Computer Hardware
OLED
Definition
An organic light-emitting diode (OLED) is a light-emitting diode (LED) in which the emissive electroluminescent layer is a film of organic compound that emits light in response to an electric current.
Why It Matters
OLED is a display technology that offers significant advantages over traditional LCD. Because each pixel produces its own light, OLED displays can achieve true black levels (by simply turning the pixel off), resulting in an "infinite" contrast ratio, vibrant colors, and fast response times.
Contextual Example
High-end TVs and smartphones often use OLED screens. The perfect blacks make them ideal for watching movies in a dark room, and their fast pixel response is great for gaming.
Common Misunderstandings
- Unlike LCD displays, OLEDs do not require a backlight.
- A potential downside of OLED technology is "burn-in," where a static image left on the screen for too long can leave a permanent ghost of itself.