Abstract:
A connecting wire having an electrically conductive core—preferably provided by a wire or ribbon—with a coating provided on the surface of the core, the coating being composed of a nitrogen-containing tantalum alloy or tungsten alloy, and also optionally containing silicon as an additional alloy component. The invention further relates to a manufacturing method for such a connecting wire.
Abstract:
A release resistant electrical interconnection comprising a gold-based electrical conductor compression bonded directly to a highly-doped polysilicon bonding pad in a MEMS, IMEMS, or MOEMS device, without using any intermediate layers of aluminum, titanium, solder, or conductive adhesive disposed in-between the conductor and polysilicon pad. After the initial compression bond has been formed, subsequent heat treatment of the joint above 363 C creates a liquid eutectic phase at the bondline comprising gold plus approximately 3 wt % silicon, which, upon re-solidification, significantly improves the bond strength by reforming and enhancing the initial bond. This type of electrical interconnection is resistant to chemical attack from acids used for releasing MEMS elements (HF, HCL), thereby enabling the use of a “package-first, release-second” sequence for fabricating MEMS devices. Likewise, the bond strength of an Au—Ge compression bond may be increased by forming a transient liquid eutectic phase comprising Au-12 wt % Ge.
Abstract:
There is provided a manufacturing method for a bonded body, comprising: preparing a substrate A having a surface on which a wiring line terminal is provided; forming a polyimide-containing precursor portion on the surface of the substrate A, where the wiring line terminal is provided on the surface of the substrate A; preparing a substrate B having a surface on which a wiring line terminal is provided; and bonding the surface of the substrate A, where the polyimide-containing precursor portion is provided on the surface of the substrate A, to the surface of the substrate B, where the wiring line terminal is provided on the surface of the substrate B, wherein a difference between a cyclization rate of a polyimide in the polyimide-containing precursor portion before the bonding of the surface of the substrate A and a cyclization rate of a polyimide in a polyimide-containing portion formed at a bonded portion after the bonding of the surface of the substrate A is 5% or more.
Abstract:
A bonding wire is provided containing a wire core made of a first material containing a metal and a wire jacket that envelopes the wire core and is made of a second material containing a metal. The wire core and the wire jacket are made of different metals and the bonding wire has an aspect ratio of no more than 0.8. The bonding wire efficiently prevents damage to bonding surfaces during the bonding process and short-circuiting during the use of corresponding sub-assemblies.
Abstract:
A connecting wire having an electrically conductive core, preferably provided by a wire or ribbon, with a coating provided on the surface of the core. The coating is composed of a nitrogen-containing tantalum alloy or tungsten alloy, and also optionally contains silicon as an additional alloy component. A manufacturing method for producing such a connecting wire involves passing a wire or ribbon core past a coating source to apply the coating.
Abstract:
A bonding wire and a bond using such a bonding wire. The contour of the cross-sectional area of the bonding wire has a shape deviating from a circle shape and from a rectangle shape having two sides of different length.
Abstract:
Shielded radio-frequency (RF) module having reduced area. In some embodiments, an RF module can include a packaging substrate configured to receive a plurality of components, and a plurality of shielding wirebonds implemented on the packaging substrate and configured to provide RF shielding functionality for one or more regions on the packaging substrate. The packaging substrate can include a first area associated with implementation of each shielding wirebond. The RF module can further include one or more devices mounted on the packaging substrate. The packaging substrate can further include a second area associated with mounting of each of the one or more devices. Each device can be mounted with respect to a corresponding shielding wirebond such that the second area associated with the device overlaps at least partially with the first area associated with the corresponding shielding wirebond.
Abstract:
In general, according to one embodiment, an integrated circuit device includes a first conductive member extending in a first direction, a second conductive member extending in the first direction, a first contact having a lower end connected to the first conductive member, and a second contact having a lower end connected to the second conductive member. A position of the first contact in the first direction is different from a position of the second contact in the first direction. Cross sections of the first contact and the second contact have longitudinal directions in a second direction as viewed from above. The second direction is from the first contact toward the second contact.
Abstract:
A gate electrode (4) and a source electrode (5) of a semiconductor chip (3) are connected to a gate terminal (7) and a source terminal (9), respectively, via electric conductors (11a and 11b). A portion of the gate terminal (7) which portion is joined to the electric conductor (11a) is close to the gate electrode (4), and a portion of the source terminal (9) which portion is joined to the electric conductor (11b) is close to the source electrode (5).
Abstract:
A microcircuit has a node thereon. A center conductor is electrically connected to the node and the center conductor has a length to minimum radius ratio of at least 50. A method of for providing electrical interconnections in a microcircuit, comprises the steps of depositing conductive bumps on the microcircuit; and aligning and bonding a center conductor to the conductive bumps, the center conductor having a first end and a second end, and the center conductor having a length to minimum radius ratio of at least 50.