Electronic display suitable for polar coordinate representations
First Claim
Patent Images
1. An electronic display including:
- an electrically responsive medium disposed between first and second substrates, each substrate bearing electrodes adjacent to the electrically responsive medium, andmeans for energizing said electrodes to produce a response from the medium,wherein the first substrate bears concentric non-intersecting spiral first electrodes each extending from a central region of the display and covering 360°
of arc, each first electrode being connected to a respective connecting means arranged to relay address signals thereto without overlapping other first electrodes, and the second substrate bears a pattern of second electrodes arranged to cooperate with the first electrodes such that designation of any pair of first and second electrodes addresses a respective region of the electrically responsive medium lying between that pair of first and second electrodes.
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Abstract
A polar coordinate display of full 360° arc comprises an electrically responsive medium between two electrode bearing substrates. One set of electrodes is configured as a number of concentric spirals, allowing connection at the display periphery. The other set of electrodes may be radial or counter spiral. The display may be addressed using a set of isogonal signals--for example psuedo-random binary sequence coded signals.
28 Citations
8 Claims
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1. An electronic display including:
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an electrically responsive medium disposed between first and second substrates, each substrate bearing electrodes adjacent to the electrically responsive medium, and means for energizing said electrodes to produce a response from the medium, wherein the first substrate bears concentric non-intersecting spiral first electrodes each extending from a central region of the display and covering 360°
of arc, each first electrode being connected to a respective connecting means arranged to relay address signals thereto without overlapping other first electrodes, and the second substrate bears a pattern of second electrodes arranged to cooperate with the first electrodes such that designation of any pair of first and second electrodes addresses a respective region of the electrically responsive medium lying between that pair of first and second electrodes. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An electronic display including:
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an electrically responsive medium disposed between first and second electrode bearing substrates, and means for energizing said electrodes to produce a response from the medium, wherein the first substrate bears concentric non-intersecting spiral first electrodes each extending from a central region of the display and covering 360°
of arc, and the second substrate bears a pattern of second electrodes arranged to cooperate with the first electrodes such that designation of any pair of first and second electrodes addresses a respective region of the electrically responsive medium lying between that pair of first and second electrodes,said second electrodes being concentric spirals of the opposite hand to that of the first electrodes, and each of said second electrodes extending over 360°
of arc from said central region of the display. - View Dependent Claims (8)
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Specification