https://techcrunch.com/2021/12/15/oppo-decreases-the-crease-for-its-new-foldable/

The crease, it seems, is unavoidable. It’s right there, smack in the middle of the those big, expensive folding displays. And it’s invariably (and perhaps understandably) the first comment on nearly every story I post about a foldable phone. The alternative isn’t ideal, either — a gap between two distinct displays à la Microsoft’s Surface Duo.

The “N” in Oppo’s new Find N foldable doesn’t stand for “no crease,” exactly, but all reports thus far point to a reduction of that being among the biggest aesthetic complaints revolving around the first few generations of foldables. It is, according to Oppo, “up to 80% less noticeable” than on standard foldables. Crease detection is, of course, in the eye of the beholder, but more than anything, it depends on how the light hits the screen.