1. A display apparatus capable of detecting that a predetermined place of a display screen has been pointed by a human hand or a pointing member, the display apparatus comprising: display elements formed near intersections of signal lines and scanning lines respectively arranged in vertical and horizontal directions; image pickup units provided so as to be respectively associated with the display elements, which pick up incident light in a predetermined range in a state in which a predetermined display image is displayed on the display screen by the display elements; and a pointer detection portion which detects a portion having high correlation with a display image at image pickup time from the picked-up image, as a position pointed by a hand or a pointing member on the display screen.