| 摘要 |
PURPOSE:To prevent the corrosion of internal metallic fine wiring, by dissolving precoating resin previously solidified in a ring shape approximately equal to the outline of a pellet after temporarily adhering on the fringe of the pellet for covering only the fringe of the pellet. CONSTITUTION:The pellet 3 is fixed on a substrate 1 by solder 2 with the pre- coating regin 9 provided in a ring shape like a picture frame to fit to the outer boundary of the pellet 3 and previously solidified fitted to the pellet 3 for heating at low temperature of the pellet 3 and pre-coating resin 9. Then, the pre- coating resin 9 is softened to adhere on the fringe 10 of the pellet 3 later to naturally cool for solidified pre-coating resin under a state of covering over the fringe 10 for bonding between an electrode on the pellet 3 and an external take- out lead 4 by an Al fine wire. Thus, since a metallic wire is not contacted on the pre-coating resin, the metallic wire is not fragile with the prevention of disconnection. |
