Cover glass and glass laminate

A cover glass, comprising:

• a glass sheet, which is a chemically strengthened glass sheet having a compressive stress layer as a surface layer, and has a thickness of 0.2 mm or more and 1 mm or less;
• and
• an inorganic film superposed on at least one surface of the glass sheet,
• wherein the inorganic film includes six or more layers formed by alternately superposing a film including a high-refractive-index material having a refractive index at 632-nm wavelength of 1.80 or higher and a film including a low-refractive-index material having a refractive index at the wavelength of less than 1.80, where the films including the high-refractive-index material and the films including the low-refractive-index material each have a single-film thickness of 5 nm to 250 nm, the inorganic film has an overall thickness of 850 nm to 6,000 nm, and a total film thickness of the films including the high-refractive-index material is larger than a total film thickness of the films including the low-refractive-index material, wherein the high-refractive-index material is silicon nitride,
• when the cover glass is placed on a horizontal platen so that one main surface of the cover glass is in contact with the platen and warpage amounts of the cover glass, which are amounts in which four corners of the cover glass have lifted from the platen, are measured with a gap gauge at 20° C., then an average value of the warpage amounts is 400 μm or less, and
• an absolute value of product obtained by multiplying the overall thickness of the inorganic film by an overall stress value of the inorganic film is 220×103 nm·MPa or less.

A glass laminate, comprising:

• a glass sheet, which is a chemically strengthened glass sheet having a compressive stress layer as a surface layer, and has a thickness of 0.2 mm or more and 1 mm or less;
• and
• an inorganic film superposed on at least one surface of the glass sheet,
• wherein the inorganic film includes six or more layers formed by alternately superposing a film including a high-refractive-index material having a refractive index at 632-nm wavelength of 1.80 or higher and a film including a low-refractive-index material having a refractive index at the wavelength of less than 1.80, where the films including the high-refractive-index material and the films including the low-refractive-index material each have a single-film thickness of 5 nm to 250 nm, the inorganic film has an overall thickness of 850 nm to 6,000 nm, and a total film thickness of the films including the high-refractive-index material is larger than a total film thickness of the films including the low-refractive-index material, wherein the high-refractive-index material is silicon nitride, and
• an absolute value of product obtained by multiplying the overall thickness of the inorganic film by an overall stress value of the inorganic film is 220×103 nm·MPa or less.

A glass laminate, comprising:

• a glass sheet, which is a chemically strengthened glass sheet having a compressive stress layer as a surface layer, and has a thickness of 0.2 mm or more and 1 mm or less;
• and
• an inorganic film superposed on at least one surface of the glass sheet, wherein the inorganic film includes six or more layers formed by alternately superposing a film including a high-refractive-index material having a refractive index at 632-nm wavelength of 1.80 or higher and a film including a low-refractive-index material having a refractive index at the wavelength of less than 1.80, where the films including the high-refractive-index material and the films including the low-refractive-index material each have a single-film thickness of 5 nm to 250 nm, the inorganic film has an overall thickness of 850 nm to 6,000 nm, and a total film thickness of the films including the high-refractive-index material is larger than a total film thickness of the films including the low-refractive-index material, wherein the high-refractive-index material is silicon nitride,
• an absolute value of an overall stress value of the inorganic film is 80 MPa or less, and
• an absolute value of product obtained by multiplying the overall thickness of the inorganic film by the overall stress value of the inorganic film is 220×103 nm·MPa or less.