Patent ID: 9508650
Filing Date: 2016-11-29
CPC Classification: G06F,H01L

Claim Text:
1. A semiconductor device, comprising: a semiconductor substrate; a wiring layer formed over the semiconductor substrate and extending in a first direction from a top view; a first plurality of first dummy patterns arranged in a line extending in the first direction, the first plurality of first dummy patterns being disposed in a same layer as the wiring layer, each of the first plurality of first dummy patterns having a first length in the first direction and a first width in a second direction perpendicular to the first direction, and having a substantially square shape; and a second dummy pattern placed between the wiring layer and the first plurality of first dummy patterns, the second dummy pattern being disposed in a same layer as the wiring layer and comprising a first portion extending in the first direction, the first portion having a second length greater than the first length in the first direction, and a second width in the second direction, wherein the first dummy patterns have a shape different from a shape of the second dummy pattern.