Samsung SuperAMOLED : weekend die-shot

Samsung's SuperAMOLED display from Galaxy S4 mini is supposed to have active matrix (i.e. control transistors are on substrate) and integrated touch sensor. Let's take a look:
It seems there are at least 2 levels of barely visible interconnect (ITO?).


With few pixels glowing:


Only pixels glowing:


Half-pitch and thinnest lines are 2.5 µm. Diagonal die size is 109 mm :-)