Abstract:
A microelectromechanical systems (MEMS) package includes a eutectic bonding structure free of a native oxide layer and an anti-stiction layer, while also including a MEMS device having a top surface and sidewalls lined with the anti-stiction layer. The MEMS device is arranged within a MEMS substrate having a first eutectic bonding substructure arranged thereon. A cap substrate having a second eutectic bonding substructure arranged thereon is eutectically bonded to the MEMS substrate with a eutectic bond at the interface of the first and second eutectic bonding substructures. The anti-stiction layer lines a top surface and sidewalls of the MEMS device, but not the first and second eutectic bonding substructures. A method for manufacturing the MEMS package and a process system for selective plasma treatment are also provided.
Abstract:
The present disclosure relates to a MEMS device with a hermetic sealing structure, and an associated method. In some embodiments, a first die and a second die are bonded at a bond interface region to form a chamber. A conformal thin film structure is disposed covering an outer sidewall of the bond interface region to provide hermetic sealing. In some embodiments, the conformal thin film structure is a continuous thin layer covering an outer surface of the second die and a top surface of the first die. In some other embodiments, the conformal thin film structure comprises several discrete thin film patches disposed longitudinal.
Abstract:
A method for manufacturing a microelectromechanical systems (MEMS) device is provided. According to some embodiments of the method, a semiconductor structure is provided. The semiconductor structure includes an integrated circuit (IC) substrate, a dielectric layer arranged over the IC substrate, and a MEMS substrate arranged over the IC substrate and the dielectric layer to define a cavity between the MEMS substrate and the IC substrate. The MEMS substrate includes a MEMS hole in fluid communication with the cavity and extending through the MEMS substrate. A sealing layer is formed over or lining the MEMS hole to hermetically seal the cavity with a reference pressure while the semiconductor structure is arranged within a vacuum having the reference pressure. The semiconductor structure resulting from application of the method is also provided.
Abstract:
A method for manufacturing a microelectromechanical systems (MEMS) device is provided. According to the method, a semiconductor structure is provided. The semiconductor structure includes an integrated circuit (IC) substrate, a dielectric layer arranged over the IC substrate, and a MEMS substrate arranged over the IC substrate and the dielectric layer to define a cavity between the MEMS substrate and the IC substrate. The MEMS substrate includes a MEMS hole in fluid communication with the cavity and extending through the MEMS substrate. A sealing layer is formed over or lining the MEMS hole to hermetically seal the cavity with a reference pressure while the semiconductor structure is arranged within a vacuum having the reference pressure. The semiconductor structure resulting from application of the method is also provided.
Abstract:
The present disclosure relates to a micro-electro mechanical system (MEMS) package and a method of achieving differential pressure adjustment in multiple MEMS cavities at a wafer-to-wafer bonding level. A device substrate comprising first and second MEMS devices is bonded to a capping substrate comprising first and second recessed regions. A ventilation trench is laterally spaced apart from the recessed regions and within the second cavity. A sealing structure is arranged within the ventilation trench and defines a vent in fluid communication with the second cavity. A cap is arranged within the vent to seal the second cavity at a second gas pressure that is different than a first gas pressure of the first cavity.
Abstract:
The present disclosure relates to a micro-electro mechanical system (MEMS) package and a method of achieving differential pressure adjustment in multiple MEMS cavities at a wafer-to-wafer bonding level. A device substrate comprising first and second MEMS devices is bonded to a capping substrate comprising first and second recessed regions. A ventilation trench is laterally spaced apart from the recessed regions and within the second cavity. A sealing structure is arranged within the ventilation trench and defines a vent in fluid communication with the second cavity. A cap is arranged within the vent to seal the second cavity at a second gas pressure that is different than a first gas pressure of the first cavity.
Abstract:
A method for manufacturing a microelectromechanical systems (MEMS) device is provided. According to some embodiments of the method, a semiconductor structure is provided. The semiconductor structure includes an integrated circuit (IC) substrate, a dielectric layer arranged over the IC substrate, and a MEMS substrate arranged over the IC substrate and the dielectric layer to define a cavity between the MEMS substrate and the IC substrate. The MEMS substrate includes a MEMS hole in fluid communication with the cavity and extending through the MEMS substrate. A sealing layer is formed over or lining the MEMS hole to hermetically seal the cavity with a reference pressure while the semiconductor structure is arranged within a vacuum having the reference pressure. The semiconductor structure resulting from application of the method is also provided.
Abstract:
The present disclosure is directed to a monolithic MEMS (micro-electromechanical system) platform having a temperature sensor, a pressure sensor and a gas sensor, and an associated method of formation. In some embodiments, the MEMS platform includes a semiconductor substrate having one or more transistor devices and a temperature sensor. A dielectric layer is disposed over the semiconductor substrate. A cavity is disposed within an upper surface of the dielectric layer. A MEMS substrate is arranged onto the upper surface of the dielectric layer and has a first section and a second section. A pressure sensor has a first pressure sensor electrode that is vertically separated by the cavity from a second pressure sensor electrode within the first section of a MEMS substrate. A gas sensor has a polymer disposed between a first gas sensor electrode within the second section of a MEMS substrate and a second gas sensor electrode.
Abstract:
Some embodiments relate to multiple MEMS devices that are integrated together on a single substrate. A device substrate comprising first and second micro-electro mechanical system (MEMS) devices is bonded to a capping structure. The capping structure comprises a first cavity arranged over the first MEMS device and a second cavity arranged over the second MEMS device. The first cavity is filled with a first gas at a first gas pressure. The second cavity is filled with a second gas at a second gas pressure, which is different from the first gas pressure. A recess is arranged within a lower surface of the capping structure. The recess abuts the second cavity. A vent is arranged within the capping structure. The vent extends from a top of the recess to the upper surface of the capping structure. A lid is arranged within the vent and configured to seal the second cavity.
Abstract:
A method for manufacturing a microelectromechanical systems (MEMS) device is provided. According to the method, a semiconductor structure is provided. The semiconductor structure includes an integrated circuit (IC) substrate, a dielectric layer arranged over the IC substrate, and a MEMS substrate arranged over the IC substrate and the dielectric layer to define a cavity between the MEMS substrate and the IC substrate. The MEMS substrate includes a MEMS hole in fluid communication with the cavity and extending through the MEMS substrate. A sealing layer is formed over or lining the MEMS hole to hermetically seal the cavity with a reference pressure while the semiconductor structure is arranged within a vacuum having the reference pressure. The semiconductor structure resulting from application of the method is also provided.