| 摘要 |
A chemically strengthened glass which has, formed as a surface layer thereof, a compressive stress layer formed by an ion exchange method, wherein the hydrogen concentration (Y) in a region extending to a depth (X) from the outermost layer of the glass satisfies relational formula (I) wherein X is 0.1 to 0.4 (μm), and the arithmetic average roughness (Ra) of each of edge surfaces that connect the front and back main surfaces of the glass to each other is 300 nm or less. Y = aX + b (I) [Y: a hydrogen concentration (in terms of H2O content, mol/L), X: the depth (μm) from the outermost surface of the glass, a: -0.255 to -0.005, b: 0.020 to 0.215] |
