Patent ID: 7972462

Claim:
A method for manufacturing a combination-type optical film comprising a plurality of optical films each having at least one end face at which the optical films are opposed to one another, comprising the steps of: (1) opposing the end faces of the optical films to one another with a gap provided therebetween; (2) holding the opposed portions of the optical films with a holding member placed on at least one side; (3) connecting an organic solvent- or adhesive-containing vessel to one side of the gap between the opposed portions of the optical films to charge the organic solvent or the adhesive into the gap with the aid of a negative pressure state, wherein an other side of the gap is not connected to the vessel and the other side of the gap is connected to a vacuum pump so that the organic solvent or the adhesive is charged into the gap with the aid of the negative pressure state produced by the vacuum pump; and (4) removing the organic solvent or the adhesive under reduced pressure to bond the opposed end faces to one another, wherein the gap between the opposed end faces is narrowed.