The present invention discloses a liquid crystal display apparatus which is capable of preventing picture quality deterioration caused by a shielding treatment and executing superposition videographic display with high level. The liquid crystal display apparatus shields scanning driving signals of the main image data according to a specified scaling ratio, then the main image data is consistent with the effective display line number of a liquid crystal display component; the main image is in superposition with the subimages whose display line number is different from that of the main image and is displayed through a liquid crystal component 46; and a subimage data creating unit (a subimage data creating circuit 42) used for shielding the scanning driving signals of the main image data according to the specified scaling ratio and synchronously generating invalid data added to the subimage data is arranged.