Grinding method, OGS substrate and manufacturing method of OGS mother substrate

摘要

A grinding method, an OGS substrate and a manufacturing method of an OGS mother substrate are provided. The grinding method is used to grind the OGS substrate comprising a base substrate, wherein a shielding pattern is formed inside a periphery region of the base substrate, a reference mark is formed above the shielding pattern, the grinding method comprises: grinding an edge of the base substrate to form a chamfer; identifying edges of the reference mark and the base substrate; calculating a position distance between an outer edge of the reference mark and the edge of the base substrate corresponding thereto based on the identified edges of the reference mark and the base substrate; judging whether the position distance is smaller than a first distance; if it is judged that the position distance is smaller than the first distance, stopping grinding; otherwise, continuing to grind.