For a general explanation, uses and history, see OLED. Passive matrix OLEDs appeared in cellphones and MP3 players in the 1990s, and active matrix OLED devices followed in the late 2000s (see AMOLED).

Among those devices and others are two kinds of OLED displays that are controlled in different ways, called active-matrix (AMOLED) and passive-matrix (PMOLED). An OLED screen includes a number of ...

The common type of display technology used in all modern LCD and OLED computer, TV and mobile device screens. Active matrix is sharper and has more contrast than less expensive passive matrix screens.