摘要:
Provided are connection structures for a microelectronic device and methods for forming the structure. A substrate is included having opposing surfaces and a plurality of holes extending through the surfaces. Also included is a plurality of electrically conductive posts. Each post extends from a base to a tip located within a corresponding hole of the substrate. An additional substrate may be provided such that the base of each post is located on a surface thereof. Additional electrically conductive posts may be provided having tips in corresponding holes of the additional substrate. Optionally, a dielectric material may be placed between the substrate and the posts.
摘要:
A capped chip is provided in which a cap member has a bottom surface facing a front surface of the chip and a top surface opposite the front surface. A plurality of through holes is desirably provided in the cap member which extend from the bottom surface to the top surface. A plurality of metallic interconnects electrically connected to the chip are provided which project upwardly from the front surface of the chip at least partially through the through holes. Desirably, the metallic interconnects include stud bumps.
摘要:
A microelectronic package may include front and rear covers overlying the front and rear surfaces of a microelectronic element 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 spaced from the front cover to provide an analyte space, and the microelectronic element may include an emitter and a detector 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 for passing fluids into and out of the spaces within the package itself.
摘要:
A solder joint or seal attaching components having dissimilar coefficients of thermal expansion is made thin (e.g., less than 20 μm and preferably about 5 μm) and of a solder such as an indium-based solder that has a tendency to creep. The solder is toroidal or otherwise shaped to avoid tensile stress in the solder. Axial shearing stress in the solder causes reversible creep without causing failure of the joint or seal. In one embodiment, a toroidal solder seal has a diameter, a footprint, and a thickness in approximate proportions of 5000:200:1.
摘要:
A method of making a chip assembly is provided which includes the steps of: (a) assembling (i) a capped chip including a chip, a cap overlying a front surface of the chip and a sacrificial layer overlying the cap with (ii) one or more further components; and (b) after the assembling step, removing the sacrificial layer from the capped chip. A method of making a plurality of capped chip assemblies is provided which includes the steps of: (a) assembling a lid member and a chip member including a plurality of chips to one another so that the lid member overlies the chip member and a top surface of the lid member faces away from the chip member; (b) severing the lid member and chip member to form a plurality of individual units each including one or more of the chips and a portion of the lid member; (c) providing a sacrificial layer overlying the top surface of the lid member prior to the severing step; and (d) removing the sacrificial layer after the severing step.
摘要:
A capped chip is provided which includes a chip and a cap member, the chip having a front surface and a plurality of bond pads exposed at the front surface, the cap member having a bottom surface facing the front surface of the chip and having a top surface opposite the front surface. A plurality of through holes extend from the bottom surface of the cap member to the top surface. The capped chip assembly further includes a plurality of metallic interconnects extending from the bond pads at least partially through the through holes, the metallic interconnects including stud bumps joined to the bond pads, the stud bumps contacting and engaging at least one of (i) the top surface of the cap member surrounding the through holes and (ii) inner surfaces of the through holes.
摘要:
A thermal management apparatus includes an electrohydrodynamic fluid accelerator in which an emitter electrode and another electrode are energizable to motivate fluid flow. One of the electrodes includes a solid solution formed of a solvent metal having a first performance characteristic and a solute material having a second performance characteristic. The first and second performance characteristics are exhibited substantially independently in the electrode as the solvent metal and solute material remain substantially pure within the solid solution. A method of making an EHD product includes providing an electrode with such a solid solution and positioning the electrode relative to another electrode to motivate fluid flow when energized.
摘要:
A stacked microelectronic unit is provided which can include a plurality of vertically stacked microelectronic elements (12, 12A) each having a front surface (117), contacts (22) exposed at the front surface, a rear surface (118) and edges (18, 20) extending between the front and rear surfaces. Traces (24) connected with the contacts may extend along the front surfaces towards edges of the microelectronic elements with the rear surface of at least one of the stacked microelectronic elements being adjacent to a top face (90) of the microelectronic unit. A plurality of conductors (66) may extend along edges of the microelectronic elements from the traces (24) to the top face (90). The conductors may be conductively connected with unit contacts (76) such that the unit contacts overlie the rear surface (118) of the at least one microelectronic element (12A) adjacent to the top face.
摘要:
A microelectronic device includes a chip having a front surface and a rear surface, the front surface having an active region and a plurality of contacts exposed at the front surface outside of the active region. The device further includes a lid overlying the front surface. The lid has edges bounding the lid, at least one of the edges including one or more outer portions and one or more recesses extending laterally inwardly from the outer portions, with the contacts being aligned with the recesses and exposed through them.
摘要:
Provided are connection structures for a microelectronic device and methods for forming the structure. A substrate is included having opposing surfaces and a plurality of holes extending through the surfaces. Also included is a plurality of electrically conductive posts. Each post extends from a base to a tip located within a corresponding hole of the substrate. An additional substrate may be provided such that the base of each post is located on a surface thereof. Additional electrically conductive posts may be provided having tips in corresponding holes of the additional substrate. Optionally, a dielectric material may be placed between the substrate and the posts.