Patent ID: 9406612
Filing Date: 2016-08-02
CPC Classification: H01L

Claim Text:
1. A semiconductor device comprising: a substrate that includes four corners; a first conductive layer formed above the substrate; a first guard ring formed above the substrate; and a second guard ring formed above the substrate, wherein: the first guard ring includes a first conductor and a second conductor; the second guard ring includes a third conductor and a fourth conductor; the first conductive layer is located above the first conductor and the third conductor; the second conductor and the fourth conductor are located above the first conductive layer; the first conductor, the second conductor, the third conductor and the fourth conductor are connected to the first conductive layer; the first conductor includes a first part that is bent twice at an inner angle of larger than 90 degrees at each of four corners of the device in a plan view; the second conductor includes a second part that is bent twice at an inner angle of larger than 90 degrees at each of the four corners in a plan view; the third conductor includes a third part that is bent twice at an inner angle of larger than 90 degrees at each of four corners of the device in a plan view; and the fourth conductor includes a fourth part that is bent twice at an inner angle of larger than 90 degrees at each of four corners of the device in a plan view.