The storage capacitor of an active matrix liquid crystal display is formed to have a second electrode that laterally overlaps a first electrode. This invention also relates to a synthesis method of producing these metallosilicates with spatial distribution of the constituting elements. On the other hand, the travel of the tape 10 is guided by a pair of guide rollers 24 in upstream and downstream sides of the wrapping section 8, and the tape 10 is bent to have a cross section of an arc that is upward convex by guide surfaces of the rollers 24. A waveguide cutting tool is then positioned proximate to the waveguide and at a distance relative to a reference mirror.