Patent ID: 6617527
Filing Date: 2003-09-09
Classification: H01L,H05K

Abstract:
A printed circuit board comprising:an insulative substrate; a first conductive layer having a predetermined width and length and formed on said insulative substrate, the first conductive layer extending in a first direction; a first insulative layer formed over said first conductive layer; a circuit pattern having a narrower width than that of said first conductive layer being provided in parallel with said first direction of said first conductive layer, wherein said circuit pattern is formed on said first insulative layer; and a second insulative layer formed over said circuit pattern; a pair of grooves formed alongside the entire length of both sides of said circuit pattern and in said first and second insulative layers so as to expose said first conductive layer, wherein said pair of grooves extend in a second direction parallel to said first direction so as to sandwich said circuit pattern therebetween; and a second conductive layer formed on said second insulative layer continuously from an inner wall of one of said pair of grooves to an inner wall of another groove of said pair of grooves so as to connect to said first conductive layer, wherein said second conductive layer connected to said first conductive layer through said first and second insulative layers forms a structure surrounding said circuit pattern.