| 摘要 |
PROBLEM TO BE SOLVED: To provide a break tool which can break a substrate clearly with a manual operation along scribe lines formed on the surface of the substrate and, even on the substrate where the penetration of cracks penetrating an inner part of the substrate along the scribe lines is shallow and the pitch of the scribe lines is narrow, can surely break the substrate.SOLUTION: A break tool includes: a receiving jig 1 provided with a recessed groove 3 which allows one edge part W' of a substrate W to be inserted to the surface; and a clamping jig 2 which clamps and retains the substrate W while protruding one edge part W' containing a scribe line to be divided of the substrate W. Therein, the clamping jig 2 is formed with a first plate material 8 and a second plate material 9, and a plate-like middle plate materials 11 interposed between both plate materials 8, 9 and the substrate W, and the middle plate materials 11 are formed with an elastic material and are formed such that a lateral width L1 of middle plate materials 11 gets to smaller than a lateral width L2 of the substrate W and areas L3 on which the middle plate materials are superimposed on lateral both edge parts of the substrate W to be clamped are left. |
