Abstract:
Die Erfindung betrifft ein Verfahren zum Herstellen einer mit Elektronikbauelementen bestückbaren Multilayer-Leiterplatte, mit den Schritten: Auftragen einer einem Leiterbahnverlauf (12, 16, 20) entsprechenden, elektrisch leitenden Bemusterung einer Schichtdicke
Abstract:
A power transfer pad, having: a non-conductive board having a top and a bottom; a plurality of conductive substrate sections disposed across the top of the non-conductive board; at least one conducting element disposed on each of the conductive substrate sections; a plurality of electrical contacts on the bottom of the non-conductive board, wherein each of the electrical contacts on the bottom of the non-conductive board are in electrical communication with one of the conductive substrate sections on the top of the non-conductive board.
Abstract:
Die Erfindung betrifft eine Leiterplatte mit zumindest einer nicht leitenden Trägerplatte (1) mit Bauelementen und Leiterbahnen zur elektrischen Kontaktierung der Bauelemente, zumindest einer Niederstromschaltungsanordnung (2) zur Einkopplung oder Übertragung niedriger Stromleistungen und zumindest einer Hochstromschaltungsanordnung (3) zur Einkopplung und/oder Übertragung hoher Stromleistungen. Solche Leiterplatten sind bekannt, weisen jedoch entweder den Nachteil mangeln der Flexibilität oder hoher Herstellungskosten auf. Dies ändert die Erfindung dadurch, dass die Hochstromschaltungsanordnung nur in einem Teil der Leiterplatte angeordnet ist und zur Aufnahme der Leiterbahnen (4) und/oder des Kontaktblocks (5) der Hochstromschaltungsanordnung (3) die Trägerplatte (1) wenigstens eine Bauelementaufnahme (6) in Form einer taschenartigen oder durchgängigen Ausnehmung aufweist, in die die Leiterbahnen (4) und/oder der Kontaktblock (5) der Hochstromschaltungsanordnung (3) eingesetzt ist.
Abstract:
A laminate (30) is composed of a printed circuit board having circuit patterns thereon and a semicured resin sheet placed on the printed circuit board. Such laminates (30) and separation films (31) are alternated to form a stack. The stack of the laminates is sandwiched between a pair of flat plates (32) and pressed all at a time in a reduced-pressure atmosphere, and the resin is cured. The cured resin covering the circuit patterns of each laminate is removed by grounding to expose the circuit patterns. Thus a flat printed wiring board with the spaces between the circuit patterns filled with resin is manufactured.
Abstract:
A method for forming low-impedance high density deposited-on-laminate (D/L) structures (10) having reduced stress features reducing metallization present on the laminate printed circuit board (12). In this manner, reduced is the force per unit area exerted on the dielectric material (30) disposed adjacent to the laminate material (16) which is typically present during thermal cycling of the structure.
Abstract:
A structure (201) includes a support layer (210) formed of a conductive material, such as a sheet of copper. The support layer has a number of conductive islands (212A...) isolated from other portions of the support layer by isolation gaps (211a...). The support layer (210) is sandwiched between two compound layers (220, 230) each of which is formed of a dielectric layer having a number of via holes (221A..., 231A...) and conductive elements (222A..., 232...A) located in the via holes (221A..., 231A...). The conductive elements (222A..., 232A...) contact the conductive islands (212A...). The structure also includes two conductive layers, (240, 250) formed on the two compound layers (220, 230) such that a trace (241A...) in one of the conductive layers (240, 250) is coupled to a trace (241A) in the other conductive layer (240, 250) through two conductive elements and a conductive island. The support layer can be formed by etching a sheet of conductive materials. The compound layers can be formed by placing a conductive paste in via holes in a dielectric layer. The conductive layers can be formed by lamination followed by etching to form the traces.
Abstract:
The invention relates to a method of manufacturing a pattern of conductors (10) on a polyimide base (1). After the conductors (11) have been formed in known manner ridges (21) of an insulating material are formed in the metal-free zones by applying, exposing and developing a UV-sensitive resist. Subsequently, metal is deposited on the conductors (11), the ridges (21) preventing short-circuits.
Abstract:
The invention relates to a process for producing an electrically conductive connection between opposite contact regions of two components to be joined by means of a hot-melt adhesive with electrically conductive particles dispersed in a thermoplastic base material. The hot-melt adhesive (22) is deliberately applied only to the contact regions (16) of at least one of the components (10, 28, 42, 50), which are put together under the effect of heat.
Abstract:
A method of making an insulated patterned layer of an electrically conductive metal includes the steps of: (i) applying a layer of a radiation-curable material (2) to a substrate (1); (ii) imagewise exposing the layer of radiation-curable material to radiation to thereby cure portions (2a) of the layer exposed to such radiation; and (iii) removing the portions (2b) of the layer not exposed to radiation by means of a suitable solvent to thereby produce upon the substrate a patterned layer of cured radiation-curable material; and subsequently introducing electrically conductive metal (4) into the depressions (tracks) in the patterned relief layer.