Voltage-selection waveforms of the conventional type, 2:1 or 3:1, are used in the vast majority of refreshed, matrix-addressed displays. This paper questions this rationale and shows the derivation of alternative selection waveforms matched to the display device electrooptical characteristic. The derivation is based on the concept that the time-averaged luminance values of selected and unselected elements is more important than their Instantaneous values. We find that the amplitude of the strobe and data signals can be chosen to produce either a larger number of scanned lines than is possible with 2:1 or 3:1 selection, or to reduce the drive power for a display of specified size and contrast. Copyright © 1975 by The Institute of Electrical and Electronics Engineers. Inc.