Abstract:
A semiconductor die package is disclosed. It may include a semiconductor die having a first surface and a second surface, and a leadframe structure. A molding material may be formed around at least a portion of the die and at least a portion of the leadframe structure. A solderable layer may be on the exterior surface of the molding material and the first surface of the semiconductor die.
Abstract:
A contact of a component is electrically connected to an associated contact of an electrical circuit, typically formed on a substrate, by depositing material between the contacts, the material forming or being processed to form an electrical connection between the contacts. The invention also provides apparatus for this purpose and a resulting circuit.
Abstract:
Bei einem Multichip-Schaltungsmodul mit einer Hauptplatine (9) mindestens einem auf der Hauptplatine (9) montieren und mit der Hauptplatine (9) elektrisch kontaktierten Trägersubstrat (1) und mindestens einem Halberleiterchip (5) auf dem Trägersubstrat (1), der mit dem Trägersubstrat (1) elektrisch kontaktiert ist, hat das Trägersubstrat (1) mindestens eine Kavität (4) an einer Montageoberfläche (3) zur Aufnahme mindestens eines Halbleiterchips (5), wobei in der Kavität (4) Anschlusskontakte (6) für zugeordnete Bumps (7) des Halbleiterchips (5) vorgesehen sind, der mindestens eine Halbleiterchip (5) in Flip-Chip-Technik mit den Bumps (7) an den Anschlusskontakten (6) montiert ist, und die Montageoberfläche (3) des Trägersubstrates (1) auf eine Kontaktoberfläche (10) der Hauptplatine (9) aufgebracht ist, und ein Füllmaterial (11) zwischen der Kontaktoberfläche (10) der Hauptplatine (9) und der Montageoberfläche (3) des Trägersubstrates (1) vorgesehen ist.
Abstract:
There is disclosed a method of forming a conductive metal region on a substrate, comprising depositing on the substrate a solution of a metal ion, and depositing on the substrate a solution of a reducing agent, such that the metal ion and the reducing agent react together in a reaction solution to form a conductive metal region on the substrate.
Abstract:
Um eine Abschirmung für EMI-gefährdete elektronische Bauelemente und/oder Schaltungen (20) von elektronischen Geräten, insbesondere für Funksende- und/oder Funkempfangseinrichtungen von Telekommunikationsendgeräten zur drahtlosen Telekommunikation, wie Schnurlos- und Mobilfunktelefone und dergleichen, bereitzustellen, welche ohne aufwendige Fertigungs- und Montagearbeiten ohne zusätzlichen Raumbedarf herstellbar ist, sind die EMI-gefährdete elektronische Bauelemente und/oder Schaltungen (20) auf einer separaten, als Leiterplattenmodul ausgebildeten, mindestens zweilagigen Leiterplatte (2) angeordnet. Diese Leiterplatte und eine weitere separate, mindestens zweilagige, Nicht-EMI-gefährdete elektronische Bauelemente und/oder Schaltungen (10) und eine Ausnehmung (11) für die EMI-gefährdeten elektronischen Bauelemente und/oder Schaltungen (10) aufweisende, als Grundleiterplatte ausgebildete Leiterplatte (1) sind vorzugsweise im Bereich von Kontaktbereichen (12, 14, 22, 23) derart zu einer Einheit verbindungstechnisch, vorzugsweise durch Löten, zusammengefügt, dass durch die zwischen zwei metallischen als Masseflächen ausgebildeten Schichten (13, 21) angeordnete Ausnehmung (11), wobei die Masseflächen (13, 21) über sehr eng aneinander an geordnete Durchkontaktierungen (14, 23) jeweils mit den Abschirmflächen (12, 22) verbunden sind, ein Käfig (3) gebildet wird, der die EMI-gefährdeten elektronischen Bauelemente und/oder Schaltungen (20) nach allen Seiten hin abschirmt.
Abstract:
Methods and apparatuses for an elecronic assembly. The electronic assembly has a first object created and separated from a host substrate. The first object has a first electrical circuitry therein. A carrier substrate is coupled to the first object wherein the first object is being recessed below a surface of the carrier substrate. The carrier substrate further includes a first carrier connection pad and a second carrier connection pad that interconnect with the first object using metal connectors. A receiving substrate, which is substantially planar, including a second electrical circuitry, a first receiving connection pad, and a second receiving connection pad that interconnect with the second electrical circuity using the metal connectors. The carrier substrate is coupled to the receiving substrate using the connection pads mentioned.
Abstract:
A method of forming circuit lines on a substrate by applying a roughened conductive metal layer using a copper foil carrier. The copper foil is etched away, leaving the roughened conductive metal embedded in the surface of the substrate. The conductive metal may be treated to remove an oxide layer. A photoresist may also be applied over the treated conductive metal layer to define a fine line circuit pattern. The photoresist defining the fine line circuit pattern is then removed to expose trenches in accordance with the desired circuit pattern. Copper is applied into the trenches over the exposed conductive metal, and the remaining photoresist, and conductive metal underlying the remaining photoresist, is removed to finish the fine line circuit pattern.
Abstract:
A mask (110; see also 160, 210, 260, 310, 408, 500, 702, 802, 904) having a plurality of openings (cells) is disposed on, or nearly on, the surface of a substrate (102), the openings (112) of the mask being aligned over a corresponding plurality of pads (104) on the substrate. The openings in the mask are filled with solder material (114). A pressure plate (120) is disposed over the mask to capture the solder material in the cells. Heat is directed at the mask (through the pressure plate) to reflow the solder. This is done in an inverted or partially inverted orientation. The stackup (assembly) of substrate/mask/pressure plate may be un-inverted prior to cooling. Mask configurations, methods of mounting the masks, and solder material compositions are described. The methods are robust, and are well suited to fine pitch as well as coarse pitch ball bumping of substrates.
Abstract:
Leadless chip package (10) is adhesively secured to printed wiring board (14) and is electrically connected by metallic conductor ribbon or wire (40, 42, 44...) to pads (30, 32, 34, 36) on the package (10) and pads (16, 18, 20, 22...) on the printed wiring board (14) to provide secure connection.
Abstract:
An example device includes a lithium-based battery having conductive battery contacts protruding from a surface of the battery, where a non-conductive potion of the surface of the battery separates the conductive battery contacts. The battery is a type that undergoes an expansion during charging in which the expansion of the lithium-based battery includes an outward bulging of the non-conductive portion of the battery surface. The device includes a substrate having conductive substrate contacts. The conductive battery contacts are electrically connected to the respective conductive substrate contact via a flexible electrically-conductive adhesive that physically separates the conductive battery contacts from the respective conductive substrate contacts and allows for relative movement therebetween caused by the expansion of the lithium-based battery.