Display and method for driving the display

A display, comprising:

• an electro-optical material arranged between first and second planes facing each other;
• a first substrate arranged on the first plane and including a conductor that affords an electrical signal to the electro-optical material;
• a second substrate arranged on the second plane and including a first electrically conductive film that affords an electrical signal to the electro-optical material;
• a second electrically conductive film arranged outside an area sandwiched between a plane of the first substrate, on which the electro-optical material is not arranged, and a plane of the second substrate, on which the electro-optical material is not arranged;
• a current detection circuit that detects a current on the second electrically conductive film;
• a control circuit that, during a first time period the current is detected by the current detection circuit, applies a voltage with substantially the same amplitude and phase as that applied to the second electrically conductive film to one of the conductor extending from inside to outside of a viewing area and the first electrically conductive film, and sets the other in a floating state, or applies a voltage with substantially the same amplitude and phase as that applied to the second electrically conductive film to both the conductor extending from inside to outside of a viewing area and the first electrically conductive film;
• and
• a detecting unit that detects, based on the current detected by the current detection circuit, whether or not touch has been made by a finger or a pointer and where the touch has been made, wherein
• the floating means that an impedance value between the conductor extending from inside to outside of a viewing area and a voltage source connected thereto during the first time period is higher than that during a second time period other than the first time period, or an impedance value between the first electrically conductive film and a voltage source connected thereto during the first time period is higher than that during the second time period.