US 2025/0154049 A1 · METHODS OF FORMING A FOLDABLE APPARATUS

Abstract

Methods of forming a foldable apparatus can involve contacting an existing first major surface of a foldable substrate with an alkaline solution to remove an outer layer to form a new first major surface. In aspects, the alkaline solution comprises about 10 weight % or more of a hydroxide-containing base and/or a pH of about 14 or more. Methods of forming a foldable apparatus can comprise contacting a first major surface of a foldable substrate with a first alkaline detergent solution under sonication. Methods of forming a foldable apparatus can comprise contacting an existing first major surface of a foldable substrate with an acidic solution having a pH from about 3.3 to about 3.5 and a fluorine-containing compound. Methods of forming a foldable apparatus can comprise contacting an existing first major surface of a foldable substrate with a solution comprising fluorosilicic acid.

Claims20

Dependent claims

A method of forming a foldable apparatus comprising:

chemically strengthening an existing first major surface of a foldable substrate to form a first compressive stress region extending to a first depth of compression from the existing first major surface of the foldable substrate;
and then
contacting the existing first major surface of the foldable substrate with an acidic solution comprising a first temperature for a first period of time to remove an outer layer from the existing first major surface to form a new first major surface, the outer layer comprising a thickness ranging from about 1 nanometer to about 3 micrometers, the first temperature ranges from about 20° C. to about 55° C., and the acidic solution comprises a pH ranging from about 3.3 to about 3.5 and a fluorine-containing compound.

Dependencies are inferred from the claim text.

Methods of forming a foldable apparatus

Life of this patent

Methods of forming a foldable apparatus

Life of this patent

Abstract

Claims20