UV Display Project

Project Overview

A flatbed scanner has a camera CMOS of an abnormal size, such as 1024x1 instead of 1024x768. The motors move the camera down a linear track to capture 1024 x (length of scanner bed)

An SLA 3D printer has a transparent monochrome LCD panel with external UV light bulbs behind it. As the motors move the 3d print bed down the linear track, the graphics on the LCD block or allow the uv light to cure the resin in specific shapes There are no LCD panels being sold of a 1024x1 size in any form, transparent, monochrome, etc

I'm looking for a 1024x1 LCD that emits UV light from unlit pixels, this would move down a linear track over a uv sensitive paper roll, like a flatbed scanner or thermal printer to cover the paper in 1024x1024 graphic

I have photochromic powder that I bought. I mixed it with a paint to coat a sheet of paper in a photochromic layer, so the paper could be drawn on using UV light.

If I had a custom 1024x1 LCD with UV light transmittance and a UV light behind it, I could mount the display and backlight to a linear track, and have the linear track move the thin strip display down the sheet of photochromic-coated paper to draw custom text and graphics to the paper. The text and graphics could stay on the paper for one minute or a few minutes depending on both the intensity of the UV light, duration of exposure, and the temperature of the environment around the paper.

This could be used as a super low cost 18 inch size display made out of paper with a tiny component that could help third world citizens as a digital newspaper

I could prototype this by making a PCB with 120 UV LED components on it, and when the PCB slides down the paper, a microcontroller will toggle each LED on and off to draw text and graphics on the photochromic paper, just like a thermal receipt printer uses a heating element of hundreds of microcoils all in a line to heat thermochromic pigment in the receipt paper.

This prototype could be made in 3 ways.
1) A PCB of UV LED components in a line
2) A custom UV-compatible LCD with 1024x1 resolution
3) A semiconductor wafer with MicroLEDs lithographed to it along a line