metallization layer

metallization layer

The top layers of a chip that interconnect the transistors and resistors. There are usually two to four such layers made of aluminum that are separated by a silicon dioxide insulation layer. See copper chip.
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24 ppm/[degrees]C for Al, 2-3 ppm/[degrees]C for Si), their influence on the thermal expansion behaviour of Si with a thin metallization layer of Al is of a particular importance [18,19].
As a result of diffusion of these elements compaction of the upper metallization layer occurs.
The additional thick metallization layer offers benefits as well, mostly in the area of DC current routing/high power design and extending the usage of passive components to lower frequencies.
It applies a new metallization layer to reroute device leads to the edge of the device and then tests and thins the wafer.
The MLP process differs from a more standard wafer processing in that it incorporates the addition of a second low dielectric constant polyimide layer and a second thick gold metallization layer.
An imaging version of the same instrument lets you see inhomogeneities that are buried underneath opaque films, such as a metallization layer.
Common WLP processes include a final metallization layer used as an RDL that is often used in conjunction with an UBM.
The plasma FIB and proprietary Dx chemistry is used to expose metallization layers, allowing electrical fault isolation and analysis to be performed with the vendor's nanoprobing tools.
The 45-nm SOI process offers four transistor options (Regular, High Vt, Super High Vt, Ultra High Vt), in addition to up to 11 metallization layers.
These requirements are placing increasing demands on the precise control of advanced metallization schemes, particularly at the lower metallization layers on advanced CMOS devices.
For its 3D IC technology, IMEC uses a process flow where TSVs are realized in a single-damascene process that is performed immediately after front-end and contact processing but prior to processing of the back-end metallization layers.