摘要:
An integrated circuit structure includes a substrate having a top surface; a first conductive layer over and contacting the top surface of the substrate; a dielectric layer over and contacting the first conductive layer, wherein the dielectric layer includes an opening exposing a portion of the first conductive layer; and a proof-mass in the opening and including a second conductive layer at a bottom of the proof-mass. The second conductive layer is spaced apart from the portion of the first conductive layer by an air space. Springs anchor the proof-mass to portions of the dielectric layer encircling the opening. The springs are configured to allow the proof-mass to make three-dimensional movements.
摘要:
System and method for forming a structure including a MEMS device structure. In order to prevent warpage of a substrate arising from curing process for a sacrificial material (such as a photoresist), and from subsequent high temperature process steps, an improved sacrificial material comprises (i) a polymer and (ii) a foaming agent or special function group. The structure can be formed by forming a trench in a substrate and filling the trench with a sacrificial material. The sacrificial material includes (i) a polymer and (ii) a foaming agent or special function group. After further process steps are completed, the sacrificial material is removed from the trench.
摘要:
A metal-ceramic multilayer structure is provided. The underlying layers of the metal/ceramic multilayer structure have sloped sidewalls such that cracking of the metal-ceramic multilayer structure may be reduced or eliminated. In an embodiment, a layer immediately underlying the metal-ceramic multilayer has sidewalls sloped less than 75 degrees. Subsequent layers underlying the layer immediately underlying the metal/ceramic layer have sidewalls sloped greater than 75 degrees. In this manner, less stress is applied to the overlying metal/ceramic layer, particularly in the corners, thereby reducing the cracking of the metal-ceramic multilayer. The metal/ceramic multilayer structure includes one or more alternating layers of a metal seed layer and a ceramic layer.
摘要:
When a native oxide grows on a polysilicon member of, e.g., a MEMS device, delamination between the polysilicon member and subsequently formed layers may occur because the native oxide is undercut during removal of sacrificial oxide layers. Nitriding the native oxide increases the etch selectivity relative the sacrificial oxide layers. Undercutting and delamination is hence reduced or eliminated altogether.
摘要:
A circuit structure includes a substrate; a first amorphous silicon layer over the substrate; a first glue layer over and adjoining the first amorphous silicon layer; and a second amorphous silicon layer over and adjoining the first glue layer.
摘要:
MEMS devices and methods of fabrication thereof are described. In one embodiment, the MEMS device includes a bottom alloy layer disposed over a substrate. An inner material layer is disposed on the bottom alloy layer, and a top alloy layer is disposed on the inner material layer, the top and bottom alloy layers including an alloy of at least two metals, wherein the inner material layer includes the alloy and nitrogen. The top alloy layer, the inner material layer, and the bottom alloy layer form a MEMS feature.
摘要:
A bond free of an anti-stiction layer and bonding method is disclosed. An exemplary method includes forming a first bonding layer; forming an interlayer over the first bonding layer; forming an anti-stiction layer over the interlayer; and forming a liquid from the first bonding layer and interlayer, such that the anti-stiction layer floats over the first bonding layer. A second bonding layer can be bonded to the first bonding layer while the anti-stiction layer floats over the first bonding layer, such that a bond between the first and second bonding layers is free of the anti-stiction layer.
摘要:
A device includes a substrate, a routing conductive line over the substrate, a dielectric layer over the routing conductive line, and an etch stop layer over the dielectric layer. A Micro-Electro-Mechanical System (MEMS) device has a portion over the etch stop layer. A contact plug penetrates through the etch stop layer and the dielectric layer. The contact plug connects the portion of the MEMS device to the routing conductive line. An escort ring is disposed over the etch stop layer and under the MEMS device, wherein the escort ring encircles the contact plug.
摘要:
A structure comprises a first semiconductor substrate, a first bonding layer deposited on a bonding side the first semiconductor substrate, a second semiconductor substrate stacked on top of the first semiconductor substrate and a second bonding layer deposited on a bonding side of the second semiconductor substrate, wherein the first bonding layer is of a horizontal length greater than a horizontal length of the second semiconductor substrate, and wherein there is a gap between an edge of the second bonding layer and a corresponding edge of the second semiconductor substrate.
摘要:
A method of forming an integrated circuit structure including providing a wafer comprising a front surface and a back surface, wherein the wafer comprises a chip; forming an opening extending from the back surface into the chip; filling an organic material in the opening, wherein substantially no portion of the organic material is outside of the opening and on the back surface of the wafer; and baking the organic material to cause a contraction of the organic material.