Cause and any amelioration, short of draining the liquid and starting again (for elfin safety in nothing else), and of course unobtanium replacement displays
Where I used to work a batch of early large LCD display Philips DVM meters for the engineers. Every now and then , despite warning labels, someone would leave one in direct sunlight (UK version) for a while and the display would become next to useless, permanently. Presumably the LC migrates out of its assigned wells and does not go back in them. Anyone know of a localised heat/cold/pressure treatment or something like that ,at least, won't make matters worse , and may actually improve the splodge a bit?