Breaking apparatus and breaking method for substrate made of brittle material

A breaking apparatus for breaking a substrate formed with a plurality of scribe lines successively along the scribe lines, comprising:

• a blade raising-lowering unit for moving a blade in upward and downward directions to break a substrate;
• a blade rest for holding a substrate formed with a plurality of scribe lines;
• a moving unit for moving said substrate along its surface;
• a camera for taking an image of part of the substrate located between said blade rest;
• and
• a controller for allowing said blade to move upward after breaking for acquisition of a substrate image using the camera, allowing the substrate to move until the following scribe line to be cut for breaking is set in a breaking position, allowing detection of the position of the following scribe line to be cut for breaking through image processing on said image taken by the camera concurrently with the movement of said substrate, and allowing correction of the position of said substrate so that the following scribe line to be cut for breaking can be situated immediately below said blade.

A breaking method for breaking a substrate formed with a plurality of scribe lines successively along the scribe lines by pressing a blade thereto, comprising the steps of:

• a first breaking process of lowering and raising a blade in line with a scribe line to break a substrate along the scribe line, and moving said substrate so that the following scribe line to be cut for breaking can be situated immediately below said blade;
• a second breaking process of lowering and raising the blade in line with the scribe line to break the substrate along the scribe line, and moving said substrate so that the following scribe line to be cut for breaking can be situated immediately below said blade;
• a process of, after the completion of said first breaking process, acquiring an image of the substrate with use of a camera and performing image processing to detect the position of the following scribe line to be cut for breaking concurrently with said second breaking process;
• and
• a process of, after the completion of said second breaking process, correcting the position of said substrate so that the following scribe line to be cut for breaking can be situated immediately below said blade, whereafter returning the procedure to said second breaking process.

A breaking apparatus for breaking a substrate formed with a plurality of scribe lines successively along the scribe lines, comprising:

• a blade raising-lowering unit for moving a blade in upward and downward directions to break a substrate;
• a blade rest for holding a substrate formed with a plurality of scribe lines;
• a moving unit for moving said substrate along its surface;
• a camera for taking an image of part of the substrate located between said blade rest;
• and
• a controller for performing a first breaking process of lowering and raising a blade in line with a scribe line to break a substrate along the scribe line, and moving said substrate so that the following scribe line to be cut for breaking can be situated immediately below said blade, a second breaking process of lowering and raising the blade in line with the scribe line to break the substrate along the scribe line, and moving said substrate so that the following scribe line to be cut for breaking can be situated immediately below said blade;
• a process of, after the completion of said first breaking process, acquiring an image of the substrate with use of a camera and performing image processing to detect the position of the following scribe line to be cut for breaking concurrently with said second breaking process;
• and a process of, after the completion of said second breaking process, correcting the position of said substrate so that the following scribe line to be cut for breaking can be situated immediately below said blade.

A breaking method for breaking a substrate formed with a plurality of scribe lines successively along the scribe lines by pressing a blade thereto, comprising the steps of:

• a first breaking process of lowering and raising a blade in line with a scribe line to break a substrate along the scribe line, and moving said substrate so that the following scribe line to be cut for breaking can be situated immediately below said blade;
• a second breaking process of lowering and raising the blade in line with the scribe line to break the substrate along the scribe line, and moving said substrate so that the following scribe line to be cut for breaking can be situated immediately below said blade;
• a third breaking process of lowering and raising the blade in line with the scribe line to break the substrate along the scribe line, and moving said substrate so that the following scribe line to be cut for breaking can be situated immediately below said blade;
• a first image processing for, after the completion of said first breaking process, acquiring an image of the substrate with use of a camera to detect the position of the following scribe line to be cut for breaking concurrently with said second breaking process;
• a second image processing for, after the completion of said second breaking process, acquiring an image of the substrate with use of the camera in a different position to detect the position of the following scribe line to be cut for breaking concurrently with said third breaking process;
• and
• a process of, after the completion of said third breaking process, correcting the position of said substrate so that the following scribe line to be cut for breaking can be situated immediately below said blade on the basis of the position detected by said first image processing and second image processing, whereafter returning the procedure to said second breaking process.

A breaking apparatus for breaking a substrate formed with a plurality of scribe lines successively along the scribe lines, comprising:

• a blade raising-lowering unit for moving a blade in upward and downward directions to break a substrate;
• a blade rest for holding a substrate formed with a plurality of scribe lines;
• a moving unit for moving and rotating said substrate along its surface;
• a camera for taking an image of part of the substrate located between said blade rest;
• and
• a controller for performing a first breaking process of lowering and raising a blade in line with a scribe line to break a substrate along the scribe line, and moving said substrate so that the following scribe line to be cut for breaking can be situated immediately below said blade;
• a second breaking process of lowering and raising the blade in line with the scribe line to break the substrate along the scribe line, and moving said substrate so that the following scribe line to be cut for breaking can be situated immediately below said blade;
• a third breaking process of lowering and raising the blade in line with the scribe line to break the substrate along the scribe line, and moving said substrate so that the following scribe line to be cut for breaking can be situated immediately below said blade;
• a first image processing for, after the completion of said first breaking process, acquiring an image of the substrate with use of a camera to detect the position of the following scribe line to be cut for breaking concurrently with said second breaking process;
• a second image processing for, after the completion of said second breaking process, acquiring an image of the substrate with use of the camera in a different position to detect the position of the following scribe line to be cut for breaking concurrently with said third breaking process;
• and a process of, after the completion of said third breaking process, correcting the position of said substrate so that the following scribe line to be cut for breaking can be situated immediately below said blade on the basis of the position detected by said first image processing and second image processing.