Remember SED? It's a display technology that promised to be as thin as LCD and as beautiful as CRT. Dropping jaws during 2006 press demonstrations, SED has since been buried by lawsuits. Now it's back, maybe.
Applied Nanotech filed a suit with Canon back in 2005, alleging that while their SED tech was legally licensed to Canon, that license did not cover a Canon/Toshiba partnership. Canon lost the suit, won the appeal and eventually bought Toshiba's stake in SED.