Full-screen display device with different unit pixels for emitting and receiving light

A full-screen display device with different unit pixels receiving and receiving light, comprising:

• a water and oxygen barrier layer;
• a protective panel, disposed above the water and oxygen barrier layer;
• a plurality of unit pixels, arranged below the water and oxygen barrier layer;
• a light-shielding layer, disposed on a first surface of the water and 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, at least one of the unit pixels being defined as a light-emitting element, at least one of the unit pixels being defined as a sensing element, and the sensing element having a light-sensing area;
• and
• wherein, the unit pixel defined as the light-emitting element emitting an incident light, the incident light passing through the water and oxygen barrier layer and scattering outwardly through at least one of the lenses, and the scattered incident light passes 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 passes through the water and oxygen barrier layer to be received by the light-sensing area and converted into an image electrical signal.