Electronic device and method of driving electronic device

An electronic device comprising:

• a display layer including a pixel within an active region to display an image and a sensor, the pixel including a pixel driving circuit and a light emitting element, and the sensor including a sensor driving circuit and a sensing element;
• a sensor layer disposed on the display layer, and including a plurality of first electrodes and a plurality of second electrodes;
• a display driving circuit configured to control the pixel and the sensor;
• a sensor driving circuit configured to control the sensor layer;
• and
• a main driving circuit configured to control the display driving circuit and the sensor driving unit and to operate in a first mode,
• wherein, in the first mode,
• the display driving circuit emits a first light through the light emitting element disposed in a first region of the active region,
• the display driving circuit receives a second light reflected based on the first light, through the sensing element disposed in the first region and a second region surrounding the first region, and
• the main driving circuit determines whether the display layer and the sensor layer are placed in a pocket of a user, based on an amount of the second light.