Patent ID: 8206997

Claim:
A method of manufacturing a thin film probe sheet to be used for the manufacture of a semiconductor integrated circuit device, comprising the steps of: (a) providing a first wafer having crystallinity; (b) anisotropically etching a first main surface of the first wafer to form a plurality of first hole portions having a shape of a quadrangular pyramid or a trapezoidal pyramid; (c) selectively forming a first masking film over the first main surface of the first wafer to fill the first hole portions therewith; (d) forming, with the first masking film as a mask, a first thin film over a first region of the first main surface of the first wafer where the first masking film has not been formed; (e) removing the first masking film such that a plurality of openings corresponding to the first hole portions are formed in the first thin film, and selectively forming a second masking film over the first thin film; (f) with the second masking film as a mask, forming a plurality of first metal film portions over inner surfaces of the first hole portions and the openings; (g) forming a plurality of second metal film portions over the first metal film portions with the second masking film as a mask so as to fill the openings with the second metal film portions, the second metal film portions protruding from the openings; (h) removing the second masking film; (i) forming a first insulating film over the first main surface so as to cover the first thin film and the second metal film portions with the first insulating film, (j) forming, in the first insulating film, a plurality of first through-holes reaching respective ones of the second metal film portions; (k) forming, over the first insulating film, a plurality of first interconnects coupled to respective ones of the second metal film portions via the first through-holes; and (l) after the step (k), successively removing the first wafer and the first thin film such that the first and second metal film portions form a plurality of contact terminals, wherein the first thin film has polyimide as a principal component thereof, wherein the first insulating film has polyimide as a principal component thereof, wherein in the step (e), after removing the first masking film and prior to forming the second masking film, a second thin film is formed over the inner surfaces of the openings and the first hole portions, the second thin film having an etch selectivity relative to the first thin film, the first metal film portions and the first insulating film, and wherein in the step (l), after removing the first thin film, the second thin film is removed.