Foldable apparatus

Abstract

Foldable apparatus are described herein that include hard coating disposed on a first major surface of a foldable substrate comprising a glass-based material. A substrate thickness of the foldable substrate is from greater than or equal to 20 micrometers to less than or equal to 300 micrometers. The hard coating includes an inorganic material exhibiting a hardness greater than or equal to 8 GigaPascals as measured by a Berkovich Indenter Hardness Test. The foldable apparatus can achieve a parallel plate distance in millimeters equal to 0.1 times the substrate thickness in micrometers. In aspects, the hard coating can include an optical stack that includes an anti-reflective coating with a thickness from greater than or equal to 10 nanometers to less than or equal to 10 micrometers. In aspects, the foldable apparatus can further comprise an anti-fingerprint coating disposed on the hard coating.

Dependencies are inferred from the claim text.