Patent ID: 6815348
Filing Date: 2004-11-09
Classification: H01L,Y10S

Abstract:
A method of plugging through-holes in a silicon substrate comprising the following steps of:providing the silicon substrate having first and second surfaces with through-holes penetrating from the first surface to the second surface; forming an insulating film on the first and second surfaces of the silicon substrate including inner wall faces of the through-holes; adhering a conductor plane to the second surface of the silicon substrate by means of an adhesive; etching the adhesive via the through-holes from the first surface of the silicon substrate to drill the adhesive and form corresponding holes therein so that the conductor plane is exposed through the holes in the adhesive and the corresponding through-holes in the silicon substrate; filling the through-holes with a metal by plating the metal using the conductor plane as an electrode from the first surface of the silicon substrate; peeling off the conductor plane and smoothing the first and second surfaces of the silicon substrate including the filled metal; and conducting a high-pressure annealing on the silicon substrate.