Patent ID: 11952263
Assignee: ROBERT BOSCH GMBH
Field: Micro-structural and nano-technology (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A micromechanical sensor device, comprising:
a cap substrate which has a first front side facing in a first direction and a first back side facing in a second direction, and which has a through-opening as a media entry region; and
a sensor substrate which has a second front side facing in the first direction and a second back side facing in the second direction, and in which a sensor region is entirely arranged, the sensor region being embedded in an island-like region of the sensor substrate suspended on a remaining region of the sensor substrate, the island-like region being mechanically decoupled from the remaining region of the sensor substrate by a lateral stress-relief trench and a cavity situated in the sensor substrate, underneath the island-like region;
wherein the first back side is bonded to the second front side in such a manner, that the through opening is situated above the sensor region; and
wherein the sensor region is covered by a gel, which fills the through-opening and the stress-relief trench at least partially, such that an exterior surface of the sensor region that faces in the first direction is exposed to the gel at the second front side.