Abstract:
Un composant de connexion électro-mécanique (10) est muni d'inserts conducteurs (16) destinés à être insérés dans des plots conducteurs respectifs d'un autre composant de connexion pour une hybridation du type face contre face. Chaque insert (16) comporte: une âme métallique (24), non oxydée sur au moins une portion de sa surface, et de dureté supérieure à celle des plots; une première couche métallique non oxydée (26)sur au moins une portion de sa surface, recouvrant au moins ladite portion non oxydée de l'âme (24), la première couche ayant une plasticité supérieure à celle de l'âme; et une seconde couche (28) recouvrant au moins la première couche(26) sur sa portion non oxydée et ayant une plasticité inférieure à celle de la première couche.
Abstract:
Standardized photon building blocks are used to make both discrete light emitters as well as array products. Each photon building block has one or more LED chips mounted on a substrate. No electrical conductors pass between the top and bottom surfaces of the substrate. The photon building blocks are supported by an interconnect structure that is attached to a heat sink. Landing pads on the top surface of the substrate of each photon building block are attached to contact pads disposed on the underside of a lip of the interconnect structure. In a solder reflow process, the photon building blocks self- align within the interconnect structure. Conductors on the interconnect structure are electrically coupled to the LED dice in the photon building blocks through the contact pads and landing pads. The bottom surface of the interconnect structure is coplanar with the bottom surfaces of the substrates of the photon building blocks.
Abstract:
A microelectronic assembly 700 includes a dielectric element 730 having at least one aperture 733 and electrically conductive elements thereon including terminals 740 exposed at the second surface of the dielectric element 730; a first microelectronic element 712 having a rear surface and a front surface facing the dielectric element 730, the first microelectronic element 712 having a plurality of contacts exposed at the front surface thereof; a second microelectronic element 714 having a rear surface and a front surface facing the rear surface of the first microelectronic element 712, the second microelectronic element 714 having a plurality of contacts exposed at the front surface and projecting beyond an edge of the first microelectronic element 712; and an electrically conductive plane 790 attached to the dielectric element 730 and at least partially positioned between the first and second apertures 733,739, the electrically conductive plane 790 being electrically connected with one or more of the contacts of at least one of the first or second microelectronic elements 712,714.
Abstract:
A microelectronic assembly 10 includes a dielectric element 30 having first and second surfaces 32, 34, first and second apertures 33, 39 extending between the first and second surfaces 32, 34 and defining a central region of the first surface 32 between the first and second apertures 33, 39, first and second microelectronic elements 12, 14, and leads 50, 70 extending from contacts 20, 26 exposed at respective front surfaces 16, 22 of the first and second microelectronic elements 12, 14 to central terminals 36 exposed at the central region. The front surface 16 of the first microelectronic element 12 can face the second surface 34 of the dielectric element 30. The front surface 22 of the second microelectronic element 14 can face a rear surface 18 of the first microelectronic element 12. The contacts 26 of the second microelectronic element 14 can project beyond an edge of the first microelectronic element 29. At least first and second ones of the leads 518, 519 can electrically interconnect a first central terminal 553 of the central terminals 558 with each of the first and second microelectronic elements 501, 502.
Abstract:
A microelectronic assembly includes a dielectric element 930B having oppositely-facing first and second surfaces and one or more apertures 972 extending between the surfaces, the dielectric element further having conductive elements thereon; a first microelectronic element 900A having a rear surface and a front surface facing the first surface of the dielectric element 930B, the first microelectronic element 900A having a first edge and a plurality of contacts exposed at the front surface thereof; a second microelectronic element 900B including having a rear surface and a front surface facing the rear surface of the first microelectronic element 900A, a projecting portion of the front surface of the second microelectronic element 900B extending beyond the first edge of the first microelectronic element 900A, the projecting portion being spaced from the first surface of the dielectric element 930B, the second microelectronic element 900B having a plurality of contacts exposed at the projecting portion of the front surface; leads extending from contacts of the microelectronic elements through the at least one aperture to at least some of the conductive elements; and a heat spreader 970 thermally coupled to at least one of the first microelectronic element 900A or the second microelectronic element 900B.
Abstract:
An assembly is obtained; it includes a substrate; a plurality of wet-able pads formed on a surface of the substrate; and a solder resist layer deposited on the surface of the substrate and having an outer surface. At least the solder resist layer is formed with recessed regions defining volumes adjacent the wet-able pads. Molten solder is directly injected into the volumes adjacent the wet-able pads, such that the volumes adjacent the wet-able pads are filled with solder. The solder is allowed to solidify. It forms a plurality of solder structures adhered to the wet-able pads. The substrate and the solder are re-heated after the solidification, to re-flow the solder into generally spherical balls extending above the outer surface of the solder resist layer. The volumes adjacent the wet-able pads are configured and dimensioned to receive sufficient solder in the injecting step such that the generally spherical balls extend above the outer surface of the solder resist layer as a result of the re-heating step. In an alternative approach, solder injection and solidification are earned out in a nitrogen environment or a forming gas environment, and the reflow step may be omitted.
Abstract:
A package for at least one semiconductor device and a method for making the package. At least one dielectric layer is selectively printed on at least a portion of the semiconductor device creating first recesses aligned with a plurality of the electrical terminals. A conductive material is printed in the first recesses forming contact members on the semiconductor device. At least one dielectric layer is selectively printed on at least a portion of the package to create a plurality of second recesses corresponding to a target circuit geometry. A conductive material is printed in at least a portion of the second recesses to create a circuit geometry. The circuit geometry includes a plurality of exposed terminals electrically coupled to the electric terminals on the semiconductor device.
Abstract:
A portion of compliant material includes four walls defining a slot. The slot has a relatively large cross-section end in fluid communication with a solder reservoir, and also has a relatively small cross-section end opposed to the relatively large cross-section end. The slot has a generally elongate rectangular shape when viewed in plan, with a length perpendicular to a scan direction, a width, parallel to the scan direction, associated with the relatively large cross section end, and a width, parallel to the scan direction, associated with the relatively small cross section end. The slot is configured in the portion of compliant material such that the relatively small cross-section end of the slot normally remains substantially closed, but locally opens sufficiently to dispense solder from the reservoir when under fluid pressure and locally unsupported by a workpiece. Methods of operation and fabrication are also disclosed.
Abstract:
A micro-electromechanical component (70) produced from a semiconductor substrate, comprising an internal moving portion (41) which includes conductive elements (44) and contacts (60) on its outer surface, said contacts (60) being electrically connected to said conductive elements (44), said electrical contacts (60) being capable of accommodating soldered interconnect wires (84) which are themselves designed to be connected to electrical contacts (81) provided on device (80) which accommodates said component (70), characterized in that electrical contacts (60) are arranged in an area which extends between upper face (12) of the component and lateral face(13), said contacts (60) having a concave shape and having two regions capable of accommodating soldered interconnect wires, said regions(61, 62) being substantially perpendicular to each other and parallel to said upper face (12) and said lateral face (13) respectively.