Method for manufacturing glass plates, glass plates, etching apparatus, and glass plate manufacturing apparatus.

Abstract

The objective of this invention is to increase the taper angle of the through-hole formed on a glass plate. The method for manufacturing the glass plate includes: a modification step S1, in which a predetermined portion Ge of the through-hole 16 formation in a glass plate G is modified by irradiation with laser light L; and an etching step S2, in which the through-hole 16 is formed in the predetermined portion Ge by etching the glass plate G after modification step S1. In the etching step S2, an etching solution EL is sprayed onto at least one of a first main surface Ga and a second main surface Gb of the longitudinally oriented glass plate G.

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