Marking wheel and marking method

Abstract

The objective of this invention is to provide a scribing wheel and scribing method that can minimize peeling between the resin film and the brittle substrate when scribing a brittle substrate with a resin film attached, thereby forming a vertical crack in the brittle substrate. A preferred embodiment of the scribing wheel of this invention comprises: a body portion rotatable about an axis, including a peripheral end of the body portion and a pair of inclined surfaces defining the peripheral end of the body portion; a pair of shoulders, each including a peripheral end of the shoulder portion, i.e., a protrusion disposed from the body portion along the axis at a predetermined width; and a pair of grooves formed between the body portion and the pair of shoulders.

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