Display device and input device

An input device comprising:

• a substrate;
• a touch detection surface;
• a plurality of first electrodes overlapping the substrate when seen in a plan view;
• at least one second electrode overlapping the substrate when seen in a plan view;
• and
• a touch detection circuit configured to perform a first operation so as to detect proximity or contact of an object to the touch detection surface, and a second operation so as to detect a position of the object brought in proximity to or into contact with the touch detection surface,
• wherein the proximity or the contact of the object is detected on a basis of capacitance charged at the second electrode, and is not detected on a basis of capacitance charged at each of the first electrode in a first mode,
• the position of the object is detected on a basis of capacitance charged at each of the first electrodes, and is not detected on a basis of capacitance charged at the second electrode in a second mode,
• when the proximity or the contact of the object is not detected during a predetermined period in the first mode, the touch detection circuit performs the first operation after the predetermined period, and
• the first mode is switched to the second mode when the proximity or the contact of the object is detected in the first mode.

An input device comprising:

• a substrate;
• a touch detection surface;
• a plurality of first electrodes overlapping the substrate when seen in a plan view;
• at least one second electrode overlapping the substrate when seen in a plan view;
• and
• a touch detection circuit configured to perform a first operation so as to detect proximity or contact of an object to the touch detection surface, and a second operation so as to detect a position of the object brought in proximity to or into contact with the touch detection surface,
• wherein a first driving signal is supplied to each of the first electrodes from the touch detection circuit in a second mode,
• a second driving signal is supplied to the second electrode from the touch detection circuit in a first mode,
• the proximity or the contact of the object is detected from the second electrode on a basis of electrostatic capacitance of the second electrode in the first mode,
• the position of the object is detected from the first electrodes on a basis of electrostatic capacitance of each of the first electrodes in the second mode,
• when the proximity or the contact of the object is not detected during a predetermined period in the first mode, the touch detection circuit performs the first operation after the predetermined period, and
• the first mode is switched to the second mode when the proximity or the contact of the object is detected in the first mode.