| 摘要 |
<p>The present invention relates to a complex sheet which is used as a lower support when an optical film such as a prism, a polarizing plate, a light guide plate or a light diffusion plate used for manufacturing a backlight unit (BLU) which is an LCD component, is cut out, and more particularly, to a complex sheet having excellent side burr characteristics, which is used in a punching process of an optical film. According to the present invention, provided is a complex sheet which does not generate foreign substances such as scraps and has excellent tensile and impact strength, so that it is possible to perform punching of 600 times or more without serpentine modification in repetitive use. In addition, according to the present invention, provided is a complex sheet having improved side burr characteristics by forming a step between the widths of a polyethylene terephthalate layer and a cast polypropylene layer.</p> |
