Semiconductor device and a method of manufacturing same
In a semiconductor device where a metal circuit layer is disposed over a main planar surface of an insulating substrate, a semiconductor chip is connected by way of a solder over the metal circuit layer, and a metal wiring is connected over the metal circuit layer, in which a solder flow prevention area comprising a linear oxide material is formed between the semiconductor chip and the ultrasonic metal bonding region over the metal circuit layer.
1. A semiconductor device in which a metal circuit layer is provided over a main planar surface of an insulating substrate, a semiconductor chip is soldered to the metal circuit layer, and a metal wiring connection portion is connected over the metal circuit layer,
wherein a linear oxide material is formed in the metal circuit layer between the semiconductor chip and the metal wiring connection portion over the surface of the metal circuit layer.
2. The semiconductor device according to claim 1 , wherein the surface of the oxide material is roughened more than the surface of the metal circuit layer.
3. The semiconductor device according to claim 1 , wherein the oxide material is disposed so as to surround the semiconductor chip.
4. The semiconductor device according to claim 1 , wherein a mark is formed to the metal circuit layer.