Taiwan Semiconductor Manufacturing Comp. Ltd.

Yu-Jui Chen

I-Shi Wang

Ren-Dou Lee

Jen-Hao Liu

Ting-Ying Chien

A method includes: providing a first substrate on which a plurality of first semiconductor devices is formed; providing a second substrate on which a plurality of second semiconductor devices is formed; and coupling the first and second substrates by contacting respective dummy pads of the first and second substrates, wherein at least one of the dummy pads of the first and second substrates comprises plural peaks and valleys.

MEMS package with roughend interface

The present disclosure relates to a method for manufacturing a microelectromechanical systems (MEMS) package. The method comprises providing a CMOS IC including CMOS devices arranged within a CMOS substrate. The method further comprises forming and patterning a metal layer over the CMOS substrate to form an anti-stiction layer and a fixed electrode plate and forming a rough top surface for the anti-stiction layer. The method further comprises providing a MEMS IC comprising a moveable mass arranged within a recess of a MEMS substrate and bonding the CMOS IC to the MEMS IC to enclose a cavity between the moveable mass and the fixed electrode plate and the anti-stiction layer.

Rough anti-stiction layer for MEMS device

The present disclosure relates to a MEMS package with a rough metal anti-stiction layer, to improve stiction characteristics, and an associated method of formation. In some embodiments, the MEMS package includes a MEMS IC bonded to a CMOS IC. The CMOS IC has a CMOS substrate and an interconnect structure disposed over the CMOS substrate. The interconnect structure includes a plurality of metal layers disposed within a plurality of dielectric layers. The MEMS IC is bonded to the CMOS IC, enclosing a cavity between the MEMS IC and the CMOS IC and a moveable mass arranged in the cavity. The MEMS package further includes an anti-stiction layer disposed under the moveable mass. The anti-stiction layer is made of metal and has a rough top surface.

The present disclosure relates to a MEMS package with a rough metal anti-stiction layer, to improve stiction characteristics, and an associated method of formation. In some embodiments, the MEMS package includes a MEMS IC bonded to a CMOS IC. The CMOS IC has a CMOS substrate and an interconnect structure disposed over the CMOS substrate. The interconnect structure includes a plurality of metal layers disposed within a plurality of dielectric layers. The MEMS IC is bonded to an upper surface of the interconnect structure and, in cooperation with the CMOS IC, enclosing a cavity between the MEMS IC and the CMOS IC. The MEMS IC has a moveable mass arranged in the cavity. The MEMS package further includes an anti-stiction layer disposed on the upper surface of the interconnect structure under the moveable mass. The anti-stiction layer is made of metal and has a rough top surface.

A micro electro mechanical system (MEMS) structure is provided, which includes a first substrate, a second substrate, a MEMS device and a hydrophobic semiconductor layer. The first substrate has a first portion. The second substrate is substantially parallel to the first substrate and has a second portion substantially aligned with the first portion. The MEMS device is between the first portion and the second portion. The hydrophobic semiconductor layer is made of germanium (Ge), silicon (Si) or a combination thereof on the first portion, the second portion or the first portion and the second portion and faces toward the MEMS device. A cap substrate for a MEMS device and a method of fabricating the same are also provided.

Growing community of inventors

Taipei, Taiwan

Yu-Jui Chen