US Patent 7490402 Technique for laminating multiple substrates
Patent 7490402 was granted and assigned to General Dynamics Advanced Information Systems on February, 2009 by the United States Patent and Trademark Office.
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The present invention provides a number of techniques for laminating and interconnecting multiple 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 or more substrates. The solder bump preferably is formed from an application of solder paste to the conductive pad(s). Adhesive films may be positioned between the surfaces of the substrates having the conductive pads, where the adhesive films include apertures located substantially over the conductive pads such that the conductive pads and/or solder bumps confront each other through the aperture. The two or more substrates then may be pressed together to mechanically bond the two or more substrates via the adhesive films. The solder bump(s) may be reflowed during or after the lamination to create a solder segment that provides an electrical connection between the conductive pads through the aperture in the adhesive films.
US Patent 07490402 Technique for laminating multiple substrates US Patent 7490402 Technique for laminating multiple substrates
US Patent 07490402 Technique for laminating multiple substrates
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