Provided is a display apparatus using a micromirror or an image display device. The display apparatus is designed to eliminate dark regions, usually formed by pixel partitions or black matrixes, display a high-quality image by increasing light usage efficiency, and improve the power consumption. A display apparatus using a microlens includes a micromirror array, a substrate, and a microlens array. The micromirror array includes a plurality of micromirrors arranged to reflect incident light rays from a light source. The substrate supports the micromirror array. The microlens array includes a plurality of microlenses disposed between the light source and the micromirror array to condense the incident light rays from the light source upon the micromirror array and correct a traveling path of reflected light rays from the micromirror array.