Display device

A display device comprising:

• a display having a display surface and configured to display an image;
• a detector capable of detecting at least three touch positions each on the basis of a touch on the display surface by a detection target, the detector including a touch sensor;
• and
• a controller configured to control the display and the detector, the controller including a central processing unit, wherein
• the controller determines whether or not a pinch operation is performed on the basis of whether or not a distance between two touch positions touched last by the detection target is changed,
• when determining that the pinch operation is performed, the controller performs zoom-in processing or zoom-out processing on the image using a touch position touched immediately before the last touched two touch positions as a reference point,
• the controller determines whether or not a first period is not longer than a threshold period, the first period being a period from a time when a touch on the touch position touched immediately before the last touched two touch positions has been detected to a time when it has been determined that the pinch operation is performed,
• when the controller determines that the first period is not longer than the threshold period, the zoom-in processing or the zoom-out processing is performed on the image using the touch position touched immediately before the last touched two touch positions as the reference point, and
• when the controller determines that the first period is longer than the threshold period, the zoom-in processing or the zoom-out processing is performed on the image using a position where the pinch operation is performed as the reference point.