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Schematic of an active-matrix OLED display. An AMOLED display consists of an active matrix of OLED pixels generating light (luminescence) 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.
AMOLED displays also contain a TFT layer for active-matrix pixel addressing of individual organic light-emitting diodes. The most beneficial aspect of TFT technology is its use of a separate transistor for each pixel on the display. Because each transistor is small, the amount of charge needed to control it is also small.
Major technologies are CRT, LCD and its derivatives (Quantum dot display, LED backlit LCD, WLCD, OLCD), Plasma, and OLED and its derivatives (Transparent OLED, PMOLED, AMOLED). An emerging technology is Micro LED. Cancelled and now obsolete technologies are SED and FED.
The following table compares cathode-ray tube (CRT), liquid-crystal display (LCD), plasma and organic light-emitting diode (OLED) display device technologies. These are the most often used technologies for television and computer displays.
As of 2019, low-temperature polycrystalline silicon (LTPS) – TFT is widely used for commercial AMOLED displays due to its superior current handling capacity over amorphous silicon (a-Si) TFTs. [113] LTPS-TFT has variation of the performance in a display, so various compensation circuits have been reported. [114]
AMOLED 2560 × 1440 5.2 in (130 mm) 570 Microsoft: Lumia 950 XL: November 2015: Windows 10 Mobile AMOLED 2560 × 1440 5.7 in (140 mm) 518 Motorola: Droid Turbo: October 2014: Android 4.4 AMOLED 2560 × 1440 5.2 in (130 mm) 570 Motorola: Nexus 6: November 2014: Android 5.0 AMOLED 2560 × 1440 5.96 in (151 mm) 493 Motorola: Moto X Style ...
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TFT 120,000 [55] BOE Hefei China gen 8.5 TFT BOE Hefei China gen 6 TFT BOE Beijing China [51] gen 5 TFT BOE Ordos China [56] gen 5.5 LTPS BOE Beijing China [51] gen 8.5 TFT BOE Chengdu China [51] gen 4.5 TFT BOE Fuzhou China [51] gen 8.5 TFT BOE Chongqing China gen 8.5 TFT BOE Fuqin China gen 8.5 TFT TCL: Shenzhen China [57] [58] 9 2019(planned ...