Right now this display has the problem that the darkest color you can achieve is the color/brightness of the light coming through the screen. A sufficiently bri

Right now this display has the problem that the darkest color you can achieve is the color/brightness of the light coming through the screen. A sufficiently bright background will wash out the image entirely. Why not put a grayscale LCD panel behind the MicroLED screen to allow the display to be locally opaque? Control it with an alpha channel for the whole display. Then you could have windows or objects appearing to float in space, with full dynamic range available.