After dropping my iPhone X, green lines appeared on the screen (attached image). Searching for the problem online I could not find a satisfying answer. I would like to know if this is clearly a display (or display cable) issue, or if it might be a graphic driver/chip problem; E.g., Can I solve the problem with "simply" replacing the display.
I am assuming that there is no guaranteed answer to this, however, any best guess or with high probability answer would help me deciding the fate of my phone :)
NOTE I did a repair myself, solution added as separate answer.