Sony's Triluminos tech. is the same as samsung's quantom dot? if that is true then sony is way ahead for 3yrs.?
They're the same. But it's not true that Sony is ahead of Samsung or LG when it comes to display tech (at least in terms of actual physical hardware). Samsung actually had QD array displays (which is far higher tech than any QD LED backlighting, though ultra-expensive) since 2011. LG had RGB backlit displays on professional displays since 2008 (this is superior to QD LED backlighting, but is costlier). Both could have made QD LED backit LCD TVs years ago if they really wanted to. They were too preoccupied with pushing OLED to production, so they didn't bother with QD LED backlighting. Both are now having difficulty bringing down OLED costs though, so they are now pushing interim products in the form of QD LED backlit LCD TVs.
Sony's Triluminos screens mostly come from AUO utilizing QD Vision optics. They do not own the technology. They only decided to use QD Vision's optics for their 2013 flagship and used a trademark for it (Triluminos). LG is using the same QD Vision optics now on their QD LED models (since this is cheaper than using their own RGB LED tech, and is better than their cheaper multi-chromatic phosphor tech). Samsung sports its in-house QD optics tech for now (which is what's in their current SUHD TVs), but will move on to licensed optics from Nanosys on upcoming products.
Samsung and LG are vertically integrated companies. They make most of what they use. Sony can no longer afford that kind of setup, and is now largely dependent on technology partners and suppliers.