electronics, Sep. 19, 1974, pp. 122-125.

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