Patent ID: 9365417
Filing Date: 2016-06-14
CPC Classification: B81C

Claim Text:
1. A method for manufacturing a micromechanical component, comprising: in a first manufacturing step, applying a first material layer including a first joining partner to a first wafer; in a second manufacturing step, applying a second material layer including a second joining partner to a second wafer; in a third manufacturing step, producing a micromechanical structure in the first wafer by gas phase etching with the aid of a gaseous etching medium, wherein the gaseous etching medium is applied to the first joining partner during the gas phase etching; in a fourth manufacturing step, joining the first and second wafers in such a way that the first joining partner and the second joining partner are in contact at least in some areas; and in a fifth manufacturing step, heating the first and second joining partners to integrally join the first and second joining partners to form a connecting layer, an eutectic joining material being formed in the connecting layer from the first joining partner and the second joining partner; wherein in the third manufacturing step, the micromechanical structure is exposed by gas phase etching with the aid of the gaseous etching medium, a sacrificial layer in the first material layer being removed; and wherein in the third manufacturing step, a first oxide layer of the first joining partner is removed by a first reduction reaction with the aid of the gaseous etching medium, and a first protective layer is generated on a surface of the first joining partner, the first oxide layer including an aluminum oxide material and the first protective layer including an aluminum fluoride material.