Adhesive PDLC film can be installed on window panes and glass walls to be used as a projection screen. Multiple projection systems can be connected to create one large high-quality screen. The screen makes it possible to project digital images freely when needed. For example, it can be used by stores to advertise and drive sales. The screen in its clear state during the day acts as a window to keep the store visible. At night, it becomes a projection screen that advertises the store or product.