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 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 has a top surface and a bottom surface remote from the top surface and a plurality of vertically stacked microelectronic elements therein, including at least one microelectronic element having a front face adjacent to the top surface and a rear face oriented towards the bottom surface. Each of the microelectronic elements has traces extending from contacts at the front face beyond edges of the microelectronic element. A dielectric layer contacts edges of the microelectronic elements and underlies the rear face of the at least one microelectronic element. Leads are connected to the traces extending along the dielectric layer. Unit contacts, exposed at the top surface, are connected to the leads.
摘要:
A method is provided for fabricating a unit including a semiconductor element such as a sensor unit, e.g., for optical imaging. A semiconductor element has plurality of conductive features exposed at the front surface and semiconductive or conductive material exposed at least one of the front and rear surfaces. At least some of the conductive features are insulated from the exposed semiconductive or conductive material. By electrodeposition, an insulative layer is formed to overlie the at least one of exposed semiconductive material or conductive material. Subsequently, a plurality of conductive contacts and a plurality of conductive traces are formed overlying the electrodeposited insulative layer, the conductive traces connecting the conductive features to the conductive contacts. The unit can be incorporated in a camera module having an optical element in registration with an imaging area of the semiconductor element.
摘要:
A method of making microelectronic packages includes making a subassembly by providing a plate having a top surface, a bottom surface and openings extending between the top and bottom surfaces, attaching a compliant layer to the top surface of the plate, the compliant layer having openings that are aligned with the openings extending through the plate, and providing electrically conductive features on the compliant layer. After making the subassembly, the bottom surface of the plate is attached with the top surface of a semiconductor wafer so that the openings extending through the plate are aligned with contacts on the wafer. At least some of the electrically conductive features on the compliant layer are electrically interconnected with the contacts on the semiconductor wafer.
摘要:
A microelectronic unit 400 can include a semiconductor element 401 having a front surface, a microelectronic semiconductor device adjacent to the front surface, contacts 403 at the front surface and a rear surface remote from the front surface. The semiconductor element 401 can have through holes 410 extending from the rear surface through the semiconductor element 401 and through the contacts 403. A dielectric layer 411 can line the through holes 410. A conductive layer 412 may overlie the dielectric layer 411 within the through holes 410. The conductive layer 412 can conductively interconnect the contacts 403 with unit contacts.
摘要:
A microelectronic package includes a microelectronic element having contacts, a flexible substrate spaced from and overlying the microelectronic element and a plurality of conductive posts extending from the flexible substrate and projecting away from the microelectronic element. The conductive posts are electrically interconnected with the microelectronic element. Each conductive post has a conductive base that is in contact with the flexible substrate and a conductive tip that extends from the base, with the base of the conductive post having a larger diameter than the tip of the conductive post. In certain embodiments, the conductive base and the conductive tip have a cylindrical shape.
摘要:
Elongated solder masses are formed by contacting the molten solder with the walls of holes in a dielectric layer overlying the front face of a chip element such as a wafer. The elongated solder masses have a relatively large aspect ratio, or ratio of height to maximum diameter, and thus provide a high reliability connection with a relatively small diameter compatible with closely spaced contacts on the chip.
摘要:
A capped chip is provided which includes a chip having a front surface, a plurality of conductive features exposed at the front surface and a cap. The cap has an inner surface facing the front surface of the chip, an outer surface opposite the inner surface, and a through hole extending from the outer surface to the inner surface. A conductive interconnect extends at least partially through the through hole. The interconnect includes a conductive article which occupies a substantial portion of a volume of the interconnect and the interconnect further includes a flowable conductive medium which joins the conductive article to at least one of the plurality of conductive features of the chip or to the cap.
摘要:
A packaged microelectronic device is provided which includes: (a) a unit having a chip with an upwardly-facing front surface and a downwardly-facing rear surface, a lid overlying at least a portion of the front surface of the chip, the lid having a top surface facing upwardly away from the chip and unit connections exposed at the top surface of the lid. At least some of the unit connections are electrically connected to the chip. The packaged microelectronic device also includes a package structure including structure defining package terminals, at least some of the package terminals being electrically connected to the chip. The package structure, the unit or both define a downwardly-facing bottom surface of the package, the terminals being exposed at the bottom surface.