One thing's for sure -- monochrome electronic ink displays are not the future of e-readers.

ENGADGET: The e-Reader story of CES 2010

Technologies such as electronic ink, 3D controllers, flexible displays, voice recognition and solid-state mass storage are rapidly approaching mass market commercialization price points.

ENGADGET: Switched On: Pondering PC 3.0

This purchase shows E Ink's strong commitment to electronic paper displays.

ENGADGET: E Ink acquires SiPix, may dominate e-paper universe

Electrophoretic displays work in a different way, using a form of electronic ink that has been under development since the 1970s.

ECONOMIST: Electronic screens as thin as paper are coming soon