Norhtrop Grumman Corporation

Daniel J Toffolo

Thomas J Rebeschi

Mohan L Kapoor

Peter O Shanaghan

A method and apparatus for providing a driver circuit for an electroluminescent display panel comprising a row driver including positive row drive elements and negative row drive elements, a first power lead with a first predetermined voltage V.sub.neg connected in series through a first switch connection to a first node, the first node connected to a first current limiter to the negative row drive elements, a second current limiter operably connected between a first fixed potential to a second node, the second node connected to the positive row drive elements, a third current limiter connected between the negative row drive element and the second fixed potential, a second power lead with a second predetermined voltage V.sub.pos connected in parallel to the first node through a second switch connection and a power storage device connected between the first and second nodes, wherein the voltage across the positive and negative row drive elements is selectable, via predetermined operation of the first and second switch connections, between a) V.sub.neg and b) the difference between V.sub.pos and V.sub.neg.

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Wilton, CT, United States of America

Daniel J Toffolo