LAMINATED FILM AND FILM CARRIER TAPE FOR PACKAGING ELECTRONIC COMPONENT

摘要

PURPOSE: To provide a laminated film for packaging electronic components that can easily and effectively reduce the warpage in a widthwise direction of the laminated firm for packaging electronic components, and to provide a film carrier tape for packaging electronic components. CONSTITUTION: In a laminated film 10 where a conductor layer 11 and an insulating film 14 are subjected to thermocompression bonding, a coefficient of thermal expansion in the widthwise direction of the insulating film 14 is nearly the same as or larger than that in the widthwise direction of the conductor layer 11.