Abstract:
A microelectronic package may include front and rear covers (46', 60') overlying the front and rear surfaces of a microelectronic element (22') such as an infrared sensor and spaces between the microelectronic element and the covers to provide thermal isolation. A sensing unit including a microelectronic package may include a reflector (76) spaced from the front cover to provide an analyte space, and the microelectronic element may include an emitter (28) and a detector (30) so that radiation directed from the emitter will be reflected by the sensor to the detector, and such radiation will be affected by the properties of the analyte in the analyte space. Such a unit provides a compact, economical chemical sensor. Other packages include elements such as valves (515, 521) for passing fluids into and out of the spaces within the package itself.
Abstract:
Provided are connection structures for a microelectronic device and methods for forming the structure. A substrate (10) is included having opposing surfaces and a plurality of holes (12A-D) extending through the surfaces. Also included is a plurality of electrically conductive posts (18A-D). Each post extends from a base to a tip located within a corresponding hole of the substrate. An additional substrate (20) may be provided such that the base of each post is located on a surface thereof. Additional electrically conductive posts (28A-D) may be provided having tips in corresponding holes (22A-D) of the additional substrate. Optionally, a dielectric material may be placed between the substrate and the posts.
Abstract:
A microelectronic package includes a microelectronic element (80) having faces and contacts (83) and a flexible substrate (90) spaced from and overlying a first face (84) of the microelectronic element (82). The package (80) also includes a plurality of conductive posts (98) extending from the flexible substrate (90) and projecting away from the first face (84) of the microelectronic element (82), wherein at least some of the conductive posts (98) are electrically interconnected with the microelectronic element (82), and a plurality of support elements (88) supporting the flexible substrate (90) over the microelectronic element (82). The conductive posts (98) are offset from the support elements (82) to facilitate flexure of the substrate (90) and movement of the posts (98) relative to the microelectronic element (82).
Abstract:
An ultra thin system-in-a-package (SIP) with independent test and repair capability comprises an interposer (350) having arranged on a top surface (351) and a bottom surface (352) thereof a number of packaged semiconductor chips (315, 320, 325, 330) mounted via solder bumps (335) in accordance with a Land Grid Array (LGA) format and wherein no underfill is used on the SIP.
Abstract:
An ultra thin system-in-a-package (SIP) with independent test and repair capability comprises an interposer (350) having arranged on a top surface (351) and a bottom surface (352) thereof a number of packaged semiconductor chips (315, 320, 325, 330) mounted via solder bumps (335) in accordance with a Land Grid Array (LGA) format and wherein no underfill is used on the SIP.
Abstract:
A stacked microelectronic assembly comprises a continuous sheet (20) including a core panel (26) and a plurality of side panels (28, 30, 32, 34), each having a folded portion (28a’, 30a’, 32a’, 34a’) that connects the side panel to an edge of the core panel. At least two of the panels are at least partially horizontally aligned with one another in a stack. During manufacture of a stacked microelectronic assembly, failed microelectronic elements are identified and associated side panels thereof are simply cut-off. This results in the production of a usable stacked microelectronic assembly albeit of reduced capacity, or reduced functionality.
Abstract:
A microelectronic package 10 is fabricated by a process which included folding a substrate 20. The substrate 20 is folded by engaging a first end 23 of the substrate 20 with a die 60 so that the first end 23 pivots with respect to a central portion 22 of the substrate 20. Next, a second end 24 of the substrate 20 is folded similar to the first end 23.
Abstract:
A microelectronic package is made by a process which includes folding a substrate (20). Alignment elements (54, 58) on different parts of the substrate (20) engage one another during the folding process to position the parts of the substrate (20) precisely relative to one another. One or more of the alignment elements (54, 58) may be a mass of an overmolding encapsulant covering a chip.
Abstract:
A packaged semiconductor chip includes features such as a chip carrier (616) having a large thermal conductor (620) which can be solder-bonded to a circuit board so as to provide enhanced thermal conductivity to the circuit board and electromagnetic shielding and a conductive enclosure (671) which partially or completely surrounds the packaged chip to provide additional heat dissipation and shielding. The packaged unit may include both an active semiconductor chip (614) and a passive element (615), desirably in the form of a chip, which includes resistors and capacitors. Inductors may be provided in whole or in part on the chip carrier. A module includes two circuits and an enclosure with a medial wall between the circuits to provide electromagnetic shielding between the circuits.
Abstract:
A microelectronic connection component includes a dielectric sheet (34) having an area array of elongated, strip-like leads (60). Each lead has a terminal end (66) fastened to the sheet and a tip end (68) detachable from the sheet. Each lead extends horizontally parallel to the sheet, from its terminal end to its tip end. The tip ends are attached to a second element, such as another dielectric sheet or a semiconductor wafer (86). The first and second elements are then moved relative to one another to advance the tip end of each lead vertically away from the dielectric sheet and deform the leads into a bent, vertically extensive configuration. The preferred structures provide semiconductor chip assemblies with a planar area array of contacts on the chip, an array of terminals on the sheet positioned so that each terminal is substantially over the corresponding contact, and an array of metal S-shaped ribbons connected between the terminals and contacts. A compliant dielectric material may be provided between the sheet and chip, substantially surrounding the S-shaped ribbons.