Input and output device

An input and output device comprising:

• a first flexible substrate;
• a second flexible substrate;
• a first buffer layer;
• a first crack inhibiting layer;
• an input device including a transistor and a sensor element;
• and
• a light-emitting element,
• wherein a first surface of the first flexible substrate faces a second surface of the second flexible substrate,
• wherein the first buffer layer, the first crack inhibiting layer, and the input device are provided on the first surface side of the first flexible substrate,
• wherein the first buffer layer includes a region overlapping with the first crack inhibiting layer,
• wherein the sensor element includes a pair of electrodes and a dielectric layer,
• wherein the dielectric layer is provided between the pair of electrodes,
• wherein the transistor and the sensor element are electrically connected to each other, and
• wherein the light-emitting element is provided on the second surface side of the second flexible substrate.