Patent ID: 8872352
Filing Date: 2014-10-28
Classification: H01L

Abstract:
1. A semiconductor device comprising: a substrate; a first insulating film formed on the substrate; an aluminum layer formed above the first insulating film; a first guard ring which includes a first groove-shaped via-hole formed in the first insulating film and a first conductor formed in the first groove-shaped via-hole, the first conductor being connected to the substrate; and a second guard ring which includes a second groove-shaped via-hole formed in the first insulating film and a second conductor formed in the second groove-shaped via-hole, the second conductor being connected to the substrate, wherein: the second guard ring is surrounded by the first guard ring in a plan view; the first guard ring is connected to the aluminum layer; 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 degree at each of four corners of the semiconductor device in a plan view.