Power consumption of multiplexed liquid-crystal displays

Display power consumption is calculated as a function of the physical display parameters for a five-voltage, line-at-a-time drive scheme. It is found that at high multiplexing levels the power varies as the product of the number of columns and the square of the number of rows, assuming that the rows are strobed. Typical power for a small 128 character display multiplexed at 1/28 duty cycle is expected to be 140 µW.