Patent ID: 9540231
Date: 2017-01-10
CPC Classifications: B81B,B81C

Claim:
1. A semiconductor device structure, comprising: a substrate, wherein the substrate comprises a micro electro mechanical system (MEMS) substrate or a semiconductor substrate; a cap substrate disposed above the substrate, wherein the cap substrate comprises an extending portion extending from a bottom surface of the cap substrate towards the substrate; an eutectic alloy formed between the cap structure and the substrate, wherein at least two of the outer sidewalls of the eutectic alloy are in direct contact with the cap substrate; and a bonding layer formed between the cap structure and the substrate, wherein the bonding layer is in contact with the extending portion and the substrate, wherein the eutectic alloy is made of a first material and a second material, and the bonding layer is made of one of the first material and the second material.