No, not really? I worked directly with Dupont on developing a light source for fiber optic transmissions over twenty years ago, before the super-bright LED's and did come up with efficient light sources in sub-miniature halogen. The only problem, and it's always the problem is that super-bright LED life is drastically shortened. The TV displays which are using LED's as the backlighting have a shorter life than the standard florescent. Not to mention, they are uneven.
OLED is the future and SONY already has a product on the market, albeit a small display.
BTW -- read the TOS. You cannot SPAM this site. If you have a private message, use that feature.