I’ve been playing with e-paper displays a bit, and all of them seem to have some magic power electronics that are not described on the web-sites. However I came across this German company called Plastic Logic that seems to be quite forthcoming.
They have a flexible tiny e-paper display and they show the schematics for driving them.
Single voltage power supply (1.7 … 3.6 V), on-chip regulator control for generating driving voltages (external booster circuit required)
Two of there displays seem like they might fit into a cuff, assuming I can figure out how to create a transparent cover. This might be the show stopper.
It appears that this can be interfaced directly to a uC with not extra stuff because it has an embedded “Ultrachip” processor