OLED, or Organic Light Emitting Diodes, is a display technology that uses organic compounds to emit light when an electric current is applied. This allows for thinner screens with vibrant colors and deeper blacks compared to traditional LCD displays. One of the key advantages of OLED technology is its ability to produce true black levels, as individual pixels can be turned off completely. This results in higher contrast ratios and improved energy efficiency, making OLED displays popular in high-end televisions and smartphones.