Patent ID: 6909184

Claim:
A semiconductor devices comprising: a semiconductor chip including a main surface on which pads are formed, and a rear surface opposite to the main surface; an insulating base comprising a main surface including a pad area and a peripheral area located outside the pad area, and a rear surface opposite to the main surface, the rear surface of the insulating base being adhered to the main surface of the semiconductor chip; conductive patterns formed on the main surface of the insulating base, the conductive patterns including bonding portions, pad portions and wiring portions connecting the bonding portions and the pad portions, the bonding portions being arranged in the peripheral area, the pad portions being arranged in the pad area, the wiring portions being arranged in both the peripheral area and the pad area; island-like patterns provided along the wiring portions of the peripheral area; outside electrodes provided on the pad portions of the conductive patterns, the outside electrodes being provided on the main surface of the insulating base, and a covering layer which covers those of the conductive patterns at least except the bonding portions and the pad portions, wherein an area of one of the island-like patterns is larger than an area of one of the pad portions and an intersection angle between an edge of the covering layer and one of the bonding portions is more than 90 degrees.