Samsung tricked us with its so called AMOLED screens. Actually most humans are sensitive to the colour Green. Sensitive, in the sense that human eyes can notice it more easily than other colours.
Samsung has a patented technology called the PenTile Matrix. PenTile configurations in the display makes the green pixels shrunk down in size, since the human eye can tell it part more easily than other colours. How does making smaller pixels benefit Samsung, well for starters they are easier to manufacture, cost cheaper and importantly, most people don’t even notice the difference. PenTile Matrix has allowed Samsung to increase the production yield of OLED display. A typical RBG stripe has three subpixels per pixel, where as the PenTile Matrix uses only two subpixels per pixel. That is a 33% reduction in pixels. Fewer pixels results in a higher yield.
According to Samsung the PenTile Matrix does not effect the screen quality. However if you compare AMOLED with Super LCD screens, the lcd screen would be sharper and have accurate colours.
Now Samsung is trying to blow our minds even further with their Super AMOLED Plus screens, which seems to have 50% more subpixels per pixel and displays the content on screen without any PenPixel Matrix trickery.
Compared to the first generation of AMOLED screens the advantages of Super AMOLED Plus screens are:
20% brighter screen
80% less sunlight reflection
20% reduced power consumption
The Samsung Galaxy S2 and Samsung Infuse 4G for AT&T are the only two announced phones which are going to use Super AMOLED Plus screens. So if the Galaxy S screen made you go wow, you can imagine what sort of a "wow" factor, the Galaxy S 2 and Infuse 4G would give.