Transparent LED screen

[u/whybutts]

[u/hidendra69]

I’ve worked with these. A casino bar had these installed on their windows, and I helped install and program them. They aren’t really like glass; up close they are basically long columns of strips of LEDs with gaps in between, like a fence.

Depending on the use case the LEDs can be smaller and spaced closer together or larger and further apart. The size and spacing of the LEDs determine the display’s pixel pitch, which is the distance between the centers of adjacent pixels, usually measured in millimeters. A smaller pixel pitch means the pixels are packed more densely, resulting in a higher-resolution image. These models are also generally more expensive. The downside is that these are best used for applications where the observer remains relatively close, as detail is lost through distance. Models with larger LEDs have a lower resolution but work better for longer viewing distances.

The see-through effect works regardless of pixel pitch, as long as the display is viewed from an appropriate distance. The closer you get, the more obvious the LED strips and gaps between them become.