Abstract:
PROBLEM TO BE SOLVED: To provide a metallic foil-polyimide laminated plate of whole polyimides which sufficiently utilizes a characteristic of a heat-resistant polyimide film and has good smoothness of a surface of an adhesive layer without uneven thickness. SOLUTION: In the metallic foil-polyimide laminated flexible plate made by laminating the metallic foil on one surface of the heat-resistant polyimde film via a heat resistant adhesive layer, the heat resistant adhesive layer is a polyimide adhesive layer made by heating and imidizing polyamic acid varnish containing 5 to 200 ppm of a leveling agent based on the solid component of the polyamic acid, and the polyimide adhesive layer of the obtained laminated plate shows a glass transition temperature of not lower than 400°C. The manufacturing method of the metallic foil-polyimide laminated flexible plate comprises applying a leveling agent-containing polyamic acid solution on the metallic foil and drying it; laminating the heat-resistant polyimide film on the polyamic acid solution with a heating roll; and heating and imidizing it in the temperature range of 200 to 400°C. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To enhance the reliability of an interlayer connection in a circuit formation substrate. SOLUTION: A method for manufacturing the circuit formation substrate with a material for manufacturing the circuit formation substrate comprises the steps of laminating a lamination by overlapping a substrate material 2 with an interlayer connecting means arranged, a substrate material 2 with a metal foil or the interlayer connecting means arranged, a core circuit formation substrate 10, and a metal foil; and integrally heat pressing the lamination. A pressure absorbing means 1a is provided to the metal foil to avoid a damage to the interlayer connection part at the time of a compression such as the heat pressing or the like. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an electronic component which can be made thinner, smaller, and higher in package density and improve the pattern precision of an inductor, and its manufacturing method. SOLUTION: A core substrate 1 is constituted by forming in a plate shape a compound material obtained by mixing a powdery functional material with a resin material or resin. A patterned thin-film conductor 2 is formed by thin-film technology on at least one of the top and reverse surfaces of the core substrate 1. Crossless layers 3a to 3d are superposed on at least one surface of the core substrate 1 where the thin-film conductor 2 is formed. This crossless layers are each formed by coating one surface of a metal foil with a compound material obtained by mixing a powdery functional material with a resin material or resin. Conductor layers 4a to 4d are formed on the crossless layers 3a to 3d by patterning metal foils. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a production method of a material making the skeletal material, which is contained in an insulating resin layer, as thin as possible at the time of manufacture of a copper clad laminated sheet and capable of certainly preventing the direct contact of a laminated copper foil subjected to roughening treatment with the skeletal material. SOLUTION: In the manufacturing method for a copper foil wherein a semicured insulating resin layer containing the skeletal material is provided to one surface of the copper foil, an uncured or semicured first thermosetting resin layer 3 is provided on one surface of the copper foil 2 and a nonwoven fabric or woven fabric 5 becoming the skeletal material is press-bonded to the first thermosetting resin layer 3. A second thermosetting resin layer 7 is formed to the surface of the press-bonded nonwoven fabric or woven fabric 5 and dried so as to become a semicured state to manufacture the copper foil 1 with the insulating layer wherein the semicured insulating layer containing the nonwoven fabric or woven fabric 5 is formed on one surface of the copper foil 2. COPYRIGHT: (C)2004,JPO