Quality of glass substrate plays a crucial role in the fast-growing market for flat screens. Inclusions and scratches measuring even just a few nanometers can later cause blackouts of single pixels on the finished display, and thus lead to very costly waste. That’s why glass substrate delivered for further processing has to be 100 percent flawless.

SIGLAS^® TFT Inspection, our laser-based inspection system, revolutionizes quality control at the cold end of glass substrate production. Thanks to high-sensitivity detection of scattered light and patented scanning and detection optics, the system detects not only point defects in the submicrometer range, but micro scratches at any possible orientation or angle – on both sides of glass substrate only a few tenths of millimeters thick. In addition, the system can be cascaded in any manner to allow inspection of varying web widths.

With these powerful capabilities, SIGLAS TFT Inspection makes it possible for the first time to deliver glass substrate of genuine zero-defect quality. The benefits are clear: less waste, greater profit, and a significant improvement in market position.