In a screen printing apparatus, a squeegee is slid on a mask contacting a board to print paste onto the board via pattern holes formed in the mask. A circuit is further provided which causes the lighting device to repeat an illumination period in which only a light of a predetermined color of the lights of the plurality of colors is used, for each of the colors in order, and drives the liquid crystal display panel on an FSC basis in synchronization with the illumination period for each of the colors. The holes may serve as pattern recognition marks for placement of one or more optical components onto the lead frame and second frame.