Full-screen display device with unit pixel having function for emitting and receiving light

A full-screen display device with unit pixels having function for transmitting and receiving light, comprising:

• a water-oxygen barrier layer;
• a protective panel, disposed above the water-oxygen barrier layer;
• a plurality of unit pixels, arranged below the water-oxygen barrier layer, and at least one of the unit pixels having a light-emitting area inside and at least one of the unit pixels having a light-sensing area inside or outside;
• a light-shielding layer, disposed on a first surface of the water-oxygen barrier layer and having a plurality of openings to expose at least part of each of the unit pixels;
• and
• a plurality of lenses, disposed on the first surface of the water-oxygen barrier layer and located in the openings;
• wherein, when the full-screen display device performing biometric recognition, the light-emitting area emitting an incident light, the incident light passing through the water-oxygen barrier layer and scattering outwardly through at least one of the lenses, and the scattered incident light passing through the protective panel and then reflected by a test object to generate a reflected light;
• the reflected light passing through the protective panel and then entering at least one of the lenses;
• the at least one of the lenses converging the reflected light, and the converged reflected light travels along the a converged light path of the at least one of the lenses and passing through the water-oxygen barrier layer to be received by the light-sensing area and converted into an image electrical signal.