Patent ID: 8580597

Claim:
A method for making a microelectronic device including, on a same substrate, at least one electro-mechanical component including a mobile structure of a monocrystalline semi-conductor material and an actuation and/or detection structure for actuating and/or detecting the mobile structure movements, and with at least one transistor having a gate connected to the mobile structure and made of the monocrystalline semi-conductor material, the method comprising: a) providing a substrate including at least a first semi-conducting layer including at least one channel region in which a channel of the transistor is provided, the first semi-conducting layer being covered with an insulating layer, the insulating layer being covered with a second semi-conducting layer based on the monocrystalline semi-conductor material; and b) etching the second semi-conducting layer, so as to form in the second semi-conducting layer at least one mobile structure pattern for the component, and at least one gate pattern for the transistor, the gate pattern being on a gate dielectric area located facing the channel region provided in the first semi-conducting layer, the mobile structure pattern and the gate pattern being connected to each other by the second semi-conducting layer based on the monocrystalline semi-conductor material.