Abstract:
A device (100) for electrically interconnecting one or more semiconductor devices to provide for flexibility in wiring and preventing long or shorted leads and methods for fabricating and using same. The device (100) has a substrate (111) with a plurality of substantially concentric electrically-conductive paths (101, 103, 105, 107), each of the plurality of electrically-conductive paths (101, 103, 105, 107) being electrically isolated from each other and formed on a first surface of the substrate (111). At least one (107) of the plurality of electrically-conductive paths (101, 103, 105, 107) is arranged concentrically so as to substantially span a width of the first surface of the substrate (111). A plurality of bonding pads (109) is electrically coupled to each of the electricallyconductive paths (101, 103, 105, 107). The plurality of bonding pads is coupled to one of the electrically conductive paths and is electrically isolated from bonding pads located on any other electrically-conductive path (101, 103, 105, 107). The entire interconnect device (100) may be mounted in a standard leadframe product.
Abstract:
Any two segments of a wire bonded on two bond pads at different elevations can be distinguished by a stationary node (or zero-displacement) during its second-mode vibration. In order to boost the natural frequency of such a bond wire to avoid a second-mode resonance occurring at the lowest frequency in the in-plane vibration, a wire can be optimized by connecting two equalized (shortest possible) wire segments to replace a wire consisting of a larger segment and a shorter segment. The purpose is to re-distribute a larger vibration movement in the longer segment with a lower stiffness of an arbitrary bond wire to two smaller equalized segments of an optimized wire to reduce an in-plane vibration to significantly improve the wire natural frequency and reliability in a harsh vibration environment such as over 30 kHz.
Abstract:
This invention proposes optimizing the power connection between a semiconductor chip and the circuit board with a solid-state switch by bonding wires which constitute the input power path of the circuit element symmetrical to the circuit board. The length of the bonding wires is then the same and shorter than for the asymmetrical connection since bonding is done from both sides.
Abstract:
A microelectronic assembly (100) includes a semiconductor chip (110, 1110) having chip contacts (112) exposed at a first face and a substrate (130, 1130) juxtaposed with a face (128, 129) of the chip (110, 1110). A conductive bond element (144) can electrically connect a first chip contact (112) with a first substrate contact (132, 1132) of the substrate, and a second conductive bond element (146) can electrically connect the first chip contact (112, 132) with a second substrate contact. The first bond element (144) can have a first end (244A, 344A) metallurgically joined to the first chip contact (112, 212A) and a second end (244B, 344B) metallurgically joined to the first substrate contact. A first end (246A, 346A) of the second bond element can be metallurgically joined to the first bond element (212A). The second bond element may or may not touch the first chip contact (112, 212A, 1212) or the substrate contact (132, 1132). A third bond element (948) can be joined to ends of first and second bond elements which are joined to substrate contacts or to chip contacts. In one embodiment, a bond element (740) can have a looped connection, having first and second ends (742, 746) joined at a first contact (732A) and a middle portion (744) joined to a second contact (712A).
Abstract:
A chip package includes a radio-frequency passive-device layer disposed below a dielectric layer on that backside surface of the die in the chip package. The inductive loop between the active surface of the die and the radio-frequency passive-device layer is small because any radio-frequency passive device is directly below the footprint of the die. A method of assembling a radio-frequency passive device layer includes die-level and board-level radio-frequency passive device layers. A computing system includes a radio-frequency passive device layer in a chip package.
Abstract:
A packaging technique for multichip modules including a three dimensional stack of IC's (150) each having a beveled edge and a contact pad for electrically connecting the contact pads to a circuit substrate (160).