Any idea if the repair process would leave any visible marks on the screen?
The article seems more like it is describing something that this technology could possibly be used for, not something that has been even tested yet. It did mention the repair would be "almost invisible".
It also says "your next cell phone might have a self repairing screen" then it says the tech is about 5 years out from possibly being implemented on some phones. Classic clickbait article with very limited factual info.
My question about this would be, how much of the material need to be made of these little balls of repair fluid? Would the integrity of the parent material be affected? After they crack once are they used up so any future cracking in that same area would not heal itself? What if the crack that forms does not burst one of these little repair capsules? Does the fluid in them have a shelf life or does it discolor?