Analogue displays for electronic timepieces or meters
First Claim
1. An analogue display comprising in combination:
- a display panel;
address means for providing a set of voltage signals to operate the display panel; and
,selector means, capable of response to input data, for selecting voltage signals from the address means, and for applying these signals to the display panel to enable display of two indices on the display panel against an otically contrasting background;
wherein, the display panel includes;
two parallel substrates;
an electrically sensitive medium contained between the two substrates, the medium being capable of adopting simultaneously in different regions thereof each of two optical states, an ON state, and an OFF state, respectively, in response to different electrical fields developed thereacross;
a first set of electrodes arranged in a plurality of segments, each segment being divided into an inner and an outer portion, each portion being planar and having a plurality of joined digits, the digits of one portion being interposed alternate with and in between the digits of the other portion, the first set of electrodes being mounted on the inwardly facing surface of the first substrate, and connected to the selector means; and
a second set of electrodes having a configuration in which a single electrode is interposed between meandering electrodes in folds formed by the meandering electrodes to form collectively a modified meander structure, the second set of electrodes being mounted on the inwardly facing surface of the second substrate, and connected to the selector means;
the two sets of electrodes being registered one set over the other with alternate digits and alternate meander electrodes defining two subsets of selectable index positions each subset to display a different index; and
,the selector means being constructed to respond to input data and connected to the two sets of electrodes to drive the panel medium in the ON state at two different selected index positions simultaneously, the panel medium being in the OFF state at all other selectable index positions.
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Abstract
An analogue display with a panel having an electro-optic medium contained between two sets of electrodes. One set is arranged in a plurality of segments each divided into inner and outer portions. Each portion is planar and has a plurality of digits. The digits of one portion are interposed alternate with, and in between, the digits of the other. The other set has a planar meander configuration modified by an electrode interposed in its folds. The sets of electrodes when registered one over the other define two subsets of different selectable index positions. Selected alternating voltages are applied simultaneously to the electrodes maintaining the panel ON at two selected index positions and OFF elsewhere a dial shaped display area which is other than circular or arcuate, e.g. Preferably the voltages are selected from the set (+2V, +V, -V) of RMS magnitudes (2Vc, Vc, Vc) where Vc is equal to the threshold voltage of the panel. The panel may contain liquid crystal material, as medium, to perform as a dyed phase change, or twisted nematic effect device.
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Citations
16 Claims
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1. An analogue display comprising in combination:
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a display panel; address means for providing a set of voltage signals to operate the display panel; and
,selector means, capable of response to input data, for selecting voltage signals from the address means, and for applying these signals to the display panel to enable display of two indices on the display panel against an otically contrasting background;
wherein, the display panel includes;
two parallel substrates;an electrically sensitive medium contained between the two substrates, the medium being capable of adopting simultaneously in different regions thereof each of two optical states, an ON state, and an OFF state, respectively, in response to different electrical fields developed thereacross; a first set of electrodes arranged in a plurality of segments, each segment being divided into an inner and an outer portion, each portion being planar and having a plurality of joined digits, the digits of one portion being interposed alternate with and in between the digits of the other portion, the first set of electrodes being mounted on the inwardly facing surface of the first substrate, and connected to the selector means; and a second set of electrodes having a configuration in which a single electrode is interposed between meandering electrodes in folds formed by the meandering electrodes to form collectively a modified meander structure, the second set of electrodes being mounted on the inwardly facing surface of the second substrate, and connected to the selector means; the two sets of electrodes being registered one set over the other with alternate digits and alternate meander electrodes defining two subsets of selectable index positions each subset to display a different index; and
,the selector means being constructed to respond to input data and connected to the two sets of electrodes to drive the panel medium in the ON state at two different selected index positions simultaneously, the panel medium being in the OFF state at all other selectable index positions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An analogue display comprising in combination:
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a display panel; address means for providing a set of voltage signals to operate the display panel; a data source; and
,selector means, responsive to the data source, for selecting voltage signals from the address means, and, for applying these signals to the display panel to enable display of two indices on the display panel against an optically contrasting background;
wherein, the display panel includes;two parallel substrates; an electrically sensitive medium contained between the two substrates, the medium being capable of adopting simultaneously in different regions thereof each of two optical states, an ON state, and, an OFF state, respectively, in response to different electrical field developed thereacross; a first set of electrodes arranged in a plurality of segments, each segment being divided into an inner and an outer portion, each portion being planar and having a plurality of formed digits, the digits of one portion being interposed alternate with and in between the digits of the other portion, the first set of electrodes being mounted on the inwardly facing surface of the first substrate, and connected to the selector means; and
,a second set of electrodes having a configuration in which a single electrode is interposed between meandering electrodes in folds formed by the meandering electrodes to form collectively a modified meander structure, the second set of electrodes being mounted on the inwardly facing surface of the second substrate, and connected to the selector means; the two sets of electrodes being registered one set over the other with alternate digits and alternate meander electrodes defining two subsets of selectable index positions each subset to display a different index; and
,the selector means being constructed to respond to input data and connected to the two set of electrodes to drive the panel medium in the ON state at two different selected index positions simultaneously, the panel medium being in the OFF state at all other selectable index positions. - View Dependent Claims (15, 16)
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Specification