A 3-D image display comprising a backlight, a liquid crystal shutter array having an opening and a mask alternately formed therein and selectively passing light emitted from the backlight by switching the opening and the mask. The device comprises a support branch, formed by a plurality of spacers, adjacent to one another in which a rope or tie-rod is inserted in a housing comprised in the spacers, a supplying pipe for the supplying line and a crosspiece comprising a seat adapted to support the supplying pipe. The periphery of an upper dielectric layer of the first dielectric layer andor the second dielectric layer is positioned identically or partially in size and shape to a periphery of a lower dielectric layer to be formed. Vectors containing those DNA segments, host cells containing the vectors and methods for producing those enzymes by recombinant DNA technology in transformed host organisms are disclosed. The ratio between the total width of the stack of inner plates, i.