Using Displays in Raspberry Pi Projects: Sample Chapter: Organic Light Emitting Diode Displays (OLED)

摘要

An organic light-emitting diode is an LED-based display in which the emissive electroluminescent layer is a film of organic compound that emits light when an electric current is present. The organic layer is situated between two electrodes where at least one is transparent. OLED displays are used in many commercial applications, such as television screens, computer screens, smartphones, game consoles, and other digital displays. OLEDs can be driven with either passive-matrix (PMOLED) or active-matrix (AMOLED) controllers. Typically, in PMOLED type displays, each row and line is controlled sequentially, one by one. In AMOLED type displays, a thin-film transistor backplane is used to directly access and control each individual pixel on or off.