Input and output device having touch sensor element as input device and display device

An input and output device comprising:

• a first flexible substrate;
• a second flexible substrate;
• a first buffer layer between the first flexible substrate and the second flexible substrate;
• a first crack inhibiting layer in contact with the first buffer layer;
• a sealing layer,
• an input device including a sensor element;
• and
• a light-emitting element,
• an external connection terminal,
• wherein the input device and the light-emitting element are provided between the first buffer layer and the second flexible substrate,
• wherein the sensor element includes a pair of electrodes and a dielectric layer,
• wherein the sealing layer bonds the first flexible substrate and the second flexible substrate,
• wherein one of the pair of electrodes is in contact with the sealing layer,
• wherein the first crack inhibiting layer contains at least one of a first conductive material and a first resin material, and
• wherein the first crack inhibiting layer surrounds the input device and the external connection terminal when seen from a direction perpendicular to a surface of the first flexible substrate.

An input and output device comprising:

• a first flexible substrate;
• a second flexible substrate;
• a first buffer layer;
• a first crack inhibiting layer;
• a sealing layer,
• an input device including a transistor and a sensor element;
• and
• a light-emitting element,
• an external connection terminal,
• wherein a first surface of the first flexible substrate faces a second surface of the second flexible substrate,
• wherein the sealing layer bonds the first surface and the second surface,
• 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 crack inhibiting layer contains at least one of a first conductive material and a first resin material,
• wherein the first crack inhibiting layer surrounds the input device and the external connection terminal when seen from a direction perpendicular to the first surface,
• 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 one of the pair of electrodes is in contract with the sealing layer,
• 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.