LAMINATED POLYESTER FILM AND MANUFACTURING METHOD THEREFOR

摘要

The present invention relates to a laminated polyester film and a manufacturing method therefor. The polyester film of the present invention is characterised by comprising: a first layer having a first polyester resin manufactured using a first catalyst; and a second layer having a second polyester resin manufactured using a second catalyst that is different from the first catalyst, wherein the first and the second layer are laminated. The polyester film according to the present invention has features of improved luminance and low oligomer elution, and can therefore be advantageously used as a substrate for ITO, a silver nanowire, a metal mesh, and a prism for an LCD backlight unit.