Patent ID: 9070560
Filing Date: 2015-06-30
Classification: B23K,G01R,H01L

Abstract:
1. A semiconductor chip, comprising: a substrate including a main surface, a back surface opposite to the main surface, a side surface extending between the main surface and the back surface; an interlayer insulating film formed over the main surface of the substrate; a pad formed in a layer over the interlayer insulating film; a protective film formed over the interlayer insulating film such that the protective film exposes the pad; and a modified region formed in the substrate, wherein the interlayer insulating film has a wiring layer and a low-dielectric constant film; wherein the substrate is comprised of silicon, wherein a dielectric constant of the low-dielectric constant film is lower than that of the substrate, wherein the modified region is spaced apart from the side surface of the substrate, wherein the modified region is closer than the pad to the side surface of the substrate, and wherein no metal pattern is disposed in a part of the layer where the pad is formed that is above and between the modified region and the side surface of the substrate.