Integrated system including a sensor switch and a display switch above the common substrate

A display system for detecting the presence of a user's finger or other element, the system comprising:

• a display comprising:
• a first switch;
• a first display electrode;
• a second display electrode;
• and
• a light emission layer disposed between the first display electrode and the second display electrode, wherein the first display electrode and the second display electrode are configured to apply a voltage to the light emission layer when the first switch is in a closed state;
• an external surface being configured to transmit light emitted by the light emission layer toward a user;
• and
• a sensor comprising:
• a second switch;
• a sensor electrode;
• and
• an analog front end connected to the sensor electrode via the second switch, the sensor electrode being configured, when the second switch is in a closed state, to receive and provide to the analog front end a signal indicative of the presence of the user's finger or other element, wherein
• the sensor electrode overlaps the first display electrode and/or the second display electrode at least partially, wherein
• the sensor electrode is disposed between the light emission layer and the external surface;
• the light emission layer is disposed between the sensor electrode and the second switch;
• and
• the sensor electrode is electrically connected to the second switch of the sensor through an opening in the light emission layer.