CONNECTION STRUCTURE BETWEEN FLAT BOARD AND CONNECTION TERMINAL AND ITS CONNECTION METHOD

PROBLEM TO BE SOLVED: To provide a connection structure for connecting between a flat board and a connection terminal, which is reliably connectable by penetrating a crimped piece of the connection terminal to a flat square conductor in spite of the flat board with a narrow pitch, and a connection method. SOLUTION: In the connection structure for connecting between a narrow-pitched FFC 20 and the piercing terminal 10 wherein a flat wiring conductor 22 and the piercing terminal 10 are electrically connected by penetrating the flat wiring conductor 22 covered by sandwiching with insulating sheets 21 from both sides in the vertical direction H in the narrow-pitched FFC 20 with the crimped piece 14 prepared on the piercing terminal 10, a contact upper end A between the crimped piece 14 penetrating the flat wiring conductor 22 and the flat wiring conductor 22 is melted and joined with a high energy density heat source using a laser beam. COPYRIGHT: (C)2011,JPO&INPIT