Abstract:
A method for forming an electrically isolated via in a multilayer ceramic package and an electrical connection formed within the via are disclosed. The method includes punching a first via (30) in a first layer (10), filling the first via with a cross-linkable paste (40), curing the paste to form an electrical insulator precursor and forming the via in the insulator precursor. The electrical connection formed includes an insulator made from a cross-linked paste supported by a substrate of a multilayer ceramic package and a conductive connection supported by the insulator.
Abstract:
Interferometric apparatus and methods by which aspheric surfaces and wavefronts may be precisely measured. The apparatus is provided with two modes of operation. In one mode, the apparatus is configured generally as Fizeau interferometer in which an aspheric reference surface (34) is used to permit the rapid, robust measurement of the difference between the aspheric reference surface and an aspheric test optic or wavefront (42). In another mode of operation, the aspheric test surface is completely characterized through in-situ use of an interferometric scanning technique using a spherical reference surface.
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 ein Sensorelement, insbesondere zum Nachweis einer physikalischen Eigenschaft eines Gases, insbesondere zum Nachweis der Konzentration einer Gaskomponente oder der Temperatur eines Abgases eines Verbrennungsmotors, wobei das Sensorelement (20) eine erste Festelektrolytschicht (21) aufweist, wobei die erste Festelektrolytschicht (21) ein Durchkontaktierloch (25) aufweist, wobei das Sensorelement (20) ferner ein Leitelement (41) aufweist, dass eine elektrisch leitende Verbindung von der Oberseite (211) der ersten Festelektrolytschicht (21) zur Unterseite (212) der ersten Festelektrolytschicht (21) durch das Durchkontaktierloch (25) herstellt, und wobei die erste Festelektrolytschicht (21) in dem Durchkontaktierloch (25) von dem Leitelement (41) durch ein Isolationselement (42) elektrisch isoliert ist, dadurch gekennzeichnet, dass die Wand (251) des Durchkontaktierlochs (25) eine Fase (51) aufweist und ein Verfahren zur Herstellung eines Sensorelements.
Abstract:
A through hole is formed in a circuit board (300) that has fibers (312) dispersed in a polymer matrix. Copper is sputtered within the through hole to form a sufficiently conductive layer for electrolytic plating (308) over the sputtered copper layer (306).
Abstract:
The invention relates to a green ceramic insert (20) comprising a green ceramic body (14) provided with a recess (15). Said recess (15) crosses the ceramic body (14) and is filled with a paste (15') which can be converted into an electrical feedthrough. The invention also relates to a ceramic insert consisting of a sintered insert (20) of the same green ceramic type. The invention further relates to a ceramic green body (5) or a green body composite (5') which comprises at least one recess (11), in areas, in which one of the above-mentioned green ceramic inserts (20) is placed. Disclosed is also a ceramic laminated composite consisting of a sintered green body (5) or green body composite (5')of the same green ceramic type. According to the invention, the ceramic insert (20) is especially connected to the laminated composite in a material fit. A conductive paste (16) which is converted into a strip conductor by means of sintering is guided on the laminated composite in such a way that it is electrically insulated from the same. Said ceramic insert connects the upper side of the laminated composite to the lower side thereof in an electroconductive manner by means of the electrical feedthrough.
Abstract:
A method for forming an electrically isolated via in a multilayer ceramic package and an electrical connection formed within the via are disclosed. The method includes punching a first via (30) in a first layer (10), filling the first via with a cross-linkable paste (40), curing the paste to form an electrical insulator precursor and forming the via in the insulator precursor. The electrical connection formed includes an insulator made from a cross-linked paste supported by a substrate of a multilayer ceramic package and a conductive connection supported by the insulator.