Patent
1981-09-01
1984-02-07
Corbin, John K.
350336, G02F 113
Patent
active
044299559
ABSTRACT:
A passive electro-optical display cell comprising, on the internal face of each of its plates, at least one of which is transparent, sets of control electrodes and sets of screen electrodes, the control electrodes and the screen electrodes being separated by an insulating layer. The screen electrodes and the insulating layers have apertures therein facing the control electrodes. In order to reduce the number of conducting tracks, the cell is controlled by multiplexing. This type of control is made possible by virtue of the particular combination of the control electrodes and the screen electrodes. The control and screen electrodes of either plate will select two segments for display, but a selection between the two segments is made possible because they face different screen electrodes of the other plate. Such a cell makes it possible to display more data than a normal cell and may be used in an electronic watch which has a large number of functions.
REFERENCES:
patent: 3787834 (1974-01-01), Elliott
patent: 4277786 (1981-07-01), Waldron
Kmetz, "Matrix Addressing of Non-Emissive Displays", Non-Emissive Electro Optic Displays (pp. 261-289), 1975.
Asulab S.A.
Corbin John K.
Lewis David
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