Patent ID: 8351002
Filing Date: 2013-01-08
Classification: H05K,Y10T

Abstract:
1. A printed circuit board for mounting electric elements thereon, comprising: a ground portion formed on the printed circuit board connected to an outer ground; first and second conductive ground layers stacked so as to interpose an insulation layer therebetween, the first conductive ground layer including first, second, and third conductive ground portions, the first and second conductive ground portions having island shapes, respectively, and the third conductive ground portion being adjacent to the first and second conductive ground portions; first and second through holes formed in the second and third conductive ground portions, respectively; and a connecting element connecting the first conductive ground portion and at least one of the second and third conductive ground portions; wherein the first conductive ground portion is coupled to the outer ground and the second conductive ground layer is grounded via the first conductive ground portion and at least one of the second and third conductive ground portions of the first conductive ground layer.