A Clip-On Board in advertising refers to a specific type of light box or display frame designed for quick, easy, and frequent changing of graphic posters. It is a modern, flexible, and high-impact solution widely used in retail, hospitality, and corporate environments. The key feature is the mechanism that allows the user to "clip" or "snap" open the edges of the frame to access the advertisement inside. The most popular and effective version is the LED Clip-On Board.