METHOD FOR MANUFACTURING TEMPERED GLASS PLATE, METHOD FOR MANUFACTURING GLASS PLATE FOR TEMPERING, TEMPERED GLASS PLATE, AND TOUCH PANEL

摘要

PROBLEM TO BE SOLVED: To provide a method capable of manufacturing a tempered glass plate the top face of which is concave.SOLUTION: A glass plate 10 is formed by a float process. A polishing step of obtaining a glass plate 11 for tempering is carried out by polishing at least the top face 10a of the glass plate 10 between the top face 10a and the bottom face 10b. Both surface layers of the glass plate 11 for tempering are tempered through ion exchange treatment to obtain a tempered glass plate 1. A polishing step is carried out so that the top face 1a of the tempered glass plate 1 becomes a concave surface.