| 摘要 |
A method of manufacturing a printed circuit board comprising the steps of: (a) disposing a first release film (2a) on the surface of a substrate (1) and a second release film (2b) on the back of the substrate (1), (b) forming a through-hole (3) in the first release film (2a), the second release film (2b), and the substrate (1), (c) filling conductive paste (4) into a through-hole (3), (d) removing the first release film (2a) and the second release film (2b) from the substrate (1) with the through-hole (3) filled with the conductive paste (4), (e) placing a first metallic member (5a) on the surface of the substrate (1) with the release films removed and placing a second metallic member (5b) on the back of the substrate (1); (f) compressing under heat the substrate (1) with the first metallic member (5a) and the second metallic member (5b) disposed thereon, and (g) forming a desired circuit pattern (6a,6b) on the first metallic member (5a) and the second metallic member (5b). The thickness of the first release film (2a) is greater than the thickness of the second release film (2b), and when the first release film (2a) is peeled, a first projected paste portion (4a) is formed projecting from the surface of the substrate (1) having the through-hole (3), and a second projected paste portion (4b) is formed projecting from the back of the substrate (1) having the through-hole (3). Each of the metallic members (5a,5b) is connected to the projected paste portions (4a,4b). <IMAGE> |
