OLED displays use organic materials that emit light when electricity is applied. OLEDs enable emissive, bright, thin, flexible and efficient displays. OLEDs are set to replace LCDs in all display applications - from small displays to large TV sets.
Samsung's Super-AMOLED displays are AMOLED displays with an integrated touch function. In a Super AMOLED display, a touch-sensor is placed over the display (on-cell). Super AMOLED displays have great visibility even in direct sunlight and are thinner than regular AMOLED displays with an external touch layer.
The "Super AMOLED Advanced" display was adopted in October 2011 by Motorola in their Droid RAZR smartphone - which had a 4.3" Super AMOLED Advanced display featuring qHD (960×540). This display brand name was never explained, and never used in another device.
Super AMOLED Advanced use PenTile
Super AMOLED Advanced displays feature a PenTile sub-pixel scheme. PenTile is Samsung's technology that shares sub-pixels between pixels, which allows them to provide higher-resolution displays, although at some quality loss of course (a visible PenTile pattern).
Samsung's Super AMOLED HD displays use PenTile - but they reach higher densities than in Motorola's display - for example the Galaxy Nexus reaches 1280x720 resolution on a 4.65" display. So the density is higher than in the Droid RAZR.