The liquid crystal molecules in an LCD screen will fluoresce under ultraviolet light, and the use of an ultraviolet flashlight can help identify the presence and location of the LCD screen. The UV flashlight is capable of emitting ultraviolet light, causing the LCD to show a special fluorescent effect in dark environments, thus making it easier for recyclers to accurately locate and dispose of the LCD. These flashlights typically have UV LEDs that provide sufficient UV light intensity, but are also portable and easy to maneuver, making recycling more efficient and accurate.