LG has filed patents with the Korean Intellectual Property Office (KIPO) for a few smartphone designs sporting borderless screens and in-display front cameras. The patents seem to show that LG could be using a flexible display with either a slanted screen or a straight screen with rounded corners sporting an oval hole at the top for housing the selfie camera (or two) thus yielding a virtually 100% borderless screen with no notch.
https://www.notebookcheck.net/LG-patents-a-true-bezel-less-smartphone-display-with-an-in-display-selfie-camera.357626.0.html