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.
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:
An integrated circuit structure includes a triple-axis accelerometer, which further includes a proof-mass formed of a semiconductor material; a first spring formed of the semiconductor material and connected to the proof-mass, wherein the first spring is configured to allow the proof-mass to move in a first direction in a plane; and a second spring formed of the semiconductor material and connected to the proof-mass. The second spring is configured to allow the proof-mass to move in a second direction in the plane and perpendicular to the first direction. The triple-axis accelerometer further includes a conductive capacitor plate including a portion directly over, and spaced apart from, the proof-mass, wherein the conductive capacitor plate and the proof-mass form a capacitor; an anchor electrode contacting a semiconductor region; and a transition region connecting the anchor electrode and the conductive capacitor plate, wherein the transition region is slanted.
摘要:
An integrated circuit structure includes a capacitor, which further includes a first capacitor plate formed of polysilicon, and a second capacitor plate substantially encircling the first capacitor plate. The first capacitor plate has a portion configured to vibrate in response to an acoustic wave. The second capacitor plate is fixed and has slanted edges facing the first capacitor plate.
摘要:
An integrated circuit, a method of operating the integrated circuit, and a method of fabricating the integrated circuit are disclosed. According to one of the broader forms of the invention, a method and apparatus involve an integrated circuit that includes a heat transfer structure having a chamber that has a fluid disposed therein and that extends between a heat generating portion and a heat absorbing portion. Heat is absorbed into the fluid from the heat generating portion, and the fluid changes from a first phase to a second phase different from the first phase when the heat is absorbed. Heat is released from the fluid to the heat absorbing portion, and the fluid changes from the second phase to the first phase when the heat is released.
摘要:
An integrated circuit structure includes a triple-axis accelerometer, which further includes a proof-mass formed of a semiconductor material; a first spring formed of the semiconductor material and connected to the proof-mass, wherein the first spring is configured to allow the proof-mass to move in a first direction in a plane; and a second spring formed of the semiconductor material and connected to the proof-mass. The second spring is configured to allow the proof-mass to move in a second direction in the plane and perpendicular to the first direction. The triple-axis accelerometer further includes a conductive capacitor plate including a portion directly over, and spaced apart from, the proof-mass, wherein the conductive capacitor plate and the proof-mass form a capacitor; an anchor electrode contacting a semiconductor region; and a transition region connecting the anchor electrode and the conductive capacitor plate, wherein the transition region is slanted.
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.