Method for manufacturing reinforced glass, and reinforced glass

Abstract

Provided is a method of manufacturing a tempered glass, including an etching step of etching a plate-shaped or sheet-shaped chemically tempered glass having a compressive stress layer in a surface thereof. The method further includes a step of preparing, as the chemically tempered glass before the etching, a chemically tempered glass, which has in at least part thereof a bendable thin portion having a thickness t1, in which the thickness t1is 150 μm or less, in which a maximum compressive stress CSa in the compressive stress layer before the etching is 1,100 MPa or less, and in which a depth DOLa of the compressive stress layer before the etching is less than 15 μm. The etching step includes etching the chemically tempered glass so that an etching amount Δt on one surface of the chemically tempered glass is 0.25 μm or more and 3 μm or less.