MicroLED capable of monitoring brightness and preparation method thereof

The invention relates to the technical field of display chips, and discloses a MicroLED capable of monitoring brightness and a preparation method thereof.The MicroLED capable of monitoring brightness comprises a substrate, a plurality of light emitting units are arranged on the surface of the substrate, isolation units are arranged between the light emitting units, each isolation unit comprises an isolation layer, a light reflecting layer is deposited on the surface of the isolation layer, and a photoelectric conversion layer is deposited on the surface of the light reflecting layer; a leveling layer is arranged between the light reflection unit and the isolation unit, an N electrode layer is arranged on the top of the leveling layer, the top of the photoelectric conversion layer is connected with the N electrode layer to form a common cathode structure, and the bottom of the photoelectric conversion layer is connected with a P electrode through a contact to form an internal loop. Current enters the leakage c