COVER GLASS FOR DISPLAY DEVICE, AND MANUFACTURING METHOD FOR SAME

摘要

The present invention aims to provide a chemically strengthened glass plate which has a good yield in a cutting process of the chemically strengthened glass plate and has sufficient strength. The chemically strengthened glass plate has 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 is a stress pattern of a surface portion of the glass plate, and the stress pattern B is a stress pattern of an inside of the glass plate. The stress patterns satisfy the formula S A > S B where S A represents a slope of the stress pattern A and S B represents a slope of the stress pattern B when the stress patterns A and B are each approximated by a linear function.