Organic Light-Emitting Diode (OLED) displays are known for their ability to produce true blacks and high contrast ratios. This is because OLED pixels emit their own light, which can be completely turned off to achieve a true black, unlike Liquid Crystal Displays (LCDs) that rely on a backlight that cannot be turned off for individual pixels. This advantage allows OLED displays to have superior contrast ratios compared to other types, such as In-Plane Switching (IPS) or Twisted Nematic (TN) displays that are types of LCDs and cannot achieve the same level of black since they use a constant backlight.