here's an excellent read from 2011 on the subject
http://www.computerworld.com/s/artic..._s_the_holdup_
LG was producing flexible eink displays with a metal foil tft.
http://www.hitechreview.com/uploads/...le-e-paper.jpg
you may remember hearing about the device they were supposed to go in, the Skiff reader
http://www.engadget.com/2010/01/04/s...-a-sprint-sto/