Patent ID: 6252176
Filing Date: 2001-06-26
Classification: H05K

Abstract:
A printed wiring board containing a first of circuit configuration type and a second circuit configuration type, the printed wiring board comprising:a first insulating base member having a first conductive layer formed on one side thereof, the first conductive layer formed into a predetermined circuit pattern including a first circuit portion of the first circuit configuration type and a second circuit portion of the second circuit configuration type,an auxiliary insulating member partially formed on the first conductive layer of the first insulating base member at a position corresponding to the second circuit portion,a second insulating base member formed on the first insulating base member, the second insulating base member having a second conductive layer on one side thereof, the second conductive layer being formed into a predetermined circuit pattern, the auxiliary insulating member being interposed between the second insulating base member and the first insulating base member, anda conductive member that electrically connects the first conductive layer and the second conductive layer, the conductive member passing through an insulating layer that is formed by the second insulating base member and the auxiliary insulating member between the first conductive layer and the second conductive layer,wherein the insulating layer comprises:a thin insulating portion of a thickness determined by a thickness of the second insulating base member, the thin insulating portion corresponding positionally to the first circuit portion, anda thick insulating portion, thicker than the thin insulating portion, having a thickness determined by a thickness of the second insulating base member and a thickness of the auxiliary insulating member, the thick insulating portion corresponding positionally to the second circuit portion.