Originally Posted by Tokyo Heat
wrong samsung's LED BLU technology uses blue LEDs with a red and green
phosphor coating to achieve white. this method is less power consuming and more cost effective than the tri-color led method.
I sure dont hope that, but maybe you are right. The cost would be lower but the color accuracy will be way off, and that will be worse with the time because off uneven phosphor degradation.
Maybe Samsung "just" used some RGB Leds were the green and red lights dont have the ideal colors to fill the whole NTSC color palette or the color palette is slightly off.
If we look at Sharps prototype they sure use some RRGGBB LEDs where they use two LEDs for every color and the LEDs for every color dont have the same waveleght, this will give a much bigger color palette = 150% NTSC. And much more precise colors.
actually the white LED samsung method can get smaller than tri-color leds because you have just 1 led verses 3 to focus on. also its one blue led with red and green phosphers. this method cuts cost and power consumption because to get the same effect you'd have to manufactor 3x the leds to form one white light emitter and 3 leds consume more power than 1.
It wont do any difference how small the LEDs can be made, today you can make a LED die so small that you cant see it with your bare eye, and the white LEDs need a thick phosphor layer for the waveleght conversion to be effective enough.
The white leds wont have less power consumption, because some of the light will be lost in the phosphor and ideal you have 3 leds in a RGB LEDs which all need to produce 3 times less light to produce the same amount as the white LED.