The cover window is made out of polyethylene terephthalate, instead of those made with glass or polyimide that are currently used in foldable phones.
LG Chem said on Tuesday it has developed a new cover window used to protect foldable displays. A cover window is a protective film that is attached on top of folding displays to protect them from external damage. Called Real Folding Glass, the company said the new technology consists of a specially developed material that is coated onto the surface of a polyethylene terephthalate (PET) film, a kind of plastic, to make it « hard as glass » while still remaining flexible. According to LG Chem, the coating material is attached on both sides of the PET film and has a thickness of a few dozen micrometres.
