How Stuffs Work? AMOLED



1. AMOLED (active-matrix organic light-emitting diode) is a display technology that generate light upon electrical activation that have been deposited or integrated onto a thin film transistor (TFT) array, which functions as a series of switches to control the current flowing to each individual pixel. Two primary TFT backplane technologies, namely polycrystalline silicon (poly-Si) and amorphous silicon (a-Si), are used today in AMOLEDs. These technologies help fabricating flexible plastic AMOLED displays - the backbone of smartphones.

2. Super-AMOLED is a variant from AMOLED (marketed by Samsung, soon being industry standard on all smartphones) mainly for the layer that detects touch - is integrated into the screen rather than being overlaid on top. Super-AMOLED advantages are brighter screens, less sunlight reflection and reduced power consumption.

3. Super-AMOLED Plus, first introduced with the SGS-II and Samsung Droid Charge smartphones, is a further development where the PenTile RGBG pixel matrix (2 subpixels) is replaced with Samsung's "Real Stripe" (3 subpixels) RGB subpixel arrangement. This goes from 8 to 12 subpixels per group, resulting in finer details. The screen technology is also brighter, thinner with AMOLED Plus displays being 18% more energy efficient than the previous Super AMOLEDs.

4. HD Super-AMOLED is a new S-AMOLED display from Samsung. The 1st device to use it was the Galaxy Note. The 2nd device to use it is Samsung's Galaxy Nexus phone - with a 4.65" display with 1280x720 resolution. The higher resolution and dpi were made possible due to a change in materials and new manufacturing process, though still using shadow mask (or fine metal mask [FMM]) technology. However this required a change back to pentile RGBG subpixels.

5. HD Super-AMOLED Plus. Samsung is expected to introduce a new screen using "Real Stripe" RGB subpixels with the move to the laser-induced thermal imaging (LITI) process. The change to LITI is also said to be an important step toward commercializing OLED TVs.

NOTE:
-AMOLED fabricators include AU Optronics and Samsung.
-Samsung has marketed their version as Super-AMOLED.
-Clear Black Display (CBD) is an AMOLED display with a polarized filter on top.
-DuPont used computational fluid dynamics (CFD) to optimize a new solution for AMOLEDs.
-DuPont's technology is cost and performance competitive for large display sizes.
-Though specs r yet unclear, it is expected that the Lumia 900 uses a Super-AMOLED Plus screen.

Qorax