A pixel of a display device is controlled by a tilting mirror. When the mirror is in a first position, light from a light source is directed to a light diffusing structure for viewing. If, however, the mirror is tilted, the light is directed along a path which prevents it from entering the light diffusing structure. Thus, the brightness of a pixel is controlled by tilting a mirror. In one embodiment, the colour of an individual pixel can be controlled by controlling the degree of tilt of a mirror.