Abstract:
PROBLEM TO BE SOLVED: To provide a device and a method for packing electronic components using injection moulding technology. SOLUTION: A plurality of components 1 are arranged in predetermined positions on a first side 2 of a subcarrier 3. The subcarrier 3 has printed conductors 5 with contact surfaces 6 for connecting to the contact surfaces 7 of the electronic components 1 and through contacts 8 to external contacts on a second side 10 of the subcarrier 3. The subcarrier 3 consists of a ceramic substrate 11 which in its edge areas 12 on the first side 2, has a ductile metal layer 13 arranged in a ring shape. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
The invention relates to a device and a method for packing electronic components (1) using injection moulding technology. A number of components (1) are arranged in predetermined positions on a first side (2) of a subcarrier (3), said subcarrier (3) having printed conductors with contact surfaces (6) for connecting to the contact surfaces (7) of the electronic components (1) and through contacts (8) to external contacts on a second side (10) of the subcarrier (3). The subcarrier (3) consists of a ceramic substrate (11) which in its edge areas (12) on the first side (2), has a ductile metal layer (13) arranged in a ring shape.
Abstract:
The invention relates to an electronic component (1) comprising a semiconductor chip (2) and a flat conductor frame (17) provided on the lower face thereof with a metal coating pattern (19) for soldering the electronic component (1). Said metal coating pattern (19) comprises wetting areas which are wettable with a soldering material and non-wetting areas (20) which are non-wettable by said soldering material. The inventive electronic component (1) is provided on the low face thereof with solder depositions (15) in the wetting areas thereof.
Abstract:
The invention relates to a plastic housing (14) comprising several semiconductor chips (3) and a wiring modification plate (11), on which the semiconductor chips (3) are arranged, and to an injection moulding-mould for producing said plastic housing (14), in addition to an electronic component, which can be produced by the combination of the injection-moulding mould, wiring modification plate (11) and plastic housing (14). The invention also relates to a method, which uses the inventive wiring modification plate (11) and the two-part injection-moulding mould, to produce a plastic housing of this type (14) comprising several semiconductor chips (3) for several electronic components.
Abstract:
The invention relates to a method for coating electronic components (1) that are mounted on a substrate (2) by means of a molding tool. Said molding tool comprises at least one cavity (5) that is defined by two molding elements (3, 4). For the inventive method, either flexible pressure elements (8, 9, 13, 14) or auxiliary substrates (19) are used to seal the cavity (5) and to compensate for work tolerances and differences in thickness of the substrate (2).
Abstract:
Process for encapsulating semiconductor chips (7) comprises applying an adhering film on the lower side of the system carrier before injecting a pressed composition so that the surfaces of the carrier covered with the film are kept free from the pressed composition. An Independent claim is also included for a device for encapsulating semiconductor chips comprising a conveyor (21) for moving a film (24) over the bearing surface (28) for the system carrier; and a heater (25) for heating the foil to make it easier to remove from the carrier. A film with an adhesive layer is used.
Abstract:
Process for packing electronic components comprises preparing a ceramic substrate (11) with conducting pathways (5), contact connection surfaces (6) and pressure contacts (8); preparing an injection molding tool (20) forming the housing mold; pressing the tool onto a ductile annular metal layer (13) in the edge region of the substrate; injecting a plastic composition in the hollow chamber (25) between the molding tool and the components on the first side of the substrate; applying contact outer connection surfaces in predetermined positions of a second side of the substrate; and separating the components. An Independent claim is also included for a device for packing electronic components. Preferred Features: The ceramic substrate is made from finely ground Al2O3 having a purity of at least 96% and containing small amounts of MgO.
Abstract:
An electronic component includes a semiconductor chip and a leadframe. The leadframe includes a metal coating pattern on its underside to facilitate the application of solder to the electronic component. The metal coating pattern includes wetting regions that are wettable with solder material and anti-wetting regions that are unwettable with solder material, and the electronic component includes solder deposits formed on the wetting regions on the underside of the component.
Abstract:
Verfahren zum Herstellen einer integrierten Leadless-Gehäuse-Schaltung, das folgende Schritte aufweist: – Bereitstellen eines Leadframe-Rahmens (1) mit einer Oberseite und einer Unterseite und wenigstens einem Leadframe-Abschnitt (2, 3, 4, 5), der mit einem von einem Kunststoffgehäuse (6) umgebenen Halbleiterbauteil versehen ist, wobei als Leiterbahnen (7) ausgebildete Bereiche des Leadframe-Abschnitts (2, 3, 4, 5) eine äußere Oberfläche des Kunststoffgehäuses (6) durchdringen, wobei vor einem Schritt eines Durchtrennens der Leiterbahnen (7) zum Singulieren einer integrierten Schaltung der folgende Schritt vorgesehen ist: – Beaufschlagen wenigstens eines Übergangsbereichs zwischen Kunststoffgehäuse (6) und Leiterbahnen (7) mit energiereicher Strahlung von der Ober- und Unterseite des Leadframe-Rahmens, und zwar derart, dass im Übergangsbereich Teile des Kunststoffgehäuses (6) entfernt werden, – Durchtrennen der Leiterbahnen (7) zum Singulieren der integrierten Leadless-Gehäuse-Schaltung unter Erzeugen von Trennflächen (10), so dass zwischen jeder Trennfläche (10) und einem Bereich des die betreffende Trennfläche (10) umgebenden Kunststoffgehäuses (6) in Draufsicht auf...