Patent ID: 7908026

Claim:
A production system for producing a sheet-shaped product including an optical film for producing a sheet-shaped product having at least an optical film which is a member of an optical displaying apparatus, comprising: defect detecting means for detecting defects of a monolayer film and/or a laminate film constituting the sheet-shaped product in a state in which a protective layer film on a surface of the sheet-shaped product is not disposed; defect information preparing means for preparing defect information which is information related to the defects detected by said defect detecting means; yield calculating means for analyzing the defect information prepared in said defect information preparing means, and calculating a cutting position and calculating a yield of the sheet-shaped product provided in separate sheets obtained by cutting the sheet-shaped product source according to a determination condition which is a condition for determining whether the product is good or bad; setting means for setting a sheet-shaped product source in which said yield is above or equal to a predetermined value; first cutting means for cutting said set sheet-shaped product source with a slit width; defect information forming means for forming defect information on the protective layer of said cut sheet-shaped product source; defect information reading means for reading the defect information formed by said defect information forming means; and second cutting means for analyzing the defect information that is read by said defect information reading means, and producing a sheet-shaped product provided in separate sheets by cutting the sheet-shaped product source according to a determination condition which is a condition for determining whether the product is good or bad.