Patent ID: 7385143

Claim:
A bonding structure for a flexible printed circuit board, comprising: a first insulating layer; a first conductive layer laminated over the first insulating layer, wherein the first insulating layer has an opening formed therethrough exposing the first conductive layer to define a solder pad area thereat; a solder paste disposed on the solder pad area: a second insulating layer laminated over the first conductive layer; a second conductive layer laminated over the second insulating layer; at least one plated through hole formed through the first conductive layer, the second insulating layer, and the second conductive layer, the at least one plated through hole being adjacent to the solder pad area; and a third insulating layer laminated over the second conductive layer, the third insulating layer having an opening formed therethrough exposing the second conductive layer in aligned relationship with the solder pad area to define a bonding head receiving area thereat, whereby heat energy applied to the bonding head receiving area by a bonding head is conducted from the second conductive layer by the at least one plated through hole and the first conductive layer to the solder paste at the solder pad area.