Learn in the textbookOutput Devices (Display and Printing)
DefinitionAn organic EL display (OLED) (有機ELディスプレイ) is a device that shows images using organic elements, one per pixel, that give off their own light when current flows.
ExplanationBecause each pixel glows on its own, no backlight is needed, and a pixel left unlit shows black as it is. Without a light source layer it is easier to make thin and light, and some products even have screens that bend.
AnalogyIt is like the lit windows of a building at night. Simply switching each room's light on or off makes a pattern appear on the building's face.
Memory hookEL stands for Electro Luminescence, light produced by electricity. The name itself tells you it makes its own light.