An integrated circuit, or portion thereof, such as a CMOS device, includes an epitaxially grown dielectric on a silicon carbide base. The cover is formed from a cover material mainly containing a thermoplastic urethane resin by injection molding using a mold composed of upper and lower mold halves. A partial garbage collection unit collects free cells from cells that are used after the check of the state of use of cells recently made by the full garbage collection unit, based on the check result of the state of use of cells. , spray or spin coating, the two layers diffuse into one another to form a composite layer. The batten includes at least one channel to facilitate migration and drainage of moisture between the batten and the framing member. Rectangular wave voltage which changes between positive voltage V11 and 0 volt in cycle which is two times of cycle during which an optical state of an optical layer is changed is applied to an opposite electrode of a screen in a reverse mode.