Abstract:
A microelectromechanical system (MEMS) structure and method of forming the MEMS device, including forming a first metallization structure over a complementary metal-oxide-semiconductor (CMOS) wafer, where the first metallization structure includes a first sacrificial oxide layer and a first metal contact pad. A second metallization structure is formed over a MEMS wafer, where the second metallization structure includes a second sacrificial oxide layer and a second metal contact pad. The first metallization structure and second metallization structure are then bonded together. After the first metallization structure and second metallization structure are bonded together, patterning and etching the MEMS wafer to form a MEMS element over the second sacrificial oxide layer. After the MEMS element is formed, removing the first sacrificial oxide layer and second sacrificial oxide layer to allow the MEMS element to move freely about an axis.
Abstract:
In some embodiments, the present disclosure relates to a piezomicroelectromechanical system (piezoMEMS) device that includes a second piezoelectric layer arranged over the first electrode layer. A second electrode layer is arranged over the second piezoelectric layer. A first contact is arranged over and extends through the second electrode layer and the second piezoelectric layer to contact the first electrode layer. A dielectric liner layer is arranged directly between the first contact and inner sidewalls of the second electrode layer and the second piezoelectric layer. A second contact is arranged over and electrically coupled to the second electrode layer, wherein the second contact is electrically isolated from the first contact.
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:
In some embodiments, the present disclosure relates to a MEMs (micro-electromechanical system) package device having a getter layer. The MEMs package includes a first substrate having a cavity located within an upper surface of the first substrate. The cavity has roughened interior surfaces. A getter layer is arranged onto the roughened interior surfaces of the cavity. A bonding layer is arranged on the upper surface of the first substrate on opposing sides of the cavity, and a second substrate bonded to the first substrate by the bonding layer. The second substrate is arranged over the cavity. The roughened interior surfaces of the cavity enables more effective absorption of residual gases, thereby increasing the efficiency of a gettering process.
Abstract:
The present disclosure relates to a method of gettering that provides for a high efficiency gettering process by depositing a gettering material on a roughened substrate surface, and an associated apparatus. In some embodiments, the method is performed by providing a substrate into a processing chamber having residual gases. One or more cavities are formed in the substrate at locations between bonding areas on a top surface of the substrate. Respective cavities have roughened interior surfaces that vary in a plurality of directions. A getter layer is deposited into the one or more cavities. The roughened interior surfaces of the one or more cavities enable the substrate to more effectively absorb the residual gases, thereby increasing the efficiency of the gettering process.
Abstract:
A method includes performing a plasma activation on a surface of a first package component, removing oxide regions from surfaces of metal pads of the first package component, and performing a pre-bonding to bond the first package component to a second package component.
Abstract:
In some embodiments, the present disclosure relates to a method for forming a microelectromechanical system (MEMS) device, including depositing a first electrode layer over a first piezoelectric layer. A hard mask layer is then deposited over the first electrode layer. A photoresist mask is formed on the hard mask layer with a first-electrode pattern. Using the photoresist mask, a first etch is performed into the hard mask layer to transfer the first-electrode pattern to the hard mask layer. The photoresist mask is then removed. A second etch is performed using the hard mask layer to transfer the first-electrode pattern to the first electrode layer, and the hard mask layer is removed.
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:
In some embodiments, the present disclosure relates to a method for forming a microelectromechanical system (MEMS) device, including depositing a first electrode layer over a first piezoelectric layer. A hard mask layer is then deposited over the first electrode layer. A photoresist mask is formed on the hard mask layer with a first-electrode pattern. Using the photoresist mask, a first etch is performed into the hard mask layer to transfer the first-electrode pattern to the hard mask layer. The photoresist mask is then removed. A second etch is performed using the hard mask layer to transfer the first-electrode pattern to the first electrode layer, and the hard mask layer is removed.
Abstract:
A microelectromechanical system (MEMS) structure and method of forming the MEMS device, including forming a first metallization structure over a complementary metal-oxide-semiconductor (CMOS) wafer, where the first metallization structure includes a first sacrificial oxide layer and a first metal contact pad. A second metallization structure is formed over a MEMS wafer, where the second metallization structure includes a second sacrificial oxide layer and a second metal contact pad. The first metallization structure and second metallization structure are then bonded together. After the first metallization structure and second metallization structure are bonded together, patterning and etching the MEMS wafer to form a MEMS element over the second sacrificial oxide layer. After the MEMS element is formed, removing the first sacrificial oxide layer and second sacrificial oxide layer to allow the MEMS element to move freely about an axis.