The demand of the glass for FPD is increasing. Therefore, development of new cutting technology with higher manufacturing efficiency is desired. Usually, there are two processes in cutting the FPD glass. The first process is to scribe on the glass by laser or wheel cutter. Next process is to cut the glass along the scribe line by bending stress. In this process, the glass is cut using the way that run along the scribe line while pressing by the roller. In the next step, the same process is repeated after the glass rotated 90 degrees. If this process of rotation can eliminate, it would be possible to shorten the processing time. Therefore, using the tensile stress generated by the loop of the vibration mode, we thought that glass could cut the cross at once. It was found the possible that the glass can cut a cross used a vibration mode from the results of FEM analysis and an experiment.
