Abstract:
PROBLEM TO BE SOLVED: To provide a metal coated laminate enabling an improvement in adhesion of a metal layer and a thermoplastic polymer film having flexibility, and in dimensional stability at the time of conductor etching, and a manufacturing method of the same. SOLUTION: This method for production of the metal coated laminate comprising the film and the metal layer consisting of a foundation layer and an upper layer includes (a) a process of forming the foundation layer by plating on at least a part of the surface of the film, (b) a process of forming the upper layer by plating on a first laminate formed by the process (a), and (c) a process of carrying out a heat treatment to a second laminate formed by the process (b). The film is a thermoplastic polymetric film having a flexibility, the foundation layer is a nickel alloy, and the upper layer is copper. The plated film formed by the processes (a) and (b) has a compression stress before the process (c), and the metal coated laminate contracts in the direction of the film plane by the process (c). COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a printed circuit substrate and a method for forming a gold thin film by surface treatment of a printed circuit substrate.SOLUTION: The present invention provides a method for forming a gold thin film, comprising: a step for forming a nickel plating layer by electroless plating of nickel (Ni) on a surface of an object; a step for forming a palladium-copper mixed plating layer by electroless plating of a palladium-copper (Pd-Cu) mixture on the nickel plating layer; and a step for forming a first gold thin layer by immersing the palladium-copper mixed plating layer in a gold (Au) galvanic electrolyte solution to substitute gold for the copper (Cu) component of the palladium-copper mixture by a substitution reaction.
Abstract:
PROBLEM TO BE SOLVED: To provide a flexible film (flexible printed circuit) superior in safeness and reliability in which a hole is easily formed, and to provide a display device which has the film. SOLUTION: The flexible film relating to one embodiment includes: an insulating film including a hole, an inner circumference surface surrounding the hole, a first surface, and a second surface opposite to the first surface; and a metal layer covering the inner circumference surface and at least one of the first surface and the second surface and including a first layer and a second layer. The metal layer has a first region, located on the inner circumference surface and a second region located on the first surface or the second surface, with the second region having a thickness which is larger than that of the first region. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a core layer and a multilayer substrate which are effective for reduction of a raw cost, and their manufacturing method. SOLUTION: A core layer which includes a nickel layer as a seed layer and can form a fine inner circuit by a semi-additive method by improving combination force between a core insulating layer or an insulating layer such as prepreg and a conductive layer such as a copper layer, can reduce the number of layers of a substrate to be laminated since a fine interconnection can be formed directly in the core layer, can thin the substrate since the thickness of a formed electroless nickel plating layer can be reduced, thus improving productivity, and can reduce a raw cost, a multilayer substrate and their manufacturing method are provided. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PURPOSE:To subject only the inner wall of a hole in a copper-lined laminated board to electroless plating by leaving catalyst nuclei only on the inner wall and carrying out plating under specified conditions using a specified electroless Ni plating bath. CONSTITUTION:Catalyst nuclei are stuck to the whole surface of a copper-lined laminated board including the inner wall of a hole pierced in the board, and the catalyst nuclei on the surface of the copper foil of the board are removed by planing to leave the catalyst nuclei only on the inner wall of the hole. The board is then immersed in an electroless Ni plating bath of 2.1-2.6pH at 65- 75 deg.C. The plating bath contains 3-9g/l (expressed in terms of Ni) Ni salt, 15- 30g/l sodium citrate and 30-50g/l sodium hypophosphite. Only the inner wall of the hole in the copper lined laminated board is subjected to electroless Ni plating.
Abstract:
Some novel features pertain to a substrate that includes a first dielectric layer, a first interconnect, a first cavity, and a first electroless metal layer. The first dielectric layer includes a first surface and a second surface. The first interconnect is on the first surface of the substrate layer. The first cavity traverses the first surface of the first dielectric layer. The first electroless metal layer is formed at least partially in the first cavity. The first electroless metal layer defines a second interconnect embedded in the first dielectric layer. In some implementations, the substrate further includes a core layer. The core layer includes a first surface and a second surface. The first surface of the core layer is coupled to the second surface of the first dielectric layer. In some implementations, the substrate further includes a second dielectric layer.