RED/GREEN/BLUE light on PSP screen?

I've noticed if I don't directly face my PSP, I can see a verticle blue/green/red line that alternates at the top depending on my view. What is the line for?

I've noticed if I don't directly face my PSP, I can see a verticle blue/green/red line that alternates at the top depending on my view. What is the line for?

Autosaver1

It's the subpixels that create the color for each pixel.