Multi-layer printed circuit board and method of making same

Method of manufacturing a multi-layer printed circuit board adapted for reduce interfacial sheer stresses includes a laminate substrate having a top layer forming a first major surface, a middle layer having a predetermined thickness and a bottom layer forming a second major surface opposed to the f...

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Bibliographische Detailangaben
Hauptverfasser: ACHARI ACHYUTA, LEMECHA MYRON, BELKE, JR. ROBERT EDWARD, DAILEY DANIEL PHILLIP, TODD MICHAEL GEORGE, BAKER JAY DEAVIS
Format: Patent
Sprache:eng
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Zusammenfassung:Method of manufacturing a multi-layer printed circuit board adapted for reduce interfacial sheer stresses includes a laminate substrate having a top layer forming a first major surface, a middle layer having a predetermined thickness and a bottom layer forming a second major surface opposed to the first major surface. Etch resists are disposed on the first and second surfaces corresponding to reverse images of desired conductor patterns. The first and second surfaces are thereafter etched and the photoresist removed. The laminate substrate is secured via a low modules adhesive layer to a major surface of a base. The middle layer of the laminate substrate is thereafter selectively etched so as to isolate selected portions of the first and second surfaces and to define inner connect regions therebetween having a height equal to the predetermined thickness.