"very basic of every modern computer display".......
There are very few displays that actually use RGB diodes. The displays that do are extremely expensive 10bit professional displays. Current LED displays simply means that the lamp lighting behind the LCD's is replaced with LED. The LED lighting is brighter, and whiter allowing for better colors. There is still an LCD panel that actually creates the color, not the LED's. These LCD's are given by TN, IPS, VA, AMVA and other LCD panel technologies, but are in no way using colored diodes.