Abstract:
A thin film inductor according to one embodiment includes one or more arms; one or more conductors passing through each arm; a first ferromagnetic yoke wrapping partially around the one or more conductors in a first of the one or more arms, the first ferromagnetic yoke comprising a magnetic top section, a magnetic bottom section, and via regions positioned on opposites sides of the one or more conductors in the first of the one or more arms, wherein the magnetic top section and magnetic bottom section are coupled together through a low reluctance path in the via regions; and one or more non-magnetic gaps between the top section and the bottom section in at least one of the via regions. Additional systems and methods are also provided.
Abstract:
A method of modifying via and solder ball shapes for maximizing semiconductor chip or silicon carrier strengths relative to thermal expansion and bending load zero points. The method entails modifying circular annular vias into elliptical annular vias so as to reduce stress concentration factors in the chip or carrier at the vias and solder balls. The reduction in the stress concentration is effected in the semiconductor chip or silicon carrier in regions proximate the vias and in wiring layers at the ends of the vias.
Abstract:
An apparatus and method providing flexibility to a silicon chip carrier which, in at least one embodiment, comprises multiple chips and a silicon chip carrier having thinned regions between some adjacent chips, thus, allowing for increased flexibility and reduced package warpage.
Abstract:
A mechanism for servowriting on a storage medium of a storage device. The storage device has a transducer and a servo loop for positioning the transducer with respect to the storage medium. At least one transition is written on a track of the storage medium, while servoing on other transitions previously recorded on the storage medium. A reference waveform is derived as a function of a closed loop response of the servo loop and a position error waveform. The position error waveform corresponds to one or more position errors of the transducer relative to the previously recorded transitions. The reference waveform is usable in writing subsequent tracks on the storage medium. Using the reference waveform for writing subsequent tracks provides a substantial rejection of mechanical disturbances by the servo loop.
Abstract:
Deep via technology is used to construct an integrated silicon cantilever and cavity oriented in a vertical plane which creates an electrostatically-switched MEMS switch in a small wafer area. Another embodiment is a small wafer area electrostatically-switched, vertical-cantilever MEMS switch wherein the switch cavity is etched within a volume defined by walls grown internally within a silicon substrate using through vias.
Abstract:
A thin film coupled inductor, a thin film spiral inductor, and a system that includes an electronic device and a power supply or power converter incorporating one or more such inductors. A thin film coupled inductor includes a wafer substrate; a bottom yoke comprising a magnetic material above the wafer substrate; a first insulating layer above the bottom yoke; a first conductor above the bottom yoke and separated therefrom by the first insulating layer; a second insulating layer above the first conductor; a second conductor above the second insulating layer; a third insulating layer above the second conductor; and a non-planar top yoke above the third insulating layer, the top yoke comprising a magnetic material.
Abstract:
A through silicon via with sidewall roughness and methods of manufacturing the same are disclosed. The method includes forming a via in a substrate and roughening a sidewall of the via by depositing material within the via. The method further includes removing a backside of the substrate to form a through via with a roughened sidewall structure.
Abstract:
A template having tapered openings can be employed to enable injection of underfill material through gaps having a width less than a lateral dimension of an injector needle for the underfill material. Each tapered opening has a first lateral dimension on an upper side and a second lateral dimension on a lower side. Compliant material portions can be employed to accommodate variations in distance between the template and stacked semiconductor chips and/or an injector head. Optionally, another head can be employed to apply compressed gas to push out the underfill material after the underfill material is applied to the gaps. Multiple injector heads can be employed to simultaneously inject the underfill material at different sites. An adhesive layer can be substituted for the at least one lower compliant material portion.
Abstract:
Semiconductor integrated magnetic devices such as inductors, transformers, etc., having laminated magnetic-insulator stack structures are provided, wherein the laminated magnetic-insulator stack structures are formed using electroplating techniques. For example, an integrated laminated magnetic device includes a multilayer stack structure having alternating magnetic and insulating layers formed on a substrate, wherein each magnetic layer in the multilayer stack structure is separated from another magnetic layer in the multilayer stack structure by an insulating layer, and a local shorting structure to electrically connect each magnetic layer in the multilayer stack structure to an underlying magnetic layer in the multilayer stack structure to facilitate electroplating of the magnetic layers using an underlying conductive layer (magnetic or seed layer) in the stack as an electrical cathode/anode for each electroplated magnetic layer in the stack structure.
Abstract:
A thin film inductor according to one embodiment includes a bottom yoke; a first insulating layer above the bottom yoke; one or more conductors above the bottom yoke and separated therefrom by the first insulating layer; a second insulating layer above the one or more conductors; a third insulating layer above the second insulating layer; and a top yoke above the third insulating layer. A thin film inductor according to another embodiment includes a bottom yoke; a first insulating layer above the bottom yoke, the first insulating layer being polymeric; one or more conductors above the bottom yoke and separated therefrom by the first insulating layer; an upper insulating layer above the one or more conductors, the upper insulating layer being polymeric; and a top yoke above the second insulating layer.