A display device comprising: a display means including a backlight that can be partially illuminated; a touch panel disposed on the display means, configured to output coordinate information of a contact point; and a control means configured to set a region around a contact point as an illumination region when contact with the touch panel is made at one point, and to set a region interposed between a first contact point and a second contact point as the illumination region when contact with the touch panel is made at two points, based on the coordinate information of the contact point, wherein the control means is configured to determine whether coordinate information of the second contact point where second contact is made is input within a first specified period of time after coordinate information of the first contact point where first contact is made is input, and when the coordinate information of the second contact point is input within the first specified period of time, set a region interposed between the first contact point and the second contact point as the illumination region, and when the coordinate information of the second contact point is not input within the specified period of time, sets the region around the first contact point as the illumination region, wherein the control means is configured to determine whether a third contact point is within the region, and when the third contact point is within the region, the control means is configured to move display information displayed near the third contact point within the region based on a contact operation from the third contact point, and when the third contact point is outside the region, the control means is configured to change brightness in the region based on a contact operation from the third contact point, and wherein the control means is configured to determine whether coordinate information of the third contact point is input within a second specified period of time after coordinate information of the second contact point is input, and when the coordinate information of the third contact point is input within the second specified period of time, the control means is configured to determine whether the third contact point is within the region interposed between the first contact point and the second contact point, and when the coordinate information of the third contact point is not input within the second specified period of time, the control means is configured to set the region interposed between the first contact point and the second contact point as the illumination region. a display means including a backlight that can be partially illuminated; a touch panel disposed on the display means, configured to output coordinate information of a contact point; and a control means configured to set a region around a contact point as an illumination region when contact with the touch panel is made at one point, and to set a region interposed between a first contact point and a second contact point as the illumination region when contact with the touch panel is made at two points, based on the coordinate information of the contact point, wherein the control means is configured to determine whether coordinate information of the second contact point where second contact is made is input within a first specified period of time after coordinate information of the first contact point where first contact is made is input, and when the coordinate information of the second contact point is input within the first specified period of time, set a region interposed between the first contact point and the second contact point as the illumination region, and when the coordinate information of the second contact point is not input within the specified period of time, sets the region around the first contact point as the illumination region, wherein the control means is configured to determine whether a third contact point is within the region, and when the third contact point is within the region, the control means is configured to move display information displayed near the third contact point within the region based on a contact operation from the third contact point, and when the third contact point is outside the region, the control means is configured to change brightness in the region based on a contact operation from the third contact point, and wherein the control means is configured to determine whether coordinate information of the third contact point is input within a second specified period of time after coordinate information of the second contact point is input, and when the coordinate information of the third contact point is input within the second specified period of time, the control means is configured to determine whether the third contact point is within the region interposed between the first contact point and the second contact point, and when the coordinate information of the third contact point is not input within the second specified period of time, the control means is configured to set the region interposed between the first contact point and the second contact point as the illumination region.