It's a terribly blurred screenshot, nearly unusable for diagnoses. But as GeoffR points out, there is an arc-like crack visible starting at the left side just above the keyboard and extending at least one quarter of the screen width.
Sorry to say but this looks like the textbook broken glass substrate, with repair being more or less impossible. The light is separate from the display so unless you really manage to break even the lighting system it will work despite the display glass substrate being broken.
So it's now n:m+1 on Koboy's theory until the next broken H2O or HD...
