With the distinct advantages of high-brightness, high-efficiency and wide-gamut, color-conversion with quantum dots and Micro-LED illumination holds great potentials in display domain. On the basis of the single and arrayed quantum dots model, spectrum, efficiency and viewing angle of quantum dots color-conversion procedure are characterized and demonstrated in detail. In Light Tools, simulation models is built up by Micro-LED light source, film layer of quantum dots and detector. The simulated results report color conversion efficiency from the ultraviolet Micro-LED is better than the blue source, and green, red color output light have higher conversion efficiency using corresponding quantum dots. Additionally, with the increase of viewing angle from Micro-LED, the uniformity of illuminance distribution is highly improved and the light leakage in the ultraviolet region is apparently decreased. Utilizing the newly-designed 6×6 quantum dots modality, the arrayed models with and without microstructure are investigated and compared. From the calculated true color map and illumination map,the output light from arrayed quantum dots with microstructure has obvious features of clear edges and sharp color boundaries, which is extremely applicable for high-performance display devices.