Abstract:
The invention aims to raise the packing density of electronic circuits and printed conductor structures on circuit boards intended for electrical apparatus having HF components, notably mobile radiocommunications equipment. To this end, a "micro via" layer (M2) is first applied to one or both sides of a circuit board substrate (LPT4). Thereafter, especially HF circuits and HF printed conductor structures (LBS3HF) are placed onto at least part of the "micro via" layer (M2). The HF circuits and HF printed conductor structures (LBS3HF) are protected in relation to an HF mass layer of the circuit board substrate by blocking zones arranged in a substrate layer (LPL2) of the circuit board layer situated directly below the "micro via" layer (M2) against interfering influences which affect the HF parameters to be adjusted of the HF circuits or HF printed conductor structures LBS3HF).
Abstract:
Fuse assemblies are disclosed. In one implementation, a fuse assembly may be disposed that includes a first portion of the second portion. The first portion may be formed of a first metal. The second portion may be formed of a second metal different from the first metal. The second metal may be copper, and the copper may be tin plated or silver plated.
Abstract:
Electrical feedthroughs in printed circuit board support substrates (24) for use in making double sided ceramic multilayer printed circuit boards are made by insulating the feedthrough openings with a first layer of nickel oxide (22) and one or more layers of glass (26, 28), and then filling the remainder of the feedthroughs with a conductive metal via fill ink (30). After firing, the resultant structure provides insulated electrical feedthroughs through the support substrate (24).
Abstract:
Die Erfindung betrifft eine Leiterplatte, vorzugsweise zur Verwendung in einem Kraftstofffüllstandssensor und einem Kraftstofffüllstandsmesssystem, mit auf zwei Seiten eines Keramiksubstrates (2) ausgebildeten Leiterbahnen (4, 5), wobei das Keramiksubstrat (2) mindestens ein metallisiertes Loch (3) zur Durchkontaktierung aufweist, welches die Leiterbahnen (4, 5) miteinander verbindet. Das Loch 3 des gesinterten Keramiksubstrates (2) ist dabei mit einer unter Pressdruck eingefüllten metallhaltigen Sinterpaste befüllt, die im ausgesinterten Zustand zumindest eine Stoffschlüssige Verbindung mit dem Keramiksubstrat (2) eingeht und dabei das Loch vollständig ausfüllt. Die Erfindung betrifft auch ein Verfahren zur Herstellung einer solchen Leiterplatte.
Abstract:
This publication discloses a method for manufacturing a circuit-board structure. According to the method, a conductor pattern (13) is made, and contact openings are made in it for a component's (16) electrical contacts. After this, the component (16) is attached relative to the conductor pattern (13), in such a way that the contact areas or contact bumps of the component lie next to the contact openings. After this, an electrically conductive material is introduced to the contact openings, in order to form electrical contacts between the conductor pattern (13) and the component (16).
Abstract:
An integrated double sided metal supported display device has a green tape stack on both sides of the metal support. The green tape stacks incorporate circuitry and conductor filled vias to access the circuitry electrically on each green tape layer. The metal support has a plurality of openings to access both of the green tape stacks. These openings are made by forming the openings in the metal support, filling them with a dielectric that has a thermal coefficient of expansion close to that of the metal support, forming an opening in the dielectric and filling the opening with a conductive ink.