Patent ID: 8277587
Filing Date: 2012-10-02
Classification: B32B,C09K,G02F,Y10T

Abstract:
1. A continuous manufacturing method for liquid-crystal display elements comprising steps of; providing a continuous web of optical film comprising a polarizer film having an adhesive layer thereon a carrier film and information encoded thereon, the encoded information indicating positions for slitting the continuous web of optical film based on positions of defects present in the continuous web of optical film and identification information for identifying the continuous web of optical film; continuously feeding the continuous web of optical film to a lamination station; measuring a feed distance of the continuous web; calculating a feed-length measurement data based on the feed distance; reading the encoded information recorded on the continuous web; forming a plurality of slit-lines in the continuous web by slitting the continuous web from a surface opposite to the carrier film to a depth reaching the surface of the carrier film adjacent to the adhesive layer, along slitting positions, based on the encoded information and the feed-length measurement data, when the slitting position defined in the continuous web thereon comes to a slitting station; using the encoded information for determining whether a polarizing sheet being formed between an adjacent pair of the slit-lines sequentially formed in the continuous web is a defective polarizing sheet having one or more defects or a normal polarizing sheet having no defect; peeling the polarizing sheet determined to be the normal polarizing sheet, among the polarizing sheets formed between an adjacent pair of the slit-lines sequentially formed in the continuous web of optical film, from the carrier film; transporting the peeled polarizing sheets to the lamination station; sequentially transporting the liquid-crystal display elements to the lamination station in synchronization with the transportation of the normal polarizing sheets to the lamination station; and applying the polarizing sheets to respective ones of the liquid-crystal display elements in a sequential manner.