Patent ID: 6746938
Filing Date: 2004-06-08
Classification: H01L

Abstract:
A method of manufacturing a semiconductor device, the method comprising the steps of:forming at least an active device on a principal surface of a semiconductor substrate; etching the semiconductor substrate with the use of a photo sensitive polyimide material as an etching mask from the surface of the substrate on which the active device is formed to thereby form a viahole adjacent to an active region where the active device is formed; forming a plated wiring, the plated wiring including an inner wall of the viahole and extending to an electrode of the active device on the surface of the substrate; reversing the substrate and temporarily fixing the reversed substrate on a base wafer with an adhesive; grinding or polishing the back side of the semiconductor substrate temporarily fixed on the base wafer to thereby thin the substrate; subjecting the thinned substrate to wet etching to thereby make the plated wiring at the inside bottom of the viahole open; and separating the semiconductor substrate carrying the viahole from the base wafer.