CHEMICALLY STRENGTHENED GLASS AND CHEMICALLY STRENGTHENED GLASS MEMBER

摘要

PROBLEM TO BE SOLVED: To provide chemically strengthened glass that has improved resistance to a specific impact.SOLUTION: The chemically strengthened glass is obtained by the ion exchange of glass for chemically strengthening having a Young's modulus less than 71.5 GPa and substantially free from BO, the chemically strengthened glass having a surface compressive stress of less than 500 MPa, the thickness of a compressive stress layer of 25 μm or more, and an internal tensile stress of 20 MPa or less.