An electronic device , comprising: a display screen comprising a front surface used for luminescence display and a back surface, and the display screen comprising a display area and a non-display area surrounding the display area ; an infrared sensor comprising an emitter and a receiver , the emitter being located adjacent to the back surface and opposite to the non-display area , the emitter being configured to emit infrared light, and the receiver being configured to receive the infrared light; and a light blocking element arranged between the emitter and the display area , and configured to block the infrared light emitted from the emitter from entering the display area , wherein the electronic device further comprises: a light sensor arranged below the back surface and opposite the display area ; and a light guiding element arranged below the back surface and being configured to transmit light, penetrating the non-display area from the front surface, to the light sensor ; wherein the light guiding element comprises a light incident end and a light exit end , the light incident end faces the non-display area , the light exit end faces a light sensing face of the light sensor , and the light guiding element guides visible light penetrating the non-display area to the light sensor ; wherein an arrangement of the light sensor ranges between a first state where the light sensing face is perpendicular to the back surface and a second state where the light sensing face is away from the back surface so that an included angle between the light sensing face and the back surface ranges from 90° to 180°. a display screen comprising a front surface used for luminescence display and a back surface, and the display screen comprising a display area and a non-display area surrounding the display area ; an infrared sensor comprising an emitter and a receiver , the emitter being located adjacent to the back surface and opposite to the non-display area , the emitter being configured to emit infrared light, and the receiver being configured to receive the infrared light; and a light blocking element arranged between the emitter and the display area , and configured to block the infrared light emitted from the emitter from entering the display area , wherein the electronic device further comprises: a light sensor arranged below the back surface and opposite the display area ; and a light guiding element arranged below the back surface and being configured to transmit light, penetrating the non-display area from the front surface, to the light sensor ; a light sensor arranged below the back surface and opposite the display area ; and a light guiding element arranged below the back surface and being configured to transmit light, penetrating the non-display area from the front surface, to the light sensor ; wherein the light guiding element comprises a light incident end and a light exit end , the light incident end faces the non-display area , the light exit end faces a light sensing face of the light sensor , and the light guiding element guides visible light penetrating the non-display area to the light sensor ; wherein an arrangement of the light sensor ranges between a first state where the light sensing face is perpendicular to the back surface and a second state where the light sensing face is away from the back surface so that an included angle between the light sensing face and the back surface ranges from 90° to 180°. <EOS>