Abstract:
A printed circuit board is provided which comprises a core layer of a conductive metal having a thickness between 30 micrometer and 120 micrometer, an upper dielectric layer and a lower dielectric layer sandwiching the core layer; an upper conductive layer arranged above the upper dielectric layer and a lower conductive layer arranged below the lower dielectric layer; at least one via passing from the upper conductive layer to the lower conductive layer and filled at least partially with the dielectric material of the upper and/or lower dielectric layer; and at least one and blind via, connecting the upper conductive layer with the core layer.
Abstract:
An electronic device comprises a flexible, printed circuit board having an electrically conductive layer (2) on one side of the flexible board, and a conductive metallic stiffener (8) which is attached to the flexible board. Said conductive layer (2) is conductively connected to the metallic stiffener (8) by means of solder. The flexible board is provided with a through-hole (10), the solder connecting the metallic stiffener (8) with the conductive layer (2) being present in said through-hole (10).
Abstract:
According to a process for producing a thermal layout, not only massive heat sinks are provided for absorbing heat, but also an optimized number of thermoconductive strips which distribute the heat over the printed circuit board. In the collecting zones are arranged higher capacity sinks into which the heat is transmitted. The thermoconductive strips may be thermoconductors (TL) provided for that purpose and more massive than the conductive strips for the electric connections, or conductive strips for electric connections, the electroconductors (EL), may also be used for heat transfer. An optimum design interconnects the TL'S and EL's into a functional whole, a thermal management network. With a certain technique, which could be called pocket groove technique, "cooling channels" of a type may be created. Such thermoconductors may be included in the electric layout, so that a thermal layout is superimposed on the connection layout (TL/EL network). Heat distribution and transfer may thus be calculated and optimized by a computer in the same way as the electric distribution by the conductive strips, i.e. the known electric layout, which is produced by a computer-assisted process.
Abstract:
Ein Verfahren zur Herstellung zumindest einer elektrisch leitenden Verbindung (6a, 6b, 6c) in einem Schaltungsträger (1), der eine Aluminiumbasisschicht (2), eine darüber angeordnete Isolierschicht (3) sowie eine auf der Isolierschicht angeordnete Leiterbahnstruktur (4) aufweist, wobei die elektrisch leitende Verbindung zwischen der Aluminiumbasisschicht und zumindest einer Leiterbahn (4a, 4b, 4c) der Leiterbahnstruktur (4) hergestellt wird, wobei zumindest eine Bohrung (5a, 5b, 5c) hergestellt wird, welche die Leiterbahn (4a, 4b, 4c) und die Isolierschicht (3) durchsetzt und zumindest bis zu der Aluminiumbasisschicht (2) reicht und zur Herstellung der zumindest einen elektrisch leitenden Verbindung (6a, 6b, 6c) diese Bohrung mit einem elektrisch leitfähigen Stoff gefüllt wird, welcher daraufhin einem Verfestigungsprozess unterworfen wird, sowie ein dementsprechend ausgebildeter Schaltungsträger.
Abstract:
A structure is disclosed for connecting an electrically-connectable metal stiffener (402) to a ground connection within a flexible substrate (102), the stiffener comprising nickel-gold plated stainless steel. In one embodiment the stiffener is secured to the flexible substrate by a non- conducting adhesive (110) which includes an opening over a ground connection, the adhesive opening being filled by a conductive epoxy (302). A sequence for applying the disclosed materials discloses a method for attaching the stiffening structure to the flexible substrate.
Abstract:
A structure is disclosed for connecting an electrically-connectable metal stiffener to a ground connection within a flexible substrate, the stiffener comprising nickel-gold plated stainless steel. In one embodiment the stiffener is secured to the flexible substrate by a non-conducting adhesive which includes an opening over a ground connection, the adhesive opening being filled by a conductive epoxy. A sequence for applying the disclosed materials discloses a method for attaching the stiffening structure to the flexible substrate.