Patent ID: 11958740
Assignee: ROBERT BOSCH GMBH
Field: Micro-structural and nano-technology (Chemistry)
Classification: CPC B  G | IPC B

Claim 4:
5. A method for producing a microelectromechanical sensor, the method comprising:
connecting a cap wafer with a sensor wafer, the cap wafer having a bonding structure for connecting the cap wafer with the sensor wafer, the sensor wafer having a sensor core having a movable structure, and the cap wafer having a stop structure configured to limit an excursion of the movable structure;
wherein the method has a first step and a second step following the first step, a hard mask being applied onto a subregion of the cap wafer in the first step, the masked subregion of the cap wafer defining a stop surface of the stop structure, a bonding layer being applied onto the cap wafer in the second step, and the bonding structure being produced by etching the bonding layer,
wherein, in a fifth step, following the second step, a recess for the formation of a cavern is produced by etching.