Hi
I'm working on a project in which I need to add a 2 digit LCD (old style reflective type)
Normally one would drive the display common with a square wave and drive the segments seperately with another square wave that is either in-phase or out-of-phase depending upon if the segment must be On/Off.
LCD manufactors state a maximum of approx. 50mW DC applied to the segment to avoid degradation of the segment. But I was wondering if one could ground the common pin and drive the segment with a square wave through an ac coupling capacitor. Is there some reason why this will not work? (so in this case I don't need to worry about precisely 50% dutycycle)
Thanks
Klaus