Patent ID: 7565738
Filing Date: 2009-07-28
Classification: H01L,H05K,Y10T

Abstract:
1. A method for manufacturing a board for mounting a circuit element, the method comprising: forming a first connection part protruded in a thickness direction on a surface of a first conductive film; laminating a second conductive film on an insulating layer containing fillers which is formed directly on the surface of the first conductive film to bury the first connection part; partially removing the second conductive film corresponding to a region where the first connection part is formed; forming a through-hole by removing the insulating layer in a region thinly formed by burying the first connection part, and exposing an upper surface of the first connection part to the lower side of the through-hole; connecting the first conductive film and the second conductive film by forming a second connection part in the through-hole; and forming a first wiring layer and a second wiring layer by patterning the first conductive film and the second conductive film, wherein the through-hole is formed by removing only the second resin film positioned above the first connection part.