example 2 is a loose video cable or damaged LVDS cable.
example 3 is a bad LCD panel. (entire sections of a display out are a row/col address problem on the matrix)
example 1 looks like 2, but you see it only affects a section of the display so it's actually like 3.
In any event, if you have a mac that's got the display as a single piece for replacement, the whole display panel needs to be replaced since the cables and panels can't be ordered separately. (from apple anyway)
A video of the problem would be very useful.
