Lantern is a dynamic display mode, which can continuously display words, pictures or other things in a certain direction and realize it in a circular way. It's a bit like refreshing the graphics every second when the car is driving, which makes people look like they are rolling. If you scroll the characters, it will display small images in a loop like a courier.
The principle is to store each frame of an image in the memory through image scrolling, and then display the next frame on the screen every time, thus forming the effect of lanterns.