A LIGHT EMITTER/SENSOR UNIT, A DISPLAY, AND A METHOD FOR PRODUCING A DISPLAY

A light emitter/sensor unit (2) for a display (1), the light emitter/sensor unit (2) comprising:a thin-film photodiode detector, TFPD, (5) comprising a film (6) with an upper side (8) and a lower (7) side, the film (6) being configured to absorb light and to convert absorbed light into a current;a first thin-film light-emitting diode, TFLED, (10) comprising a film (16) with an upper side (18) and a lower side (17), the film (16) being configured to convert an electrical current into light;backplane voltage regulating circuitry (30) comprising first (31) and second (32) TFPD contact surfaces, a first TFLED contact surface (41), and transistors, wherein the transistors are configured to set an electrical potential of the first TFLED contact surface (41) and to either set electrical potentials of the two TFPD contact surfaces (31, 32) or to measure a potential difference between the two TFPD contact surfaces (31, 32);wherein the lower side (17) of the film (16) of the first TFLED (10) is electrically connected to the first TFLED contact surface (41), and wherein the lower side (7) of the film (6) of the TFPD (5) is electrically connected to the first TFPD contact surface (31) and the upper side (8) of the film (6) of the TFPD (5) is electrically connected to the second TFPD contact surface (32).