Why do we still have no (phone) screens that are still readable in sunlight?

Question

Some years ago there was this „paperlike kindle“ that was advertised with: „you can read it in bright daylight!“ and then we never heard about this invention again.

Edit: thanks for your input. I think I understand now.

In: Technology

Answer 1

The tradeoff for “read it in broad daylight” was “monochrome only” (though I think there are color versions now), and “very slow response time” (hundreds of milliseconds).

You would not be happy with an e-ink phone display, even though you could read it in broad daylight.