| 摘要 |
PURPOSE:To enable to easily find a defective lead terminal of each string of lead terminals by a method wherein each lead terminal of a connected group of lead terminals is held in a conductively independent state in advance and before the string of lead terminals is sealed using a resin, a checking on the electric characteristics of each lead terminal is performed using an independent lead terminal. CONSTITUTION:Each group 11 of lead terminals has an island 1, whereon an integrated circuit chip[ 5 is mounted, and lead terminals 2 and 2 disposed in such a way that the points of the lead terminals 2 and 2 gather around the periphery of the island 1. A large number of the string of lead terminals sectioned by unit in such a way as to correspond to one integrated circuit are formed in a row continuously in a multi tape form by a coupling strip 3 and an insulative tie bar 4. The integrated circuit chip 5 is mounted on each island 1, and the electrodes of the chip 5 and the inner end parts of the lead terminals, which correspond to the electrodes of the chip 5, are mutually connected using fine metal wires 6. The connecting lead of a tester 7 is connected to the lead terminals 2 and 2 and the island supporting lead and a check on the lectrical characteristics of the lead terminals is performed. At this time, when a defective lead terminal is found, the defective is repaired or exchanged. Then, a sealing is performed on each group of lead terminals sectioned by unit using a sealing resin 8, the supporting lead is cut off and the insulative tie bar is removed. |
