Preparation method of flexible Micro-LED array based on surface micro-printing technology

The invention discloses a preparation method of a flexible Micro-LED array based on a surface micro printing technology. In the scheme, the sugar, the corn syrup and the water are mixed and heated to prepare the flexible caramel layer, the micro-disc attached with the adhesive layer is transferred to the surface of each Micro-LED chip of the flexible Micro-LED array through the flexible caramel layer, and the micro-disc is adhered to the surface of the Micro-LED chip through the adhesive layer, so that the light extraction efficiency of each chip is improved. Besides, the Micro-LED chip is provided with the Bragg reflector, due to the band-pass filtering effect of the Bragg reflector, light with the target wavelength can be reflected to the light-emitting face, the light extraction efficiency of the chip is improved, meanwhile, stray light is transmitted to the electrode, the stray light is absorbed by the electrode, the full width at half maximum of the spectrum of the chip is reduced, and the purity of the