OLED display
OLED displays are arrays of Organic Light Emitting Diodes (OLED) in which the OLEDs with the three primary colorsred, green and blue are arranged in a matrix and emit light. Corresponding matrices can be passive or active and are called Passive Matrix OLED( PMOLED) or Active Matrix OLED( AMOLED).
Since OLEDs are self-luminous, the difference in the two processes lies solely in the technical data. A backlight is not required by either.
PMOLED displays have a simpler design than AMOLEDs. They operate on supply voltages of 2.8 V to 3.6 V, have good contrast, short response times and are suitable for small screens and text displays, for PDAs, MP3 players and other small mobile devices.
AMOLED displays are characterized by high brightness and very high contrast, which is over 10,000 : 1. For HDR displays, High Dynamic Range (HDR), the luminance specified by the UHD Alliance for the deepest black must not exceed 0.0005 nits. The brightest value has a luminance of 10,000 nits. Further advantages of OLED displays are the large viewing angle of about 170 °, the extremely short response time of less than 10 µs, which corresponds to a refresh rate of 100 kHz, the low power consumption and, last but not least, the wide temperature range in which OLED displays can be used. All of the above-mentioned characteristics exceed those of LCD displays.
In addition, OLED displays display true black, have better power utilization, are extremely flat and very light, and do not require backlighting. They can also be made of transparent OLEDs( TOLED) and be completely transparent. AMOLEDs can be used in smartphones and cell phones, in navigation devices, notebooks, monitors, touchscreens and TV sets.