Those are pretty cool ideas!
But I think the thing with OLEDs that is even cooler is that you can print it using inkjet technologies onto flexible surfaces. Like paper. Or clothing. It’s also much easier to make large OLED displays than large LCD displays.
Once they get over the technology hurdles, OLEDs *are* your roll up monitor/moving paper. Or your cheap wall sized flat-panel. Or your t-shirt with a video display in it. Much cooler than a keyboard with changeable keys 🙂 (This message is brought to you by Mike, walking talking spokesperson of the OLED industry.)
(Although I *want* that keyboard!) (If only to program it to make the keyboard talk to you.)
(And after checking Wikipedia I was wrong. They started becoming cheap like 2003, so more like 3 years ago.)