| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide means for remedying the present situation that stuck labels or stamped printing ink for display of component peculiar information of resin optical sheets for use in liquid crystal devices cannot be sufficiently adapted for resource recycling when being scrapped after use and are disposed as combustible waste by combustion because it is troublesome and difficult to peel the labels or to separate the printing ink. <P>SOLUTION: Component peculiar information of constituent material names, a component code, a production lot number, the place of origin, etc. which is required to be displayed on a resin optical sheet for a liquid crystal display device is marked in a peripheral part on the outside of an effective display area of a specific face or the optical sheet the by laser beam processing or punching. When a plurality of optical sheets are laminated, the optical sheets are marked along specific sides of respective optical sheets and a marking position is shifted in the lamination layer order. <P>COPYRIGHT: (C)2008,JPO&INPIT |
