There is provided a system with a linear line structure for manufacturing a liquid crystal display element by feeding sheet pieces of optical functional films and carrier films from first and second continuous rolls with different widths. The continuous rolls are formed by winding a laminate comprising a carrier film and sheet pieces of an optical functional film comprising a polarizing film. The sheet pieces are peeled off from the carrier films, and bonded to both surfaces of a rectangular liquid crystal panel (W). Film feeding lines are arranged to feed the optical functional films from the first and second continuous rolls in such a manner that the optical functional films being fed are linearly aligned with each other in planar view. A panel feeding line is placed above the film feeding lines in an overlapping manner and placed to feed the liquid crystal panel (W) linearly in planar view. A panel turning unit is provided in the panel feeding line to turn over and horizontally rotate the liquid crystal panel (W) so that bonding of one of the sheet pieces to the liquid crystal panel (W) from below can be followed by bonding of another one of the sheet pieces thereto from below.