Horology: time measuring systems or devices – Displays or display device details – Optical
Patent
1981-02-18
1983-05-10
Miska, Vit W.
Horology: time measuring systems or devices
Displays or display device details
Optical
G04C 1702
Patent
active
043826962
ABSTRACT:
The device displays an hour hand and a minute hand on a twelve hour dial and comprises a layer of electro-optical material having on one face an inner ring of 10 sectorial plate electrodes B.sub.1 etc, each subtending an angle of 36.degree. and a corresponding outer ring of 10 plate electrodes B.sub.11 etc. On the other face there are sixty radial segments electrodes arranged in ten groups of six segments. Each group is opposed to a respective one of the ten plates. The segments are connected in six meandering circuits M.sub.1 to M.sub.6 so that, in proceeding one way round the dial, the segments of the said groups pertaining to the circuits M.sub.1 to M.sub.6 and then to the circuits M.sub.6 to M.sub.1 and so on in alternation round the dial. As can be seen from the steady lines demarcating the plate electrodes, these electrodes are assymetrical relative to the 12 o'clock axis of the dial so that there is a boundary between two adjacent plates in each ring angularly offset from that axis by a whole number of the segments, namely one segment as illustrated.
REFERENCES:
patent: 4209974 (1980-07-01), Noble
patent: 4254488 (1981-03-01), Ojima et al.
patent: 4255806 (1981-03-01), Fahrenschon et al.
Kumar Niraj
Varney John
Ebauches Electroniques S.A.
Miska Vit W.
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