| 摘要 |
By scribing, an exchange frequency of a tool is reduced even when the points of the tool is worn out. Inclined planes are formed from both sides of a base (11) of a diamond tool (10) based on the edges of the base (11), and both sides of the ridge are defined as points (P1-P16). One point comes in contact with a substrate by tilting the diamond tool (10), and performs scribing without being electrically powered. When the points are worn out by scribing, the diamond tool (10) is rotated, and another point comes in contact with the substrate to perform scribing. Thus, a plurality of points can be used with a single diamond tool, and the exchange frequency of the diamond tool is reduced. |
