7x3 Vertical Pixel Screen

Hello. So I was bored the other day and I came up with an idea - to build a vertical pixel screen. Now usually, most of the screens you see that people have made on Minecraft are made of square (2x2) pixels. I did it with vertical (2x1) ones!
Usually people don't do screens with vertical pixels, because they are extremely hard to wire up. So the trick I've done is pretty simple: I divided the screen in two sections. One is 3 blocks further away from another. When you get far enough, they nicely fill up each other and it's hard to tell if there is any difference. To make it look even better, I added a dark walls and ceiling to prevent from sunlight and make the screen a lot brighter and more cinema-likely.