Patent ID: 8709181

Claim:
A method for manufacturing an optical display device including an optical display unit and an optical film that includes a polarizing plate and is bonded to the optical display unit, comprising the steps of: unwinding and feeding a long sheet material from a roll of the long sheet material, wherein the long sheet material includes the optical film, a pressure-sensitive adhesive layer and a release film laminated in this order and has undergone a slitting process in a direction parallel to an absorption axis of the polarizing plate so that it has a width corresponding to a long side of the optical display unit; inspecting the optical film of the fed long sheet material to detect a defect; cutting a part of the long sheet material other than the release film into a length corresponding to a short side of the optical display unit, while separating the detected defect; bonding a non-defective cut piece of the optical film to a surface of the optical display unit; and rejecting a defect-containing part of the optical film, wherein the inspecting the optical film to detect a defect comprises: storing a position of the detected defect, determining an optical film bonding position, determining whether a distance between the position of the detected defect and the optical film bonding position is less than the length corresponding to the short side of the optical display unit, and judging that a corresponding portion of the fed optical film is defective when the distance between the position of the detected defect and the optical film bonding position is less than the length corresponding to the short side of the optical display unit.