The present invention provides a friction transmission belt in which slip noise caused at the time when a belt drive portion is immersed in water is suppressed and which has excellent bending fatigue strength. Primarily the invention is for feeding of metal strip to presses. The device has a core element with a first portion extending substantially longitudinally and a second portion wound to form at least a helical coil in the shape of cone. A contact hole is formed at a predetermined portion of the passivation layer and the first electrode so as to expose a drain electrode of the TFT. The metafile language has a relatively simple vocabulary and syntax, and is thus easy to learn and implement.