is that a crack in the display on the lower right quadrant? I've seen LCDs freak out along those lines for ALL video when there is damage on/near the ribbon connector area of the display.
if this only presents on the backup, I would think it's not the display itself. if it's an all the time thing, that's a real shame.
as for those who have said that they had cam issues after overexposure to direct sunlight, yes, that is a big deal and very common problem with outdoor cameras getting the CCD oversaturated or fail to return good info because of overtemp.