Patent ID: 6711815
Filing Date: 2004-03-30
Classification: H01L,H05K,Y10T

Abstract:
A fabricating method of semiconductor devices in which on a functional surface of a semiconductor chip of center-pad structure a printed wired board is adhered and center-pads of the semiconductor chip and bonding pads of the printed wired board are connected through bonding wires, comprising the steps of:implementing etching to metallic foil of a laminate plate that is formed by laminating the metallic foil and insulating film to form an extracting line for plating in an area corresponding to center-pads of the semiconductor chip being adhered, terminal portions for external input/output and bonding pads in an area corresponding to the other portion than the above area of the semiconductor chip, and circuit pattern electrically connecting these while straddling both the areas, respectively, to obtain the printed wired board; carrying out electroplating to the terminals for external input/output and the bonding pads while supplying electricity from the extracting line for plating of the printed wired board; removing an area of the printed wired board corresponding to the center-pads of the semiconductor chip together with the extracting line for plating to form a window; adhering the insulating film side of the printed wired board to the semiconductor chip so that the center-pads are exposed from the window; connecting the bonding pads of the printed wired board and the center-pads of the semiconductor chip with bonding wires; and, forming the terminals for external input/output at the terminal portions for external input/output of the printed wired board.