Disclosed herein is a display apparatus including: a display panel having a display function and a light-receiving/imaging function; a first image processing section configured to generate a detection signal that indicates whether a to-be-detected object has been detected based on a result of first image processing performed on an image taken by the light-receiving/imaging function; a second image processing section configured to perform second image processing on the image processed by the first image processing section, the second image processing having a heavier processing load than the first image processing; and a control section configured to control an operation of the second image processing section in accordance with the detection signal generated by the first image processing section, and, when it is determined that the processing by the second image processing section is not necessary, control the second image processing section to enter a sleep state.