Importance

Loading Importance Indicators...

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.

Loading the Abstract Image...

First Claim