[dragontamer]

It's probably more impressive that the LED was manufactured with light photons. I know it's "normal lithography" problems, but making a 500nm device out of 300nm or 400nm waves of light is downright impressive.

[jacquesm]

Have a look at what a high end CPU wafer mask looks like. It's nothing short of magic.

[mapt]

First, take a look at a process node that is 20 years out of date, considered almost trivial by comparison to today's chips.

https://www.youtube.com/watch?v=zUgy29h0alM