Display device for a counting mechanism, such as a clock or watch
AssigneeU.S. Philips Corporation
InventorArie Slob
Life of this patent
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Abstract
A display device for a counting mechanism, for example, a clock or a watch. The electrodes for the counting positions, for example, hours, minutes and seconds, are arranged in concentric rings. The electrodes are divided per ring into groups which are interconnected in a special manner. The counter electrodes are arranged in one ring of which each electrode cooperates with one group of each above-mentioned ring of electrodes. The number of external connections of the display device is thus highly restricted.
Claims6
A display device of the dial plate type comprising a first system of electrodes and a second system of electrodes, a display medium between said first and second systems of electrodes, said first system of electrodes comprising at least two concentric rings of electrodes, each ring for displaying one quantity and comprising one electrode for each counting position to be displayed, said second system of electrodes comprising one ring of electrodes of which each electrode is in operative arrangement with all rings of the first system, the electrodes of each ring of said first system being divided into groups of adjacent electrodes having the same number per group, each electrode of a group being interconnected to one electrode of each other group belonging to the same ring, all electrodes of one group being in operative arrangement with only one electrode of the second system.
Dependencies are inferred from the claim text.