Patent ID: 6352877
Filing Date: 2002-03-05
Classification: H01L

Abstract:
A method for fabricating a metal layer in a semiconductor device, the semiconductor device having a transistor and a capacitor electrode formed on a region of a semiconductor substrate, the method comprising the steps of:(1) forming a planar protection film on an entire surface of the semiconductor substrate inclusive of the transistor and the capacitor electrode; (2) forming an absorber layer over the planar protection film inclusive of a region over the transistor; (3) forming an insulating film on an entire surface, with a width of projection in a relievo form in a region over the absorber layer; (4) forming a via hole through the planar protection film and the insulating film, to expose the capacitor electrode; (5) forming a tungsten plug and a planar stuffed layer in the via hole; (6) forming a mirror metal layer on the insulating film on both sides of the projection of a relievo form of the insulating film, inclusive of the planar stuffed layer; and, (7) forming an insulating film spacer on the projection of a relievo form of the insulating film and the mirror metal layer in the vicinity of the projection.