Chemically strengthened glass plate and method for manufacturing same

A chemically strengthened glass plate manufactured by ion exchange of a surface of a glass plate to replace alkali metal ions A which are the largest in amount among all the alkali metal ion components of the glass plate with alkali metal ions B having a larger ionic radius than the alkali metal ions A,

• the chemically strengthened glass plate having:
• a surface compressive stress of not less than 600 MPa at a surface of the chemically strengthened glass plate;
• and
• a compressive stress layer containing two types of stress patterns A and B, the stress pattern A being a stress pattern of a surface portion of the glass plate, the stress pattern B being a stress pattern of an inside of the glass plate,
• wherein the stress patterns satisfy the formula SA>SB where SA represents a slope of the stress pattern A and SB represents a slope of the stress pattern B when the stress patterns A and B are each approximated by a linear function.