A method and apparatus for affixing a functional film on a panel surface having a curvature in three dimensional directions with at least one pushing roller. A pressing roller which is elastic has a shaft inside the roller. The shaft has a varied diameter of concave curvature with the largest portions at the ends of the shaft. The inner portion of the elastic roller is separated from the shaft by a clearance which is greater in the middle of the shaft. When the roller is pressed upon a three dimensional panel, the elastic roller is deformed into the clearance area and against the shaft. This permits even pressure to be applied across the panel. In a second embodiment, a main pushing roller unit may travel along the direction while pushing the functional film against the panel surface, followed by the two follow-up displacement pushing roller units which are displayed in response to the travel of the main pushing roller unit while pushing the functional film against the panel surface.