Diagrams for making an origami dot-matrix display (2×12). You can change the state of each 'dot' to 'on' or 'off' using color-change. You’ll get more dots if you use longer paper. To fold a 2×12 you’ll need a 26:12 paper. To get a 4×12, you’ll need a 52:12 paper, and so on.
Thin paper is highly recommended, bicolor paper is a must.