Abstract:
수지제의 레지스트 패턴을 마련하는 일 없이, 밀착성이 양호한 배선층이 형성된 배선 기판의 제조 방법을 제공한다. 배선 기판(1)의 제조 방법은, 절연성의 기재(2)의 표면에, 도전성을 갖는 하지층(4)이 마련되고, 하지층(4)의 표면(4a)에, 소정 패턴의, 금속을 함유하는 시드층(5)이 마련된 시드층을 갖는 기재(9)를 준비하고, 고체 전해질막(13)을 시드층(5) 및 하지층(4)에 압박하고, 양극(11)과 하지층(4) 사이에 전압을 인가하여, 고체 전해질막(13)에 함유된 금속 이온을 환원함으로써 시드층(5)의 표면(5a)에 금속층(6)을 형성하고, 하지층(4) 중 시드층(5) 및 금속층(6)이 형성되어 있지 않은 노출 영역(R)을 제거함으로써, 기재(2)의 표면에, 하지층(4), 시드층(5) 및 금속층(6)에 의해 구성되는 배선층(3)을 형성하고, 시드층(5)의 표면(5a)에 금속층(6)을 형성할 때에 있어서, 하지층(4)의 표면의 적어도 시드층(5)이 형성되어 있지 않은 영역은, 산화물을 포함하고 있다.
Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing a printed circuit board for a semiconductor package capable of simplifying steps and improving mounting reliability, by eliminating all of a masking process or minimizing it on plating each pad in a surface processing operation of the printed circuit board for the semiconductor package. SOLUTION: A printed circuit board for packaging is provided including a certain circuit pattern formed thereon including pads for wire bonding and for SMD mounting. A solder resist layer is formed in a part except for the pads for wire bonding and for SMD mounting of the printed circuit board. Nonelectrolytic nickel and gold plating layers are formed on the pads for wire bonding and for SMD mounting by means of a nonelectrolytic nickel plating and a nonelectrolytic gold plating. An electrolytic gold plating layer is formed by means of the electrolytic gold plating, on a part of an ENIG layer with a plating lead wire connected thereto in the ENIG layers of the pad for the SMD mounting, and on the ENIG layer of the pad for wire bonding. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of manufacturing a wiring board by which a solder layer can be easily formed on only the surface of a flip chip pad, in a board wherein the flip chip pad and a bonding pad are provided together. SOLUTION: A flip chip pad 12 and a bonding pad 14 of which surfaces are made of different metals are provided together, a solder powder 18 is adhered to an adhesive layer 16 formed on only the flip chip pad 12, and then reflow is conducted to melt the solder powder 18 adhering to only the flip chip pad 12. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method of a circuit board having a different conductive structure for performing different electrical connection depending on electrode pads. SOLUTION: In the circuit board 30, first and second electrode pads 301, 302 are provided on a first surface, and a third electrode pad 303 is provided on a second surface. An insulating protective layer is formed on both the surfaces; a plurality of openings for exposing the first, second, and third electrode pads 301, 302, 302 are formed; a conductive layer 31 is formed on the surface of the first insulation protective layer; a resist layer is formed on both the surfaces; a plurality of openings for exposing the conductive layer 31 on the surface of the first and second electrode pads 301, 302 are formed; a first conductive structure 33 is formed on the conductive layer 31 on the surface of the first and second exposed electrode pads 301, 302 by electrical plating; the resist layer and the conductive layer 31 are removed for covering the resist layer; and a second conductive structure 34 is formed on the surface of the conductive layer 31 on the surface of the second electrode pad 302, and on the surface of the third electrode pad 303 by stencil printing. COPYRIGHT: (C)2007,JPO&INPIT