Patent ID: 7642624
Filing Date: 2010-01-05
Classification: H01L

Abstract:
1. A semiconductor device, comprising: a substrate; a first multilayer interconnection structure formed on said substrate; a second multilayer interconnection structure formed on said first multilayer interconnection structure, said first multilayer interconnection structure comprising: a first guard ring extending continuously in said first multilayer interconnection structure along a periphery of said substrate; and a second guard ring extending continuously in said first multilayer interconnection structure inside along said periphery so as to be encircled by said first guard ring, said second guard ring encircling an interconnection pattern inside said first multilayer interconnection structure, said first multilayer interconnection structure comprising: a bridging conductor pattern extending over a band form region between said first and second guard rings continuously, said bridging conductor pattern mechanically connecting said first and second guard rings with each other; and a third guard ring formed over said bridging conductor pattern.