| 摘要 |
PURPOSE:To realize a thin mounting without danger of wire disconnection by fusion-adhering a resin layer conducted by laser irradiation between the part of a circuit pattern and a connecting electrode, and electrically connecting both. CONSTITUTION:An electric component 13 having connecting electrodes 12 is provided on an alumina board 11, and a circuit pattern 14 is formed. The surface between the electrodes 12 and the pattern 14 is covered with a polybutadiene resin layer 15 mixed with TiO2 for preventing arrival of laser light to the board 11. Further, an acrylonitrile resin layer 15 containing metal particles is fusion-adhered to the whole surface. The layer 16 between the pattern 14 and the electrodes 12 is irradiated with a laser beam to be conducted and electrically connected. |
