Abstract:
Es wird ein lötfähiger Kontakt für ein elektrisches Bauelement vorgeschlagen, der eine Pad-Metallisierung und eine darüber aufgebrachte UBM-Metallisierung umfasst, und bei dem die Stabilität der Metallisierung durch eine Strukturierung der Pad-Metallisierung im Bereich der UBM-Metallisierung verbessert ist. Die Strukturierung kann ein Streifenmuster umfassen, zwischen denen die UBM-Metallisierung in Kontakt mit der Substratoberfläche treten kann.
Abstract:
Provided are connection structures for a microelectronic device and methods for forming the structure. A substrate (10) is included having opposing surfaces and a plurality of holes (12A-D) extending through the surfaces. Also included is a plurality of electrically conductive posts (18A-D). Each post extends from a base to a tip located within a corresponding hole of the substrate. An additional substrate (20) may be provided such that the base of each post is located on a surface thereof. Additional electrically conductive posts (28A-D) may be provided having tips in corresponding holes (22A-D) of the additional substrate. Optionally, a dielectric material may be placed between the substrate and the posts.
Abstract:
The invention relates to an electric multi-layered component comprising ceramic dielectric layers which are stacked on top of each other between which component structures are arranged. The aim of the invention is to increase the mechanical stability, in particular soldering contact, on the component. As a result, an improved transversal form for transversal contacts is provided. Said transversal contacts have a transversal cross section which expands towards the top, at least partially, from the soldering contact to the lower side of the component.
Abstract:
Methods and apparatus are provided for removing plating from a device. The method and apparatus may be used for preparing an electrical connector (100) for connecting at least one wire or other terminus thereto where the electrical connector (100) has at least one electrical contact (104) with a metal coating thereon. The method includes the steps of applying molten solder to the electrical contact (104) whereby the coating dissolves into the molten solder to thereby create a molten coating -solder mixture and rotating the electrical connector (100) whereby the molten coating-solder mixture is removed from the electrical contact (104).
Abstract:
The present invention comprises methods for making three-dimensional (3-D) liquid crystalline polymer (LCP) interconnect structures using a high temperature singe sided liquid crystalline polymer, and low temperature single sided liquid crystalline polymer, whereas both the high temperature LCP and the low temperature LCP are drilled using a laser or mechanical drill or mechanically punch to form a z-axis connection. The single sided Conductive layer is used as a bus layer to form z axis conductive stud within the high temperature and low temperature LCP, followed by deposition of a metallic capping layer of the stud that serves as the bonding metal between the conductive interconnects to form the z-axis electrical connection. High temperature and low temperature LCP circuit layers are etched or built up to form circuit patterns and subsequently bonded together to form final 3-D multilayer circuit pattern whereas the low temperature LCP melts to form both dielectric to dielectric bond to high temperature LCP circuit layer, and dielectric to conductive bond, whereas, metal to metal bonding occurs with high temperature metal capping layer bonding to conductive metal layer. The resultant structure is then packaged using two metallized organic cores that are laminated onto either side of the device using a low temperature adhesive with similar electrical properties and subsequently metallized to form the input output terminals and EM shielding.
Abstract:
The present invention provides a number of techniques for laminating and interconnecting multiple high-layer-count (HLC) substrates to form a multilayer package or other circuit component. A solder bump may be formed on the conductive pad of at least one of two HLC substrates. The solder bump preferably is formed from an application of solder paste to the conductive pad(s). An adhesive film may be positioned between the surfaces of the HLC substrates having the conductive pads, where the adhesive film includes an aperture located substantially over the conductive pads such that the conductive pads and/or solder bumps confront each other through the aperture. The HLC substrates then may be pressed together to mechanically bond the two substrates via the adhesive. The solder bump(s) may be reflowed during or after the lamination to create a solder segment that provides an electrical connection between the two conductive pads through the aperture in the adhesive film.
Abstract:
A method (100) for providing an electrical ground connection between a printed circuit board (700) and a metallic substrate (200) comprises steps of: (i) providing an aperture (204) in the substrate (200); (ii) forming a ground plug (302) out of metallic blank (300); (iii) inserting the ground plug (300) into the aperture in the substrate (200); (iv) compressing the ground plug (302) into the aperture (204) in the substrate (200); (v) placing the printed circuit board (700) onto the substrate (200); and (vi) applying solder into the aperture in the printed circuit board (700) and onto the ground plug (302). The steps of forming (104), inserting (106), and compressing (108) are carried out in a single punching operation (120). The method (100) efficiently provides a high quality electrical ground connection and avoids any need for sophisticated machinery.