| 摘要 |
<p>PURPOSE:To improve the insulating strength of a transparent insulating resin in a photocoupling semiconductor device without lowering the photocoupling sensitivity by providing an intermediate layer with opaque insulating resin having large adhering strength with the transparent insulating resin therein. CONSTITUTION:There are coated opaque insulating resin becoming no surface electrically in the boundary with a transparent insulating resin layer 7 on the surface of the layer 7 as well as on the input side external lead conductors 2a, 2b, output side external lead conductors 5a, 5b, input side internal lead wire 3 and output side internal lead wire 6 on the required surface to form an intermediate opaque insulating resin layer 9 thereon.</p> |
