How is each individual pixel controlled on a 4K display with millions of pixels?

Question

I understand that for both LCD and OLED, different voltages are applied to get the diode to react differently and emit different colors and brightness levels. But how do they control each of these millions of pixels simultaneously? Are there literally millions of tiny copper wires going to each pixel?

In: Engineering

Answer 1

Yes but not as many as you think – they are run from a matrix so to light an LED at position A use wires X & Y, to light position B use wires X and Z and so on.