Digitizing of a variety of media, including hi-vision broadcasting and media distribution, has been standardized. The flat panel display (FPD) industry, in particular, has shown dramatic growth.

As large FPDs have become popular, the molds for FPD light guide plates and the lapping machines for the lip dies used to coat photoresist films have necessarily become larger. To meet this trend, we have achieved a mirror surface finish of 42” light guide plates using the world-largest diamond lapping system EJW-3200IF, which is equipped with a lapping plate of more than 3 meters in diameter.