Patent ID: 8294872
Filing Date: 2012-10-23
Classification: B32B,G01N

Abstract:
1. A method for producing an information storage/readout device for use in a system for continuously manufacturing liquid-crystal display elements, the system for continuously manufacturing liquid-crystal display elements being configured to work with a roll of a continuous optical film laminate which comprises a continuous polarizing composite film including an adhesive layer and having a width conforming to a long or short side of a liquid-crystal panel formed in a given size, and a continuous carrier film releasably laminated on the adhesive layer, the system for continuously manufacturing liquid-crystal display elements being configured to form a plurality of slits in the continuous optical film laminate fed out from the roll, along a direction perpendicular to a longitudinal direction thereof, to make it possible to sequentially cut a plurality of polarizing sheets each having a given length corresponding to the long or short side of the liquid-crystal panel from the continuous optical film laminate and to laminate the sheets to respective ones of a plurality of liquid-crystal panels so as to continuously manufacture liquid-crystal display elements, the information storage/readout device comprising an information storage medium which stores therein slitting position information created based on a position of a defect detected by an inspection of a continuous polarizing composite film included in a continuous optical film laminate to indicate defective-polarizing-sheet slitting positions defining a defective or defect-containing polarizing sheet, and normal-polarizing-sheet slitting positions defining a normal or defect-free polarizing sheet, in the continuous inspected optical film laminate, and a roll of the continuous inspected optical film laminate which is provided with an identification indicia, the production method comprising the steps of: laminating a continuous protective film on at least one of opposite surfaces of a continuous polarizer to form an continuous polarizing composite film on which the adhesive layer is not yet formed; inspecting the continuous polarizing composite film to detect any defect existing in the continuous polarizing composite film on which the adhesive layer is not yet formed; creating, based on the position of the defect in the continuous polarizing composite film on which the adhesive layer is not yet formed, the slitting position information indicative of the normal polarizing sheet-slitting positions and the defective polarizing sheet-slitting positions defining respective ones of the normal polarizing sheet and the defective polarizing sheet in a direction perpendicular to a longitudinal direction of the continuous polarizing composite film on which the adhesive layer is not yet formed; releasably laminating a continuous carrier film to the continuous inspected polarizing composite film on which the adhesive layer is not yet formed through an adhesive layer to form the continuous inspected optical film laminate; storing the slitting position information in a storage medium to thereby provide the information storage medium, in a manner usable by the system continuously manufacturing to, during feeding of the continuous inspected optical film laminate, form a plurality of slits in the continuous inspected optical film laminate along a direction perpendicular to the longitudinal direction from a surface opposite to the continuous carrier film to a depth reaching a surface of the continuous carrier film adjacent to the adhesive layer so as to make it possible to cut the normal polarizing sheet and the defective polarizing sheet from the continuous inspected optical film laminate individually; creating the identification means in association with the slitting position information and providing the identification means on the continuous inspected optical film laminate; and winding the continuous inspected optical film laminate provided with the identification means, without separating the defect-containing polarizing sheet from the defect-free polarizing sheet, into a roll to provide the roll of the continuous optical film laminate.