1, application place: TFT screen is passive display, which is mainly used for LCD TV, LCD computer monitor and other electronic products. LED screen is an active display, which is mainly used in shopping malls and various places, such as LED display screens on shop doors.
2. Principle: TFT screen displays various colors and images by controlling the angle of liquid crystal molecules in the alignment film through the illumination of backlight. The LED screen controls the lighting time of each LED tube by controlling the current, thus displaying various colors and images.