Patent ID: 9406610
Filing Date: 2016-08-02
CPC Classification: H01L

Claim Text:
1. A semiconductor device comprising: a substrate; a first conductive layer formed above the substrate; a first guard ring, which includes a first conductor formed in a first groove-shaped via-hole in a first insulating film and connected to the substrate; and a second guard ring which includes a second conductor formed in a second groove-shaped via-hole in the first insulating film and connected to the substrate; wherein: the second guard ring is surrounded by the first guard ring in a plan view; the first conductor and the second conductor are connected to the first conductive layer; the first guard ring is connected to a first aluminum pattern; and each of the first conductor and the second conductor includes a pattern bent twice each time at an inner angle of larger than 90 degrees at each of four corners of the device in a plan view.